Purpose. Analysis of the theoretical foundations, design schemes and methods for calculating the technical and technological support of drilling cycle operations using dynamic shock impulses in order to intensify destructive processes at the bottom of a well under construction. Research methodology. Laboratory studies of the features of the functioning of devices for generating shock pulses were carried out using modern methods of experimental research, methods for processing research results in the EXCEL, MATHCAD environment, instrumentation (pressure gauges, flow meters) and materials. The flow of well circulation and destructive technological actions was modeled on pilot wells of the training drilling site of the Dnipro University of Technology using a ZIF-650M drilling rig and a UKB-4P drilling rig, also the corresponding main drilling tool. Research results. Theoretical and practical foundations of the process of operation of shock pulse generators - drilling hydraulic hammers are formulated. A detailed analysis of specific works and studies shows the prospects for the development of hydropercussion drilling methods that are effective both from the standpoint of fracture mechanics and the energy intensity of this process. This, in turn, will make it possible to determine the most rational parameters for the destruction of rock at the bottom of the well, that is, maximum productivity with minimal energy consumption. The basic principles of the mechanism of functioning of hydraulic impact devices are studied with the derivation of the most important analytical dependencies characterizing their workflow. Originality. The high efficiency of the percussion-rotary drilling method lies in the significant value of the rate of application of the breaking load, which, when using hydraulic percussion machines, is subject to wide variation. Practical implications. The theoretical foundations are considered and radically new design schemes for the implementation of devices for generating shock pulses (hydraulic hammers) are created, the use of which will ensure the constancy of the process of deepening the bottom hole with a high degree of productivity and efficiency, in addition, it is possible to organically use these devices in technological schemes for eliminating well complications.
{"title":"Study the possibilities of application impact pulses in construction of wells","authors":"A. Ihnatov, I. Askerov","doi":"10.33271/crpnmu/69.206","DOIUrl":"https://doi.org/10.33271/crpnmu/69.206","url":null,"abstract":"Purpose. Analysis of the theoretical foundations, design schemes and methods for calculating the technical and technological support of drilling cycle operations using dynamic shock impulses in order to intensify destructive processes at the bottom of a well under construction. Research methodology. Laboratory studies of the features of the functioning of devices for generating shock pulses were carried out using modern methods of experimental research, methods for processing research results in the EXCEL, MATHCAD environment, instrumentation (pressure gauges, flow meters) and materials. The flow of well circulation and destructive technological actions was modeled on pilot wells of the training drilling site of the Dnipro University of Technology using a ZIF-650M drilling rig and a UKB-4P drilling rig, also the corresponding main drilling tool. Research results. Theoretical and practical foundations of the process of operation of shock pulse generators - drilling hydraulic hammers are formulated. A detailed analysis of specific works and studies shows the prospects for the development of hydropercussion drilling methods that are effective both from the standpoint of fracture mechanics and the energy intensity of this process. This, in turn, will make it possible to determine the most rational parameters for the destruction of rock at the bottom of the well, that is, maximum productivity with minimal energy consumption. The basic principles of the mechanism of functioning of hydraulic impact devices are studied with the derivation of the most important analytical dependencies characterizing their workflow. Originality. The high efficiency of the percussion-rotary drilling method lies in the significant value of the rate of application of the breaking load, which, when using hydraulic percussion machines, is subject to wide variation. Practical implications. The theoretical foundations are considered and radically new design schemes for the implementation of devices for generating shock pulses (hydraulic hammers) are created, the use of which will ensure the constancy of the process of deepening the bottom hole with a high degree of productivity and efficiency, in addition, it is possible to organically use these devices in technological schemes for eliminating well complications.","PeriodicalId":10466,"journal":{"name":"Collection of Research Papers of the National Mining University","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78308242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. Bondarenko, I. Kovalevska, D. Malashkevych, V. Sushkova
Purpose. Analysis of problems and prospects for the development of methods of hydrogen extraction, review of literature and study of methods of its transportation and use of hydrogen fuel in Ukraine and the world. Methodology. To achieve the goal, the work uses an empirical method of scientific research, taking into account theoretical provisions. Findigs. Expanded and systematized methods of obtaining hydrogen using various technologies (such as extraction of green hydrogen from excess electricity from renewable sources, gasification of coking coal at high temperature, electrolysis), which allowed to create a laboratory installation, the starting material of which is distillate from mine water, for obtaining hydrogen by electrolysis. Originality. consists in the analysis and systematization of energy and environmental aspects of the use of hydrogen fuel based on general information about hydrogen energy in Ukraine and the world. The regularities of the impact of various methods of obtaining hydrogen on the environment have been established. Although hydrogen is considered ecologically clean, in the future it is necessary to consider such a problem as the strengthening of the global greenhouse effect as a result of anthropogenic activity during the mass production and use of hydrogen and the impact of this activity on the protection of the Earth's ozone layer. Practical implication. The expediency of the transition to hydrogen energy with the production of green hydrogen by electrolysis has been confirmed. Ukraine has a high potential in the field of production of ecologically clean green hydrogen using innovative technologies. The advantage of molecular hydrogen as a synthetic fuel is its high energy density, where hydrogen exceeds natural gas by 2.6 times, oil by 3.3 times, and cellulose by 8.3 times. The topical issue of the use of wind, solar and other types of energy has led to an increase in the share of alternative sources since 2007. By 2020 According to the Ministry of Energy and international partners, the potential of production and use of "green hydrogen" is a universal tool for decarbonization. The European Commission has developed a holistic strategy to support hydrogen, placing it at the heart of the EU Green Deal. Hydrogen is produced using electricity produced from renewable sources, which currently accounts for about 1% of its total production.
{"title":"Current status and prospects of the development of hydrogen energy","authors":"V. Bondarenko, I. Kovalevska, D. Malashkevych, V. Sushkova","doi":"10.33271/crpnmu/69.007","DOIUrl":"https://doi.org/10.33271/crpnmu/69.007","url":null,"abstract":"Purpose. Analysis of problems and prospects for the development of methods of hydrogen extraction, review of literature and study of methods of its transportation and use of hydrogen fuel in Ukraine and the world. Methodology. To achieve the goal, the work uses an empirical method of scientific research, taking into account theoretical provisions. Findigs. Expanded and systematized methods of obtaining hydrogen using various technologies (such as extraction of green hydrogen from excess electricity from renewable sources, gasification of coking coal at high temperature, electrolysis), which allowed to create a laboratory installation, the starting material of which is distillate from mine water, for obtaining hydrogen by electrolysis. Originality. consists in the analysis and systematization of energy and environmental aspects of the use of hydrogen fuel based on general information about hydrogen energy in Ukraine and the world. The regularities of the impact of various methods of obtaining hydrogen on the environment have been established. Although hydrogen is considered ecologically clean, in the future it is necessary to consider such a problem as the strengthening of the global greenhouse effect as a result of anthropogenic activity during the mass production and use of hydrogen and the impact of this activity on the protection of the Earth's ozone layer. Practical implication. The expediency of the transition to hydrogen energy with the production of green hydrogen by electrolysis has been confirmed. Ukraine has a high potential in the field of production of ecologically clean green hydrogen using innovative technologies. The advantage of molecular hydrogen as a synthetic fuel is its high energy density, where hydrogen exceeds natural gas by 2.6 times, oil by 3.3 times, and cellulose by 8.3 times. The topical issue of the use of wind, solar and other types of energy has led to an increase in the share of alternative sources since 2007. By 2020 According to the Ministry of Energy and international partners, the potential of production and use of \"green hydrogen\" is a universal tool for decarbonization. The European Commission has developed a holistic strategy to support hydrogen, placing it at the heart of the EU Green Deal. Hydrogen is produced using electricity produced from renewable sources, which currently accounts for about 1% of its total production.","PeriodicalId":10466,"journal":{"name":"Collection of Research Papers of the National Mining University","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90338058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. Falshtynskyi, P. Saik, R. Dychkovskyi, V. Lozynskyi, M. Demydov
Purpose. An innovative approach formulation to the rational development of the potential of coal mines to expand the economic activity of mining enterprises based on the implementation of underground heat generators during coal gasification. Methods. Based on the conducted analytical and laboratory research, to study the possibility of introducing underground heat generators and cogeneration systems during gasification of coal at the site of its occurrence. The basis for conducting analytical studies is the experience of implementing the specified modules and cogeneration plants. The basis for laboratory research is a laboratory setup that allows modeling the behavior of thermochemical and geomechanical processes in the resulting gas generator, depending on the mining-geological conditions of the coal seam occurrence, methods and ways of supplying injected blast mixtures to the fire face mirror. Findings. Current issues of implementing the cumulative energy systemsbased on mining enterprises are highlighted. It has been determined that a possible basis for expanding the range of economic activity at a coal-mining enterprise is the implementation of underground gasification technology. The main products of the latter are producer gas, thermal energy and chemical raw materials. The parameters of changing the temperature field in the immediate bottom of the underground gas generator and the producer gas temperature at the outlet from the gas production borehole have been studied. On the basis of their changes, the technological schemes of the underground heat generator are proposed. This makes it possible to use technogenic thermal energy both in the process of coal gasification and at the stage of attenuation of an underground gas generator, as well as a scheme of a cogeneration system with heat accumulation from products of borehole underground coal gasification (BUCG). Originality. An innovative approach has been developed to the rational technogenic thermal energy development during coal gasification at the site of its occurrence. Practical implications. The implementation of cumulative energy systems based on underground heat generators during coal gasification at the site of its occurrence and the subsequent use of thermal technogenic environment allow creating compact energy modules that can satisfy the energy needs of a mining enterprise.
{"title":"Aspects for implementing the cumulative energy systems during underground coal gasification","authors":"V. Falshtynskyi, P. Saik, R. Dychkovskyi, V. Lozynskyi, M. Demydov","doi":"10.33271/crpnmu/69.094","DOIUrl":"https://doi.org/10.33271/crpnmu/69.094","url":null,"abstract":"Purpose. An innovative approach formulation to the rational development of the potential of coal mines to expand the economic activity of mining enterprises based on the implementation of underground heat generators during coal gasification. Methods. Based on the conducted analytical and laboratory research, to study the possibility of introducing underground heat generators and cogeneration systems during gasification of coal at the site of its occurrence. The basis for conducting analytical studies is the experience of implementing the specified modules and cogeneration plants. The basis for laboratory research is a laboratory setup that allows modeling the behavior of thermochemical and geomechanical processes in the resulting gas generator, depending on the mining-geological conditions of the coal seam occurrence, methods and ways of supplying injected blast mixtures to the fire face mirror. Findings. Current issues of implementing the cumulative energy systemsbased on mining enterprises are highlighted. It has been determined that a possible basis for expanding the range of economic activity at a coal-mining enterprise is the implementation of underground gasification technology. The main products of the latter are producer gas, thermal energy and chemical raw materials. The parameters of changing the temperature field in the immediate bottom of the underground gas generator and the producer gas temperature at the outlet from the gas production borehole have been studied. On the basis of their changes, the technological schemes of the underground heat generator are proposed. This makes it possible to use technogenic thermal energy both in the process of coal gasification and at the stage of attenuation of an underground gas generator, as well as a scheme of a cogeneration system with heat accumulation from products of borehole underground coal gasification (BUCG). Originality. An innovative approach has been developed to the rational technogenic thermal energy development during coal gasification at the site of its occurrence. Practical implications. The implementation of cumulative energy systems based on underground heat generators during coal gasification at the site of its occurrence and the subsequent use of thermal technogenic environment allow creating compact energy modules that can satisfy the energy needs of a mining enterprise.","PeriodicalId":10466,"journal":{"name":"Collection of Research Papers of the National Mining University","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91143104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. Chernyakov, D. Zhmura, H. Pcholkin, M. Chebanov
Purpose. To introduce systematic monitoring of the actual angles of rotation of the dragline boom during field development and to determine the actual parameters of the cycle during excavation and movement of rock mass in order to study the parameters of the implemented mining scheme, and confirm the feasibility of its application. Research methodology. The study of the actual angle of rotation was carried out using a hardware and software calculation method based on data from devices for recording the spatial position of the boom and on the basis of a GPS signal during operation. Actual performance is based on a survey report for the period. Research results. The boom position was measured while working in the open pits of the Andriivske field, and the frequency of manifestation of various angles of rotation was determined. Compared with the planned parameters of the mining scheme. The actual performance for the period has been determined. As a result of the research, the confirmed target indicators of the implemented mining scheme with the EШ10/70 dragline from one position, with re-movement coeficient and contouring of the clay layer, and the angle of rotation up to 220о. Scientific novelty. The complex of studies of the first introduced mining scheme makes it possible to assess the fulfillment of the conditions and the achievement of results to reduce the preparation time for the seam, reduce the overshoot coefficient at boom angles, which were considered ineffective when moving rocks to dumps with a non-transport technology. The positive conclusions of the research make it possible to recommend the use of such a scheme in the development of flat deposits of nonmetallic minerals. Practical value. The technique is stated which can be applied when observing the operation of draglines and other single-bucket excavators in order to determine the parameters of the work cycle and further optimize productivity.The proposed method allows to perform the analysis of the working scheme of the excavator, which leads to the maximum productivity of the mining transport equipment during direct work.
{"title":"Technique for determining the actual parameters of the swing angle of the dragline dragline ESh 10/70 under the conditions of the new scheme mining of pits of refractory clay PJSC \"Vesсo\"","authors":"V. Chernyakov, D. Zhmura, H. Pcholkin, M. Chebanov","doi":"10.33271/crpnmu/69.105","DOIUrl":"https://doi.org/10.33271/crpnmu/69.105","url":null,"abstract":"Purpose. To introduce systematic monitoring of the actual angles of rotation of the dragline boom during field development and to determine the actual parameters of the cycle during excavation and movement of rock mass in order to study the parameters of the implemented mining scheme, and confirm the feasibility of its application. Research methodology. The study of the actual angle of rotation was carried out using a hardware and software calculation method based on data from devices for recording the spatial position of the boom and on the basis of a GPS signal during operation. Actual performance is based on a survey report for the period. Research results. The boom position was measured while working in the open pits of the Andriivske field, and the frequency of manifestation of various angles of rotation was determined. Compared with the planned parameters of the mining scheme. The actual performance for the period has been determined. As a result of the research, the confirmed target indicators of the implemented mining scheme with the EШ10/70 dragline from one position, with re-movement coeficient and contouring of the clay layer, and the angle of rotation up to 220о. Scientific novelty. The complex of studies of the first introduced mining scheme makes it possible to assess the fulfillment of the conditions and the achievement of results to reduce the preparation time for the seam, reduce the overshoot coefficient at boom angles, which were considered ineffective when moving rocks to dumps with a non-transport technology. The positive conclusions of the research make it possible to recommend the use of such a scheme in the development of flat deposits of nonmetallic minerals. Practical value. The technique is stated which can be applied when observing the operation of draglines and other single-bucket excavators in order to determine the parameters of the work cycle and further optimize productivity.The proposed method allows to perform the analysis of the working scheme of the excavator, which leads to the maximum productivity of the mining transport equipment during direct work.","PeriodicalId":10466,"journal":{"name":"Collection of Research Papers of the National Mining University","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83256379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. Lukinov, K. Bezruchko, A. Каrhapolov, M. Hladka, V. Bohomaz
The purpose of the work is to elucidate general peculiarities and characteristic features of geological conditions for the occurrence and development of gas-condensate fields of the Dniprovsko-Donetskyi depression (DDD), on which the growth for the gas reserves is obtained with the further use of these indicators as forecast-estimated. The methods. The age of industrial horizons, a type of reservoir, a type of deposit, the presence of salt deposits, a depth of deposit roof, a deposit regime, levels of gas-bearingness, calculated thickness of reservoirs and their total thickness at the field, the initial formation pressure, initial gas reserves, volumes of excess of initial gas reserves were determined; the maximum geostatic pressure was calculated, the minimum reservoir gas pressure until its growth jump or stabilization was established; the value of the compression pressure for the reservoir of deposits was calculated and the relationship between the effective pressure in the deposit and the strength of the porous sandstone-reservoir was established; the common features and characteristics for the geological conditions of gas condensate field (GCF) with additional resources were undertaken, among which the predictive and estimated indicators were selected. Findings. The authors carried out a detailed analysis of the well-known gas and gas condensate fields of Ukraine. Gas-condensate deposits of the Mashivsko-Shebelynskyi gas-bearing area of the Dniprovsko-Donetskyi depression (DDD) are chosen as an object of the research. It has been established that the power of the gas column, the structure area, and the total power of productive horizons characterize the promising volume of the gas-bearing structure, which allows approximately give a predictive quantitative assessment of the production of additional gas reserves. Attracting additional gas volumes is due to the gas influx from newly made technogenic collectors, which were formed under the action of a geomechanical factor in the process of long-term development of the field. The formation of technogenic collectors occurred due to the compression of the main reservoir, the deformation of the rock strata, and the decomposition of the overlying rocks, the development of the crack propagation, permeability increase and gas recovery rising. The originality. It has been established that the power of the gas column, the structure area, and the total power of productive horizons characterize the promising volume of the gas-bearing structure, which allows approximately give a predictive quantitative assessment of the production of additional gas reserves. Practical implimintation. The geomechanical factor management opens up the prospect of obtaining additional industrial gas influx in the late stages of the development of gas and gas-condensate fields, by predicting the geological conditions for the formation of improved secondary filtration and capacitive properties favorable to form technogenic gas d
{"title":"Geological features of gas-condensatedeposits with additional increase of gas reserves","authors":"V. Lukinov, K. Bezruchko, A. Каrhapolov, M. Hladka, V. Bohomaz","doi":"10.33271/crpnmu/69.144","DOIUrl":"https://doi.org/10.33271/crpnmu/69.144","url":null,"abstract":"The purpose of the work is to elucidate general peculiarities and characteristic features of geological conditions for the occurrence and development of gas-condensate fields of the Dniprovsko-Donetskyi depression (DDD), on which the growth for the gas reserves is obtained with the further use of these indicators as forecast-estimated. The methods. The age of industrial horizons, a type of reservoir, a type of deposit, the presence of salt deposits, a depth of deposit roof, a deposit regime, levels of gas-bearingness, calculated thickness of reservoirs and their total thickness at the field, the initial formation pressure, initial gas reserves, volumes of excess of initial gas reserves were determined; the maximum geostatic pressure was calculated, the minimum reservoir gas pressure until its growth jump or stabilization was established; the value of the compression pressure for the reservoir of deposits was calculated and the relationship between the effective pressure in the deposit and the strength of the porous sandstone-reservoir was established; the common features and characteristics for the geological conditions of gas condensate field (GCF) with additional resources were undertaken, among which the predictive and estimated indicators were selected. Findings. The authors carried out a detailed analysis of the well-known gas and gas condensate fields of Ukraine. Gas-condensate deposits of the Mashivsko-Shebelynskyi gas-bearing area of the Dniprovsko-Donetskyi depression (DDD) are chosen as an object of the research. It has been established that the power of the gas column, the structure area, and the total power of productive horizons characterize the promising volume of the gas-bearing structure, which allows approximately give a predictive quantitative assessment of the production of additional gas reserves. Attracting additional gas volumes is due to the gas influx from newly made technogenic collectors, which were formed under the action of a geomechanical factor in the process of long-term development of the field. The formation of technogenic collectors occurred due to the compression of the main reservoir, the deformation of the rock strata, and the decomposition of the overlying rocks, the development of the crack propagation, permeability increase and gas recovery rising. The originality. It has been established that the power of the gas column, the structure area, and the total power of productive horizons characterize the promising volume of the gas-bearing structure, which allows approximately give a predictive quantitative assessment of the production of additional gas reserves. Practical implimintation. The geomechanical factor management opens up the prospect of obtaining additional industrial gas influx in the late stages of the development of gas and gas-condensate fields, by predicting the geological conditions for the formation of improved secondary filtration and capacitive properties favorable to form technogenic gas d","PeriodicalId":10466,"journal":{"name":"Collection of Research Papers of the National Mining University","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85468651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. Rudakov, I. Sadovenko, O. Inkin, N. Dereviahina
Purpose. Predictive estimation of changes in hydrodynamic conditions of “Novohrodivska 2” mine during its closure and operation of geothermal systems with evaluation of a required capacity of drainage systems capable to prevent flooding in the areas adjacent to the mine. Methods. The total mine water inflow was calculated using the analytical relations of geofiltration and empirical dependencies while considering the rate of mine water level increase during the previ-ous stages of flooding and hydrodynamic connections with mine workings of a neighboring mine named after D.S. Korotchenko and “Novohrodivska 1-3” mine as well as the volume of mined out space and existing geological and structural tectonic faults. Findings. The total water inflow to the “Novohrodivska 2” mine calculated according to different approaches varies in a range of 2000–2200 m 3 /day depending on the inflow from neighboring mines, infiltration withing the range of 30 to 50 mm/year and the inflow from the upper aquifer. This inflow should be completely pumped out by drainage systems and discharged into the hydrographic network beyond the mine catchment area in order to maintain the hydrodynamically and environmentally safe level of +185 m during mine closure and the operation of geothermal systems. Originality. The suggested new comprehensive approach to evaluate the total inflow during mine closure allows adequate consideration of hydrodynamic conditions in this area, geological and hy-drogeological structure and the impact of various natural and technogenic factors. Practical significance. The data obtained during the calculations of water inflow to the “Novohrodivska 2” mine will be used in estimation of a required capacity of drainage systems, which allow prevention of flooding and avoiding adverse physical and geological phenomena in the areas adjacent to the mine. In addition, the calculated values of water inflow are expected to be used in determining technological and economic indicators of geothermal systems.
{"title":"Justification of environmentally safe water levelin “Novohrodivska 2” minefor protectingadjacent areasfrom flooding","authors":"D. Rudakov, I. Sadovenko, O. Inkin, N. Dereviahina","doi":"10.33271/crpnmu/68.058","DOIUrl":"https://doi.org/10.33271/crpnmu/68.058","url":null,"abstract":"Purpose. Predictive estimation of changes in hydrodynamic conditions of “Novohrodivska 2” mine during its closure and operation of geothermal systems with evaluation of a required capacity of drainage systems capable to prevent flooding in the areas adjacent to the mine. Methods. The total mine water inflow was calculated using the analytical relations of geofiltration and empirical dependencies while considering the rate of mine water level increase during the previ-ous stages of flooding and hydrodynamic connections with mine workings of a neighboring mine named after D.S. Korotchenko and “Novohrodivska 1-3” mine as well as the volume of mined out space and existing geological and structural tectonic faults. Findings. The total water inflow to the “Novohrodivska 2” mine calculated according to different approaches varies in a range of 2000–2200 m 3 /day depending on the inflow from neighboring mines, infiltration withing the range of 30 to 50 mm/year and the inflow from the upper aquifer. This inflow should be completely pumped out by drainage systems and discharged into the hydrographic network beyond the mine catchment area in order to maintain the hydrodynamically and environmentally safe level of +185 m during mine closure and the operation of geothermal systems. Originality. The suggested new comprehensive approach to evaluate the total inflow during mine closure allows adequate consideration of hydrodynamic conditions in this area, geological and hy-drogeological structure and the impact of various natural and technogenic factors. Practical significance. The data obtained during the calculations of water inflow to the “Novohrodivska 2” mine will be used in estimation of a required capacity of drainage systems, which allow prevention of flooding and avoiding adverse physical and geological phenomena in the areas adjacent to the mine. In addition, the calculated values of water inflow are expected to be used in determining technological and economic indicators of geothermal systems.","PeriodicalId":10466,"journal":{"name":"Collection of Research Papers of the National Mining University","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74383629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Purpose. Substantiate the methodological principles of resource-saving stability increase of repeatedly exploited mine workings in a weakly metamorphosed coal-bearing mass by optimizing the deformation-strength characteristics of fastening structures in accordance with the geomechanical conditions of their maintenance. Methods. An integrated method is used, which includes the analysis of geomechanically processes, interaction modes of rock masses with fastening structures and methods for their optimization, experimental mining research, as well as substantiation of methodological approaches to experimental verification on the degree of conformity of the analytical development results. Findings. A new methodological principle for performing mining research has been obtained with the identification of three main peculiarities and implementation during large-scale measurements. Using specific examples, with the help of analysis and on the basis of influencing factors, the possibility of achieving the deformation-strength characteristics of fastening structures at optimal values of load and displacement has been proved. Favorable medium-intensity conditions, complex mininggeological conditions and indicators characterizing them have been determined. Originality. The schemes for optimizing the fastening system interaction with a rock mass have been substantiated and calculated, aimed at minimizing the intensity of rock pressure manifestations. Multifactorial computational experiments have been conducted to determine various areas of expedient application of specific fastening structures.
{"title":"Methodological principles and recommendations for the development of innovative technologies when maintaining reusable mine workings in the western Donbas Mines","authors":"V. Snihur","doi":"10.33271/crpnmu/68.067","DOIUrl":"https://doi.org/10.33271/crpnmu/68.067","url":null,"abstract":"Purpose. Substantiate the methodological principles of resource-saving stability increase of repeatedly exploited mine workings in a weakly metamorphosed coal-bearing mass by optimizing the deformation-strength characteristics of fastening structures in accordance with the geomechanical conditions of their maintenance. Methods. An integrated method is used, which includes the analysis of geomechanically processes, interaction modes of rock masses with fastening structures and methods for their optimization, experimental mining research, as well as substantiation of methodological approaches to experimental verification on the degree of conformity of the analytical development results. Findings. A new methodological principle for performing mining research has been obtained with the identification of three main peculiarities and implementation during large-scale measurements. Using specific examples, with the help of analysis and on the basis of influencing factors, the possibility of achieving the deformation-strength characteristics of fastening structures at optimal values of load and displacement has been proved. Favorable medium-intensity conditions, complex mininggeological conditions and indicators characterizing them have been determined. Originality. The schemes for optimizing the fastening system interaction with a rock mass have been substantiated and calculated, aimed at minimizing the intensity of rock pressure manifestations. Multifactorial computational experiments have been conducted to determine various areas of expedient application of specific fastening structures.","PeriodicalId":10466,"journal":{"name":"Collection of Research Papers of the National Mining University","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86697156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Purpose. Improvement of technological schemes of work of reloading points with substantiation of parameters of their work at working off of a deep zone of an iron ore open cast mine. Method. To achieve this purpose, the following research methods were used: analytical, graphical and mathematical modeling, the method of logical engineering solutions, comparison of options and analogies. These methods were used to substantiate the parameters of the transshipment points when using the combined conveyor-railway transport, determining the number of dump trucks from their capacity to increase the production capacity of the iron ore open cast mine. Results. Application of the developed device for reloading of rocks in railway transport, allows to reduce a transport and cargo platform by 25-30 m, thereby, to reduce volume of excavation of over-burden to 250-280 thousand m 3 , to rationally use extraction-loading and transport equipment in one line with reduction of time of loading of dump trucks and formation of a stack. Scientific novelty. For the first time the parameters of reloading points operation in the operation of combined conveyor-railway transport were substantiated and the number of dump trucks on the transport horizon was determined depending on their load capacity and production capacity of the iron ore quarry; with the productivity of the ore quarry 18 million tons / year, their number varies between 37-104 depending on the load capacity of the cars and taking into account the calendar plan of the mining enterprise. The dependence of the number of dump trucks on the horizon on their car-rying capacity and productivity of the ore quarry has been established Practical meaning. It was found that in the conditions of deep iron ore open cast mines it is most effective to use a combination of conveyor-railway transport with the construction of an installation for transshipment of rocks, which will reduce the cost of field development to 6.7-8.9 million USD.
{"title":"Substantiating the parameters of deep surfacemine reloading works during operation of combined conveyor-railway transport","authors":"O. Shustov, A. Adamchuk","doi":"10.33271/crpnmu/68.103","DOIUrl":"https://doi.org/10.33271/crpnmu/68.103","url":null,"abstract":"Purpose. Improvement of technological schemes of work of reloading points with substantiation of parameters of their work at working off of a deep zone of an iron ore open cast mine. Method. To achieve this purpose, the following research methods were used: analytical, graphical and mathematical modeling, the method of logical engineering solutions, comparison of options and analogies. These methods were used to substantiate the parameters of the transshipment points when using the combined conveyor-railway transport, determining the number of dump trucks from their capacity to increase the production capacity of the iron ore open cast mine. Results. Application of the developed device for reloading of rocks in railway transport, allows to reduce a transport and cargo platform by 25-30 m, thereby, to reduce volume of excavation of over-burden to 250-280 thousand m 3 , to rationally use extraction-loading and transport equipment in one line with reduction of time of loading of dump trucks and formation of a stack. Scientific novelty. For the first time the parameters of reloading points operation in the operation of combined conveyor-railway transport were substantiated and the number of dump trucks on the transport horizon was determined depending on their load capacity and production capacity of the iron ore quarry; with the productivity of the ore quarry 18 million tons / year, their number varies between 37-104 depending on the load capacity of the cars and taking into account the calendar plan of the mining enterprise. The dependence of the number of dump trucks on the horizon on their car-rying capacity and productivity of the ore quarry has been established Practical meaning. It was found that in the conditions of deep iron ore open cast mines it is most effective to use a combination of conveyor-railway transport with the construction of an installation for transshipment of rocks, which will reduce the cost of field development to 6.7-8.9 million USD.","PeriodicalId":10466,"journal":{"name":"Collection of Research Papers of the National Mining University","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73012868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Purpose. To characterize mafic rocks of the dike complex of the Middle Dnipro Area, which consti-tuted the raw material base for the production of stone goods over various historical epochs, according to the data of petroarchaeological studies. To find out the relationship between the petrographic features of rocks and the ways of their application. Methods. The main research method was a comparative petrographic analysis of the raw materials of stone products made from dolerites and diabases with the rocks that form natural outcrops in the Middle Dnipro Area. For this, materials from geological survey reports, literature data, as well as rock samples taken from outcrops were used. Findings. It was established that the use of dolerites and diabases in the Middle Dnipro Area began more than 30 thousand years ago. Their specialized mining was carried out in the Eneolithic-Bronze Age in the zone of distribution of rocks of the Middle Dnipro megablock of the Ukrainian Shield and the Kryvyi Rih-Kremenchuk suture zone. Ancient people used dolerites and diabases mined at the oc-currences along the rivers of Dnipro, Mokra Sura, Bazavluk, Saksahan and Inhulets, but rocks from other dikes could also be used. The main way of mafic dike rocks use in ancient times was the manu-facture of polished tools and weapons. The main petrographic features that contributed to the active use of dolerites and diabases were the relative softness of their main rock-forming minerals, massive struc-ture, fine-grained texture, and the strength due to the prismatic-granular microstructure. In the Early Iron Age, the use of these rocks had practically ceased and resumed only with the development of industrial production, probably with the beginning of active construction on the territory of the former lands of the Zaporizhzhian Cossacks at the end of the 18th century – early 19th century. Today, dolerites and diabases are mined in the Middle Dnipro Area along with granites for rubble and crushed stone. The originality. For the first time, the characteristics of the use of dolerites and diabases of the Middle Dnipro Area during previous historical epochs were given. The distribution zones of dike rocks, which served as the main raw material base for the ancient production of stone tools, were determined. Practical implementation. The results obtained can be used to write scientific and educational works on the history and archaeology of the Middle Dnipro Area.
{"title":"Dolerites and diabases of the Middle Dnipro area as raw material for ancient stone products","authors":"I. Nikitenko","doi":"10.33271/crpnmu/68.135","DOIUrl":"https://doi.org/10.33271/crpnmu/68.135","url":null,"abstract":"Purpose. To characterize mafic rocks of the dike complex of the Middle Dnipro Area, which consti-tuted the raw material base for the production of stone goods over various historical epochs, according to the data of petroarchaeological studies. To find out the relationship between the petrographic features of rocks and the ways of their application. Methods. The main research method was a comparative petrographic analysis of the raw materials of stone products made from dolerites and diabases with the rocks that form natural outcrops in the Middle Dnipro Area. For this, materials from geological survey reports, literature data, as well as rock samples taken from outcrops were used. Findings. It was established that the use of dolerites and diabases in the Middle Dnipro Area began more than 30 thousand years ago. Their specialized mining was carried out in the Eneolithic-Bronze Age in the zone of distribution of rocks of the Middle Dnipro megablock of the Ukrainian Shield and the Kryvyi Rih-Kremenchuk suture zone. Ancient people used dolerites and diabases mined at the oc-currences along the rivers of Dnipro, Mokra Sura, Bazavluk, Saksahan and Inhulets, but rocks from other dikes could also be used. The main way of mafic dike rocks use in ancient times was the manu-facture of polished tools and weapons. The main petrographic features that contributed to the active use of dolerites and diabases were the relative softness of their main rock-forming minerals, massive struc-ture, fine-grained texture, and the strength due to the prismatic-granular microstructure. In the Early Iron Age, the use of these rocks had practically ceased and resumed only with the development of industrial production, probably with the beginning of active construction on the territory of the former lands of the Zaporizhzhian Cossacks at the end of the 18th century – early 19th century. Today, dolerites and diabases are mined in the Middle Dnipro Area along with granites for rubble and crushed stone. The originality. For the first time, the characteristics of the use of dolerites and diabases of the Middle Dnipro Area during previous historical epochs were given. The distribution zones of dike rocks, which served as the main raw material base for the ancient production of stone tools, were determined. Practical implementation. The results obtained can be used to write scientific and educational works on the history and archaeology of the Middle Dnipro Area.","PeriodicalId":10466,"journal":{"name":"Collection of Research Papers of the National Mining University","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81837162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Purpose. Filling with overburden rocks of the internal mined-out space of the pit and its individual sections is the main measure that contributes to the rational use of land around the pit in the development of deposits of significant size. There is a significant reduction in the cost of funds for the exca-vation, movement and storage of overburden rocks, as well as the extraction of minerals. Storage of overburden rocks in the mined-out area of deep pits reduces the distance of their transportation, saves significant land areas from disturbance by external dumps. It is known that the exploitation of a group of deposits or pit fields of significant size should be accompanied by the allocation of a pit of the first stage, mining it to the limiting contours and subsequent advancement of mining operations with the allocation of queues and storage of overburden rocks in the empty space. The methods. The procedure and methods for moving overburden rocks from the face to internal dumps with their subsequent storage during the development of deep pits according to the proposed technological scheme are determined. The calculations were performed using modern GIS technolo-gies using the K-mine software. To calculate the volume of overburden, which is placed in internal dumps, the method of vertical sections is applied. Findings. When mining a deep pit, the reduction in the distances for transporting overburden rocks from the lower levels is achieved due to the correct placement of transport communications and the formation of internal dumps. The allocation of development queues at the deposit makes it possible to form a pit of the first stage with the subsequent advancement of the mining front and determine the volume of rocks to be placed in the internal dump. The originality. The analysis was carried out and the sequence and methods for creating internal dumps were determined. The graphic dependences of the volumes of overburden rocks stored at each stage of the formation of dumps are established, without taking into account and taking into account the coefficient of loosening of the rocks. Practical implimintation. Within the empty space area of the Poltava Mining pit, it is possible to place significant volumes of overburden rocks, which will positively affect both the environment and the economic performance of the enterprise.
{"title":"Stages of creating an internal dump in a deep pit","authors":"O. Аnisimov, K. Bardakov","doi":"10.33271/crpnmu/68.007","DOIUrl":"https://doi.org/10.33271/crpnmu/68.007","url":null,"abstract":"Purpose. Filling with overburden rocks of the internal mined-out space of the pit and its individual sections is the main measure that contributes to the rational use of land around the pit in the development of deposits of significant size. There is a significant reduction in the cost of funds for the exca-vation, movement and storage of overburden rocks, as well as the extraction of minerals. Storage of overburden rocks in the mined-out area of deep pits reduces the distance of their transportation, saves significant land areas from disturbance by external dumps. It is known that the exploitation of a group of deposits or pit fields of significant size should be accompanied by the allocation of a pit of the first stage, mining it to the limiting contours and subsequent advancement of mining operations with the allocation of queues and storage of overburden rocks in the empty space. The methods. The procedure and methods for moving overburden rocks from the face to internal dumps with their subsequent storage during the development of deep pits according to the proposed technological scheme are determined. The calculations were performed using modern GIS technolo-gies using the K-mine software. To calculate the volume of overburden, which is placed in internal dumps, the method of vertical sections is applied. Findings. When mining a deep pit, the reduction in the distances for transporting overburden rocks from the lower levels is achieved due to the correct placement of transport communications and the formation of internal dumps. The allocation of development queues at the deposit makes it possible to form a pit of the first stage with the subsequent advancement of the mining front and determine the volume of rocks to be placed in the internal dump. The originality. The analysis was carried out and the sequence and methods for creating internal dumps were determined. The graphic dependences of the volumes of overburden rocks stored at each stage of the formation of dumps are established, without taking into account and taking into account the coefficient of loosening of the rocks. Practical implimintation. Within the empty space area of the Poltava Mining pit, it is possible to place significant volumes of overburden rocks, which will positively affect both the environment and the economic performance of the enterprise.","PeriodicalId":10466,"journal":{"name":"Collection of Research Papers of the National Mining University","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77720882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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