Pub Date : 2023-01-15DOI: 10.30686/1609-9192-2022-6-54-59
O. Tailakov, E. A. Utkaev, M. Makeev
A retrospective analysis of methane emissions in underground and surface coal mining, as well as subsequent activities with coal mined in underground conditions in Kuzbass, is presented. Modern technologies for processing of coalbed methane, which is brought to the surface by ventilation and degassing systems of coal mines, to obtain chemical products, thermal and electrical energy, are considered. It is shown that a rational option for the utilization of degassing methane is its use as a fuel in gas generators; to reduce emissions of ventilation methane, it is necessary to improve and introduce technologies for regenerative thermal oxidation of depleted methane-air mixtures. Based on the use of discount factor analysis, an assessment of the economic efficiency of utilization of degassed and ventilation air methane was made. It has been established that it is economically feasible to obtain heat and electricity by utilizing of degassed methane, the positive economic effect of ventilation air methane processing projects is achieved by using additional incentives, including the sale of emission reduction units, taking into account the prices of the main energy resources. It is substantiated that the utilization of coalmine methane facilitates reduction of the carbon footprint of the coal mining industry. The obtained results can be used to select and implement rational technologies for capturing and processing coal methane in underground coal mining.
{"title":"Fugitive methane emissions and technologies for their reduction in Kuzbass coal mining","authors":"O. Tailakov, E. A. Utkaev, M. Makeev","doi":"10.30686/1609-9192-2022-6-54-59","DOIUrl":"https://doi.org/10.30686/1609-9192-2022-6-54-59","url":null,"abstract":"A retrospective analysis of methane emissions in underground and surface coal mining, as well as subsequent activities with coal mined in underground conditions in Kuzbass, is presented. Modern technologies for processing of coalbed methane, which is brought to the surface by ventilation and degassing systems of coal mines, to obtain chemical products, thermal and electrical energy, are considered. It is shown that a rational option for the utilization of degassing methane is its use as a fuel in gas generators; to reduce emissions of ventilation methane, it is necessary to improve and introduce technologies for regenerative thermal oxidation of depleted methane-air mixtures. Based on the use of discount factor analysis, an assessment of the economic efficiency of utilization of degassed and ventilation air methane was made. It has been established that it is economically feasible to obtain heat and electricity by utilizing of degassed methane, the positive economic effect of ventilation air methane processing projects is achieved by using additional incentives, including the sale of emission reduction units, taking into account the prices of the main energy resources. It is substantiated that the utilization of coalmine methane facilitates reduction of the carbon footprint of the coal mining industry. The obtained results can be used to select and implement rational technologies for capturing and processing coal methane in underground coal mining.","PeriodicalId":36119,"journal":{"name":"Gornaya Promyshlennost","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47440312","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}
Pub Date : 2023-01-15DOI: 10.30686/1609-9192-2022-6-83-86
A. M. Balashov
Russia currently needs a program to upgrade its production facilities in order to maintain their sustainable development and competitiveness of their products in the global market. The same applies to the mining companies. Modern means of ensuring the safety of employees of mining enterprises are needed, as well as the use of cutting edge digital technologies aimed at increasing the efficiency of mining, as well as reducing the cost of mineral extraction and processing. Such mechanisms are currently associated with the VI technological wave and involve an active introduction and use of digital technologies in the daily operation of mining enterprises. In connection with the foregoing, the author of this article made an attempt to make a scientific analysis and critical reflection on the introduction of modern digital technologies at mining enterprises in present-day Russia.
{"title":"Introduction of modern digital technologies at mining enterprises","authors":"A. M. Balashov","doi":"10.30686/1609-9192-2022-6-83-86","DOIUrl":"https://doi.org/10.30686/1609-9192-2022-6-83-86","url":null,"abstract":"Russia currently needs a program to upgrade its production facilities in order to maintain their sustainable development and competitiveness of their products in the global market. The same applies to the mining companies. Modern means of ensuring the safety of employees of mining enterprises are needed, as well as the use of cutting edge digital technologies aimed at increasing the efficiency of mining, as well as reducing the cost of mineral extraction and processing. Such mechanisms are currently associated with the VI technological wave and involve an active introduction and use of digital technologies in the daily operation of mining enterprises. In connection with the foregoing, the author of this article made an attempt to make a scientific analysis and critical reflection on the introduction of modern digital technologies at mining enterprises in present-day Russia.","PeriodicalId":36119,"journal":{"name":"Gornaya Promyshlennost","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42972163","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}
Pub Date : 2023-01-15DOI: 10.30686/1609-9192-2022-6-122-126
V. O. Oorzhak
In connection with the re-orientation of Russia's economic policy towards the East, an assessment of the potential for industrial development in such mining frontier territories of the country as the Tyva Republic becomes a major priority. For this purpose, the available academic literature as well as the results of scientific research have been analyzed. This study is also based on the data from official statistical sources, information obtained from the industrial companies in the region and the Internet resources. The analysis and synthesis methods used allowed to identify the main reasons for this lag, including the shortcomings of the current regulatory legislation. The gross regional product in the Republic of Tuva is only 243.05 thousand rubles per capita (vs. 645.9 thousand rubles in Russia and 535.3 thousand rubles in the Siberian Federal District). The paper proposes a hypothesis that a selective approach is required in regulating the economy of the country's depressed border territories with account of the characteristics, resources and potential of each of them. Empirical studies of the possibilities for industrial development of the one of the most depressed mining regions of Russia, i.e. the Tyva Republic, have been performed for the first time in the cross-border aspect with account of developing the available rich natural and mineral resources. An assessment of its potential, which is capable of achieving the industrial production volume of 350 billion rubles by 2035, has been made using linear regression methods. Measures have been proposed on creation of the legislative and legal regimes needed to attract investments in the development of the mining industry of Tuva, which can become a driving force of its dynamic social and economic development.
{"title":"Mining industry in a border region of Russia: assessment of the potential industrial development in the Republic of Tyva","authors":"V. O. Oorzhak","doi":"10.30686/1609-9192-2022-6-122-126","DOIUrl":"https://doi.org/10.30686/1609-9192-2022-6-122-126","url":null,"abstract":"In connection with the re-orientation of Russia's economic policy towards the East, an assessment of the potential for industrial development in such mining frontier territories of the country as the Tyva Republic becomes a major priority. For this purpose, the available academic literature as well as the results of scientific research have been analyzed. This study is also based on the data from official statistical sources, information obtained from the industrial companies in the region and the Internet resources. The analysis and synthesis methods used allowed to identify the main reasons for this lag, including the shortcomings of the current regulatory legislation. The gross regional product in the Republic of Tuva is only 243.05 thousand rubles per capita (vs. 645.9 thousand rubles in Russia and 535.3 thousand rubles in the Siberian Federal District). The paper proposes a hypothesis that a selective approach is required in regulating the economy of the country's depressed border territories with account of the characteristics, resources and potential of each of them. Empirical studies of the possibilities for industrial development of the one of the most depressed mining regions of Russia, i.e. the Tyva Republic, have been performed for the first time in the cross-border aspect with account of developing the available rich natural and mineral resources. An assessment of its potential, which is capable of achieving the industrial production volume of 350 billion rubles by 2035, has been made using linear regression methods. Measures have been proposed on creation of the legislative and legal regimes needed to attract investments in the development of the mining industry of Tuva, which can become a driving force of its dynamic social and economic development.","PeriodicalId":36119,"journal":{"name":"Gornaya Promyshlennost","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48733779","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}
Pub Date : 2023-01-15DOI: 10.30686/1609-9192-2022-6-61-68
V. N. Zakharov, N. N. Efremovtsev, V. Fedotenko
The topicality of this research is defined by the increasing volume of mining operations near settlements and production infrastructure, as well as by the increasing unit capacity of mining and haulage equipment and, consequently, by the growing volume of rock mass simultaneously blasted and prepared for excavation. Changes in the mining conditions at the operations of UK Kuzbassrazrezugol JSC have been analyzed. A brief analysis of research results on various factors affecting the degree of man-made impact of the blasting operations is presented. One of the ways to safely increase the volume of simultaneously blasted rock mass is the introduction of energy-saving environmentally friendly technologies in production and use of plastic explosives, which would ensure higher completeness of chemical transformations and the efficiency of the blast through the use of special fuel mixtures containing surfactants instead of diesel fuel in the compositions of granular industrial explosives. This will increase the contact surface area of the fuel and the oxidizer by several orders of magnitude as well as the stability and the energy-output ratio of the blasting charges with the zero oxygen-combustible balance. Reducing the consumption of explosives, energy intensity of mining, the man-made impact of blasting operations on the environment, the seismic action of the blast, the radius of the hazardous zone - all of this can be achieved by using charges placed in hoses of variable diameter when blasting wet and dry rock masses. The article shows the dependence of changes in the load on the atmosphere with increasing distance from the blast epicenter and with increasing weight of simultaneously detonated explosives in surface mining operations, as well as the dependence between the yield of fines and the size of the gap between the charge and the charging chamber.
{"title":"Research into man-made impact of rock blasting in surface mining of mineral deposits","authors":"V. N. Zakharov, N. N. Efremovtsev, V. Fedotenko","doi":"10.30686/1609-9192-2022-6-61-68","DOIUrl":"https://doi.org/10.30686/1609-9192-2022-6-61-68","url":null,"abstract":"The topicality of this research is defined by the increasing volume of mining operations near settlements and production infrastructure, as well as by the increasing unit capacity of mining and haulage equipment and, consequently, by the growing volume of rock mass simultaneously blasted and prepared for excavation. Changes in the mining conditions at the operations of UK Kuzbassrazrezugol JSC have been analyzed. A brief analysis of research results on various factors affecting the degree of man-made impact of the blasting operations is presented. One of the ways to safely increase the volume of simultaneously blasted rock mass is the introduction of energy-saving environmentally friendly technologies in production and use of plastic explosives, which would ensure higher completeness of chemical transformations and the efficiency of the blast through the use of special fuel mixtures containing surfactants instead of diesel fuel in the compositions of granular industrial explosives. This will increase the contact surface area of the fuel and the oxidizer by several orders of magnitude as well as the stability and the energy-output ratio of the blasting charges with the zero oxygen-combustible balance. Reducing the consumption of explosives, energy intensity of mining, the man-made impact of blasting operations on the environment, the seismic action of the blast, the radius of the hazardous zone - all of this can be achieved by using charges placed in hoses of variable diameter when blasting wet and dry rock masses. The article shows the dependence of changes in the load on the atmosphere with increasing distance from the blast epicenter and with increasing weight of simultaneously detonated explosives in surface mining operations, as well as the dependence between the yield of fines and the size of the gap between the charge and the charging chamber.","PeriodicalId":36119,"journal":{"name":"Gornaya Promyshlennost","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48314743","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}
Pub Date : 2023-01-15DOI: 10.30686/1609-9192-2022-6-111-121
A. Voronov, D. M. Dubinkin, Y. Voronov
Nowadays, it is difficult to imagine an open-pit mining (OPM) enterprise without an automated dispatching system operating in it, which provides control over the operation of technological shovel-truck systems (STS). The objective of this article is to review and document the mine dispatching systems' (DS) models and algorithms. The purpose is to understand these algorithms and the proposed academic solutions in this area to identify any gaps in the current literature and to open up opportunities to establish research questions that need to be addressed in an integrated simulation and optimization operational planning research framework. In this article, we review industrial mine dispatching systems and the main academic models behind such systems. The dispatching systems are divided into three subsequently related problems to review: the shortest path, production optimization and real-time dispatching. Finally, the limitations of current algorithms for dispatching systems are documented in terms of mining practice feasibility and optimality of the solution on large-scale problems. The results of this literature review enable us to evaluate the logical links between major components of an integrated simulation and optimization operational planning framework with current theory of mine dispatching systems.
{"title":"An overview of models for truck dispatching in open-pit mines","authors":"A. Voronov, D. M. Dubinkin, Y. Voronov","doi":"10.30686/1609-9192-2022-6-111-121","DOIUrl":"https://doi.org/10.30686/1609-9192-2022-6-111-121","url":null,"abstract":"Nowadays, it is difficult to imagine an open-pit mining (OPM) enterprise without an automated dispatching system operating in it, which provides control over the operation of technological shovel-truck systems (STS). The objective of this article is to review and document the mine dispatching systems' (DS) models and algorithms. The purpose is to understand these algorithms and the proposed academic solutions in this area to identify any gaps in the current literature and to open up opportunities to establish research questions that need to be addressed in an integrated simulation and optimization operational planning research framework. In this article, we review industrial mine dispatching systems and the main academic models behind such systems. The dispatching systems are divided into three subsequently related problems to review: the shortest path, production optimization and real-time dispatching. Finally, the limitations of current algorithms for dispatching systems are documented in terms of mining practice feasibility and optimality of the solution on large-scale problems. The results of this literature review enable us to evaluate the logical links between major components of an integrated simulation and optimization operational planning framework with current theory of mine dispatching systems.","PeriodicalId":36119,"journal":{"name":"Gornaya Promyshlennost","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45489847","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}
Pub Date : 2023-01-15DOI: 10.30686/1609-9192-2022-6-69-73
V.I. Mishnev, A. Plotnikov, A.A. Galimyanov, E. Kazarina, A. Galimyanov, K. Gevalo
The input control of explosive materials and the measurement of the detonation rate of the charge are important in the production of explosive work. The detonation rate of the explosive charge, as one of its most important characteristics affecting the quality of the explosion, depends on many factors, the main of which are: the quality of preparation of explosives and their components. Incorrectly selected parameters of drilling and blasting operations and poor quality of preparation of explosives lead to a decrease in the detonation rate up to detonation failures. In turn, detonation failures lead to an increase in material costs and an increase in the risk of negative events related to safety when handling explosive materials. The correct approach to preliminary quality control with the use of appropriate measurements will improve the efficiency and safety of preparing the rock mass for excavation by drilling and blasting. The article presents a technique for measuring the detonation velocity of a borehole charge with the corresponding results and conclusions, allowing timely measures to be taken to maintain the detonation velocity of explosives at the required level.
{"title":"The effect of emulsion explosives on the completeness of the detonation of the borehole charge","authors":"V.I. Mishnev, A. Plotnikov, A.A. Galimyanov, E. Kazarina, A. Galimyanov, K. Gevalo","doi":"10.30686/1609-9192-2022-6-69-73","DOIUrl":"https://doi.org/10.30686/1609-9192-2022-6-69-73","url":null,"abstract":"The input control of explosive materials and the measurement of the detonation rate of the charge are important in the production of explosive work. The detonation rate of the explosive charge, as one of its most important characteristics affecting the quality of the explosion, depends on many factors, the main of which are: the quality of preparation of explosives and their components. Incorrectly selected parameters of drilling and blasting operations and poor quality of preparation of explosives lead to a decrease in the detonation rate up to detonation failures. In turn, detonation failures lead to an increase in material costs and an increase in the risk of negative events related to safety when handling explosive materials. The correct approach to preliminary quality control with the use of appropriate measurements will improve the efficiency and safety of preparing the rock mass for excavation by drilling and blasting. The article presents a technique for measuring the detonation velocity of a borehole charge with the corresponding results and conclusions, allowing timely measures to be taken to maintain the detonation velocity of explosives at the required level.","PeriodicalId":36119,"journal":{"name":"Gornaya Promyshlennost","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47992184","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}
Pub Date : 2023-01-15DOI: 10.30686/1609-9192-2022-6-88-94
A. Khoreshok, D. M. Dubinkin, S. Markov, E. Tyuleneva, M. Tyulenev
A significant part of operations that are engaged in surface mining of coal are currently using hydraulic excavators, i.e. backhoes and less often face shovels, which reduces losses and improves productivity. However, a certain number of strip mines, especially those where mining activities are coming to a close, are still using mining rope shovels mostly domestically produced and of outdated models. Based on the method developed by the authors earlier and partially described in this article, the calculation of the layer height is made which will prevent additional losses of coal from the insufficient cutting depth. Formulas for calculating the layer height are proposed for five models of domestically produced rope shovels. The differences in geometric parameters of relative location of the elements that are used in the method described do not make it possible to establish a unified dependence of the worked-out layer height on the influencing factors. However, this method can be used to define the layer height for any model of the rope shovels, but this will require to know its operating parameters, i.e. the height of the shipper shaft, the distance from the excavator rotation axis to the tail piece of the boom, the minimum digging radius, etc.
{"title":"Reduction of coal losses in operation of mining rope shovels","authors":"A. Khoreshok, D. M. Dubinkin, S. Markov, E. Tyuleneva, M. Tyulenev","doi":"10.30686/1609-9192-2022-6-88-94","DOIUrl":"https://doi.org/10.30686/1609-9192-2022-6-88-94","url":null,"abstract":"A significant part of operations that are engaged in surface mining of coal are currently using hydraulic excavators, i.e. backhoes and less often face shovels, which reduces losses and improves productivity. However, a certain number of strip mines, especially those where mining activities are coming to a close, are still using mining rope shovels mostly domestically produced and of outdated models. Based on the method developed by the authors earlier and partially described in this article, the calculation of the layer height is made which will prevent additional losses of coal from the insufficient cutting depth. Formulas for calculating the layer height are proposed for five models of domestically produced rope shovels. The differences in geometric parameters of relative location of the elements that are used in the method described do not make it possible to establish a unified dependence of the worked-out layer height on the influencing factors. However, this method can be used to define the layer height for any model of the rope shovels, but this will require to know its operating parameters, i.e. the height of the shipper shaft, the distance from the excavator rotation axis to the tail piece of the boom, the minimum digging radius, etc.","PeriodicalId":36119,"journal":{"name":"Gornaya Promyshlennost","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48573090","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}
Pub Date : 2023-01-15DOI: 10.30686/1609-9192-2022-6-104-110
S. Ostapenko, S. Mesyats
The paper presents the results of the study of sedimentation stability of suspended finely-dispersed mineral particles based on satellite observations of their aggregation and sedimentation. The authors studied satellite data on self-purification of subarctic lakes polluted by apatite-nepheline, iron, and copper-nickel ore processing wastes. The multispectral images of lakes taken by Sentinel-2 spacecraft have allowed determining the average size of suspended finely-dispersed mineral processing wastes and the density of particle size distribution. To account for aggregation, the authors have designed a computer model of the dynamics of suspended particles and have set parameters of the forces of electrostatic and dispersion interactions of mineral particles from the Kola deposits. It is shown that the balance of repulsive electrostatic and dispersion attractive forces appears in the generation of aggregates of finely-dispersed mineral particles with characteristic fractal dimension, using Nepheline, Hematite, Quartz, and Pyrite as examples. The authors have developed an algorithm for matching the computer simulation results of the dynamics of suspended particles with the results of satellite images processing of lakes. The developed methodological approach makes it possible to determine the sedimentation stability of lakes’ pollution by finedispersed mineral processing wastes without surface observations. The research results allow calculating the sedimentation velocity of mineral particles and their aggregates of a given size. The good correspondence between the calculated parameters of particles aggregation and sedimentation and satellite observations data can be used to monitor the pollution of water bodies when adapting mineral processing technologies to modern production ecologization requirements, as well as to assess the waterenvironmental potential of the territory for rational management of natural resources.
{"title":"Methodological approach to the study of the sedimentation stability of finely-dispersed mineral processing waste by satellite data on lakes pollution","authors":"S. Ostapenko, S. Mesyats","doi":"10.30686/1609-9192-2022-6-104-110","DOIUrl":"https://doi.org/10.30686/1609-9192-2022-6-104-110","url":null,"abstract":"The paper presents the results of the study of sedimentation stability of suspended finely-dispersed mineral particles based on satellite observations of their aggregation and sedimentation. The authors studied satellite data on self-purification of subarctic lakes polluted by apatite-nepheline, iron, and copper-nickel ore processing wastes. The multispectral images of lakes taken by Sentinel-2 spacecraft have allowed determining the average size of suspended finely-dispersed mineral processing wastes and the density of particle size distribution. To account for aggregation, the authors have designed a computer model of the dynamics of suspended particles and have set parameters of the forces of electrostatic and dispersion interactions of mineral particles from the Kola deposits. It is shown that the balance of repulsive electrostatic and dispersion attractive forces appears in the generation of aggregates of finely-dispersed mineral particles with characteristic fractal dimension, using Nepheline, Hematite, Quartz, and Pyrite as examples. The authors have developed an algorithm for matching the computer simulation results of the dynamics of suspended particles with the results of satellite images processing of lakes. The developed methodological approach makes it possible to determine the sedimentation stability of lakes’ pollution by finedispersed mineral processing wastes without surface observations. The research results allow calculating the sedimentation velocity of mineral particles and their aggregates of a given size. The good correspondence between the calculated parameters of particles aggregation and sedimentation and satellite observations data can be used to monitor the pollution of water bodies when adapting mineral processing technologies to modern production ecologization requirements, as well as to assess the waterenvironmental potential of the territory for rational management of natural resources.","PeriodicalId":36119,"journal":{"name":"Gornaya Promyshlennost","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42665706","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}
Pub Date : 2023-01-15DOI: 10.30686/1609-9192-2022-6-46-53
V. Klishin, O. Tailakov, G. Opruk, E. A. Utkaev, S. Klishin
The paper demonstrates the need to develop methods of managing poorly caving roofs in the stoping and development faces as well as the ways of intensifying the degassing process of unrelieved coal seams to improve the technical and economic performance and safety of operation. Methods of the directional hydraulic fracturing (DHF) of the roof and the interval hydraulic fracturing (IHF) of the coal seam are suggested to eliminate the dynamic phenomena in coal mines as well as technological charts of their implementation. The DHF method consists in creating an initiating slot in the borehole walls, which acts as a stress concentrator, followed by its sealing with an insulating device, i.e. a packer. When a fluid is injected into this slot, the tensile stresses are created in the borehole walls and the fracture is forced to develop in a predetermined direction. The IHF method of the coal seam from the development workings using non-cased degassing holes of large and variable diameter consists in creation of transverse hydraulic fractures in the hole relative to its axis and increasing its gas recovery by an order of magnitude. This is achieved by using a double-sided packer with elastically expanding elements and a valve installed between them. Additional tangential stresses created in the borehole walls ensure the development of inelastic strain zone, leading to the formation of transverse cracks in the borehole. The results of numerical modeling of the stress-and-strain state of the rocks near the borehole where packer seals are installed using the finite element method are presented in the paper. Techniques and means to monitor the processes of hydraulic impact on the coal-rock massif are shown.
{"title":"Methods of hydraulic fracturing of poorly caving roof and coal seams to eliminate dynamic phenomena in coal mines","authors":"V. Klishin, O. Tailakov, G. Opruk, E. A. Utkaev, S. Klishin","doi":"10.30686/1609-9192-2022-6-46-53","DOIUrl":"https://doi.org/10.30686/1609-9192-2022-6-46-53","url":null,"abstract":"The paper demonstrates the need to develop methods of managing poorly caving roofs in the stoping and development faces as well as the ways of intensifying the degassing process of unrelieved coal seams to improve the technical and economic performance and safety of operation. Methods of the directional hydraulic fracturing (DHF) of the roof and the interval hydraulic fracturing (IHF) of the coal seam are suggested to eliminate the dynamic phenomena in coal mines as well as technological charts of their implementation. The DHF method consists in creating an initiating slot in the borehole walls, which acts as a stress concentrator, followed by its sealing with an insulating device, i.e. a packer. When a fluid is injected into this slot, the tensile stresses are created in the borehole walls and the fracture is forced to develop in a predetermined direction. The IHF method of the coal seam from the development workings using non-cased degassing holes of large and variable diameter consists in creation of transverse hydraulic fractures in the hole relative to its axis and increasing its gas recovery by an order of magnitude. This is achieved by using a double-sided packer with elastically expanding elements and a valve installed between them. Additional tangential stresses created in the borehole walls ensure the development of inelastic strain zone, leading to the formation of transverse cracks in the borehole. The results of numerical modeling of the stress-and-strain state of the rocks near the borehole where packer seals are installed using the finite element method are presented in the paper. Techniques and means to monitor the processes of hydraulic impact on the coal-rock massif are shown.","PeriodicalId":36119,"journal":{"name":"Gornaya Promyshlennost","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43685351","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}
Pub Date : 2023-01-15DOI: 10.30686/1609-9192-2022-6-131-136
S. S. Paramonov, D.Z. Kappushev, T.A. Manukyan, Kh.Yu. Evloyev, E.A. Barseghyan
The paper presents an analysis of seismotectonic conditions in the area of the Leninskoye coal deposit (Kuzbass). The territory of the Leninskiy district is belongs to the coverage zone of the Altai-Sayan regional seismic stations network. The results of research into intensification of seismic activity in the Kuzbass region using the local networks of seismic stations are considered. In the course of seismic observations in the territory of the Kemerovo region four seismically active zones been identified that encircle the largest industrial megacities of Kuzbass and that are responsible for 90% of the earthquake foci. According to the distribution of epicenters of the seismic events, the area of the Leninskoe coal deposit belongs to one of the seismic zones with the most actively developing natural and man-made seismic activity identified within the research. The research indicates that the induced seismic activity in Kuzbass prevails over the natural seismicity.
{"title":"Man-made seismicity in the area of the Leninskoye coal deposit","authors":"S. S. Paramonov, D.Z. Kappushev, T.A. Manukyan, Kh.Yu. Evloyev, E.A. Barseghyan","doi":"10.30686/1609-9192-2022-6-131-136","DOIUrl":"https://doi.org/10.30686/1609-9192-2022-6-131-136","url":null,"abstract":"The paper presents an analysis of seismotectonic conditions in the area of the Leninskoye coal deposit (Kuzbass). The territory of the Leninskiy district is belongs to the coverage zone of the Altai-Sayan regional seismic stations network. The results of research into intensification of seismic activity in the Kuzbass region using the local networks of seismic stations are considered. In the course of seismic observations in the territory of the Kemerovo region four seismically active zones been identified that encircle the largest industrial megacities of Kuzbass and that are responsible for 90% of the earthquake foci. According to the distribution of epicenters of the seismic events, the area of the Leninskoe coal deposit belongs to one of the seismic zones with the most actively developing natural and man-made seismic activity identified within the research. The research indicates that the induced seismic activity in Kuzbass prevails over the natural seismicity.","PeriodicalId":36119,"journal":{"name":"Gornaya Promyshlennost","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46718905","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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