Pub Date : 1900-01-01DOI: 10.31474/1999-981x-2022-2-136-141
K. Yaroshovets-Baranova, Anatolij Vdovichenko
Purpose. Determining the current state of peat stocks and the overall energy potential in Ukraine. Drawing attention of the scientific community, authorities and the public to the problem of intensive development of peat production in Ukraine as the basis of economic growth of certain regions, significant improvement of the ecological state. Methods. Analytical methods for processing published sources, selection and systematisation of stock materials and reports on peat topics are applied in the work. Results. Information on the current state of reserves, availability of peat resources in administrative regions is provided, and the current state of the peat mining industry in Ukraine is analysed. The expediency of expanding the peat fuel base and potential opportunities for the development of the industry, which allow increasing the volume of peat production to 10 million tons per year in the shortest possible time, which will provide raw materials for more than 70 years, are substantiated, in addition, the development of new peat enterprises is carried out in a shorter time terms than the construction of coal mines. The production of a wide range of peat products, including peat fuel, opens the prospect of meeting the need for energy carriers at the expense of local resources, which will lead to a decrease in budgetary costs for the purchase of fuel in the regions and will improve the supply of peat for export, which is especially important in modern energy, social economic and environmental conditions of Ukraine. Scientific novelty. For the first time, attention was drawn to the importance of peat resources for socio-economic development in the conditions of the war and after the reconstruction of the country. Practical value. This study is aimed at clarifying modern peat reserves in Ukraine and their technological potential, conclusions are drawn that the balance peat reserves are sufficient and appropriate in their condition for their further development. The main areas of development of peat potential in Ukraine have been developed. It is equally important to inform the scientific community and the public about the state of peat resources in the country, since the extraction of peat as a fuel, raw material for various industries and agriculture is becoming truly relevant and important.
{"title":"PEAT AS AN ALTERNATIVE SOURCE OF ENERGY","authors":"K. Yaroshovets-Baranova, Anatolij Vdovichenko","doi":"10.31474/1999-981x-2022-2-136-141","DOIUrl":"https://doi.org/10.31474/1999-981x-2022-2-136-141","url":null,"abstract":"Purpose. Determining the current state of peat stocks and the overall energy potential in Ukraine. Drawing attention of the scientific community, authorities and the public to the problem of intensive development of peat production in Ukraine as the basis of economic growth of certain regions, significant improvement of the ecological state. Methods. Analytical methods for processing published sources, selection and systematisation of stock materials and reports on peat topics are applied in the work. Results. Information on the current state of reserves, availability of peat resources in administrative regions is provided, and the current state of the peat mining industry in Ukraine is analysed. The expediency of expanding the peat fuel base and potential opportunities for the development of the industry, which allow increasing the volume of peat production to 10 million tons per year in the shortest possible time, which will provide raw materials for more than 70 years, are substantiated, in addition, the development of new peat enterprises is carried out in a shorter time terms than the construction of coal mines. The production of a wide range of peat products, including peat fuel, opens the prospect of meeting the need for energy carriers at the expense of local resources, which will lead to a decrease in budgetary costs for the purchase of fuel in the regions and will improve the supply of peat for export, which is especially important in modern energy, social economic and environmental conditions of Ukraine. Scientific novelty. For the first time, attention was drawn to the importance of peat resources for socio-economic development in the conditions of the war and after the reconstruction of the country. Practical value. This study is aimed at clarifying modern peat reserves in Ukraine and their technological potential, conclusions are drawn that the balance peat reserves are sufficient and appropriate in their condition for their further development. The main areas of development of peat potential in Ukraine have been developed. It is equally important to inform the scientific community and the public about the state of peat resources in the country, since the extraction of peat as a fuel, raw material for various industries and agriculture is becoming truly relevant and important.","PeriodicalId":344647,"journal":{"name":"JOURNAL of Donetsk mining institute","volume":"183 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134157410","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 : 1900-01-01DOI: 10.31474/1999-981x-2021-1-110-118
Оlena Zavialova
Purpose. Improving the design of coal dust explosion localization devices to increase their speed, premature creation of an effective barrier from the cloud of extinguishing agent by reliable suppression of the fire front and, as a consequence, stop the spread of explosion on the mine, which will increase personnel protection from negative explosion factors. Methods. A comprehensive approach was used, which includes analysis and generalization of statistical data on explosions of methane-air and dust-air mixtures in mines of Ukraine, critical analysis of means for localization of coal dust explosions, computer modeling of rock deformations during the explosion. Results. The obtained data on the redistribution of explosion energy in the mountain massif allowed to scientifically substantiate a qualitatively new approach to obtaining information about the approach of the shock front. The results of the study confirmed that the loosening of dust accumulations under the influence of seismic waves, which are significantly ahead of the explosion front moving along the production, creates conditions for the formation of explosive dust concentration in front of the fire front. But early signaling from the seismic sensor of the presence of an explosion contributes to the formation of an explosion-proof environment to the approach of the fire front and provides prevention of the combustible environment and the creation of a non-combustible zone in the path of the fire front. Scientific novelty. A fundamentally new approach to explosion detection in mining is substantiated and a new design of a device for localization of coal dust explosions based on the disclosure of the mechanism of explosion energy propagation in the mountain environment is proposed. Practical significance. The use of the proposed device for localization of coal dust explosions allows to accelerate the localization of dust explosions, to create an effective barrier from the cloud of extinguishing agent by reliably suppressing the fire front and as a result to create an explosion-proof environment in mining.
{"title":"IMPROVEMENT OF MEANS OF LOCALIZATION OF COAL DUST EXPLOSIONS","authors":"Оlena Zavialova","doi":"10.31474/1999-981x-2021-1-110-118","DOIUrl":"https://doi.org/10.31474/1999-981x-2021-1-110-118","url":null,"abstract":"Purpose. Improving the design of coal dust explosion localization devices to increase their speed, premature creation of an effective barrier from the cloud of extinguishing agent by reliable suppression of the fire front and, as a consequence, stop the spread of explosion on the mine, which will increase personnel protection from negative explosion factors. Methods. A comprehensive approach was used, which includes analysis and generalization of statistical data on explosions of methane-air and dust-air mixtures in mines of Ukraine, critical analysis of means for localization of coal dust explosions, computer modeling of rock deformations during the explosion. Results. The obtained data on the redistribution of explosion energy in the mountain massif allowed to scientifically substantiate a qualitatively new approach to obtaining information about the approach of the shock front. The results of the study confirmed that the loosening of dust accumulations under the influence of seismic waves, which are significantly ahead of the explosion front moving along the production, creates conditions for the formation of explosive dust concentration in front of the fire front. But early signaling from the seismic sensor of the presence of an explosion contributes to the formation of an explosion-proof environment to the approach of the fire front and provides prevention of the combustible environment and the creation of a non-combustible zone in the path of the fire front. Scientific novelty. A fundamentally new approach to explosion detection in mining is substantiated and a new design of a device for localization of coal dust explosions based on the disclosure of the mechanism of explosion energy propagation in the mountain environment is proposed. Practical significance. The use of the proposed device for localization of coal dust explosions allows to accelerate the localization of dust explosions, to create an effective barrier from the cloud of extinguishing agent by reliably suppressing the fire front and as a result to create an explosion-proof environment in mining.","PeriodicalId":344647,"journal":{"name":"JOURNAL of Donetsk mining institute","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132787666","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 : 1900-01-01DOI: 10.31474/1999-981x-2019-2-39-50
R. Sobolevsky, А. Panasіuk, S. Iskov, O. Kamskyh, A. Kryvoruchko
{"title":"SUBSTANTIATION OF THE MAIN ASPECTS OF THE CLUSTER-FRACTAL METHODOLOGY FOR THE QUALITY MANAGEMENT OF RUBBLE-CRUSHED RAW MATERIALS","authors":"R. Sobolevsky, А. Panasіuk, S. Iskov, O. Kamskyh, A. Kryvoruchko","doi":"10.31474/1999-981x-2019-2-39-50","DOIUrl":"https://doi.org/10.31474/1999-981x-2019-2-39-50","url":null,"abstract":"","PeriodicalId":344647,"journal":{"name":"JOURNAL of Donetsk mining institute","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132648512","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 : 1900-01-01DOI: 10.31474/1999-981x-2021-2-26-36
V. Kotenko, Sergii Bashinsky, Ihor Piskun, Pavlo Tsymbaliuk
Purpose. The purpose of this work is to generalize the main aspects of the natural stone products’ reinforcement technology and to establish tendencies in the strength characteristics of these products. Methodology. The degree of relevance of the researched topic is established, the general characteristic of reinforcement as a technological process is given and the work on the given subject is analyzed. Recommendations for the preparation of samples for performance studies of strength characteristics are implemented and described. Recommendations on the selection and features of the use of tools for cutting, reinforcing elements and fixing mixture are given. The constituent elements of the experiment aimed at determining the strength characteristics of the samples are developed and described. Based on the results of the received data, the calculation of the values of the basic strength parameters during the destruction of the samples under the action of bending loads is performed. Results. Research of technology of reinforcement of products from a natural stone allows solving a number of problems on a way to improve the quality and competitiveness of production of the stone processing enterprises. A holistic and scientifically substantiated description of the reinforcement technology allows to systematize the knowledge about this technology and standardize the optimal order of its use, as well as to provide grounds for further study of its main technological aspects. In addition, the concomitant experimental establishment of improving the strength parameters of products as a result of their reinforcement proves the actual benefits of using this technology to improve the strength characteristics of the final natural stone product. Scientific novelty. The algorithm of using the technology of reinforcing natural stone with composite materials with indication of the peculiarities of this process is investigated, systematized and described. The degree of change in the strength characteristics of products as a result of their reinforcement is studied empirically. The expediency of using the technology of natural stone products reinforcement by comparing the strength properties of reinforced and non-reinforced products is substantiated. Scientific significance. The practical significance of the obtained results is embodied in the possibility of their use for the development of methodological and specific statutory guidelines for the introduction of reinforcement technology under the conditions of stone processing enterprises and for further research to optimize the described technological processes. At the same time, the results of the study of the strength parameters of composite elements reinforced with natural stone products are the firm argument that proves the feasibility of industrial use of this technology.
{"title":"APPLICATION OF COMPOSITE MATERIALS FOR REINFORCEMENT OF ARCHITECTURAL AND BUILDING STONE PRODUCTS","authors":"V. Kotenko, Sergii Bashinsky, Ihor Piskun, Pavlo Tsymbaliuk","doi":"10.31474/1999-981x-2021-2-26-36","DOIUrl":"https://doi.org/10.31474/1999-981x-2021-2-26-36","url":null,"abstract":"Purpose. The purpose of this work is to generalize the main aspects of the natural stone products’ reinforcement technology and to establish tendencies in the strength characteristics of these products. Methodology. The degree of relevance of the researched topic is established, the general characteristic of reinforcement as a technological process is given and the work on the given subject is analyzed. Recommendations for the preparation of samples for performance studies of strength characteristics are implemented and described. Recommendations on the selection and features of the use of tools for cutting, reinforcing elements and fixing mixture are given. The constituent elements of the experiment aimed at determining the strength characteristics of the samples are developed and described. Based on the results of the received data, the calculation of the values of the basic strength parameters during the destruction of the samples under the action of bending loads is performed. Results. Research of technology of reinforcement of products from a natural stone allows solving a number of problems on a way to improve the quality and competitiveness of production of the stone processing enterprises. A holistic and scientifically substantiated description of the reinforcement technology allows to systematize the knowledge about this technology and standardize the optimal order of its use, as well as to provide grounds for further study of its main technological aspects. In addition, the concomitant experimental establishment of improving the strength parameters of products as a result of their reinforcement proves the actual benefits of using this technology to improve the strength characteristics of the final natural stone product. Scientific novelty. The algorithm of using the technology of reinforcing natural stone with composite materials with indication of the peculiarities of this process is investigated, systematized and described. The degree of change in the strength characteristics of products as a result of their reinforcement is studied empirically. The expediency of using the technology of natural stone products reinforcement by comparing the strength properties of reinforced and non-reinforced products is substantiated. Scientific significance. The practical significance of the obtained results is embodied in the possibility of their use for the development of methodological and specific statutory guidelines for the introduction of reinforcement technology under the conditions of stone processing enterprises and for further research to optimize the described technological processes. At the same time, the results of the study of the strength parameters of composite elements reinforced with natural stone products are the firm argument that proves the feasibility of industrial use of this technology.","PeriodicalId":344647,"journal":{"name":"JOURNAL of Donetsk mining institute","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116964244","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 : 1900-01-01DOI: 10.31474/1999-981x-2021-1-25-36
O. Ahafonov, Pjsc “Donetskstal”, D. Chepiga, A. Polozhiy, I. Bessarab, A. Korol, A. Petrenko, O. Tkachuk
Purpose. Substantiation of expediency and admissibility of use of the simplified calculation models of a coal seam roof for an estimation of its stability under the action of external loadings. Methods. To achieve this purpose, the studies have been performed using the basic principles of the theory of elasticity and bending of plates, in which the coal seam roof is represented as a model of a rectangular plate or a beam with a symmetrical cross-section with different support conditions. Results. To substantiate and select methods for studying the bending deformations of the roof in the coal massif containing the maingates, the three-dimensional base plate model and the beam model are compared, taking into account the kinematic boundary conditions and the influence of external distributed load. Using the theory of plate bending, the equations for determining the deflections of the coal seam roof in three-dimensional basic models under certain assumptions have a large dimension. After the conditional division of the plate into beams of unit width and symmetrical section, when describing the normal deflections of the middle surface of the studied models, the transition from the partial derivative equation to the usual differential equations is carried out. In this case, the studies of bending deformations of roof rocks are reduced to solving a flat problem in the cross-section of the beam. A comparison of solutions obtained by the methods of the three-dimensional theory of elasticity and strength of materials was performed. For a beam with a symmetrical section, the deflection lies in a plane whose angle of inclination coincides with the direction of the applied load. The calculations did not take into account the difference between the intensity of the surface load applied to the beam. Differences in determining the magnitude of the deflections of the roof in the model of the plate concerning the model of the beam reach 5%, which is acceptable for mining problems. Scientific novelty. To study the bending deformations and determine the magnitude of the roof deflection in models under external uniform distributed load, placed within the simulated plate, a strip of unit width was selected, which has a symmetrical cross-section and is a characteristic component of the plate structure and it is considered as a separate load-bearing element with supports, the cross-sections of this element is remained flat when bending. The deflection of such a linear element is described by the differential equations of the bent axis of the beam without taking into account the integral stiffness of the model, and the vector of its complete displacement coincides with the vector of the force line. Practical significance. In the laboratory, to study the bending deformations and their impact on the stability of the coal seam roof under external loads, it is advisable to use a model of a single width beam with a symmetrical section with supports, the type of which is deter
{"title":"SUBSTANTIATION FOR SIMPLIFICATION OF CALCULATION MODELS FOR ASSESSMENT OF THE STABILITY OF ROOF ROCKS","authors":"O. Ahafonov, Pjsc “Donetskstal”, D. Chepiga, A. Polozhiy, I. Bessarab, A. Korol, A. Petrenko, O. Tkachuk","doi":"10.31474/1999-981x-2021-1-25-36","DOIUrl":"https://doi.org/10.31474/1999-981x-2021-1-25-36","url":null,"abstract":"Purpose. Substantiation of expediency and admissibility of use of the simplified calculation models of a coal seam roof for an estimation of its stability under the action of external loadings. Methods. To achieve this purpose, the studies have been performed using the basic principles of the theory of elasticity and bending of plates, in which the coal seam roof is represented as a model of a rectangular plate or a beam with a symmetrical cross-section with different support conditions. Results. To substantiate and select methods for studying the bending deformations of the roof in the coal massif containing the maingates, the three-dimensional base plate model and the beam model are compared, taking into account the kinematic boundary conditions and the influence of external distributed load. Using the theory of plate bending, the equations for determining the deflections of the coal seam roof in three-dimensional basic models under certain assumptions have a large dimension. After the conditional division of the plate into beams of unit width and symmetrical section, when describing the normal deflections of the middle surface of the studied models, the transition from the partial derivative equation to the usual differential equations is carried out. In this case, the studies of bending deformations of roof rocks are reduced to solving a flat problem in the cross-section of the beam. A comparison of solutions obtained by the methods of the three-dimensional theory of elasticity and strength of materials was performed. For a beam with a symmetrical section, the deflection lies in a plane whose angle of inclination coincides with the direction of the applied load. The calculations did not take into account the difference between the intensity of the surface load applied to the beam. Differences in determining the magnitude of the deflections of the roof in the model of the plate concerning the model of the beam reach 5%, which is acceptable for mining problems. Scientific novelty. To study the bending deformations and determine the magnitude of the roof deflection in models under external uniform distributed load, placed within the simulated plate, a strip of unit width was selected, which has a symmetrical cross-section and is a characteristic component of the plate structure and it is considered as a separate load-bearing element with supports, the cross-sections of this element is remained flat when bending. The deflection of such a linear element is described by the differential equations of the bent axis of the beam without taking into account the integral stiffness of the model, and the vector of its complete displacement coincides with the vector of the force line. Practical significance. In the laboratory, to study the bending deformations and their impact on the stability of the coal seam roof under external loads, it is advisable to use a model of a single width beam with a symmetrical section with supports, the type of which is deter","PeriodicalId":344647,"journal":{"name":"JOURNAL of Donetsk mining institute","volume":"393 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123536672","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 : 1900-01-01DOI: 10.31474/1999-981x-2021-2-113-123
V. Gogo, B. Kobilyanskyi, D. Chepiga, Nadiia Chernykh, O. Kipko, O. Kruzhylko
The results of the analytical study of the energy characteristics of the process of hydrodynamic conditioning of mine air are presented, which is especially important for the development of autonomous means of ensuring labour protection standards for temperature and dust in the working areas of deep coal mines. Purpose. The aim is to substantiate and analytically determine the main energy characteristics of the process of hydrodynamic conditioning of mine air for the development of functional modules of mine air conditioners with variable dimensions and capacities that meet the specific conditions of work areas in deep coal mines. Methods. The general research methodology is based on a systematic approach to the analysis of hydraulic and thermodynamic processes, which includes a set of analytical studies of the mixture of air with water droplets with justification and development of a mathematical model of the system “air – dust – drop” as a body of variable mass moving in working space. air conditioning, analysis of experimental data by methods of mathematical statistics and the theory of stochastic processes, as well as generalizations on defining patterns of determining the main energy characteristics of hydrodynamic conditioning of mine air. Results. The equation of the energy state of the active component of the working fluid flow of a mixture of air and water droplets is analytically determined; equation of thermodynamics of the element of the working mixture; differential equation of thermodynamic process in hydrodynamic air conditioner; energy characteristics of the relative exchange of the working fluid, conditioning and the environment; equation of the laws of change of pressure and temperature of the working fluid in the element of the hydrodynamic air conditioner. Scientific novelty. For the first time, the thermodynamic equation of the state of the working fluid element of a mixture of heat-potential air and drip water, as well as the equation of change of pressure and temperature of the working fluid in the hydrodynamic air conditioner element were analytically determined. Practical significance. The practical significance of the research results is that on the basis of energy characteristics it becomes possible to calculate the required initial temperature of water (defined for 10-20oC), which is fed into the hydrodynamic air conditioner and initial air temperature (for 30-45oC), which is a technical condition for development and operation of a hydrodynamic air conditioner for a specific local working zone of a coal mine mine in the practical provision of cooling of mine air to a sanitary temperature of 26oС.
{"title":"ENERGY CHARACTERISTICS OF THE PROCESS OF HYDRODYNAMIC CONDITIONING OF MINE AIR","authors":"V. Gogo, B. Kobilyanskyi, D. Chepiga, Nadiia Chernykh, O. Kipko, O. Kruzhylko","doi":"10.31474/1999-981x-2021-2-113-123","DOIUrl":"https://doi.org/10.31474/1999-981x-2021-2-113-123","url":null,"abstract":"The results of the analytical study of the energy characteristics of the process of hydrodynamic conditioning of mine air are presented, which is especially important for the development of autonomous means of ensuring labour protection standards for temperature and dust in the working areas of deep coal mines. Purpose. The aim is to substantiate and analytically determine the main energy characteristics of the process of hydrodynamic conditioning of mine air for the development of functional modules of mine air conditioners with variable dimensions and capacities that meet the specific conditions of work areas in deep coal mines. Methods. The general research methodology is based on a systematic approach to the analysis of hydraulic and thermodynamic processes, which includes a set of analytical studies of the mixture of air with water droplets with justification and development of a mathematical model of the system “air – dust – drop” as a body of variable mass moving in working space. air conditioning, analysis of experimental data by methods of mathematical statistics and the theory of stochastic processes, as well as generalizations on defining patterns of determining the main energy characteristics of hydrodynamic conditioning of mine air. Results. The equation of the energy state of the active component of the working fluid flow of a mixture of air and water droplets is analytically determined; equation of thermodynamics of the element of the working mixture; differential equation of thermodynamic process in hydrodynamic air conditioner; energy characteristics of the relative exchange of the working fluid, conditioning and the environment; equation of the laws of change of pressure and temperature of the working fluid in the element of the hydrodynamic air conditioner. Scientific novelty. For the first time, the thermodynamic equation of the state of the working fluid element of a mixture of heat-potential air and drip water, as well as the equation of change of pressure and temperature of the working fluid in the hydrodynamic air conditioner element were analytically determined. Practical significance. The practical significance of the research results is that on the basis of energy characteristics it becomes possible to calculate the required initial temperature of water (defined for 10-20oC), which is fed into the hydrodynamic air conditioner and initial air temperature (for 30-45oC), which is a technical condition for development and operation of a hydrodynamic air conditioner for a specific local working zone of a coal mine mine in the practical provision of cooling of mine air to a sanitary temperature of 26oС.","PeriodicalId":344647,"journal":{"name":"JOURNAL of Donetsk mining institute","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127032415","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 : 1900-01-01DOI: 10.31474/1999-981x-2019-1-79-86
Yevhenii Konopelko
{"title":"MINING-RESCUE SERVICE ACTIVITY IN MODERN UKRAINE","authors":"Yevhenii Konopelko","doi":"10.31474/1999-981x-2019-1-79-86","DOIUrl":"https://doi.org/10.31474/1999-981x-2019-1-79-86","url":null,"abstract":"","PeriodicalId":344647,"journal":{"name":"JOURNAL of Donetsk mining institute","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130766813","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 : 1900-01-01DOI: 10.31474/1999-981x-2022-1-114-123
S. Mineev, A. Prusova, Sergiy Demchenko, Denys Motronenko, R. Makarenko, P. Samopalenko, Oleksandr Mineev
Purpose. Consideration and analysis of the methodology for detecting fires occurring in coal mines in order to establish the main issues of temperature assessment and the stages of an extinguished fire. Methodology. The research methodology consists of analysing the methodology for detecting the stages of development and attenuation of endogenous and exogenous mine fires, as well as assessing their similarities and differences. Using the data obtained as a result of research, we consider the possible temperature in the source of a mine fire, its change in the process of burning and attenuation of the fire. A new approach to assessing the state of a fire is proposed in the form of a temperature-heat-conducting method for assessing its state and other solutions. Results. The main features of underground fire detection are the large length, branching of underground workings and the complexity of the ventilation system. Also, such physical parameters of the air jet are taken into account that are associated with heat and mass transfer (flow velocity, the magnitude of the temperature field, gas concentrations and the general composition of the gaseous medium) and not associated with heat and mass transfer (spectral characteristics, air density (or transparency), electromagnetic characteristics). Physical features are of the greatest interest from the point of view of detecting an underground fire. The most effective additional emergency criteria for early detection of an underground fire are the rate of increase in air temperature and the rate of increase in the concentration of carbon monoxide. The paper substantiates a method for assessing the state of a fire in a mine based on the dynamics of temperature increase in its source. After the write-off of the fire, reconnaissance of mine workings in an insulating fire area, control observations of the gas composition of the air and the absence of signs of spontaneous combustion of coal, the jumpers are dismantled and installation and restoration work is carried out according to a specially developed project. Scientific novelty. It has been established that the main stage of development of a mine fire can be most correctly established by the dynamics of temperature changes, the method of such an assessment is substantiated. Practical significance. The research results will be necessary to develop a method for establishing the main stage of development and attenuation of a mine fire.
{"title":"SOME ISSUES OF DETECTING THE DEVELOPMENT STAGES OF MINE FIRES","authors":"S. Mineev, A. Prusova, Sergiy Demchenko, Denys Motronenko, R. Makarenko, P. Samopalenko, Oleksandr Mineev","doi":"10.31474/1999-981x-2022-1-114-123","DOIUrl":"https://doi.org/10.31474/1999-981x-2022-1-114-123","url":null,"abstract":"Purpose. Consideration and analysis of the methodology for detecting fires occurring in coal mines in order to establish the main issues of temperature assessment and the stages of an extinguished fire. Methodology. The research methodology consists of analysing the methodology for detecting the stages of development and attenuation of endogenous and exogenous mine fires, as well as assessing their similarities and differences. Using the data obtained as a result of research, we consider the possible temperature in the source of a mine fire, its change in the process of burning and attenuation of the fire. A new approach to assessing the state of a fire is proposed in the form of a temperature-heat-conducting method for assessing its state and other solutions. Results. The main features of underground fire detection are the large length, branching of underground workings and the complexity of the ventilation system. Also, such physical parameters of the air jet are taken into account that are associated with heat and mass transfer (flow velocity, the magnitude of the temperature field, gas concentrations and the general composition of the gaseous medium) and not associated with heat and mass transfer (spectral characteristics, air density (or transparency), electromagnetic characteristics). Physical features are of the greatest interest from the point of view of detecting an underground fire. The most effective additional emergency criteria for early detection of an underground fire are the rate of increase in air temperature and the rate of increase in the concentration of carbon monoxide. The paper substantiates a method for assessing the state of a fire in a mine based on the dynamics of temperature increase in its source. After the write-off of the fire, reconnaissance of mine workings in an insulating fire area, control observations of the gas composition of the air and the absence of signs of spontaneous combustion of coal, the jumpers are dismantled and installation and restoration work is carried out according to a specially developed project. Scientific novelty. It has been established that the main stage of development of a mine fire can be most correctly established by the dynamics of temperature changes, the method of such an assessment is substantiated. Practical significance. The research results will be necessary to develop a method for establishing the main stage of development and attenuation of a mine fire.","PeriodicalId":344647,"journal":{"name":"JOURNAL of Donetsk mining institute","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132510633","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 : 1900-01-01DOI: 10.31474/1999-981x-2023-1-16-28
S. Volkov, H. Boichenko
Purpose. The stability of mine haulage drift has been evaluated using statistical analysis of arch yielding support failure under different protective measures to create safe working conditions for miners in deep coal mines with steeply dipping seams. Methods. A comprehensive approach was used, including a mine experiment , probability theory methods, and statistical analysis of experimental data. Results. The stability of mine haulage drift on steep seams was assessed in natural conditions under different protective measures. It was found that while using post-and-lintel support to protect the drift, with an arch yielding support failure frequency of w≥0.56 and normal distribution of single-factor dispersion analysis statistics, the loss of cross-sectional area of the excavation over the length of the mining site was about 50%. While using cribbing support for protection, with an arch yielding support failure frequency of w≥0.29, the loss of cross-sectional area was 30%. Empirical frequency w of the arch yielding support failure along the length of the excavation does not differ from theoretical frequencies, allowing the probability of an event related to deterioration of the stability of the mine haulage drift along the length of the mining site to be determined within a confidence interval under different protective measures. Novelty. A functional dependence was established to evaluate the stability of the mine haulage drift under different protective measures along the length of the mining site using single-factor dispersion analysis statistics of arch yielding support failure. Practical significance. Based on the statistical analysis of arch yielding support failure installed in the mine haulage drift, it is advisable to consider that the operational condition of the preparatory workings is ensured when using protective structures in the form of wooden cribbing support.
{"title":"ASSESSMENT OF THE STABILITY OF MINE HAULAGE DRIFT USING STATISTICAL ANALYSIS OF ARCH YIELDING SUPPORT FAILURE","authors":"S. Volkov, H. Boichenko","doi":"10.31474/1999-981x-2023-1-16-28","DOIUrl":"https://doi.org/10.31474/1999-981x-2023-1-16-28","url":null,"abstract":"Purpose. The stability of mine haulage drift has been evaluated using statistical analysis of arch yielding support failure under different protective measures to create safe working conditions for miners in deep coal mines with steeply dipping seams.\u0000\u0000Methods. A comprehensive approach was used, including a mine experiment , probability theory methods, and statistical analysis of experimental data.\u0000\u0000Results. The stability of mine haulage drift on steep seams was assessed in natural conditions under different protective measures. It was found that while using post-and-lintel support to protect the drift, with an arch yielding support failure frequency of w≥0.56 and normal distribution of single-factor dispersion analysis statistics, the loss of cross-sectional area of the excavation over the length of the mining site was about 50%. While using cribbing support for protection, with an arch yielding support failure frequency of w≥0.29, the loss of cross-sectional area was 30%. Empirical frequency w of the arch yielding support failure along the length of the excavation does not differ from theoretical frequencies, allowing the probability of an event related to deterioration of the stability of the mine haulage drift along the length of the mining site to be determined within a confidence interval under different protective measures.\u0000\u0000Novelty. A functional dependence was established to evaluate the stability of the mine haulage drift under different protective measures along the length of the mining site using single-factor dispersion analysis statistics of arch yielding support failure.\u0000\u0000Practical significance. Based on the statistical analysis of arch yielding support failure installed in the mine haulage drift, it is advisable to consider that the operational condition of the preparatory workings is ensured when using protective structures in the form of wooden cribbing support.","PeriodicalId":344647,"journal":{"name":"JOURNAL of Donetsk mining institute","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128847024","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 : 1900-01-01DOI: 10.31474/1999-981X-2020-2-206-214
N. Borodina, S. Cheberiachko, N. Shevchuk
Purpose: to develop a method of combining the elements of learning in the educational process, which allow forming the soft skills competences and principles of academic integrity of higher education students in teaching the disciplines by specialty “Civil Security”. Methodology. Analysis of the educational process from the standpoint of the formation of soft skills competences and principles of academic integrity of higher education students in teaching the disciplines by specialty “Civil Security”. Systematization of elements of the educational process at the stage of developing a training curriculum for the implementation of interactive teaching methods, which provide opportunities for higher education students along with the basic scheduled learning outcomes to master the soft skills additionally, as well as to familiarize with the principles of academic integrity. Distinguishing the skills from the existing variety of soft skills, the provision of which is most favorable when teaching a particular learning material. Results. Studies have shown that the disciplines related to labor protection and civil protection are favorable educational components for the formation of soft skills competences and principles of academic integrity. It is determined that the implementation of a combination of teaching the basic material and providing the Soft skills competences along with the knowledge of the principles of academic integrity can be reached in three stages: to build up the structure of teaching the basic material; to determine the list of Soft Skills competences; to carry out experimental check of the structure of teaching the basic material developed at the first stage. These stages formed the proposed method – a combination of various elements in the educational process into a single interconnected content. It is found that for the effective implementation of the proposed method, the selection of certain Soft Skills competences and examples of academic integrity should be based on the principles of a correct and recognized formation of Soft Skills competences. The received practical experience of the offered method implementation confirmed its prospects as it allows not only the developing of soft Skills competences of students in teaching the disciplines by specialty “Civil safety” but to provide the competences and scheduled results even more informatively in an interactive form. Scientific novelty: the formation of soft skills competences and principles of academic integrity of higher education students are considered not as additional functions of the educational process but as a basic component in teaching the disciplines by specialty “Civil Security” which is the basis of the proposed method. Practical significance: the method of combining the elements of learning in the educational process, which allow forming the soft skills competences and principles of academic integrity of higher education students in teaching the disciplines by spe
{"title":"FORMATION OF SOFT SKILLS COMPETENCES AND PRINCIPLES OF ACADEMIC INTEGRITY OF HIGHER EDUCATION STUDENTS IN TEACHING THE DISCIPLINES BY SPECIALTY “CIVIL SECURITY”","authors":"N. Borodina, S. Cheberiachko, N. Shevchuk","doi":"10.31474/1999-981X-2020-2-206-214","DOIUrl":"https://doi.org/10.31474/1999-981X-2020-2-206-214","url":null,"abstract":"Purpose: to develop a method of combining the elements of learning in the educational process, which allow forming the soft skills competences and principles of academic integrity of higher education students in teaching the disciplines by specialty “Civil Security”. Methodology. Analysis of the educational process from the standpoint of the formation of soft skills competences and principles of academic integrity of higher education students in teaching the disciplines by specialty “Civil Security”. Systematization of elements of the educational process at the stage of developing a training curriculum for the implementation of interactive teaching methods, which provide opportunities for higher education students along with the basic scheduled learning outcomes to master the soft skills additionally, as well as to familiarize with the principles of academic integrity. Distinguishing the skills from the existing variety of soft skills, the provision of which is most favorable when teaching a particular learning material. Results. Studies have shown that the disciplines related to labor protection and civil protection are favorable educational components for the formation of soft skills competences and principles of academic integrity. It is determined that the implementation of a combination of teaching the basic material and providing the Soft skills competences along with the knowledge of the principles of academic integrity can be reached in three stages: to build up the structure of teaching the basic material; to determine the list of Soft Skills competences; to carry out experimental check of the structure of teaching the basic material developed at the first stage. These stages formed the proposed method – a combination of various elements in the educational process into a single interconnected content. It is found that for the effective implementation of the proposed method, the selection of certain Soft Skills competences and examples of academic integrity should be based on the principles of a correct and recognized formation of Soft Skills competences. The received practical experience of the offered method implementation confirmed its prospects as it allows not only the developing of soft Skills competences of students in teaching the disciplines by specialty “Civil safety” but to provide the competences and scheduled results even more informatively in an interactive form. Scientific novelty: the formation of soft skills competences and principles of academic integrity of higher education students are considered not as additional functions of the educational process but as a basic component in teaching the disciplines by specialty “Civil Security” which is the basis of the proposed method. Practical significance: the method of combining the elements of learning in the educational process, which allow forming the soft skills competences and principles of academic integrity of higher education students in teaching the disciplines by spe","PeriodicalId":344647,"journal":{"name":"JOURNAL of Donetsk mining institute","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126695208","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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