Pub Date : 1900-01-01DOI: 10.31474/1999-981x-2021-1-119-134
O. Kofanova, O. Kofanov
Purpose. The aim of the study is to predict the potential risk of urban air pollution by toxic components of exhaust gases of vehicles in terms of the underground and terrestrial urban planning, in particular, street canyons, underground pedestrian crossings, underground parking lots, etc. Methods. The following research methodology was used in the work: on the basis of space-time field observations of the intensity, density and speed of traffic flows, as well as using mathematical modeling methods it was proved that urban air pollution (of the roadside space, adjacent territories of well-type yards, underground infrastructure, etc.) by toxicants, which are components of vehicle engine emissions, remains at a high, often environmentally hazardous level, and therefore requires urgent development and implementation of the appropriate precautionary measures. Results. The analysis of problems of ecological safety of city objects of terrestrial (high-traffic roads, adjacent territories) and underground (underground pedestrian crossings, garages, parking lots) urbanistics allowed to reveal direct and indirect negative influences on air environment from emissions of motor vehicles; using mathematical modeling methods to predict the fields of concentration of major toxicants and identify areas of local emergency pollution in different weather conditions, identify the most unfavorable directions and wind speeds and assess the level of environmental hazards to human health (residents of houses located in the well-type yards, pedestrians, owners of underground garages (parking lots), tenants of parking spaces, etc.). Scientific novelty. The study revealed direct and indirect negative effects of the motor transport complex on the air environment of urban territories (objects of terrestrial and underground urbanistics), in particular, based on the use of mathematical modeling methods. The level of environmental danger to the health of urban residents has been assessed. Practical significance. The results of the study can be used in the design and construction of urban infrastructure, as well as to reduce the technogenic load on the environment and human health in existing objects of terrestrial and underground urbanistics and other city areas.
{"title":"ECOLOGICAL PROBLEMS OF UNDERGROUND AND TERRESTRIAL URBANISTICS","authors":"O. Kofanova, O. Kofanov","doi":"10.31474/1999-981x-2021-1-119-134","DOIUrl":"https://doi.org/10.31474/1999-981x-2021-1-119-134","url":null,"abstract":"Purpose. The aim of the study is to predict the potential risk of urban air pollution by toxic components of exhaust gases of vehicles in terms of the underground and terrestrial urban planning, in particular, street canyons, underground pedestrian crossings, underground parking lots, etc. Methods. The following research methodology was used in the work: on the basis of space-time field observations of the intensity, density and speed of traffic flows, as well as using mathematical modeling methods it was proved that urban air pollution (of the roadside space, adjacent territories of well-type yards, underground infrastructure, etc.) by toxicants, which are components of vehicle engine emissions, remains at a high, often environmentally hazardous level, and therefore requires urgent development and implementation of the appropriate precautionary measures. Results. The analysis of problems of ecological safety of city objects of terrestrial (high-traffic roads, adjacent territories) and underground (underground pedestrian crossings, garages, parking lots) urbanistics allowed to reveal direct and indirect negative influences on air environment from emissions of motor vehicles; using mathematical modeling methods to predict the fields of concentration of major toxicants and identify areas of local emergency pollution in different weather conditions, identify the most unfavorable directions and wind speeds and assess the level of environmental hazards to human health (residents of houses located in the well-type yards, pedestrians, owners of underground garages (parking lots), tenants of parking spaces, etc.). Scientific novelty. The study revealed direct and indirect negative effects of the motor transport complex on the air environment of urban territories (objects of terrestrial and underground urbanistics), in particular, based on the use of mathematical modeling methods. The level of environmental danger to the health of urban residents has been assessed. Practical significance. The results of the study can be used in the design and construction of urban infrastructure, as well as to reduce the technogenic load on the environment and human health in existing objects of terrestrial and underground urbanistics and other city areas.","PeriodicalId":344647,"journal":{"name":"JOURNAL of Donetsk mining institute","volume":"77-78 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":"124907401","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-2019-1-53-64
V. Gogo, A. Kipko, N. Vlasenko, Y. Simonova, A. Polozhy, Yevgen Podkopayev
{"title":"FEATURES OF THE STRESSED-DEFORMED STATE OF THE SIDE BREEDS IN THE ASSESSMENT OF THE OPERATIONAL STATE OF MINING OPERATIONS","authors":"V. Gogo, A. Kipko, N. Vlasenko, Y. Simonova, A. Polozhy, Yevgen Podkopayev","doi":"10.31474/1999-981X-2019-1-53-64","DOIUrl":"https://doi.org/10.31474/1999-981X-2019-1-53-64","url":null,"abstract":"","PeriodicalId":344647,"journal":{"name":"JOURNAL of Donetsk mining institute","volume":"46 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":"125412159","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-2020-2-118-126
D. Zaikina, T. N. M. Tugan-Baranovsky
The purpose of the work is to assess the scope of action of international environmental standards, focusing on existing gaps, including in the light of the parallel evolution of bilateral and multilateral international cooperation in the field of environmental protection. Research methods. An integrated approach is applied, including the logical generalization, collection, systematization and analysis of actual data; methods of system analysis. Results. In this article recent advances in international environmental law are summarized and provisions, concepts, analytical tools, and key issues used to achieve environmental goals are studied. The analysis was conducted by logical generalization and proved that application of international environmental law remains a topical issue both at the national and international levels. In many countries, national application is constrained by the lack of appropriate national legislation, financial resources, environmentally sound technologies and institutional capacity. National application can be improved by increasing the relevance of environmental considerations in other sectors and increasing participation of non-state actors in decision making and application. Scientific novelty consists in the author’s approach to determining the priority directions for optimizing the application of international law in the field of environmental protection, the use of regulatory combinations, economic, voluntary and informational instruments is required, while a set of policy measures is determined on the basis of available data on cost effectiveness. Practical significance is that scientific research clearly, accessibly and consistently demonstrates the imperative for complex regulatory regimes with more flexible and dynamic standards-setting processes, necessitating a pragmatic and forward-looking approach.
{"title":"INTERNATIONAL CO-OPERATION IN THE FIELD OF ENVIRONMENTAL PROTECTION: IMPLEMENTATION AND TRENDS ESTABLISHMENT IN UKRAINE","authors":"D. Zaikina, T. N. M. Tugan-Baranovsky","doi":"10.31474/1999-981X-2020-2-118-126","DOIUrl":"https://doi.org/10.31474/1999-981X-2020-2-118-126","url":null,"abstract":"The purpose of the work is to assess the scope of action of international environmental standards, focusing on existing gaps, including in the light of the parallel evolution of bilateral and multilateral international cooperation in the field of environmental protection. Research methods. An integrated approach is applied, including the logical generalization, collection, systematization and analysis of actual data; methods of system analysis. Results. In this article recent advances in international environmental law are summarized and provisions, concepts, analytical tools, and key issues used to achieve environmental goals are studied. The analysis was conducted by logical generalization and proved that application of international environmental law remains a topical issue both at the national and international levels. In many countries, national application is constrained by the lack of appropriate national legislation, financial resources, environmentally sound technologies and institutional capacity. National application can be improved by increasing the relevance of environmental considerations in other sectors and increasing participation of non-state actors in decision making and application. Scientific novelty consists in the author’s approach to determining the priority directions for optimizing the application of international law in the field of environmental protection, the use of regulatory combinations, economic, voluntary and informational instruments is required, while a set of policy measures is determined on the basis of available data on cost effectiveness. Practical significance is that scientific research clearly, accessibly and consistently demonstrates the imperative for complex regulatory regimes with more flexible and dynamic standards-setting processes, necessitating a pragmatic and forward-looking approach.","PeriodicalId":344647,"journal":{"name":"JOURNAL of Donetsk mining institute","volume":"7 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":"127873543","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-2021-1-19-24
Denys Dovhal
Purpose. The purpose of this work is to determine and geometric analysis of possible forms of trajectories of the working tool, depending on the design and operating parameters of the torus planetary executive bodies of mining machines in the destruction of rock mass or minerals. Methods. Studies are based on the provisions of analytical and differential geometry, geometric modeling of objects, processes and phenomena, the theory of destruction of rocks and coal, as well as the theory of planetary executive bodies of mining machines. Results. On the basis of the mathematical model of the working process of the torus planetary executive body, the main forms of the trajectory of the spatial motion of a single working tool are considered, their geometric analysis is carried out. The characteristic features of the change in the shape of the trajectories are revealed when the values of the design and operating parameters of the executive body are varied, and their frequency is determined. Scientific novelty. For the first time, in the general case, a mathematical model of the process of movement of a single tool of a torus planetary executive body was analyzed in order to identify all possible characteristic forms of trajectories and, as a result, face surfaces, which constitute the basis for further research and optimization of the kinematic and dynamic characteristics of the process of destruction of a rock mass by executive bodies of mining machines. of the specified type. Practical significance. Scientifically substantiated data on the influence of the values of the design and operating parameters on the parameters of the tool path, the degree of surface treatment of the face and the conditions for the transition of the torus executive body to other design cases of the planetary executive body have been obtained. All this in the future will make it possible to determine rational relationships between the design and operating parameters of the torus executive body, which will provide an effective “grid” of cutting, which will minimize the energy indicators of the destruction process and improve the fractional composition of the separated rock mass.
{"title":"RESEARCH OF THE FORMS OF MOTION TRAJECTORIES OF THE WORKING TOOL OF TOROIDAL PLANETARY EXECUTIVE UNITS OF MINING MACHINES","authors":"Denys Dovhal","doi":"10.31474/1999-981x-2021-1-19-24","DOIUrl":"https://doi.org/10.31474/1999-981x-2021-1-19-24","url":null,"abstract":"Purpose. The purpose of this work is to determine and geometric analysis of possible forms of trajectories of the working tool, depending on the design and operating parameters of the torus planetary executive bodies of mining machines in the destruction of rock mass or minerals. Methods. Studies are based on the provisions of analytical and differential geometry, geometric modeling of objects, processes and phenomena, the theory of destruction of rocks and coal, as well as the theory of planetary executive bodies of mining machines. Results. On the basis of the mathematical model of the working process of the torus planetary executive body, the main forms of the trajectory of the spatial motion of a single working tool are considered, their geometric analysis is carried out. The characteristic features of the change in the shape of the trajectories are revealed when the values of the design and operating parameters of the executive body are varied, and their frequency is determined. Scientific novelty. For the first time, in the general case, a mathematical model of the process of movement of a single tool of a torus planetary executive body was analyzed in order to identify all possible characteristic forms of trajectories and, as a result, face surfaces, which constitute the basis for further research and optimization of the kinematic and dynamic characteristics of the process of destruction of a rock mass by executive bodies of mining machines. of the specified type. Practical significance. Scientifically substantiated data on the influence of the values of the design and operating parameters on the parameters of the tool path, the degree of surface treatment of the face and the conditions for the transition of the torus executive body to other design cases of the planetary executive body have been obtained. All this in the future will make it possible to determine rational relationships between the design and operating parameters of the torus executive body, which will provide an effective “grid” of cutting, which will minimize the energy indicators of the destruction process and improve the fractional composition of the separated rock mass.","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":"130092932","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-2022-1-124-131
M. Rudynets, V. Fedorchuk-Moroz
Purpose: The goal is to develop means to improve the public knowledge and skills for emergencies using an innovative project approach. Methodology: use of special research methods – collecting and summarizing information, critical analysis and forecasting, sociological surveys, and statistical data processing by Excel. Results. The expediency of development and implementation of projects aimed at getting the population interested in emergencies while in public places is determined. It was found that the emergency training system does not contain a component of motivating the population to master the necessary skills. The proposed project satisfies all stakeholders. The project approach will increase the population’s interest in preparing for emergencies and help reduce the overall psychological stress. The possibility of using these projects is confirmed through theoretical and practical results obtained by opinion polls. Under martial law, the proposed project can help reduce the psychological burden and avoid panic among mall visitors оf public places. Scientific novelty: the research describes the first substantiated possibility of using a project approach to improving the system of preparation and getting the population interested in actions during emergencies in public places. Practical significance: popularizing safety measures in emergencies in public places. The proposed solutions will increase knowledge and reduce the risk of injury to people in emergencies.
{"title":"INNOVATIVE PROJECT APPROACH TO RAISING PUBLIC INTEREST IN EMERGENCY PROTECTION","authors":"M. Rudynets, V. Fedorchuk-Moroz","doi":"10.31474/1999-981x-2022-1-124-131","DOIUrl":"https://doi.org/10.31474/1999-981x-2022-1-124-131","url":null,"abstract":"Purpose: The goal is to develop means to improve the public knowledge and skills for emergencies using an innovative project approach. Methodology: use of special research methods – collecting and summarizing information, critical analysis and forecasting, sociological surveys, and statistical data processing by Excel. Results. The expediency of development and implementation of projects aimed at getting the population interested in emergencies while in public places is determined. It was found that the emergency training system does not contain a component of motivating the population to master the necessary skills. The proposed project satisfies all stakeholders. The project approach will increase the population’s interest in preparing for emergencies and help reduce the overall psychological stress. The possibility of using these projects is confirmed through theoretical and practical results obtained by opinion polls. Under martial law, the proposed project can help reduce the psychological burden and avoid panic among mall visitors оf public places. Scientific novelty: the research describes the first substantiated possibility of using a project approach to improving the system of preparation and getting the population interested in actions during emergencies in public places. Practical significance: popularizing safety measures in emergencies in public places. The proposed solutions will increase knowledge and reduce the risk of injury to people in emergencies.","PeriodicalId":344647,"journal":{"name":"JOURNAL of Donetsk mining institute","volume":"30 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":"130578745","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-2022-2-108-121
A. Serhiienko, I. Liashok, L. Serhiienko, S. Podkopaiev, O. Kohtieva
Purpose. Process research of the parameters of the cave-in rock formation in roof of the 9th northern longwall of block #10 “Mines Control Pokrovske” Method. Numerical modeling of the volumetric stress-strain state (finite element method), the method of continuous media, the method of contact interaction of surfaces, analytical studies of the process of the formation of rock cave-in of the immediate roof. Results. The article presents the results of numerical modeling of the three-dimensional stress-strain state of a layered rock massif, with boundary conditions of contact interaction between rock layers and with the load of gravitational forces. The results of the grapho-analytical method of modeling the volume formation of fallout formation are presented on the example of working out the 9th northern bench of block No. 10 “PRAT Mine Management Pokrovske”. Calculated collapse parameters of the direct and main roof. The obtained parameters of fallout and their location. Scientific novelty The results of predicting the formation of cave-in rock the immediate roof of cleaning potholes using the volumetric stress-deformed state of a layered massif with the gravitational load of rock layers are presented. The results of predicting the formation of cave-in rock using the rock crack resistance criterion are presented. Practical significance. The practical significance lies in the method of predicting the processes of cave-in rock formation in the immediate roof during the working of coal seams and determining their parameters. The calculation process of numerical modeling of the step-by-step increase of the produced space gives a general picture of the state of rock layers above the produced space and their destruction zones, and determines the following measures to strengthen the roof in the coal face.
{"title":"PREDICTION OF THE PARAMETERS OF THE CAVE-IN ROCK FORMATION IN ROOF OF THE LONGWALL OF COAL MINES","authors":"A. Serhiienko, I. Liashok, L. Serhiienko, S. Podkopaiev, O. Kohtieva","doi":"10.31474/1999-981x-2022-2-108-121","DOIUrl":"https://doi.org/10.31474/1999-981x-2022-2-108-121","url":null,"abstract":"Purpose. Process research of the parameters of the cave-in rock formation in roof of the 9th northern longwall of block #10 “Mines Control Pokrovske” Method. Numerical modeling of the volumetric stress-strain state (finite element method), the method of continuous media, the method of contact interaction of surfaces, analytical studies of the process of the formation of rock cave-in of the immediate roof. Results. The article presents the results of numerical modeling of the three-dimensional stress-strain state of a layered rock massif, with boundary conditions of contact interaction between rock layers and with the load of gravitational forces. The results of the grapho-analytical method of modeling the volume formation of fallout formation are presented on the example of working out the 9th northern bench of block No. 10 “PRAT Mine Management Pokrovske”. Calculated collapse parameters of the direct and main roof. The obtained parameters of fallout and their location. Scientific novelty The results of predicting the formation of cave-in rock the immediate roof of cleaning potholes using the volumetric stress-deformed state of a layered massif with the gravitational load of rock layers are presented. The results of predicting the formation of cave-in rock using the rock crack resistance criterion are presented. Practical significance. The practical significance lies in the method of predicting the processes of cave-in rock formation in the immediate roof during the working of coal seams and determining their parameters. The calculation process of numerical modeling of the step-by-step increase of the produced space gives a general picture of the state of rock layers above the produced space and their destruction zones, and determines the following measures to strengthen the roof in the coal face.","PeriodicalId":344647,"journal":{"name":"JOURNAL of Donetsk mining institute","volume":"38 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":"122198911","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-2022-1-172-181
Oleksandr Tokarskiy
Goal. Development of methods for studying the impact of dangerous and harmful factors on the mountain rescuer during search and rescue operations at low ambient temperatures. Method. The article presents the results of the study according to the methods of Euro standards, namely: experiments, theoretical analysis. Results. The article examines in detail the problem of protection of mountain rescue workers during search and rescue operations in mountainous areas, which is characterized by limited transport accessibility, and proposes methodological principles for studying the impact of low temperatures on the functional state of rescue workers. A certain algorithm for conducting a study of the level of protection of mountain rescuers is proposed and the need to standardize the time of search and rescue operations for effective work and minimal damage to the health of the mountain rescue service. Scientific novelty. The article for the first time uses the method of determining the degree of influence of low temperatures on the human body, in particular on the functional state of a mountain rescue worker, taking into account the level of his protection by electroencephalogram (EEG). Practical significance. The recommended method will ensure the formation of requirements for the regulations of all search and rescue operations by mountain rescue workers in areas with rugged terrain and relative elevations of 500 m and more within a radius of 25 km, and areas above 900 m and above sea level. Accordingly, the implementation of the proposed requirements of the regulation will ensure the rationing of the time of work of varying degrees of load at low temperatures that affect the human body.
{"title":"METHODICAL PRINCIPLES FOR DETERMINING THE OPTIMAL WORKING TIME OF A MOUNTAIN RESCUER","authors":"Oleksandr Tokarskiy","doi":"10.31474/1999-981x-2022-1-172-181","DOIUrl":"https://doi.org/10.31474/1999-981x-2022-1-172-181","url":null,"abstract":"Goal. Development of methods for studying the impact of dangerous and harmful factors on the mountain rescuer during search and rescue operations at low ambient temperatures. Method. The article presents the results of the study according to the methods of Euro standards, namely: experiments, theoretical analysis. Results. The article examines in detail the problem of protection of mountain rescue workers during search and rescue operations in mountainous areas, which is characterized by limited transport accessibility, and proposes methodological principles for studying the impact of low temperatures on the functional state of rescue workers. A certain algorithm for conducting a study of the level of protection of mountain rescuers is proposed and the need to standardize the time of search and rescue operations for effective work and minimal damage to the health of the mountain rescue service. Scientific novelty. The article for the first time uses the method of determining the degree of influence of low temperatures on the human body, in particular on the functional state of a mountain rescue worker, taking into account the level of his protection by electroencephalogram (EEG). Practical significance. The recommended method will ensure the formation of requirements for the regulations of all search and rescue operations by mountain rescue workers in areas with rugged terrain and relative elevations of 500 m and more within a radius of 25 km, and areas above 900 m and above sea level. Accordingly, the implementation of the proposed requirements of the regulation will ensure the rationing of the time of work of varying degrees of load at low temperatures that affect the human body.","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":"122859472","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-2022-1-86-99
S. Mineev
Meta. The purpose of the research is to substantiate the main characteristics of the unloading zone in the bottom-hole part of the seam and to clarify the parameters of its use for the safe mining of outburst-hazardous coal seams. Research methodology. The article analyzes the results of determining the size of the unloading zone by various methods of monitoring the effectiveness of the measures taken and the danger of coal mining in this zone. Results. The definition of the unloading zone as some degassed part of the mountain massif with destroyed or extracted coal is formulated, when discussing the obtained results. It has been established that in this zone there is a possibility of excavation coal to a given depth without anti-emission measures with the possibility of adjusting the amount of excavation by the depth of the unloading zone, taking into account non-reducing advance. The size of the unloading zone is determined by the time bottomhole sludge, taking into account: SSS (stress-strain state), PMP (physical and mechanical properties), geological factors and technology of destruction of the array. Scientific novelty. The size of the unloading zone may vary depending on the technological factor (excavation technology). For example, with a fast plow cut, the zone does not have time to form, i.e. when a plow (combine) either takes out a strip along the entire length of the lava or can be cut forward by 2-3 m. Practical significance. The performed studies established the fact of the formation of an unloaded zone in the bottom-hole part of the formation. The time interval for the formation of an unloading zone is from 1 to 3 hours for mechanized coal mining and up to 24 hours for explosive breaking of coal, which is practically used in regulating the duration of technological processes. The unloading zone on outburst-prone formations varies from the minimum dimensions close to zero to several meters.
{"title":"ASSESSMENT OF THE PARAMETERS OF THE UNLOADING ZONE AND ITS USE FOR THE SAFE MINING OF OUTBURST-HAZARDOUS COAL SEAMS","authors":"S. Mineev","doi":"10.31474/1999-981x-2022-1-86-99","DOIUrl":"https://doi.org/10.31474/1999-981x-2022-1-86-99","url":null,"abstract":"Meta. The purpose of the research is to substantiate the main characteristics of the unloading zone in the bottom-hole part of the seam and to clarify the parameters of its use for the safe mining of outburst-hazardous coal seams. Research methodology. The article analyzes the results of determining the size of the unloading zone by various methods of monitoring the effectiveness of the measures taken and the danger of coal mining in this zone. Results. The definition of the unloading zone as some degassed part of the mountain massif with destroyed or extracted coal is formulated, when discussing the obtained results. It has been established that in this zone there is a possibility of excavation coal to a given depth without anti-emission measures with the possibility of adjusting the amount of excavation by the depth of the unloading zone, taking into account non-reducing advance. The size of the unloading zone is determined by the time bottomhole sludge, taking into account: SSS (stress-strain state), PMP (physical and mechanical properties), geological factors and technology of destruction of the array. Scientific novelty. The size of the unloading zone may vary depending on the technological factor (excavation technology). For example, with a fast plow cut, the zone does not have time to form, i.e. when a plow (combine) either takes out a strip along the entire length of the lava or can be cut forward by 2-3 m. Practical significance. The performed studies established the fact of the formation of an unloaded zone in the bottom-hole part of the formation. The time interval for the formation of an unloading zone is from 1 to 3 hours for mechanized coal mining and up to 24 hours for explosive breaking of coal, which is practically used in regulating the duration of technological processes. The unloading zone on outburst-prone formations varies from the minimum dimensions close to zero to several meters.","PeriodicalId":344647,"journal":{"name":"JOURNAL of Donetsk mining institute","volume":"47 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":"115497051","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-2023-1-7-15
S. Vlasov, I. Sadovenko, Yavhen Moldavanov, S. Timchenko
Purpose. Determination of a rational option for using a type of mechanized fastening in the conditions of simultaneous flooding of mines and mining operations, taking into account the manifestations of hydrostatic pressure formed in the main roof of the coal seam. Method. The research used the method of numerical modelling and analysis of the displacement of the sole and roof of the coal seam and the prediction of the step-by-step progress of the cleaning pit in the layered transversely isotropic massif of rocks using the Solid Works 2019 software package. Results. Obtained statistical parameters of the use of mechanized fastening in the hydrogeotechnical conditions of the mines of Western Donbas based on the collected actual data of the mining enterprises of PJSC «DTEK Pavlogradvugillia». The reasonable feasibility of using a supporting and fencing four-pillar, two-row mechanized fastening of the KD-80 type by comparing the results of modelling its operation with a two-pillar single-row fastening of the Ostroj-70/125 type in conditions of a layered massif with manifestations of hydrostatic pressure. Scientific novelty. For the first time, a geotechnical forecast was performed on the basis of numerical comparative modelling of the operation of single- and double-row mechanized fasteners in the conditions of simultaneous flooding of the mine and mining operations, taking into account the manifestations of hydrostatic pressure, which is formed in the main roof of the coal seams of the mines of Western Donbas. When using two-pillar single-row fastening, the value of convergence can increase by more than 33%, in comparison with four-pillar two-row mechanized fastening of the support-fencing type. Practical significance. The research results make it possible to determine a rational option for using the type of mechanized fastenings for the complicated hydrotechnical conditions of coal mining from ultra-thin coal seams of the mines of Western Donbas, as well as to develop recommendations for technological improvement of mining operations, to minimize accidents associated with the subsidence of sections of mechanized fastening «on hard base», which significantly increases the efficiency of coal mining.
目的。考虑到煤层主顶板形成静水压力的表现，确定矿井同时淹水和采矿作业条件下使用一种机械化紧固装置的合理方案。研究采用数值模拟的方法，利用Solid Works 2019软件包对层状横向各向同性岩体中煤层底板和顶板的位移进行了分析，并对清理坑的分步进度进行了预测。根据PJSC“DTEK pavlogradugillia”采矿企业收集的实际数据，获得了在顿巴斯西部矿山水文岩土条件下使用机械化紧固的统计参数。通过与Ostroj-70/125型两柱单列固定装置的运行模拟结果对比，论证了在具有静水压力表现的层状岩体条件下，采用KD-80型支撑围栏四柱二列机械化固定装置的合理可行性。科学的新奇。考虑到西部顿巴斯矿区煤层主顶板形成的静水压力的表现，首次在数值比较模型的基础上，对矿井同时淹水和采矿作业条件下单排和双排机械化紧固件的作业进行了岩土工程预测。采用双柱单排紧固时，与支撑围栏式四柱二排机械化紧固相比，收敛值可提高33%以上。现实意义。研究结果可以为在顿巴斯西部矿井超薄煤层中复杂的水力技术条件下使用机械化紧固件类型确定合理的选择，并为采矿作业的技术改进提出建议，以最大限度地减少与“硬基”机械化紧固件部分下沉相关的事故，从而显着提高煤炭开采效率。
{"title":"ANALYSIS OF APPLICATION EFFICIENCY OF SINGLE AND DOUBLE ROW MECHANISED FIXTURES IN THE CONDITIONS OF SYNCHRONIZATION OF MINING WORKS AND FLOODING OF MINES","authors":"S. Vlasov, I. Sadovenko, Yavhen Moldavanov, S. Timchenko","doi":"10.31474/1999-981x-2023-1-7-15","DOIUrl":"https://doi.org/10.31474/1999-981x-2023-1-7-15","url":null,"abstract":"Purpose. Determination of a rational option for using a type of mechanized fastening in the conditions of simultaneous flooding of mines and mining operations, taking into account the manifestations of hydrostatic pressure formed in the main roof of the coal seam.\u0000\u0000Method. The research used the method of numerical modelling and analysis of the displacement of the sole and roof of the coal seam and the prediction of the step-by-step progress of the cleaning pit in the layered transversely isotropic massif of rocks using the Solid Works 2019 software package.\u0000\u0000Results. Obtained statistical parameters of the use of mechanized fastening in the hydrogeotechnical conditions of the mines of Western Donbas based on the collected actual data of the mining enterprises of PJSC «DTEK Pavlogradvugillia». The reasonable feasibility of using a supporting and fencing four-pillar, two-row mechanized fastening of the KD-80 type by comparing the results of modelling its operation with a two-pillar single-row fastening of the Ostroj-70/125 type in conditions of a layered massif with manifestations of hydrostatic pressure.\u0000\u0000Scientific novelty. For the first time, a geotechnical forecast was performed on the basis of numerical comparative modelling of the operation of single- and double-row mechanized fasteners in the conditions of simultaneous flooding of the mine and mining operations, taking into account the manifestations of hydrostatic pressure, which is formed in the main roof of the coal seams of the mines of Western Donbas. When using two-pillar single-row fastening, the value of convergence can increase by more than 33%, in comparison with four-pillar two-row mechanized fastening of the support-fencing type.\u0000\u0000Practical significance. The research results make it possible to determine a rational option for using the type of mechanized fastenings for the complicated hydrotechnical conditions of coal mining from ultra-thin coal seams of the mines of Western Donbas, as well as to develop recommendations for technological improvement of mining operations, to minimize accidents associated with the subsidence of sections of mechanized fastening «on hard base», which significantly increases the efficiency of coal mining.","PeriodicalId":344647,"journal":{"name":"JOURNAL of Donetsk mining institute","volume":"21 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":"115520905","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-2019-1-154-159
І. М. Bubniak, А. М. Bubniak, Y. Shylo, О.М. Shylo, Consulting Geologist
The aim of the work is to demonstrate the usefulness of digital photogrammetry for the purposes of Structural Geology. The studied object clastic dikes in the Oligocene deposits of the Ukrainian Carpathians, which are localized in the village of Stankovtsi of the Dolyna District of Ivano-Frankivsk Region. They are important indicators of the geodynamic conditions in different tectonic conditions. Method. For this object digital photogrammetry was first used for the construction of a three-dimensional outcrop. The workflow for collecting, processing and presenting the 3D model is presented. For the first time digital photogrammetry was used for the construction of a three-dimensional outcrops. To create the model, the Sony Alpha 7 digital camera, the Leica TCR405 electronic station and the South Galaxy G1 GNSS receiver were used. Field scan results were processed using Agisoft Photoscan software. Results. There are described advantages and disadvantages of digital photogrammetric data for the purposes of Structural Geology. The advantages of using digital photogrammetry are the high performance of the surveying and their high precision. The disadvantages include the lack of a sufficient number of specialists working in the field of digital photogrammetry. Practical significance. The created model will be used for visualization of the structural features of the outcrops, subsequent construction with the use of various computer programs. First and foremost, these include Move and CloudCompare, which allow receiving a large amount of information necessary for a structural geologist in an office. Such data include: the thickness of the layers, both plane and linear elements.
{"title":"USE OF DIGITAL PHOTOGRAPHIC METHOD FOR THE CREATION OF VIRTUAL GEOLOGICAL OUTCROPS, CASE STUDIES ON THE CLASTIC DIKES FROM WESTERN UKRAINE","authors":"І. М. Bubniak, А. М. Bubniak, Y. Shylo, О.М. Shylo, Consulting Geologist","doi":"10.31474/1999-981X-2019-1-154-159","DOIUrl":"https://doi.org/10.31474/1999-981X-2019-1-154-159","url":null,"abstract":"The aim of the work is to demonstrate the usefulness of digital photogrammetry for the purposes of Structural Geology. The studied object clastic dikes in the Oligocene deposits of the Ukrainian Carpathians, which are localized in the village of Stankovtsi of the Dolyna District of Ivano-Frankivsk Region. They are important indicators of the geodynamic conditions in different tectonic conditions. Method. For this object digital photogrammetry was first used for the construction of a three-dimensional outcrop. The workflow for collecting, processing and presenting the 3D model is presented. For the first time digital photogrammetry was used for the construction of a three-dimensional outcrops. To create the model, the Sony Alpha 7 digital camera, the Leica TCR405 electronic station and the South Galaxy G1 GNSS receiver were used. Field scan results were processed using Agisoft Photoscan software. Results. There are described advantages and disadvantages of digital photogrammetric data for the purposes of Structural Geology. The advantages of using digital photogrammetry are the high performance of the surveying and their high precision. The disadvantages include the lack of a sufficient number of specialists working in the field of digital photogrammetry. Practical significance. The created model will be used for visualization of the structural features of the outcrops, subsequent construction with the use of various computer programs. First and foremost, these include Move and CloudCompare, which allow receiving a large amount of information necessary for a structural geologist in an office. Such data include: the thickness of the layers, both plane and linear elements.","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":"125805719","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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