Pub Date : 2023-01-15DOI: 10.30686/1609-9192-2022-6-95-102
A. Kozyrev, I. Semenova, S. Zhukova, O. Zhuravleva
Large-scale mining operations over 90 years at the Khibiny apatite-nepheline deposits that are characterized with the conspicuous gravity-tectonic type of the stress-strain state have transformed the initial stress field of the rock massif, which has led to the recurrent occurrence of rockbursts. This problem retains its relevance due to constant increasing intensity of mining operations at the apatite mines during the last two decades and complicated mining, geological and geomechanical conditions. Accordingly, the dynamic rock pressure is increasing. We have retrospectively analyzed data on the manifestations of geodynamic events in the Khibiny rockburst-hazardous deposits and determined a set of factors that influence the changes in seismic behavior and localization of hazardous zones in complicated mining and engineering systems. We have systematized the data of long-term observations on dynamic rock pressure manifestations at the Khibiny apatite mines, taking into account the seismicity parameters, the scale of mine damage, the mining-induced stress fields, and geological and geomechanical features of the rock massif at specific time points. A structural scheme has been developed and ranking of factors has been carried out, considering the time of impact on the rock massif.
{"title":"Factors of seismic behavior change and localization of hazardous zones under a large-scale mining-induced impact","authors":"A. Kozyrev, I. Semenova, S. Zhukova, O. Zhuravleva","doi":"10.30686/1609-9192-2022-6-95-102","DOIUrl":"https://doi.org/10.30686/1609-9192-2022-6-95-102","url":null,"abstract":"Large-scale mining operations over 90 years at the Khibiny apatite-nepheline deposits that are characterized with the conspicuous gravity-tectonic type of the stress-strain state have transformed the initial stress field of the rock massif, which has led to the recurrent occurrence of rockbursts. This problem retains its relevance due to constant increasing intensity of mining operations at the apatite mines during the last two decades and complicated mining, geological and geomechanical conditions. Accordingly, the dynamic rock pressure is increasing. We have retrospectively analyzed data on the manifestations of geodynamic events in the Khibiny rockburst-hazardous deposits and determined a set of factors that influence the changes in seismic behavior and localization of hazardous zones in complicated mining and engineering systems. We have systematized the data of long-term observations on dynamic rock pressure manifestations at the Khibiny apatite mines, taking into account the seismicity parameters, the scale of mine damage, the mining-induced stress fields, and geological and geomechanical features of the rock massif at specific time points. A structural scheme has been developed and ranking of factors has been carried out, considering the time of impact on the rock massif.","PeriodicalId":36119,"journal":{"name":"Gornaya Promyshlennost","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47701820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-15DOI: 10.30686/1609-9192-2022-6-127-130
D. Dabiev, Sh.Ch. Soyan, S. Chupikova
Government of Tuva adopted a resolution "On the Strategy of socio-economic development of the Republic of Tuva until 2030" (hereinafter referred to as the Strategy), which considers two scenarios for the long-term development of the republic: basic and target. When implementing the basic scenario, the established trend of development of the republic remains, in which the basic social guarantees for the population will be preserved, but at the same time the possibility of implementing large investment and infrastructure projects in the economy is excluded. When implementing the target development scenario, a radical change in the current structure of the economy and infrastructure is expected: the planned construction of the railway along the Kuragino-Kyzyl highway will be continued to Erdenet (Mongolia), which will become through, since it will be included in the trans-Mongolian railway. We have made an assessment of the scenarios of socio-economic development of Tuva using the input-output method. The assessment shows that the projected target indicators, both for the basic and target scenario of the development of the Tuva economy, differ somewhat from the indicators specified in the Strategy. We have assessed additional development factors, such as the growth of mineral extraction in connection with the implementation of the railway construction project to Mongolia, as well as taking into account the growth of GVA in transport and energy. Thus, it can be noted that the intersectoral balance is one of the optimal tools for analyzing and forecasting the economy of regions.
{"title":"Assessment of scenarios of socio-economic development of the Siberian border regions with predominantly mineral resource potential using the input-output method (on the example of Tuva)","authors":"D. Dabiev, Sh.Ch. Soyan, S. Chupikova","doi":"10.30686/1609-9192-2022-6-127-130","DOIUrl":"https://doi.org/10.30686/1609-9192-2022-6-127-130","url":null,"abstract":"Government of Tuva adopted a resolution \"On the Strategy of socio-economic development of the Republic of Tuva until 2030\" (hereinafter referred to as the Strategy), which considers two scenarios for the long-term development of the republic: basic and target. When implementing the basic scenario, the established trend of development of the republic remains, in which the basic social guarantees for the population will be preserved, but at the same time the possibility of implementing large investment and infrastructure projects in the economy is excluded. When implementing the target development scenario, a radical change in the current structure of the economy and infrastructure is expected: the planned construction of the railway along the Kuragino-Kyzyl highway will be continued to Erdenet (Mongolia), which will become through, since it will be included in the trans-Mongolian railway. We have made an assessment of the scenarios of socio-economic development of Tuva using the input-output method. The assessment shows that the projected target indicators, both for the basic and target scenario of the development of the Tuva economy, differ somewhat from the indicators specified in the Strategy. We have assessed additional development factors, such as the growth of mineral extraction in connection with the implementation of the railway construction project to Mongolia, as well as taking into account the growth of GVA in transport and energy. Thus, it can be noted that the intersectoral balance is one of the optimal tools for analyzing and forecasting the economy of regions.","PeriodicalId":36119,"journal":{"name":"Gornaya Promyshlennost","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45632318","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 : 2022-11-03DOI: 10.30686/1609-9192-2022-5-83-91
A. A. Davydov, M. A. Sonnov, A.Ye. Rumyantsev, Yu.Yu. Golovchenko, A. V. Trofimov
With regard to mining at depths the issues of ensuring the chambers stability, the choice of their orientation and the support selection still at the design stage are particularly relevant. At depths, near large tectonic disturbances, the factor of natural rock pressure starts to play a defining role in the underground structures stability, and the constant growth of requirements for improving safety of underground structures predetermines the need to incorporate modern approaches to identify the stressstrain state using numerical simulation. Making design decisions without simulation can lead to a decrease in economic performance and production safety, and sometimes entail the impossibility of full recovery of reserves. The finite element simulation used in this work as one of the main methods for determining the optimal option for primary cutting of the ore body and mining a rich ore body located in close proximity to large-scale tectonic disturbance that provokes a complex stress state of the ore body itself. On a practical level, the finite element method can be discredited, and therefore a description of the sequence of techniques for constructing and calibrating finite element models of primary cutting of the ore body (mining options) is required for correct identification of the most suitable mining option, that is done in this work. The integrated approach includes: formation of complex spatial geometric model of ore bodies, taking into account the morphology of bedding; separation of the model into stages of development and forming different variants of development; determination of borderline conditions for Cauchy tensor correct task; determination of deformation model and assignment of physical and mechanical parameters; carrying out verification calculations; calculation of all model variants, their analysis and selection of the most optimal ore deposit mining technique; interpolation of data into geomechanical block model for the possibility of selecting and substantiating the supports parameters and calculating the stability of chambers using analytical tools.
{"title":"Geotechnical justification of primary cutting of the ore body of rich ore deposits of “Glubokaya” mine using methods of stepwise numerical simulation under gravitational-tectonic stress field conditions","authors":"A. A. Davydov, M. A. Sonnov, A.Ye. Rumyantsev, Yu.Yu. Golovchenko, A. V. Trofimov","doi":"10.30686/1609-9192-2022-5-83-91","DOIUrl":"https://doi.org/10.30686/1609-9192-2022-5-83-91","url":null,"abstract":"With regard to mining at depths the issues of ensuring the chambers stability, the choice of their orientation and the support selection still at the design stage are particularly relevant. At depths, near large tectonic disturbances, the factor of natural rock pressure starts to play a defining role in the underground structures stability, and the constant growth of requirements for improving safety of underground structures predetermines the need to incorporate modern approaches to identify the stressstrain state using numerical simulation. Making design decisions without simulation can lead to a decrease in economic performance and production safety, and sometimes entail the impossibility of full recovery of reserves. The finite element simulation used in this work as one of the main methods for determining the optimal option for primary cutting of the ore body and mining a rich ore body located in close proximity to large-scale tectonic disturbance that provokes a complex stress state of the ore body itself. On a practical level, the finite element method can be discredited, and therefore a description of the sequence of techniques for constructing and calibrating finite element models of primary cutting of the ore body (mining options) is required for correct identification of the most suitable mining option, that is done in this work. The integrated approach includes: formation of complex spatial geometric model of ore bodies, taking into account the morphology of bedding; separation of the model into stages of development and forming different variants of development; determination of borderline conditions for Cauchy tensor correct task; determination of deformation model and assignment of physical and mechanical parameters; carrying out verification calculations; calculation of all model variants, their analysis and selection of the most optimal ore deposit mining technique; interpolation of data into geomechanical block model for the possibility of selecting and substantiating the supports parameters and calculating the stability of chambers using analytical tools.","PeriodicalId":36119,"journal":{"name":"Gornaya Promyshlennost","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45263273","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 : 2022-11-03DOI: 10.30686/1609-9192-2022-5-69-73
E. M. Sakharov, R. Berger, M. Rylnikova
The paper reviews the main trends in digitalization of the production processes implemented during the development of the Gremyachinskoe potassium-magnesium salt deposit. The main objective of the digital projects is to maintain competitiveness in the current market conditions. When implementing the integrated digital transformation project, the EuroChem-VolgaKaliy created a clear system of criteria to control the efficiency of the business processes and intriduced instrumental control over the actual duration of the technological cycle. Comparing more complete information on personnel with production metrics data creates objective ratings of face teams and foremen, which makes it possible to reduce production cycle time and increase average daily production volumes by 26%. An important area for further implementation of the project will be upgrading the IT-infrastructure, robotization of the office tasks, e.g. automatic generation of production requests, transfer of messages between the related divisions with no manual entry of information. After the information array is formed, it is planned to introduce the dependency analysis of production indicators with definition of equipment breakdown parameters. This will help to reduce the total number of downtime cases and increase the productivity of the mine as a whole, and will ensure a significant reduction in duration of unscheduled emergency repairs. A promising trend in activities of the Gremyachinskoe mining-and-processing integrated works is application of artificial intelligence in planning of mining operations. In order to solve these tasks it is envisaged to create 3D models, to simulate various methods and technologies of mining salt formations, to determine the design parameters of the mining method with account of the actual morphology and thixotropy of the formations.
{"title":"Integrated digital transformation implemented in development of the Gremyachinskoe potassium-magnesium salt deposit","authors":"E. M. Sakharov, R. Berger, M. Rylnikova","doi":"10.30686/1609-9192-2022-5-69-73","DOIUrl":"https://doi.org/10.30686/1609-9192-2022-5-69-73","url":null,"abstract":"The paper reviews the main trends in digitalization of the production processes implemented during the development of the Gremyachinskoe potassium-magnesium salt deposit. The main objective of the digital projects is to maintain competitiveness in the current market conditions. When implementing the integrated digital transformation project, the EuroChem-VolgaKaliy created a clear system of criteria to control the efficiency of the business processes and intriduced instrumental control over the actual duration of the technological cycle. Comparing more complete information on personnel with production metrics data creates objective ratings of face teams and foremen, which makes it possible to reduce production cycle time and increase average daily production volumes by 26%. An important area for further implementation of the project will be upgrading the IT-infrastructure, robotization of the office tasks, e.g. automatic generation of production requests, transfer of messages between the related divisions with no manual entry of information. After the information array is formed, it is planned to introduce the dependency analysis of production indicators with definition of equipment breakdown parameters. This will help to reduce the total number of downtime cases and increase the productivity of the mine as a whole, and will ensure a significant reduction in duration of unscheduled emergency repairs. A promising trend in activities of the Gremyachinskoe mining-and-processing integrated works is application of artificial intelligence in planning of mining operations. In order to solve these tasks it is envisaged to create 3D models, to simulate various methods and technologies of mining salt formations, to determine the design parameters of the mining method with account of the actual morphology and thixotropy of the formations.","PeriodicalId":36119,"journal":{"name":"Gornaya Promyshlennost","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48158800","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 : 2022-11-03DOI: 10.30686/1609-9192-2022-5-42-46
Ю Н Малышев, Анна Владимировна Титова, Г И Титов
{"title":"Modern software modules in industry education using digital technologies","authors":"Ю Н Малышев, Анна Владимировна Титова, Г И Титов","doi":"10.30686/1609-9192-2022-5-42-46","DOIUrl":"https://doi.org/10.30686/1609-9192-2022-5-42-46","url":null,"abstract":"","PeriodicalId":36119,"journal":{"name":"Gornaya Promyshlennost","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42444574","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 : 2022-11-03DOI: 10.30686/1609-9192-2022-5-52-63
A. M. Lipanov, V. Artemiev, S. A. Petrushin, V. N. Kosterenko, A. Mutygullin, S. I. Kontsevoy, M. A. Lifer, A. Kontsevoy, M.L. Kim
The paper presents a concept of an unmanned self-propelled vehicle for operation in coal mines as a multi-modular multifunctional unmanned self-propelled wheeled vehicles that are designed using a basic module. Design elements are described for a two-wheel module, which is proposed to be the basis for the multifunctional unmanned self-propelled wheeled vehicle. The proposed design is compared with existing unmanned self-propelled wheeled vehicles stating its advantages and disadvantages. Conclusions are made based on the analysis of the proposed concept, that the described design has the potential to serve as the basis for creating multifunctional unmanned self-propelled vehicles for operation in coal mines in the near future
{"title":"A concept of an unmanned self-propelled vehicle for operation in coal mines. Part 1","authors":"A. M. Lipanov, V. Artemiev, S. A. Petrushin, V. N. Kosterenko, A. Mutygullin, S. I. Kontsevoy, M. A. Lifer, A. Kontsevoy, M.L. Kim","doi":"10.30686/1609-9192-2022-5-52-63","DOIUrl":"https://doi.org/10.30686/1609-9192-2022-5-52-63","url":null,"abstract":"The paper presents a concept of an unmanned self-propelled vehicle for operation in coal mines as a multi-modular multifunctional unmanned self-propelled wheeled vehicles that are designed using a basic module. Design elements are described for a two-wheel module, which is proposed to be the basis for the multifunctional unmanned self-propelled wheeled vehicle. The proposed design is compared with existing unmanned self-propelled wheeled vehicles stating its advantages and disadvantages. Conclusions are made based on the analysis of the proposed concept, that the described design has the potential to serve as the basis for creating multifunctional unmanned self-propelled vehicles for operation in coal mines in the near future","PeriodicalId":36119,"journal":{"name":"Gornaya Promyshlennost","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47862074","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 : 2022-11-03DOI: 10.30686/1609-9192-2022-5-64-68
V. V. Zhulikov, K. Knyazev, S. Nazarov
Carrying out large-scale blasting using non-electric primers in surface mining is concerned with a number of deficiencies, one of which being the error in borehole and surface delay times. As a consequence, the design blasting system is compromised, the face blasting rates are affected, and the rock mass fragmentation quality goes down. Due to their advantage in the triggering accuracy, the electronic blasting systems ensure absolute control over the execution of large-scale blasting, reduce the negative impact of blasting operations on residential areas near the surface mine and improve the quality of rock mass fragmentation. Electronic blasting systems enable the development of new ways to execute blasting, for example, though selecting the face blasting rates, which in turn increases the rock mass fragmentation quality and reduces dilution. The paper presents comparative indicators of bias in the nominal delay times of various non-electric primers and electronic blasting systems, discusses the components and designs of electronic detonators, and provides a number of advantages of the electronic systems in conditioning of the the preparation of blasted rock. A conclusion is made that blasting with electronic detonators and the use of their advantages will help to reduce the specific consumption of explosives and the scope of drilling operations due to larger blasthole patterns.
{"title":"Justification of blasting efficiency using electronic systems in comparison with non-electric primers","authors":"V. V. Zhulikov, K. Knyazev, S. Nazarov","doi":"10.30686/1609-9192-2022-5-64-68","DOIUrl":"https://doi.org/10.30686/1609-9192-2022-5-64-68","url":null,"abstract":"Carrying out large-scale blasting using non-electric primers in surface mining is concerned with a number of deficiencies, one of which being the error in borehole and surface delay times. As a consequence, the design blasting system is compromised, the face blasting rates are affected, and the rock mass fragmentation quality goes down. Due to their advantage in the triggering accuracy, the electronic blasting systems ensure absolute control over the execution of large-scale blasting, reduce the negative impact of blasting operations on residential areas near the surface mine and improve the quality of rock mass fragmentation. Electronic blasting systems enable the development of new ways to execute blasting, for example, though selecting the face blasting rates, which in turn increases the rock mass fragmentation quality and reduces dilution. The paper presents comparative indicators of bias in the nominal delay times of various non-electric primers and electronic blasting systems, discusses the components and designs of electronic detonators, and provides a number of advantages of the electronic systems in conditioning of the the preparation of blasted rock. A conclusion is made that blasting with electronic detonators and the use of their advantages will help to reduce the specific consumption of explosives and the scope of drilling operations due to larger blasthole patterns.","PeriodicalId":36119,"journal":{"name":"Gornaya Promyshlennost","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43024379","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 : 2022-11-03DOI: 10.30686/1609-9192-2022-5-92-98
A. Voronov, A. Khoreshok, Y. Voronov, D. M. Dubinkin
owerful shovel-truck systems (STSs) are widely used to perform overburden operations in open-pit mines. One of the main STS problems is the low level of its operation quality. The desire to increase the unit capacity of mining trucks and shovels, which is characteristic of the current stage of open-pit STS development, is not accompanied, however, by a corresponding increase in its productivity and utilization rates. This only leads to a quantitative growth of shovel and truck fleets without a significant improvement in the quality of their work. This is mainly due to insufficient consideration of the impact of the joint operation of shovels and trucks on the STS efficiency. The traditional approach to improving open-pit STSs by increasing the unit capacity of machines, as well as empiricism in the STS design, will not give serious qualitative changes in the future. In this regard, the purpose of the study is to substantiate and determine the optimal parameters of the STS at open-pit coal mines using the example of the Kuzbassrazrezugol Coal Company. The study used scientific generalization, methods of integral quality assessment, optimization modeling and linear programming, methods of statistical data processing, analysis and synthesis. As a result, a new approach has been developed to optimize the STS parameters and to form the optimal fleets of loading and transport equipment, as well as a mechanism for objective evaluation of decisions made during the designing and improving the STS, and a set of methods for its implementation. The developed optimization apparatus makes it possible to expand the functional and operational capabilities not only of the STS, but also of complexes for other technological purposes.
{"title":"Optimization of parameters of shovel-truck systems at open-pit coal mines","authors":"A. Voronov, A. Khoreshok, Y. Voronov, D. M. Dubinkin","doi":"10.30686/1609-9192-2022-5-92-98","DOIUrl":"https://doi.org/10.30686/1609-9192-2022-5-92-98","url":null,"abstract":"owerful shovel-truck systems (STSs) are widely used to perform overburden operations in open-pit mines. One of the main STS problems is the low level of its operation quality. The desire to increase the unit capacity of mining trucks and shovels, which is characteristic of the current stage of open-pit STS development, is not accompanied, however, by a corresponding increase in its productivity and utilization rates. This only leads to a quantitative growth of shovel and truck fleets without a significant improvement in the quality of their work. This is mainly due to insufficient consideration of the impact of the joint operation of shovels and trucks on the STS efficiency. The traditional approach to improving open-pit STSs by increasing the unit capacity of machines, as well as empiricism in the STS design, will not give serious qualitative changes in the future. In this regard, the purpose of the study is to substantiate and determine the optimal parameters of the STS at open-pit coal mines using the example of the Kuzbassrazrezugol Coal Company. The study used scientific generalization, methods of integral quality assessment, optimization modeling and linear programming, methods of statistical data processing, analysis and synthesis. As a result, a new approach has been developed to optimize the STS parameters and to form the optimal fleets of loading and transport equipment, as well as a mechanism for objective evaluation of decisions made during the designing and improving the STS, and a set of methods for its implementation. The developed optimization apparatus makes it possible to expand the functional and operational capabilities not only of the STS, but also of complexes for other technological purposes.","PeriodicalId":36119,"journal":{"name":"Gornaya Promyshlennost","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44196398","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 : 2022-11-03DOI: 10.30686/1609-9192-2022-5-112-120
O. Litvin, A. Khoreshok, D. M. Dubinkin, S. Markov, D. Stenin, M. Tyulenev
The productivity of mechanical and hydraulic excavators is the main indicator characterizing the efficiency of their operation and a tool for planning all kinds of works, in which excavators are involved. There is a considerable quantity of techniques to calculate the productivity of mining machines; despite their general similarity and subordination to the same trend, there are many discrepancies which prevent the use of one or another technique as a universal one or creation of such on its basis. Basically, these discrepancies concern the correction coefficients, characterizing the excavator operating modes. When calculating the technical, and even more, the passport capacity, the methods of their calculation are more or less the same, and certain generalizations can be made about the genesis of a particular factor, but the operational performance is a completely different matter. In this paper, the authors analyze the methods of calculating the capacity of excavators according to the manuals of some foreign manufacturers, as well as reference books on mining. Some discrepancies both in the methods themselves and in the mining terminology are established; priority measures for the elimination of the identified shortcomings are proposed.The current situation in the field of software shows the other side of globalization, which, in fact, has led to monopolization of the Russian market by the Western software companies. The solution to this problem is the transition to domestic software. And this is not only the task of the state, but also that of enterprises interested in the stable functioning of their industries and the growth of qualifications of their employees, because domestic developers rely primarily on the knowledge and experience of Russian specialists, involving them in the innovation process.
{"title":"Analysis of methods for calculating the productivity of open-pit hydraulic shovels and backhoes","authors":"O. Litvin, A. Khoreshok, D. M. Dubinkin, S. Markov, D. Stenin, M. Tyulenev","doi":"10.30686/1609-9192-2022-5-112-120","DOIUrl":"https://doi.org/10.30686/1609-9192-2022-5-112-120","url":null,"abstract":"The productivity of mechanical and hydraulic excavators is the main indicator characterizing the efficiency of their operation and a tool for planning all kinds of works, in which excavators are involved. There is a considerable quantity of techniques to calculate the productivity of mining machines; despite their general similarity and subordination to the same trend, there are many discrepancies which prevent the use of one or another technique as a universal one or creation of such on its basis. Basically, these discrepancies concern the correction coefficients, characterizing the excavator operating modes. When calculating the technical, and even more, the passport capacity, the methods of their calculation are more or less the same, and certain generalizations can be made about the genesis of a particular factor, but the operational performance is a completely different matter. In this paper, the authors analyze the methods of calculating the capacity of excavators according to the manuals of some foreign manufacturers, as well as reference books on mining. Some discrepancies both in the methods themselves and in the mining terminology are established; priority measures for the elimination of the identified shortcomings are proposed.The current situation in the field of software shows the other side of globalization, which, in fact, has led to monopolization of the Russian market by the Western software companies. The solution to this problem is the transition to domestic software. And this is not only the task of the state, but also that of enterprises interested in the stable functioning of their industries and the growth of qualifications of their employees, because domestic developers rely primarily on the knowledge and experience of Russian specialists, involving them in the innovation process.","PeriodicalId":36119,"journal":{"name":"Gornaya Promyshlennost","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44366859","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 : 2022-11-03DOI: 10.30686/1609-9192-2022-5-79-82
R. Krinitsyn
With regard to mining at depths the issues of ensuring the chambers stability, the choice of their orientation and the support selection still at the design stage are particularly relevant. At depths, near large tectonic disturbances, the factor of natural rock pressure starts to play a defining role in the underground structures stability, and the constant growth of requirements for improving safety of underground structures predetermines the need to incorporate modern approaches to identify the stressstrain state using numerical simulation. Making design decisions without simulation can lead to a decrease in economic performance and production safety, and sometimes entail the impossibility of full recovery of reserves. The finite element simulation used in this work as one of the main methods for determining the optimal option for primary cutting of the ore body and mining a rich ore body located in close proximity to large-scale tectonic disturbance that provokes a complex stress state of the ore body itself. On a practical level, the finite element method can be discredited, and therefore a description of the sequence of techniques for constructing and calibrating finite element models of primary cutting of the ore body (mining options) is required for correct identification of the most suitable mining option, that is done in this work. The integrated approach includes: formation of complex spatial geometric model of ore bodies, taking into account the morphology of bedding; separation of the model into stages of development and forming different variants of development; determination of borderline conditions for Cauchy tensor correct task; determination of deformation model and assignment of physical and mechanical parameters; carrying out verification calculations; calculation of all model variants, their analysis and selection of the most optimal ore deposit mining technique; interpolation of data into geomechanical block model for the possibility of selecting and substantiating the supports parameters and calculating the stability of chambers using analytical tools.
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