Pub Date : 2023-08-25DOI: 10.30686/1609-9192-2023-4-65-70
S.P. Moser, S.A. Kozyrev, E.A. Vlasova
Emulsion explosives are widely used in the mining industry, and their use, in combination with modern means of initiation, has improved the safety of mining operations and significantly increased labor productivity. The main component of emulsion explosives is ammonium nitrate, which is part of the emulsion matrix. Grade A is produced for the industrial purposes, while Grade B is used in agriculture. Due to difficulties in logistics, mining enterprises that produce emulsion matrix often use Grade B ammonium nitrate. The main disadvantage of ammonium nitrate is its high water absorption capacity. Caked ammonium nitrate loses its properties, becomes unusable and cannot be utilized in preparation of the emulsion matrix. In order to slow down the caking process, special additives are introduced into the composition of Grade B ammonium nitrate. The paper presents the research data on the material composition of ammonium nitrate of Grades A and B as well as its influence on the physical properties of the obtained emulsion matrix. To identify differences in the physical properties of the emulsion matrix obtained from ammonium nitrate of Grades A and B, studies of the dynamic viscosity and electric capacitance of emulsions were carried out, and the detonation velocities of emulsion explosives charges were measured. It has been established that Grade B ammonium nitrate contains sulfates, exceeding the threshold values of which can lead to partial or complete stop of detonation of the emulsion explosive; dynamic viscosity and electrical capacitance of the emulsion matrices with Grade B ammonium nitrate are characterized by low rates; the detonation rate of the charge prepared using Grade B ammonium nitrate is 7–10% lower than the detonation rate of the charge based on Grade A ammonium nitrate.
{"title":"The effect of the quality of ammonium nitrate on the properties of emulsion explosives","authors":"S.P. Moser, S.A. Kozyrev, E.A. Vlasova","doi":"10.30686/1609-9192-2023-4-65-70","DOIUrl":"https://doi.org/10.30686/1609-9192-2023-4-65-70","url":null,"abstract":"Emulsion explosives are widely used in the mining industry, and their use, in combination with modern means of initiation, has improved the safety of mining operations and significantly increased labor productivity. The main component of emulsion explosives is ammonium nitrate, which is part of the emulsion matrix. Grade A is produced for the industrial purposes, while Grade B is used in agriculture. Due to difficulties in logistics, mining enterprises that produce emulsion matrix often use Grade B ammonium nitrate. The main disadvantage of ammonium nitrate is its high water absorption capacity. Caked ammonium nitrate loses its properties, becomes unusable and cannot be utilized in preparation of the emulsion matrix. In order to slow down the caking process, special additives are introduced into the composition of Grade B ammonium nitrate. The paper presents the research data on the material composition of ammonium nitrate of Grades A and B as well as its influence on the physical properties of the obtained emulsion matrix. To identify differences in the physical properties of the emulsion matrix obtained from ammonium nitrate of Grades A and B, studies of the dynamic viscosity and electric capacitance of emulsions were carried out, and the detonation velocities of emulsion explosives charges were measured. It has been established that Grade B ammonium nitrate contains sulfates, exceeding the threshold values of which can lead to partial or complete stop of detonation of the emulsion explosive; dynamic viscosity and electrical capacitance of the emulsion matrices with Grade B ammonium nitrate are characterized by low rates; the detonation rate of the charge prepared using Grade B ammonium nitrate is 7–10% lower than the detonation rate of the charge based on Grade A ammonium nitrate.","PeriodicalId":36119,"journal":{"name":"Gornaya Promyshlennost","volume":"27 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134981870","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 : 2023-08-25DOI: 10.30686/1609-9192-2023-4-97-100
V.O. Oorzhak
Searching for ways to develop the territories along the eastern border of Russia, including mountainous areas, their manufacturing sectors, among them those in the forestry complex, becomes extremely relevant in current conditions due to the sanctions imposed by the Western countries. In keeping with the goals of this paper and based on studying the stages in the development of economic sectors, analysis and synthesis of data from official statistical sources and authorities as well as modeling of future processes in the mining region, it has been established that in such border mountainous regions of the country as the Republic of Tyva do not fully utilize the existing potential and opportunities for the development of manufacturing, exportoriented industries, especially in the timber industry. In particular, it is shown that in this region, half of the territory of which is covered with forests, there exists a significant potential to increase the volume of harvesting, treatment and deep processing of forest resources (including the volumes of timber up to 1500 thousand m³ per year) and the production of high-quality goods, including the export-oriented ones, provided that environmental protection measures are taken and the level of environmental risks is reduced. The formation of the necessary favorable legislative and legal conditions is proposed for the development of the forest industry in a depressive mountainous region.
{"title":"Forest industry of the mountainous region: assessment of territorial organization and risks for development (Tuva Republic case study)","authors":"V.O. Oorzhak","doi":"10.30686/1609-9192-2023-4-97-100","DOIUrl":"https://doi.org/10.30686/1609-9192-2023-4-97-100","url":null,"abstract":"Searching for ways to develop the territories along the eastern border of Russia, including mountainous areas, their manufacturing sectors, among them those in the forestry complex, becomes extremely relevant in current conditions due to the sanctions imposed by the Western countries. In keeping with the goals of this paper and based on studying the stages in the development of economic sectors, analysis and synthesis of data from official statistical sources and authorities as well as modeling of future processes in the mining region, it has been established that in such border mountainous regions of the country as the Republic of Tyva do not fully utilize the existing potential and opportunities for the development of manufacturing, exportoriented industries, especially in the timber industry. In particular, it is shown that in this region, half of the territory of which is covered with forests, there exists a significant potential to increase the volume of harvesting, treatment and deep processing of forest resources (including the volumes of timber up to 1500 thousand m³ per year) and the production of high-quality goods, including the export-oriented ones, provided that environmental protection measures are taken and the level of environmental risks is reduced. The formation of the necessary favorable legislative and legal conditions is proposed for the development of the forest industry in a depressive mountainous region.","PeriodicalId":36119,"journal":{"name":"Gornaya Promyshlennost","volume":"400 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134981865","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 : 2023-08-25DOI: 10.30686/1609-9192-2023-4-54-58
K.N. Marenich, А.I. Denisova
The relevance of enhancing the protection of mine personnel from electric shocks is associated with a high probability of human contact with a live phase conductor during the operation of power electrical equipment in presence of complex electrical equipment being part of the mine site. The authors have identified the following factors that limit the efficiency of the earth leakage protection means in relation to the their possible operation as part of the mine electric network used to supply power to high-capacity equipment: 1 – capacitance currents in the shunt conductances and leakage circuit are not fully compensated by autocompensators based on the correction of the compensating choke inductance; 2 – implementation of the method to detect the phase with the earth leakage by comparing the phase-to-ground voltages has a limitation for the insulation capacitances exceeding 0.9 μF/phase and the leakage resistance (human body) exceeding 1.0 kOhms; 3 – stability of the earth leakage protection devices to switching transient processes in the power line is not ensured when switching connections with high insulation capacitance in conditions of low (but still within the permissible level) active insulation resistance of the power line; 4 – functionality of the earth leakage protection is limited to cutting the energy flow of the transformer substation of the mine site off the power line and does not cover the suppression of inverse electromotive forces of the induction motors of consumers switching to the run-out mode, which represent an electrical shock hazard.
{"title":"Analysis of factors limiting the efficiency of human protection against electric shocks in the power supply network of the mine site","authors":"K.N. Marenich, А.I. Denisova","doi":"10.30686/1609-9192-2023-4-54-58","DOIUrl":"https://doi.org/10.30686/1609-9192-2023-4-54-58","url":null,"abstract":"The relevance of enhancing the protection of mine personnel from electric shocks is associated with a high probability of human contact with a live phase conductor during the operation of power electrical equipment in presence of complex electrical equipment being part of the mine site. The authors have identified the following factors that limit the efficiency of the earth leakage protection means in relation to the their possible operation as part of the mine electric network used to supply power to high-capacity equipment: 1 – capacitance currents in the shunt conductances and leakage circuit are not fully compensated by autocompensators based on the correction of the compensating choke inductance; 2 – implementation of the method to detect the phase with the earth leakage by comparing the phase-to-ground voltages has a limitation for the insulation capacitances exceeding 0.9 μF/phase and the leakage resistance (human body) exceeding 1.0 kOhms; 3 – stability of the earth leakage protection devices to switching transient processes in the power line is not ensured when switching connections with high insulation capacitance in conditions of low (but still within the permissible level) active insulation resistance of the power line; 4 – functionality of the earth leakage protection is limited to cutting the energy flow of the transformer substation of the mine site off the power line and does not cover the suppression of inverse electromotive forces of the induction motors of consumers switching to the run-out mode, which represent an electrical shock hazard.","PeriodicalId":36119,"journal":{"name":"Gornaya Promyshlennost","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134981869","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 : 2023-08-25DOI: 10.30686/1609-9192-2023-4-33-34
O.I. Brazhnik
The article analyzes the results of pilot tests of the GP-200/11x500-m pump in conditions of evacuating large-scale mineralized water inflows from the Udachny Underground Mine named after Fyodor Andreev. It provides information on the operating time of the pump components obtained by empirical method during the controlled operation over 5500 service hours. The data on economic efficiency of the GP-200/11x500-m pump utilization are updated and specific financial indicators are compared with the previously used equipment.
{"title":"Controlled operation of GP-200/11x500-m pump","authors":"O.I. Brazhnik","doi":"10.30686/1609-9192-2023-4-33-34","DOIUrl":"https://doi.org/10.30686/1609-9192-2023-4-33-34","url":null,"abstract":"The article analyzes the results of pilot tests of the GP-200/11x500-m pump in conditions of evacuating large-scale mineralized water inflows from the Udachny Underground Mine named after Fyodor Andreev. It provides information on the operating time of the pump components obtained by empirical method during the controlled operation over 5500 service hours. The data on economic efficiency of the GP-200/11x500-m pump utilization are updated and specific financial indicators are compared with the previously used equipment.","PeriodicalId":36119,"journal":{"name":"Gornaya Promyshlennost","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134981867","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 : 2023-08-25DOI: 10.30686/1609-9192-2023-4-22-26
I.I. Aynbinder, A.N. Chistyakov, N.E. Zenova
The paper discusses a new key trend used to assess the state of industrial safety at mining operations as well as the cooperation efficiency. The experience GEOEXPERT LLC has gained in carrying out independent technical auditing and the relevance of this line of activity has been demonstrated. Taking into account current challenges and the experience of technical auditing, as well as the prospects for the development of this activity, the article and the data presented in it will help the top management to make their decisions, while the description of real auditing cases will provide the mining companies with an insight into the use of this new method of co-operation. Independent technical auditing is one of the tools to control the state of industrial safety at a mining operation, which provides a general picture of the company, classification of hazardous production facilities according to their hazard characteristics, independent verification of compliance of the production process organization and the production patterns with the regulatory requirements in order to improve the safety of operation, enhance the quality of products and reduce production risks. Three decades of experience gained by GEOEXPERT LLC and studying various aspects of challenges in the mining industry help to identify the method of independent technical auditing as one of the main tools for solving industrial safety problems and preventing emergencies at the operations.
{"title":"Independent auditing as a new trend in industrial safety assessment at hazardous production facilities of the mining industry","authors":"I.I. Aynbinder, A.N. Chistyakov, N.E. Zenova","doi":"10.30686/1609-9192-2023-4-22-26","DOIUrl":"https://doi.org/10.30686/1609-9192-2023-4-22-26","url":null,"abstract":"The paper discusses a new key trend used to assess the state of industrial safety at mining operations as well as the cooperation efficiency. The experience GEOEXPERT LLC has gained in carrying out independent technical auditing and the relevance of this line of activity has been demonstrated. Taking into account current challenges and the experience of technical auditing, as well as the prospects for the development of this activity, the article and the data presented in it will help the top management to make their decisions, while the description of real auditing cases will provide the mining companies with an insight into the use of this new method of co-operation. Independent technical auditing is one of the tools to control the state of industrial safety at a mining operation, which provides a general picture of the company, classification of hazardous production facilities according to their hazard characteristics, independent verification of compliance of the production process organization and the production patterns with the regulatory requirements in order to improve the safety of operation, enhance the quality of products and reduce production risks. Three decades of experience gained by GEOEXPERT LLC and studying various aspects of challenges in the mining industry help to identify the method of independent technical auditing as one of the main tools for solving industrial safety problems and preventing emergencies at the operations.","PeriodicalId":36119,"journal":{"name":"Gornaya Promyshlennost","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134982146","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 : 2023-08-25DOI: 10.30686/1609-9192-2023-4-102-108
N.A. Ivanov, A.E. Sarychev, I.A. Stoyanova
Transformation of the world economy towards the low-carbon development (energy transition) raises the question of the role of coal as an energy carrier and a source of industrial raw materials. On the one hand, it is a widespread energy carrier with reserves that can meet consumption for hundreds of years and well-developed technologies and logistics for its use. On the other hand, it is the most carbon-intensive energy carrier, contributing the largest amount of greenhouse gas emissions, i.e. the choice is made between the economic viability of its use and the environmental threat associated with coal consumption. The authors analyze the scenarios for reducing global greenhouse gas emissions by the International Energy Agency and BloombergNEF, which basically focus on a radical reduction in the use of coal for power generation. However, the International Energy Agency's (IEA) vision of reducing CO2 emissions by eliminating the use of coal in power generation and replacing it with renewable energy sources raises reasonable doubts due to a number of problems that are currently unlikely to be resolved. The development of Carbon Capture Utilisation and Storage technologies will contribute to solving the challenges of coal use in power generation, keeping the coal mining industry developing and achieving the energy transition goals.
{"title":"Role of coal in global energy transition","authors":"N.A. Ivanov, A.E. Sarychev, I.A. Stoyanova","doi":"10.30686/1609-9192-2023-4-102-108","DOIUrl":"https://doi.org/10.30686/1609-9192-2023-4-102-108","url":null,"abstract":"Transformation of the world economy towards the low-carbon development (energy transition) raises the question of the role of coal as an energy carrier and a source of industrial raw materials. On the one hand, it is a widespread energy carrier with reserves that can meet consumption for hundreds of years and well-developed technologies and logistics for its use. On the other hand, it is the most carbon-intensive energy carrier, contributing the largest amount of greenhouse gas emissions, i.e. the choice is made between the economic viability of its use and the environmental threat associated with coal consumption. The authors analyze the scenarios for reducing global greenhouse gas emissions by the International Energy Agency and BloombergNEF, which basically focus on a radical reduction in the use of coal for power generation. However, the International Energy Agency's (IEA) vision of reducing CO2 emissions by eliminating the use of coal in power generation and replacing it with renewable energy sources raises reasonable doubts due to a number of problems that are currently unlikely to be resolved. The development of Carbon Capture Utilisation and Storage technologies will contribute to solving the challenges of coal use in power generation, keeping the coal mining industry developing and achieving the energy transition goals.","PeriodicalId":36119,"journal":{"name":"Gornaya Promyshlennost","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134982323","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 : 2023-08-25DOI: 10.30686/1609-9192-2023-4-61-64
M.P. Kulikova, G.F. Balakina
Relevance. Since coal is one of the main minerals in demand in the Tyva Republic, the focus of the expert and scientific community is on the problems of its further involvement in the economic turnover, increasing the degree of enrichment, and creating a complex of processing enterprises, including coke-chemical ones. Object problems. The Identification of factors that promote and hinder the development of coal mining in the Republic of Tyva, determine the prospects for the development of the industry, design possible scenarios for the implementation of the coal mining development project in the future until 2035. Research results. Modern trends in the development of coal mining and the problems of coal generation are systematized and an analysis of the dynamics of coal mining in the Republic of Tyva is carried out. Conclusions. The factors hindering the development of coal mining (relative transport accessibility, low investment attractiveness, insufficient innovative activity of mining enterprises, poor development of manufacturing industries) and contributing to it (the demand for coal in the Russian and world markets, its significant competitiveness, determining ways to improve the logistics of exporting coal to perspective). Scenarios for increasing coal production in the region are substantiated: basic, innovative and intensive, and their main characteristics.
{"title":"The Coke of Tyva Project: challenges and prospects for the development of coal mining in the Republic of Tyva","authors":"M.P. Kulikova, G.F. Balakina","doi":"10.30686/1609-9192-2023-4-61-64","DOIUrl":"https://doi.org/10.30686/1609-9192-2023-4-61-64","url":null,"abstract":"Relevance. Since coal is one of the main minerals in demand in the Tyva Republic, the focus of the expert and scientific community is on the problems of its further involvement in the economic turnover, increasing the degree of enrichment, and creating a complex of processing enterprises, including coke-chemical ones. Object problems. The Identification of factors that promote and hinder the development of coal mining in the Republic of Tyva, determine the prospects for the development of the industry, design possible scenarios for the implementation of the coal mining development project in the future until 2035. Research results. Modern trends in the development of coal mining and the problems of coal generation are systematized and an analysis of the dynamics of coal mining in the Republic of Tyva is carried out. Conclusions. The factors hindering the development of coal mining (relative transport accessibility, low investment attractiveness, insufficient innovative activity of mining enterprises, poor development of manufacturing industries) and contributing to it (the demand for coal in the Russian and world markets, its significant competitiveness, determining ways to improve the logistics of exporting coal to perspective). Scenarios for increasing coal production in the region are substantiated: basic, innovative and intensive, and their main characteristics.","PeriodicalId":36119,"journal":{"name":"Gornaya Promyshlennost","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134982320","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}
The study is aimed at assessing the changes in seismic energy flow as mining operations advance to deep levels as exemplified by the Apatite Circus apatite-nepheline deposit (Khibiny Massif), which underground reserves are difficult to develop due to the presence of the nearby Rasvumchorr Plateau deposit, which is mined using the open-pit method. Underground mine workings and open-pit walls are located in the bordering area. A large number of fractures and tectonic faults are exposed in this area, which become waterlogged when the snow thaws. As a result, the stress-and-strain state of certain rock mass sections (mainly the tectonic fault zones) changes, which generally affects the seismic settings of the deposits. Along with transition of the mining operations to greater depth, an increase is observed in the number of seismic events and their energy in the lower levels of the mine. Also the fracturing processes in the overhand part of the rock mass are reflected in seismicity activation. The paper presents maps showing the spatial distribution of the seismic energy flows of various events across the mine field as mining progresses to greater depth. It has been established that there exist areas of increased level of seismic energy flow distribution, corresponding to the compressive strain zones (two lower levels, where intensive mining is in progress) and tensile strain zones in the overhand part of the rock mass ( the top third layer), where a gradual collapse of the near-surface area of the mass occurs.
{"title":"Changes in the seismic energy flow when mining deep levels (the Apatite Circus deposit, Khibiny Massif)","authors":"S.A. Zhukova, O.G. Zhuravleva, V.S. Onuprienko, A.A. Streshnev","doi":"10.30686/1609-9192-2023-4-110-116","DOIUrl":"https://doi.org/10.30686/1609-9192-2023-4-110-116","url":null,"abstract":"The study is aimed at assessing the changes in seismic energy flow as mining operations advance to deep levels as exemplified by the Apatite Circus apatite-nepheline deposit (Khibiny Massif), which underground reserves are difficult to develop due to the presence of the nearby Rasvumchorr Plateau deposit, which is mined using the open-pit method. Underground mine workings and open-pit walls are located in the bordering area. A large number of fractures and tectonic faults are exposed in this area, which become waterlogged when the snow thaws. As a result, the stress-and-strain state of certain rock mass sections (mainly the tectonic fault zones) changes, which generally affects the seismic settings of the deposits. Along with transition of the mining operations to greater depth, an increase is observed in the number of seismic events and their energy in the lower levels of the mine. Also the fracturing processes in the overhand part of the rock mass are reflected in seismicity activation. The paper presents maps showing the spatial distribution of the seismic energy flows of various events across the mine field as mining progresses to greater depth. It has been established that there exist areas of increased level of seismic energy flow distribution, corresponding to the compressive strain zones (two lower levels, where intensive mining is in progress) and tensile strain zones in the overhand part of the rock mass ( the top third layer), where a gradual collapse of the near-surface area of the mass occurs.","PeriodicalId":36119,"journal":{"name":"Gornaya Promyshlennost","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134981866","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 : 2023-08-25DOI: 10.30686/1609-9192-2023-4-73-78
A.V. Dremin, V.S. Velikanov
Decreasing ore grades combined with increasing pit depths call for the development of solutions to ensure efficient interaction within the mine-to-mill concept, which should be adapted to each specific mining operation and will optimize the production costs. The aim of the study was to develop a methodological approach to assess the particle size distribution of material within the mine-to-mill process. The study applied a comprehensive approach, which includes scientific analysis and generalization of previously published research results. From the methodological point of view, the study was based on the system analysis methods, as well as on the use of information technologies. A conclusion is made that a mathematical apparatus needs to be created and implemented, which would allow formalizing the nature of statistical data on the particle size distribution. The solution of this problem is extremely important to obtain a time series describing the dynamics of the process over time, since most of the data have a different format of representation. The authors believe that a promising approach is to use predictive analytics, i.e. a tool for analyzing statistically significant and objective data, which helps to make accurate forecasts for decisionmaking.
{"title":"Regarding the particle-size composition of blasted rocks","authors":"A.V. Dremin, V.S. Velikanov","doi":"10.30686/1609-9192-2023-4-73-78","DOIUrl":"https://doi.org/10.30686/1609-9192-2023-4-73-78","url":null,"abstract":"Decreasing ore grades combined with increasing pit depths call for the development of solutions to ensure efficient interaction within the mine-to-mill concept, which should be adapted to each specific mining operation and will optimize the production costs. The aim of the study was to develop a methodological approach to assess the particle size distribution of material within the mine-to-mill process. The study applied a comprehensive approach, which includes scientific analysis and generalization of previously published research results. From the methodological point of view, the study was based on the system analysis methods, as well as on the use of information technologies. A conclusion is made that a mathematical apparatus needs to be created and implemented, which would allow formalizing the nature of statistical data on the particle size distribution. The solution of this problem is extremely important to obtain a time series describing the dynamics of the process over time, since most of the data have a different format of representation. The authors believe that a promising approach is to use predictive analytics, i.e. a tool for analyzing statistically significant and objective data, which helps to make accurate forecasts for decisionmaking.","PeriodicalId":36119,"journal":{"name":"Gornaya Promyshlennost","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134981877","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 : 2023-08-25DOI: 10.30686/1609-9192-2023-4-79-88
Yu.Yu. Golovchenko, I.S. Lepekhin, A.E. Rumyantsev, M.A. Sonnov, A.V. Trofimov
As mining conditions are getting more complex, numerical modelling is becoming one of the most promising areas to obtain data for developing efficient technological solutions. However, creation of high-quality numerical models is an extremely labour-intensive and knowledge consumptive task. Optimization of the numerical modelling process is currently highly demanded. The use of global numerical models with a high level of detail not only makes it possible to evaluate the stress-and-strain state of the rock mass over a large area, but also to qualitatively assess some local effects. Such models help to select more correctly the most hazardous areas for designing local calculation models. Thanks to the high level of detail of the simulated underground structure, the global numerical model can act as a "donor" of the initial geometry for local calculation models, and the exported stress tensor can be used as the boundary conditions, which will increase the accuracy of the local numerical simulation. This approach to numerical modelling can significantly improve the quality of numerical simulations. Although the detailed global numerical models can represent some local phenomena of the rock mass response, they should not be taken as a cure-all solution. The results obtained in a global numerical model are rather aggregated and in case of local tasks only indicate the presence of this or that phenomenon in a particular zone, but cannot describe it quantitatively. Therefore, the transition from global to local numerical models is a necessary part of the work. This paper provides an example of a complete cycle of creating a set of detailed global and local numerical models. The cycle includes all stages of development from optimization of the initial geometry to the step-by-step calculation and analysis of the obtained results. Thanks to the approach used, both qualitative and quantitative convergence was achieved with the results of in-situ observations.
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