SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”最新文献

{"title":"ASSESSMENT OF THE TECHNICALLY ACHIEVABLE LEVEL OF DUSTINESS IN THE AIR DURING EXCAVATION WORK IN COAL MINES","authors":"S. Mineev, O. Usov","doi":"10.31474/2073-9575-2021-1(25)-2(26)-37-43","DOIUrl":"https://doi.org/10.31474/2073-9575-2021-1(25)-2(26)-37-43","url":null,"abstract":"Purpose. Development of a criterion for compliance with the normative indicator – technically achievable level of dust (TAL) – a safe dose of dust particles that have entered the lungs of the employee for the entire period of retirement. Method. The research was conducted on the basis of standard algebraic analysis of the requirements of regulatory documents. Results. A criterion was obtained for the assessment by the coordinating organizations of the correctness of the mine’s determination of the technically achievable level of dustiness of the TAL. It is not related to the assessment of the perfection of dust control technology, but to the medical requirements for the prevention of employee pneumoconiosis during the entire retirement age of his work in a dusty atmosphere (20 years). The criterion is based on the amount of dust load on the respiratory organs of the underground worker during the shift, month, year and the entire period of his work, regulated by current regulations. Scientific novelty. It consists in the mathematical formalization of an intuitive connection between TAL – the maximum level of dustiness of underground workings during excavation machines, medium-variable dust, which takes into account interruptions in the work of excavation machines, and dust load on the respiratory organs of the worker. Practical meaning. The developed criterion allows to carry out the coordinated policy of the management and trade unions of the coal enterprises, supervisory and coordinating instances in questions of reasonable sufficiency of the planned antidust measures, both at a stage of drawing up of the design documentation, and at coordination of acts of TAL. Key words: dustiness, dust load, respiratory organs, dust excretion, dust suppression.","PeriodicalId":430946,"journal":{"name":"SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”","volume":"11 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":"126480859","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}

{"title":"PECULIARITIES OF MODERN GAS MIGRATION IN THE COAL COAL-ROCK MASSIFS OF THE DONETS BASIN","authors":"N. Vergelska, I. Skopychenko","doi":"10.31474/2073-9575-2021-1(25)-2(26)-94-103","DOIUrl":"https://doi.org/10.31474/2073-9575-2021-1(25)-2(26)-94-103","url":null,"abstract":"Purpose. Investigate the change in indicators of qualitative and quantitative gas composition in coal massifs,when the state of the coal rock massif changes, including in gas-dynamic situations. Methodology. The paper uses traditional structural-geological methods, generalization methods and developed and patented by the authors of the method for determining the gas state of coal massifs on the basis of gas chromatography. Results. The change of the residual gas component in coal massifs is investigated.The stages of change of qualitative and quantitative gas composition in coal massifs at gas – dynamic phenomena are established.The ways of gas migration in coal massifs and technogenic reservoirs are determined.The concept of rate gas saturation of a coal massif, which is controlled by the action of discontinuous tectonics, is introduced. Scientific novelty.For the first time, the conditions for the formation of modern gas-saturated zones in coal massifs due to gas migration and rate gas saturation have been determined.The influence of discontinuous tectonic disturbances on the migration and accumulation of gases in coal massifs has been established. Practical significance. The influence of gas migration on the formation of gas-saturated zones in coal-bearing massifs and man-caused reservoirs of the spent space of operating mines is established,which is important to ensure the safe operation of coal mining enterprises and degassing of coal massifs. Key words: gas-bearing, gas migration, tectonic disturbances, coal massif, man-caused collectors, Donets basin.","PeriodicalId":430946,"journal":{"name":"SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”","volume":"15 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":"133936256","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}

{"title":"DEVELOPMENT OF STRUCTURES OF THE FLEXIBLE CONNECTION ASSEMBLY OF THE STEEL FRAME SUPPORT FOR RELIABILITY BY GAS FACTOR","authors":"H. Haiko, M. Bovkunovich","doi":"10.31474/2073-9575-2019-1(21)-2(22)-86-90","DOIUrl":"https://doi.org/10.31474/2073-9575-2019-1(21)-2(22)-86-90","url":null,"abstract":"","PeriodicalId":430946,"journal":{"name":"SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”","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":"114670155","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}

{"title":"THE MODERN STATE OF CAPITAL MOUNTAIN MAKING AND SUGGESTION IS IN RELATION TO SUPPORT AND INCREASE OF THEIR FIRMNESS ON PJSC «SHU «POKROVSKE»","authors":"Roman Sachko, V. Levit, Julia Strelnik","doi":"10.31474/2073-9575-2022-1(27)-2(28)-36-45","DOIUrl":"https://doi.org/10.31474/2073-9575-2022-1(27)-2(28)-36-45","url":null,"abstract":"Purpose. Development and ground of rational parameters and energyeffective technologies of realization, method of guard and support of making are with the increase of depth of bedding. Methods. Further study of conformities to law of deformation of containing heterogeneous pedigree array and exposure of conformities to law of dynamics of the tensely-deformed state of containing array of making at the use of new methods of support or well-known with the changed parameters in certain geological terms on the basis of visual inspection and instrumental measuring of the mountain making at not in one’s dreams mountain pressure; comparative estimation of possible methods of support of making. Results. The improvement of the technology of installation and construction of the anchor-metal arch fastening when using the bearing capacity of the contour massif, taking into account its strengthening and unloading, is substantiated. Scientific novelty. Improvement of the design and technology of installation of anchor-metal arch fastening is based, in terms of the involvement of technical solutions, on increasing and using the bearing capacity of the near-contour massif, taking into account its unloading, based on modern research and many years of experience of PJSC “SHU “Pokrovske”. Practical significance. Achieving high rates of construction of capital and preparatory mining works, which ensure the highest production of coal in Ukraine. Keywords: mining, near-contour massif, methods of supporting mining, mining and geological conditions, anchor metal arch fastening.","PeriodicalId":430946,"journal":{"name":"SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”","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":"129677985","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}

{"title":"STUDY OF THE INFLUENCE OF PARAMETERS TECHNOLOGICAL SCHEMES OF EXCAVATION ON THE SUSTAINABILITY OF MINE ROADWAYS WHEN IMPLEMENTING THE CONCEPT OF «SMALL MINES»","authors":"S. Sakhno, V. Borodich, Yevhen Karlov","doi":"10.31474/2073-9575-2020-3(23)-4(24)-64-73","DOIUrl":"https://doi.org/10.31474/2073-9575-2020-3(23)-4(24)-64-73","url":null,"abstract":"Purpose. Investigation of the influence of the parameters of technological schemes of coal mining on the stress-strain state of the rocks containing the mine roadways in the implementation of the concept of «small mines». Methods. The study used the finite element method and the analysis method. Modeling was carried out by the method of dangerous sections. According to the first variant of the technological scheme, two dangerous sections were selected, according to the second – four. The solution of the problem was carried out in a volumetric setting with observance of the boundary conditions. Results. The analysis of the stress-strain state of the rocks around mine roadways, according to the compared options, made it possible to determine the expected state of the rocks and establish the parameters of the zones of possible destruction. From the point of view of rock stability at the stage of elastoplastic deformation of rocks, the compared options are almost equivalent. Taking into account the shorter time of maintenance of roadways, it is more expedient to use short longwalls. In this version, trapezoidal support is used as the main fastening in the roadways, and in the “traditional” version – metal arch support. It is shown that with significantly lower costs for maintaining mine roadways, their stability when using short-longwall technological schemes is better. The studies carried out make it possible to assert that for “small mines” with small production, technological schemes with short longwalls are more appropriate than the “traditional” technological schemes developed for complex mechanization. Scientific novelty. The study of the stress-strain state of rocks around mine roadways of various shapes and sizes during the analysis of technological schemes for coal mining with short longwalls made it possible to establish the orientation and parameters of the massif sections that pass into an out-of-bounds state. This was done for the first time for the conditions of the Ukrainian Donbass. Practical significance. The availability of information about the expected stress-strain state of the rock mass allows timely planning of methods of fastening and measures to increase the local stability of rocks. Keywords: stresses, deformations, development, coal mine, technological schemes of excavation.","PeriodicalId":430946,"journal":{"name":"SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”","volume":"28 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":"125988658","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}

{"title":"PECULIARITIES OF SANDSTONE DISLOCATIONS IN THE AREA OF INFLUENCE OF GLUBOKOYARSK NORMAL FAULT ON THE FIELD OF THE MINE “CAPITAL”","authors":"V. Alokhin, V. Dubosarskyi, Yelyzaveta Rostovska","doi":"10.31474/2073-9575-2020-3(23)-(4)22-7-13","DOIUrl":"https://doi.org/10.31474/2073-9575-2020-3(23)-(4)22-7-13","url":null,"abstract":"Purpose. Investigation of the conditions peculiarities of occurrence and rupture deformations of sandstones in outcrops along the right bank of the river Kazenny Torets in the field of the mine “Capital”. Methodology. In this work there were used: traditional structural-geological methods of field research; methods of field tectonophysical research; computer programs “Fabric-8” and “Win-Tensor” for processing field data, building of the stretch rose-diagrams of rupture deformations and reconstructing paleostress fields. Results. The conditions of occurrence of sandstones and their changes in space have been investigated. The systems of tectonic fractures, their mineral filling and influence on the material composition of the sedimentary rocks have been studied. Special tectonophysical studies have been carried out to determine the signs of paleostress fields of different kinematic types and ages.Reconstruction of paleostress fields was carried out using the elements of beding of cracks, grooves and slip lines on their slide mirrors. Several systems of rupture dislocations have been identified based on the results of studies in the hanging wing of the Glubokoyarsky fault. Systems of cracks have been identified, which facilitated the migration of deep-seated solutions with iron compounds. Such solutions changed the composition of sandstones in the wings of ruptured dislocations and formed zones of rock saturation with iron hydroxides up to 10 cm thick. Scientific novelty. For the first time in the outcrops on the day surface in sandstones of the hanging wing of the Glubokoyarsk fault, systems of tectonic fault dislocations of higher orders have been established. The repeated tectonic activation of the Glubokoyarsk normal fault in fields of paleostresses of different kinematic types has been established. The influence of ruptured dislocations on the formation of accumulations of iron hydroxides in rocks has been studied. Practical significance. The features of the conditions of occurrence of sandstones and the system of faulting dislocations in the hanging wing of the Glubokoyarsky fault have been established, which make it possible to predict the structural-geological, tectonic and tectonophysical conditions near fault dislocations, which is important for planning and carrying out mining operations in mine fields. Key words: sandstones, fault, tectonic cracks, iron hydroxides, reconstruction, paleostress field.","PeriodicalId":430946,"journal":{"name":"SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”","volume":"6 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":"125413611","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}

{"title":"RESEARCH OF THE EFFICIENCY OF USING «GEOVIA SURPAC» AND «MINESCHED» WHEN PLANNING MINING WORKS IN IRON QUARRY","authors":"B. Sobko, O. Lozhnikov, V. Tretyakov","doi":"10.31474/2073-9575-2021-1(25)-2(26)-7-15","DOIUrl":"https://doi.org/10.31474/2073-9575-2021-1(25)-2(26)-7-15","url":null,"abstract":"Purpose. Investigate and compare monthly mine planning method using Geovia Surpac and MineSched software. Methods. The computerized research method was used to create a scenario of mining operations in Geovia software for planning monthly operations in the open pit of LLC Eristovsky MPP. Results. It was confirmed that the new software make possible to plan the extraction of ore minerals for a certain period, with the possibility of uniform supply of the concentration plant with ore minerals of the required quality. Also, it became possible to analyze in detail the extraction of minerals from the contours of the open pit and clear production control in the working contours. Scientific novelty. The dependences of the given productivity of mining equipment on the parameters of the mining system elements were established using the MineSched software. The effectiveness of determining the quality of mining minerals is established, when planning for a longer period of time using computer programs in comparison with the old method. The economic benefits of using new software with broader functionality are determined. Practical significance. A new method of planning the ore mass extraction is proposed, which made it possible to supply minerals from the pit with average quality indicators. This contributed to a more efficient product enrichment, which in turn reduced production costs. Also by the new software it was possible to reduce the time for planning mining operations, which led to a decrease in working time to complete the task and, accordingly, reduced the cost of computing operations. Keywords: pit, geological block model, monthly mining plan, Surpac software, Minesched software, batch plan.","PeriodicalId":430946,"journal":{"name":"SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”","volume":"5 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":"117225878","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}

{"title":"TECHNOLOGY AND ORGANIZATION OF ROADWAYS DRIVING AND MAINTENANCE IN NEW COAL UNITS OF PJSC «POKROVSKE MINE ADMINISTRATION»","authors":"V. Levit, V. Kamenets, Denys Chebotenko, O. Masyk","doi":"10.31474/2073-9575-2023-1(29)-117-127","DOIUrl":"https://doi.org/10.31474/2073-9575-2023-1(29)-117-127","url":null,"abstract":"Purpose To analyze production experience, scientific and technical developments and assess the prospects for introducing new and improving proven technologies for conducting and maintaining mine workings and improving the organization of these processes. Methods. The methods used were the analysis of the accumulated production experience in the conduct and maintenance of mine workings, the organization of relevant work in Ukraine and the world, scientific and technical literature, and data from surveys and monitoring of the state of the facilities. Findings. The current technologies for conducting capital and excavation workings using the shearer and drilling and blasting methods, methods and means of ensuring the stability of workings during sinking and operation, namely, support systems, additional measures to maintain mining facilities and structures, are considered. The capabilities of the enterprise itself and contractors in terms of use, in particular, in the construction of new coal blocks at Pokrovske Mine Administration PJSC, are assess. The possibility of applying previously known but undeservedly forgotten low-cost additional measures to maintain the stability of the near-contour massif and support structures was substantiate. These opportunities will be realize in the course of the reconstruction of the coal industry after the victory over the aggressor. Originality. The results of the analysis of technologies for conducting and maintaining capital and sectional mine workings, accumulated production experience and scientific and technical developments, organization of relevant work on new coal blocks of Pokrovske Mine Administration PJSC were summarize. Practical implication. The survey and observation of the state of mine workings of new coal blocks based on domestic and foreign production experience were carry out, the level of organization of the relevant types of work was assessed, and recommendations for further development were given in view of the future development of the coal industry. Key words: preparatory face, selective-action roadheader, construction technology, mechanical fracturing, combined support, drilling and blasting technology, additional measures","PeriodicalId":430946,"journal":{"name":"SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”","volume":"31 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":"115551850","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}

{"title":"RESEARCH OF CLUSTERIZATION METHODS OF OIL DEPOSITS IN THE DNIPRO-DONETSK DEPRESSION WITH THE PURPOSE OF CREATING THEIR CLASSIFICATION BY METAL CONTENT (ON THE VANADIUM EXAMPLE)","authors":"A. Yerofieiev, V. Ishkov, Ye.S. Kozii, S. Bartashevskiy","doi":"10.31474/2073-9575-2021-1(25)-2(26)-83-93","DOIUrl":"https://doi.org/10.31474/2073-9575-2021-1(25)-2(26)-83-93","url":null,"abstract":"Purpose. Substantiate the method of typification of oil deposits of the Dnipro-Donetsk basin to create their classification by metal content. The relevance of such studies is due to the strengthening of requirements for environmental protection and comprehensive processing of mineral resources, which is determined by a number of Ukraine laws, resolutions of the Cabinet of Ministers, as well as the requirements of the State Commission on Mineral reserves to the quality and content of geological materials. Methodology. The factual basis of the work was the results of X-ray fluorescence analyzes of metal content in oils from the deposits of the Dnipro-Donetsk basin. These results were statistically processed with calculations of descriptive statistics and assessment of the peculiarities of the distribution of metal contents in oil from each field to justify the choice and calculation of normalized contents. Given that one of the most effective procedures for simplifying and minimizing the data set to create natural classifications is cluster analysis, to achieve this goal, clustering of oil deposits was carried out by various methods, which are implemented in the most popular professional statistical software platforms “STATISTICA” and “SPSS”. Results. To perform a cluster analysis of metal contents of 36 deposits of the Dnipro-Donetsk basin: Bakhmachsky, Pryluky, Krasnozayarsky, Kachalivsky, Kremenovsky, Karaykozovsky, Korobochkinsky, Kulychikhinsky, Lipovodolinsky, Monastyrychovsky, Marastyrishchevsky, Malostyrishchevsky, Malostyrishchevsky, Malostyrishchevsky, , Raspashnovsky, Sofiyivsky, Sukhodolivsky, Solontsivsky, Solokhivsky, Talalayevsky, Trostyanetsky, Turutynsky, Kharkivtsy, Shchurynsky, Yuryevsky, Yaroshivsky, Khukhryansky, Sagaidatsky №1, Sagaidatsky №13, Kybybitsy, Kyshtsy №5 №56 and Kybytsivsky №1 by different methods, analysis of clustering results and substantiation of selection of the most optimal of them for further development of natural classification of deposits by metal content in oils. Scientific novelty. To establish a weighted centroid method of cluster analysis, as the most optimal for the subject-free researcher division of oil fields by metal content (including vanadium) into taxa. Practical significance. The practical significance of the results of the work is that the constructed dendrograms of clustering of deposits by vanadium content in oils can be used as a basis for developing classifications of these deposits for environmental and technological assessment in the future. The proposed methodological approach can be used in the future to divide other groups of geological objects into natural taxa. Key words: oil fields, X-ray fluorescence analysis, metals, cluster analysis, dendrogram, weighted centroid method.","PeriodicalId":430946,"journal":{"name":"SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”","volume":"11 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":"122181401","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}

{"title":"EVALUATION OF WATER CONSUMPTION FOR EXPLOSION-PROOF IRRIGATION OF CUTTING TRACES OF UNDERGROUND EXCAVATING MACHINES","authors":"S. Mineev, O. Usov, Alexey Yanzhula, Yevhen Horodkov","doi":"10.31474/2073-9575-2023-1(29)-76-82","DOIUrl":"https://doi.org/10.31474/2073-9575-2023-1(29)-76-82","url":null,"abstract":"Purpose. Development of an engineering criterion for evaluating water consumption for cooling the cutting path of excavation machines to prevent an explosion of a mixture of air with methane and coal dust. Method. Compilation of the heat balance equation for heating the cutting trace with the cutter and its cooling with irrigation water. Results. A criterion was obtained for evaluation by coal enterprises and conciliation organizations of the compliance of the water consumption of the internal irrigation system of imported mining machines with the current domestic requirements for explosive safety by one of two factors - prevention of the flash of the cutting trace. Scientific novelty. It consists in the assumptions made, which made it possible to reliably (with a solid margin) determine the cost of cooling the cutting trace based on only one parameter - the drive power of the executive body. Practical meaning. The developed criterion allows for a coordinated policy of experts of coal enterprises, supervisory and coordinating bodies in matters of conformity of the parameters of the irrigation systems of imported mining machines with the requirements of explosive safety. Key words: explosion safety, dust methane air mixture, cutting marks, frictional sparking.","PeriodicalId":430946,"journal":{"name":"SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”","volume":"8 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":"114997087","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}