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

{"title":"JUSTIFICATION OF HYDRODYNAMIC TA ASSESSMENT METHODOLOGY GEOMECHANICAL INFLUENCE OF NEEDLE FILTER INSTALLATIONS","authors":"I. Sadovenko, O. Inkin","doi":"10.31474/2073-9575-2022-1(27)-2(28)-67-77","DOIUrl":"https://doi.org/10.31474/2073-9575-2022-1(27)-2(28)-67-77","url":null,"abstract":"Purpose. The purpose of this work is to develop and test the methodology for determining changes in the level of groundwater over time as a result of the operation of several contours of needle filters of different configurations and the impact of these changes on the subsidence of the earth’s surface. Methods. The proposed comprehensive approach includes the collection, systematization and analysis of data on the existing methods of calculating the subsidence of the earth’s surface at the base of structures in the event of an expected decrease in the level of groundwater. The method of numerical hydrogeological modeling and analytical calculations was used to determine the magnitude of the decrease in the groundwater level and subsidence of the earth’s surface. Findings. According to the results of numerical modeling of geofiltration, it was established that after the second month of operation of the first circuit of needle filters, the groundwater level mark at a distance of 20 m from them is 50.4 m, at 50 m – 51 m, at 100 m – 51.6 m. the main decrease of water occurs in the first 7 m from the drainage circuit and is 6.35 – 3.8 m. After 6 months of operation of the first circuit and 4 months of the second water level mark at a distance of 20 m from the circuit is 46.7 m, at 50 m – 47.8 m, at 100 m – 48.9 m. This, respectively, leads to a decrease in the level at these points by 6.8 m, 5.7 m and 4.6 m. it was established that in the first 100 m from the pit, soil subsidence at the end of operation of the two needle filter circuits will vary from 3.9 cm to 2.6 cm. Originality. The method of determining changes in the groundwater level as a result of the operation of several needle filter circuits and the impact of these changes on the subsidence of the earth’s surface has been substantiated and verified. The developed technique allows to analyze and preliminarily quantitatively assess the hydrodynamic regime and geomechanical state of rocks under the influence of needle filters. Practical implication. The proposed method can be used for engineering forecasts of subsidence of the earth’s surface during water-reduction works with needle filter installations, which is especially relevant in the conditions of built-up areas. Keywords: drainage, needle filters, groundwater, earth’s surface, subsidence.","PeriodicalId":430946,"journal":{"name":"SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”","volume":"90 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":"126433129","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 STABILITY OF ROLLING STRAPS OF STEEL COAL LAYERS WITH THE WAY OF PROTECTION BY WOODEN FIRE","authors":"Yevgen Podkopayev","doi":"10.31474/2073-9575-2021-1(25)-2(26)-52-63","DOIUrl":"https://doi.org/10.31474/2073-9575-2021-1(25)-2(26)-52-63","url":null,"abstract":"Purpose. To evaluate the impact of overburden protection structures, in the form of wooden fires, on the stability of lateral rocks in the coal massif and the operational condition of the preparatory workings on the excavation section of the coal mine, which develops layers of steep fall. Methods. An integrated approach was used as a research method, which included conducting a mine experiment, equivalent modeling and interpretation of the obtained results. Results. The stability of retractable drifts on excavation sections was evaluated by the amount of convergence of the side rocks on the production contour, taking into account the deformation characteristics of the protection structures. During the full-scale experiment, when the change in the distance between the benchmarks on the contour of the retractable lane in the area affected by the cleaning works was recorded, the largest displacements of the side rocks were recorded from the roof. At a distance of l≥60 m behind the treatment face, the relative deformation of the protection structures reached ε = 0.5-0.6. After that, the increase in roof displacements was limited, and the superstructure supporting structures operated in the mode of increasing resistance. During laboratory research, in the process of compressing models of wooden fires and rolling fires from sleepers, their deformation characteristics were established. At uniaxial compression of models there was a consolidation of experimental samples. With an increase in the compressive force and relative deformation of the experimental samples, a simultaneous change in the modulus of deformation and stiffness of the simulated security structures by quadratic dependence was recorded. Scientific novelty. It is experimentally proved that in the zone of influence of treatment works the convergence of lateral rocks on the contour of the retractable road of the steep coal seam under protection by wooden fires along the length of the excavation section is limited after compression of security structures by 50-60% due to their compaction. the layout of the elements and their number, determine its rigidity. Practical significance. To ensure the stability of retractable drifts on mines that develop steep fall layers, it is necessary to focus on the use of flexible protective structures located above the drift and performing the function of load-bearing supports, which by changing the deformation characteristics provide smooth deflection of lateral rocks in the coal massif. Keywords: steep fall of coal seams, haulage gate, side rocks, security structure, deformation characteristics, rigidity.","PeriodicalId":430946,"journal":{"name":"SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128502481","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":"PROSPECTS OF USING THE LATEST TECHNOLOGIES OF SHAFT AND WELL CONSTRUCTION FOR THE POST-WAR DEVELOPMENT OF THE COAL INDUSTRY IN UKRAINE","authors":"V. Levit, V. Kamenets, Yurii Mukomel","doi":"10.31474/2073-9575-2023-1(29)-98-116","DOIUrl":"https://doi.org/10.31474/2073-9575-2023-1(29)-98-116","url":null,"abstract":"Purpose Analysis of production experience, scientific and technical developments and assessment of prospects for the use and development of the latest technologies for the construction of vertical mine shafts and wells for the post-war development of the coal industry of Ukraine. Methods. The methods of analysis of the accumulated production experience of drilling shafts and wells, first, in the leading mining countries and in Ukraine, as well as scientific and technical literature, were use. Findings. The classification of technologies of vertical shafts and wells construction methods was consider. It’s tested and promising ones for Ukraine were analyze, in relation to the restoration and creation of mining capacities, technological schemes and equipment for the construction of vertical openings mainly with mechanical destruction of rocks in the hole, the production experience of the Donetskshakhtoprokhodka and Spetsshakhtoburinnia trusts was summarize. from the point of view of use, in particular, during the construction of new coal blocks of PJSC «Mining Management «Pokrovske», large-scale investment projects. The possibility of using a modified parallel technological scheme for traditional blasting technology is substantiate. The prospects of mechanized boring of shafts in Ukraine – by drilling and with the use of shaft boring combines of leading world manufacturers – were evaluate. These opportunities can be realize in case of acceptance and implementation by Ukraine's partners of a modern analogue of the \"Marshall Plan\" after the victory over the aggressor. Originality. The results of the analysis of technological schemes and methods of drilling vertical shafts and wells, the accumulated production experience and scientific and technical developments are summarize, the trends and prospects of the development of mine construction technologies – the driver of the development of the national mining industry – are considered. Practical implication. The analysis of technological schemes and methods of drilling vertical shafts and wells was perform based on domestic and foreign production experience. Key words: vertical shaft, borehole, sinking technology, mechanical fracture, rodless boring, shaft-borehole machine, pilot borehole.","PeriodicalId":430946,"journal":{"name":"SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”","volume":"20 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":"126718594","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":"INFLUENCE OF UNDERMINING ROCK MASS ON THE STATE OF MINE WORKINGS","authors":"B. Kodunov, A. Nosach","doi":"10.31474/2073-9575-2021-1(25)-2(26)-64-72","DOIUrl":"https://doi.org/10.31474/2073-9575-2021-1(25)-2(26)-64-72","url":null,"abstract":"Purpose. Research of influence of shifts of rocks on a condition of mine workings at their undermining by longwalls. Methods. The study used a computer simulation method. The simulation was performed by simulating the process of rock shift. The initial coordinates of the points of the rock mass turned into the final ones. This allowed to build sections of the rock mass after undermining, which characterized its deformed state, as well as graphs of displacements and deformations in the mine workings. Results. The performed simulation showed that during the movement of the longwall, the mine working (drift), which is undermined, consistently falls into the zone of horizontal deformations of tension, compression and complete displacements. After stopping the longwall, part of the mine working near the boundaries of the displacement area will be constantly in the zones of stretching and compression. It is established that at a distance of 40 m in front of the moving face, the mine working is in the least favorable conditions with maximum vertical compression deformations. Under the given conditions the drift for the most part after completion of clearing works is in a zone of full subsidence. This zone is characterized by the maximum possible subsidence and the absence of deformations. The performed researchers showed that the conditions of undermining of the southern field haulage drift of seam l7 proved to be quite favorable. Shifts and deformations did not cause a significant deterioration in the state of mine working, except for the increase of slopes on the edge sections of the subsidence trough, which makes it difficult to carry out electric locomotive rolling. For any other purpose, after minor repairs, the mine working may continue to operate. Scientific novelty. The study of the process of shear by computer simulation allowed to establish the patterns of shear and deformation during undermining of the mine working. This is the first time for the conditions of the Ukrainian Donbass. Practical significance. The obtained results can be used to predict the condition of mine workings that are undermined during the cleaning works in similar conditions. Key words: undermining overlying mine workings, shifts, deformations, zone of full subsidence, subsidence trough.","PeriodicalId":430946,"journal":{"name":"SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”","volume":"24 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":"126770628","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":"REGULARITIES OF KARST DEVELOPMENT IN CARBONATE ROCKS (ON THE EXAMPLE OF NOVOTROITSKY DEPOSIT)","authors":"T. Volkova, K. Repina","doi":"10.31474/2073-9575-2019-1(21)-2(22)-72-79","DOIUrl":"https://doi.org/10.31474/2073-9575-2019-1(21)-2(22)-72-79","url":null,"abstract":"","PeriodicalId":430946,"journal":{"name":"SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”","volume":"22 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":"126904463","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 ENERGY INTENSITY OF CARBON MASS DESTRUCTION","authors":"Dmytro Saveliev, I. Shaikhlislamova, E. Stolbchenko","doi":"10.31474/2073-9575-2022-1(27)-2(28)-46-56","DOIUrl":"https://doi.org/10.31474/2073-9575-2022-1(27)-2(28)-46-56","url":null,"abstract":"Purpose. Study of the physical and mechanical characteristics and energy intensity of the destruction of coal massif rocks by dynamic loads, taking into account the directional change in their properties. The methods. To study and evaluate the energy intensity of the destruction of anisotropic rocks under dynamic loads, experimental studies were carried out in laboratory conditions. The selected samples were saturated with surfactants (surfactants). After the destruction of the samples by dynamic loads, the character of the destruction of the rock was evaluated by the granulometric characteristics using the method of optical microscopy. The energy intensity of the destruction was determined by the amount of work spent on the formation of a new surface of particles of rock destruction products. Findings. The analysis of the granulometric and energy characteristics of samples of coal-bearing stratum rocks showed that with increasing alkalinity of surfactant solutions, a decrease in the specific energy of destruction by explosive loads of quartz rocks is observed. The effect of surfactants on the nature of limestone destruction is especially noticeable. Under the action of explosive loads, the specific energy of destruction when this rock is saturated with soda ash decreases. The saturation of coal with different degrees of coalification practically does not affect the energy intensity of their destruction under impact and explosive loads. The originality. A method of estimating the energy intensity of the destruction of anisotropic rocks under dynamic loads has been developed, taking into account the directed change in their properties under the action of surfactants. The priority of the method is protected by a patent of Ukraine. Practical implementation. The use of surfactants makes it possible to reduce the specific energy of destruction when the rock is subjected to dynamic loads, which creates the basis for the development of new energy-saving methods of crushing the coal massif. Keywords: coal massif, explosive destruction, surfactants, granulometry, dispersion.","PeriodicalId":430946,"journal":{"name":"SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”","volume":"95 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":"133693486","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":"WAYS TO INTENSIFY DOWNHOLE PROCESSES OF ROCK DESTRUCTION DURING WELL CONSTRUCTION","authors":"A. Pavlychenko, A. Ihnatov, I. Askerov","doi":"10.31474/2073-9575-2022-1(27)-2(28)-87-95","DOIUrl":"https://doi.org/10.31474/2073-9575-2022-1(27)-2(28)-87-95","url":null,"abstract":"Purpose. Development of structural foundations for downhole devices (hydraulic hammers) to create dynamic loads on the drilling technological tool and study of the basic physical and chemical processes occurring in their hydraulic circuit and the bottomhole zone of the well. Methodology. The study of the patterns of constructive and technological interaction of the main parts and assemblies of the hydraulic percussion mechanism was carried out when testing its physical model included in the functional diagram of a special drilling stand equipped with appropriate power and hydraulic units, as well as a control and measuring unit. Studies of the physicochemical properties of flushing fluids and their influence on the course of rock mass destruction processes, intensified by the application of generated dynamic loads, were carried out using standardized devices for monitoring the parameters of special process fluids, as well as by bench destruction of experimental rock blocks with the appropriate complex technical measurements. Findings. A basic structural diagram of a hydraulic percussion device has been developed, with its physical embodiment, in which a significantly different execution and functioning of the interacting nodes creates the prerequisites for effective control of the machine in question. The presence of mutual consistency of the circulation processes implemented in the hydraulic hammer model allows its use in various modifications of the regime and technological support of progressive methods of wellbore formation. The proposed hydraulic hammer contains in its design a fairly large number of unified parts and is practically devoid of the presence of wear elements, which ensures its significant motor resource and high maintainability. Simultaneous combination of a hydraulic hammer with the use of activated flushing fluids in the technological scheme of bottomhole assemblies allows to obtain a significant increase in the mechanical fracture rate due to reduced surface tension and acceptable rheological characteristics of the dispersion medium for rock destruction. Originality. The use of alternately different pressure chambers in the design of the hydraulic hammer makes it possible to form a single closed circulation-technical system, with the possibility of effective regulation of its energy performance and operational transition between different drilling modes. Practical value. The proposed layout of the hydraulic percussion machine makes it possible to expand the areas of its possible application in the technical and technological schemes of downhole drilling tools, as well as the implementation of measures to eliminate downhole accidents and complications. Key words: well, hydraulic hammer, drilling, surfactant, rock destruction, flushing fluid, mechanical speed, bottom hole.","PeriodicalId":430946,"journal":{"name":"SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”","volume":"23 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":"133624270","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":"TO THE QUESTION OF ONLINE MONITORING OF METAL CONTENT IN ORE SHIPPED BY MINES TO PROCESSING FACTORIES OF KAZAKHMYS CORPORATION LLC","authors":"Z. Abdrakhmanova, A. Kan, Roman Yun, S. Yefimenko, Julia Strelnik","doi":"10.31474/2073-9575-2021-1(25)-2(26)-16-27","DOIUrl":"https://doi.org/10.31474/2073-9575-2021-1(25)-2(26)-16-27","url":null,"abstract":"Purpose.Creating an effective system of online monitoring of ores sent to processing plants, focused not only on the profile element (copper), but also on related (silver, cadmium, molybdenum, arsenic) elements (the need to determine the content of silver and cadmium from 1+ ppm). Creating a procedure for the objective distribution of drain metal between mines. Methods. Study of the influence of numerous interfering factors on the test results of ores on the canvas of technological conveyors of concentrators of Kazakhmys Corporation LLC by X-ray fluorescence method (RFM) became EDXRF RKS RLP-21T determination of low content of silver and cadmium (1 + .ppm). The study was conducted in three stages. At the first stage, the following methods were developed: RKS calibration method, RKS measurement procedure, variable ore-RKS clearance method, RKS – Client ZhZF-1,2 system software for registration and display of RKS content data online. elements and the amount of metal in the railway warehouses of ore from mines and quarries and put into operation three RKS RLP-21T on ZHZF-1 2. In the second stage, four RKS RLP-21T were launched (BZF, KZF, NPR). At the third stage, RKS was launched at ZHZF-1.Аnd the basic principle was used in the research: the deposits are different – the RKS calibration method is the same for everyone. Results. The choice of X-ray fluorescent energy dispersion (EDXRF) ore control station (EDC) for online monitoring of metal content in ores on the canvases of technological conveyors of concentrators at ores size class -300 mm is substantiated. Scientific novelty. For the first time in Kazakhstan, on the scale of a huge mining enterprise Kazakhmys Corporation LLP, in practice, the task of online monitoring of the contents of the main (Cu, Pb, Zn) and accompanying (Ag, Cd, Mo) elements at low (1+ ppm) contents of silver, cadmium and 15+ ppm of molybdenum with an ore size of -300mm. For the first time in world practice, it has been proven that EDXRF RKS can provide online monitoring of complex composition copper-containing polymetallic ores for the content of not only basic, but also accompanying (silver, cadmium) components. For the first time in Kazakhstan on the scale of a huge mining enterprise LLC “Kazakhmys Corporation” in practice solved the problem of online monitoring of the content of basic (Cu, Pb, Zn) and related (Ag, Cd, Mo) elements at low contents of silver, cadmium (1+ ppm ) and molybdenum content (15+ ppm) at ore size -300mm. For the first time in world practice, it has been proven that EDXRF RKS can provide online monitoring of polymetallic ores containing copper for the content of not only basic but also related (silver, cadmium) components. Practical significance. Eight RKS RLP-21Ts were put into production. VTK wagon test points on cone crushers KKD 800/160 KD-1 ZHZF-1, KKD 1500/180 KD-2 ZHZF-1, KKD 1500/180 BZF were liquidated. The procedure of objective distribution of drain metal between mines has been establishe","PeriodicalId":430946,"journal":{"name":"SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”","volume":"121 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":"122132753","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":"INVESTIGATION OF THE DEPENDENCE OF CHANGES IN THE VOLUME OF INDUSTRIAL STOCKS ON THE AVERAGE CAPACITY OF PEAT DEPOSITS Strikha","authors":"V. Strikha, S. Zhoukov, Mykola Svitelskiy, O. Yaremenko, M. Krynytska","doi":"10.31474/2073-9575-2021-1(25)-2(26)-104-115","DOIUrl":"https://doi.org/10.31474/2073-9575-2021-1(25)-2(26)-104-115","url":null,"abstract":"Purpose. One of the aspects of energy saving and increasing the level of the state energy security is the replacement of expensive imported energy by cheaper domestic ones. The surface location of peat deposits and the relatively low cost of organizing and conducting mining operations make this mineral a potentially efficient resource and energy saving tool. Currently, in the development of peat deposits, a mandatory element of the source data for the project is the availability of detailed exploration materials, which requires significant material costs and time, so it is proposed to develop a simplified method of calculating industrial reserves, based on studying the dependence of the industrial reserves size on the depth of the deposit. The use of the method proposed by the authors allows to develop multivariate solutions, both individually and in different deposits. The positive aspect of the methodology is also the minimum amount of initial data: balance sheets and average capacity of the deposit. Methodology. To obtain the dependences of the balance stocks utilization ratio on the average depth of the deposit, the tightness of the connection was previously estimated by the pairwise correlation coefficient (r). Analytical expressions of these dependences were detected using a regression analysis apparatus. 21 peat deposits were selected for the study, which are located in 10 regions of Ukraine. Results. Balance reserves and reserves within development; deposit losses taking into account different options; industrial stocks and utilization of balance stocks were determined during analyzing the types of losses in deposits. To determine the balance reserves of the deposit, the deposit was divided into layers and the area of the deposit was calculated for each of them. Based on the performed calculations, a study of the dependence of the utilization ratio of balance reserves on the average depth of the deposit was conducted. It has been found that balance stocks utilization ratios are closely related to the average depth of the deposit. Thus, for the maximum utilization ratio of balance stocks r = +0.854, and for the minimum r = + 0.932. Analytical expressions of these dependences were detected using a regression analysis apparatus. Practical significance. According to the results of research, the part of each type of losses was determined. The received technique allows: to select raw material base for the enterprise, to minimize quantity of source data (are accepted from available sources), to receive multivariate decisions, simplifies calculations of volumes of industrial stocks. Key words: peat use, peat resources, balance stocks, industrial stocks, technological indicators, stock utilization ratio.","PeriodicalId":430946,"journal":{"name":"SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”","volume":"313 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":"123494934","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":"DESIGN OF MINING PROCESSES USING THE STUDY OF THE STATE OF RESERVE","authors":"A. Khorolskyi","doi":"10.31474/2073-9575-2023-1(29)-83-97","DOIUrl":"https://doi.org/10.31474/2073-9575-2023-1(29)-83-97","url":null,"abstract":"Purpose. Develop a new approach to the design of processes that accompany the development of mineral deposits. This will allow considering the multiplicity and different degree of influence of the parameters on the overall efficiency. Methods. A decomposition approach is applied to optimize multi-parameter processes of mining production. Network models and optimization algorithms on networks and graphs for finding the optimal strategy for the development of mineral deposits. A model of the study of changes in the state of reserves for the design of technological processes that accompany the extraction of minerals. Results. The method of optimization of the parameters of the development of mineral deposits was proposed based on the presentation of alternative options of technological processes in the form of a network model. Depending on the type of mineral, as well as the expediency of mining waste enrichment, two design strategies are proposed. If it is advisable to enrich the waste, then it is necessary to maximize the value of a ton of rock mass. If it is impractical to enrich mining waste, it is necessary to minimize the costs of mining a ton of mineral. To increase the efficiency of exploitation of ore deposits of minerals, it is proposed to use mining waste as a component mixture for paving the produced space. The volume of work on the establishment of the developed space is determined on the basis of marginal analysis. In order to increase the efficiency of the operation of coal deposits, it is proposed to minimize the amount of waste that comes to the surface. Alternative options for the exploitation of the coal deposit were considered and two strategies were proposed: one consists in the minimization of waste, which involves selective extraction and laying of the produced space, and the other strategy consists in the maximization of the extraction of associated minerals, which involves combine extraction, separation of cargo flows, additional enrichment of waste. Scientific novelty. Scientific novelty consists in the development of a new approach, as well as in the creation of models for the development of mineral deposits. The algorithm for designing the process of development of mineral deposits is given. If it is impractical to enrich mining waste, then we apply the programming of the alternative graph to the minimum, which will minimize the cost of extracting 1 ton of useful mineral, in the other case, the programming of the alternative graph to the maximum, which will allow to maximize the cost of 1 ton of mining mass. Fulfillment of these conditions will increase the efficiency of production and reduce the man-made load on the environment. Practical implication. It consists in the creation of a package of application programs for designing the processes of development of mineral deposits. Keywords: strategy, production waste, design, ecology, technological scheme, graph, software.","PeriodicalId":430946,"journal":{"name":"SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”","volume":"10 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":"128877198","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}