Environmental and Resource-Saving Technologies and Technical Equipment for Processing and Disposal of Man-General Formation and Waste

2021 ◽  
Vol 25 (5) ◽  
pp. 10-15
Author(s):  
V.I. Lyashenko ◽  
T.V. Chekushina ◽  
T.V. Dudar ◽  
I.A. Lisovoy
Keyword(s):  
Underground Mining ◽  
Complex Structure ◽  
Ore Deposits ◽  
State Enterprise ◽  
Utilization Rate ◽  
Technical Equipment ◽  
Vital Activity ◽  
Resource Saving ◽  
Metallurgical Production ◽  
Zone Of Influence

The substantiation of environmental and resource-saving technologies and technical means for the processing and disposal of man-made formations and waste from mining and metallurgical production into underground mined-out spaces (man-made voids) as components of hardening filling mixtures is given. This will ensure the safety of the day surface from destruction and the vital activity of the population living in the zone of influence of the mining region. It was found that for the mines of the State Enterprise "VostGOK" (Ukraine), the utilization rate of waste of own production for the hardening filling is from 0.45 to 0.68; hydraulic – from 0.56 to 0.75; free-flowing – 0.62, and the extraction of each ton of salable ore is accompanied by the output of 0.7–0.8 tons of waste. The research results can be used in underground mining of ore deposits of complex structure and mining and metallurgical production.

Environmental and Resource-Saving Technologies for Void Extinguishing During Underground Ore Mining

2020 ◽  
Vol 24 (8) ◽  
pp. 28-33
Author(s):  
V.I. Lyashenko ◽  
T.V. Chekushina ◽  
T.V. Dudar ◽  
I.A. Lisovoy
Keyword(s):  
Underground Mining ◽  
Complex Structure ◽  
Ore Deposits ◽  
Electrical Activation ◽  
Vital Activity ◽  
Resource Saving ◽  
Influence Zone ◽  
Metallurgical Production ◽  
Research Results ◽  
Production Wastes

The substantiation of environmental and resource-saving technologies for the repayment of voids in underground ore mining is provided, which ensures the preservation of the day surface and the vital activity of the population living in the influence zone of the mining region. The expediency of utilizing mining and metallurgical production wastes into underground mined spaces (man-made voids) as components of hardening filling mixtures is shown. The effectiveness of the use of vibration, mechanical and electrical activation of components of the hardening filling mixture in mining enterprises has been established. The research results can be used in underground mining of ore deposits of complex structure.

scholarly journals OPTIMIZATION OF ORE DEPOSITS SEISMIC FACTOR PARAMETERS DESIGN

2017 ◽  
Author(s):  
В.И. Ляшенко ◽  
О.Г. Бурдзиева ◽  
К.Г. Каргинов ◽  
В.И. Голик
Keyword(s):  
Residential Buildings ◽  
Complex Structure ◽  
Ore Deposits ◽  
Seismic Action ◽  
Resource Saving ◽  
Seismic Safety ◽  
Experimental Section ◽  
Quantitative Parameters ◽  
Camera Systems ◽  
Seismic Vibrations

Систематизированы особенности локализации и разработки месторождений руд сложного строения с развитой тектоникой и интенсивной трещиноватостью. Приведены результаты исследования влияния взрывных работ в экспериментальном блоке. Определены количественные параметры сейсмического действия взрыва с учетом закономерностей распространения сейсмовзрывных колебаний. Определена сейсмобезопасная величина заряда для промышленных и гражданских строений, жилых зданий и других объектов. Описаны закономерности распространения сейсмического действия взрыва в районе ведения горных работ. Даны рекомендации по применению природоохранных и ресурсосберегающих технологий для камерных систем разработки с закладкой выработанного пространства твердеющими смесями. Systematized features of localization and development of ore deposits complex structure developed tectonics and intense fracturing. The results of studies of the effect of blasting operations in the experimental section. The quantitative parameters of the seismic action explosion taking into account the laws of propagation of seismic vibrations. Determined seismic safety for industrial and civil buildings, residential buildings and other objects of value of the charge.The regularities of seismic action of explosion in the area of mining. Recommendations on the use of environmental and resource-saving technologies for the development of camera systems with laying out space hardening mixtures.

scholarly journals Evaluation of efficiency and environmental safety of leaching metals from ore: ways of development and prospects

2021 ◽  
Vol 3 (3(59)) ◽  
pp. 19-26
Author(s):  
Vasil Lyashenko ◽  
Oleh Khomenko ◽  
Tatiana Chekushina ◽  
Tamara Dudar ◽  
Fedor Topolnij
Keyword(s):  
Mine Water ◽  
Underground Mining ◽  
Irrigation System ◽  
Complex Structure ◽  
Environmental Safety ◽  
Ore Deposits ◽  
Raw Material ◽  
Metal Extraction ◽  
Material Base ◽  
Technological Parameters

The object of research is traditional mining technologies and technical means in combination with underground block leaching (UBL) of metals from rock ores with their preliminary crushing with explosives in installations mounted in mine workings. One of the most problematic areas is the difficulty of achieving a given crushing quality, as well as the required height of ore storage in the chamber for the subsequent leaching of metals and a loosening factor, taking into account the control of the energy of explosive destruction of rock ores. The study used: – data from literary sources and patent documentation in the field of technologies and technical means for UBL of metals from ores in energy disturbed massifs, substantiation of technological parameters of operational blocks; – laboratory and production experiments; – physical modeling of metal extraction from ores from the average linear size of a piece of blasted ore. Analytical studies, comparative analysis of theoretical and practical results using standard and new methods were carried out with the participation of the authors. It was found that the most intensive infiltration leaching occurs when the size class of ore lumps is –100+0 mm. Metals are extracted from fractions –200+100 mm less intensively and for a longer time. To neutralize and flush the spent ore mass, it is recommended to treat it with lime solution and mine water through wells for supplying leaching solutions (irrigation system). The protection of the hydrogeological environment is carried out by silting the bottom of the chamber for collecting productive solutions with clay solution and by constant monitoring of mine water pollution in the zone of UBL influence. On the basis of the positive results obtained from the study and implementation of technologies for UBL of metals from rock ores during the development of block 5–86, in accordance with the recommendations issued, the same approach was used for blocks 5–84–86 and 5–88–90, as well as industrial experimental block 1–75–79. Due to the involvement in the production of substandard ores, the raw material base for the extraction of metals, at the operating mines, can be increased by 1.4–1.6 times. The research results can be used in underground mining of ore deposits of complex structure in Ukraine, the Russian Federation, the Republic of Kazakhstan and other developed mining countries of the world.

scholarly journals The assessment of the impact of natural and anthropogenic factors on the current stressstrain state of rock massif of burst-hazardous ore deposits in the East of Russia

2018 ◽  
Vol 56 ◽  
pp. 02011
Author(s):  
Igor Rasskazov ◽  
Boris Saksin ◽  
Vitaly Usikov ◽  
Alexander Sidlyar
Keyword(s):  
Underground Mining ◽  
Ore Deposits ◽  
Anthropogenic Factors ◽  
Mining Operations ◽  
Tectonic Plates ◽  
Radar Images ◽  
Rock Structure ◽  
Zone Of Influence ◽  
Space Data ◽  
The Impact

This paper does a case study of endogenous deposits located in the zone of influence of convergent (converging, colliding) boundaries of tectonic plates in the zone of the continent-ocean transition, where there is increased present seismic and geodynamic activity, covers the issues of the ratio of natural and anthropogenic components of the stress-strain state (SSS) in rock massifs. It has been shown that, despite the confinement of the studied deposits to a single rock structure, as well as the proximity of their common neotectonic position, the SSS of the rock massifs containing them varies significantly. Based on a comprehensive analysis of geological and geophysical data with the use of space data about the Earth (GRACE mission data for calculation of stress fields and radar images of the Earth's surface), the kinematics of the process of modern deformation of the upper part of the Earth's crust within the studied area is specified. It is established that the peculiarity of the region is the pronounced contribution of the natural component to the general present SSS of rock massifs of impactthreatening deposits. On a real example, the possibility of a predictive assessment of SSS has been shown, which is important at the stages of designing and conducting underground mining operations in severe mining-geological and burst -hazardous conditions.

Experience in the development of innovative underground geotechnologies for mining of ore deposits

2020 ◽  
pp. 338-350
Author(s):  
I. V. Sokolov ◽  
Y. G. Antipin ◽  
N. V. Gobov ◽  
I. V. Nikitin
Keyword(s):  
Systematic Approach ◽  
Underground Mining ◽  
Mineral Resources ◽  
Environmental Safety ◽  
Ore Deposits ◽  
Operating Costs ◽  
Processing Waste ◽  
Ore Preparation ◽  
Additional Value

Based on an analysis of the design principles and practice of underground mining of ore deposits, the most significant features, trends to develop and directions to enhance of underground geotechnology in the field of opening and preparation, mining systems, filling works and ore preparation have been established. The main signs of innovation - scientific research and implementation in production in order to obtain additional value, are highlighted. Various approaches to the development of innovative underground geotechnologies are shown and a methodology for their justification is formulated based on a systematic approach implemented in the framework of the concept of integrated development of mineral resources and on the principles of economic efficiency, industrial and environmental safety, completeness of subsoil development. The experience of the IM UB RAS on the development and implementation of innovative underground geotechnologies in the design and industrial operation of a number of ore deposits is given, which significantly increased the completeness and quality of ore extraction from the subsoil, increased labor productivity in sinking and stoping works, reduced capital and operating costs for ore mining and to utilize mining and processing waste in the mined-out space.

scholarly journals Mining of rich iron ore deposits of complex structure under the conditions of rock pressure development

2020 ◽  
Vol 201 ◽  
pp. 01022
Author(s):  
Serhii Pysmennyi ◽  
Mykhailo Fedko ◽  
Nataliia Shvaher ◽  
Serhii Chukharev
Keyword(s):  
Rock Pressure ◽  
Complex Structure ◽  
Ore Deposits ◽  
Mining System ◽  
Mining Depth ◽  
Parabolic Shape ◽  
Pressure Development ◽  
Iron Ore Deposits ◽  
Horizontal Pressure ◽  
Compensation Chamber

The purpose of research is to increase the ore mass extraction ratio when mining rich iron ores by changing the shape of the stope chamber, as well as to substantiate its stable parameters under the conditions of the rock pressure manifestation. Used in mines existing methodologies for determining the structural elements of mining system are based on calculated equivalent spans of outcropping the stope chambers, which have a rectangular or tent shape. For the first time using the ANSYS software package, it has been determined that the formation of a compensation chamber of quasi-parabolic shape can significantly reduce the stresses concentration around the stope block. Thus, the formation of a stope chamber of a quasi-parabolic shape makes it possible to reduce vertical stresses as compared to horizontal ones without increasing horizontal pressure. When mining the extraction block, it is proposed to form the stope chamber of a quasi-parabolic shape with geometric parameters that directly depend on the parameters of the deposit, the depth of mining, and the direction of main stresses action. Dependences have been determined of the stresses value on the depth of mining and the physical properties of rocks, as well as on the length along the strike of the ore deposit. Thus, depending on the mining depth and length along the strike, rock pressure on the stope chamber of a quasi-parabolic shape decreases under non-uniform loading. The formation of a stope chamber of a quasi-parabolic shape will increase by 1.2 – 1.5 times the volume of pure ore that is recovered from the block.

scholarly journals Influence of structural and textural features of ores and rocks on mine dust explosion hazard during development of pyrite deposits

2020 ◽  
Vol 192 ◽  
pp. 03017
Author(s):  
Marina Rylnikova ◽  
Viktor Fedotenko ◽  
Natalia Mitishova
Keyword(s):  
Sulfur Content ◽  
Underground Mining ◽  
Environmental Safety ◽  
Ore Deposits ◽  
Dust Explosion ◽  
Explosion Hazard ◽  
Mining Operations ◽  
Mine Dust ◽  
Mining Works ◽  
Explosive Properties

In the practice of mining works, sulfide-dust explosions often occur during underground development of pyrite ore deposits: copper-zinc, lead-zinc, copper-nickel, antimony, and others. This makes it necessary to conduct researches aimed at improvement of methods for studying the explosive properties of sulfide dust and development of industrial and environmental safety requirements for mining operations. Currently, there is no generally accepted state-approved regulatory procedure for assessment of sulfide dust explosion hazards during underground mining operations in Russia. Assessment of the type and concentration of mine sulfide dust in the underground mine atmosphere is vitally important for solving this problem. In practice, ores even with a sulfur content of less than 35% can constitute a sulfide dust explosion hazard, although mine dust with a sulfur content of less than 35% does not explode in laboratory conditions. To identify the cause of this phenomenon and develop technical solutions for ensuring safety of underground mining operations, change in the sulfur content of various mine dust fractions obtained from primary disintegration of sulfides was studied.

Research the Utilization Rate of Aluminum Alloy Material

2014 ◽  
Vol 595 ◽  
pp. 79-82
Author(s):  
De Ying Sun
Keyword(s):  
Aluminum Alloy ◽  
Complex Structure ◽  
Unit Cost ◽  
High Strength ◽  
Alloy Sheet ◽  
Machining Process ◽  
Utilization Rate ◽  
Material Consumption ◽  
The Individual ◽  
The Cost

There are many parts in aerospace fixing device, the 7075 - t351 brand aluminum alloy is a commonly used material of these parts [2].The material has high strength, good toughness, wear resistance and resistance to spalling corrosion resistance and other characteristics; After the machining deformation, comprehensive mechanical processing performance is good [1]. As a result, the materials are widely used in aerospace equipment. Smaller wall thickness, complex structure, multiple azimuth need processing, is the characteristics of these parts, make the individual parts machining material consumption is larger, increase the cost of the material consumption. In this paper, through the analysis of part structure and machining process, adopt to layout method, in order to improve the utilization rate of aluminum alloy sheet metal, reduce the unit cost.

scholarly journals Use of residual rock strength in bearing structures in underground ore mining

2019 ◽  
Vol 20 (2) ◽  
pp. 193-203
Author(s):  
Vladimir I. Golik ◽  
Yury V. Dmitrak ◽  
Oleg Z. Gabaraev ◽  
Yuri I. Razorenov
Keyword(s):  
Bearing Capacity ◽  
Carrying Capacity ◽  
Critical Analysis ◽  
Rock Strength ◽  
Underground Mining ◽  
Ore Deposits ◽  
Theory And Practice ◽  
Mining Engineering ◽  
Scientific Support

The relevance of the study is explained by the need to improve technological processes with the increasing complexity of the development of ore deposits with an increase in the depth of development, the use of powerful technology and an increase in stresses in arrays of ore-bearing rocks. The need to minimize the risk of mining requires the development and use of tools for managing an array. The purpose of this study is to systematize information about the theory and practice of using the residual bearing capacity of destroyed rocks from the practice of underground mining to improve the methods used to control the geomechanics of ore-bearing arrays. The complex of research includes analytical, full-scale, laboratory and theoretical methods that are used to identify the phenomenon of the use of the residual carrying capacity of destroyed rocks. To achieve this goal information on the use of bearing floors made of intact and destroyed ores and rocks, as well as other materials, is systematized. A brief description of the scientific support of mining engineering tasks is given. The phenomenon of the use of residual bearing capacity of disturbed rocks in the structure arising in the mountain massif is characterized. A critical analysis of the concepts of array management is given. Considered alternative options for creating structures for solving problems of reducing the health risk of workers and improving the quality of ores. A new typification of structures using the residual strength of destroyed rocks is given. It has been proved that in underground mining there is an opportunity to realize the residual bearing capacity of the destroyed rocks to create structures with desired properties, which contributes to solving the tasks of labor protection and improving the quality of ores.

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