The urgency of the safety of the components of the natural environment of Central Kazakhstan is due, firstly, to the long development of solid minerals and, in connection with this, the huge expenditure of energy and water resources, and secondly, to the use of obsolete mining technologies. The complex of works on the extraction of solid minerals leads to a change in the entire range of environmental conditions in the mining areas and adjacent areas, which is due to the interconnectedness of all natural components among themselves.
The article deals with the processes, associated with work in the mining industry, the beginning of which was laid in the first half of the ХХ century. A prolonged mechanical intervention in the surface, subsurface structures of the earth‘s crust led to the development of a number of dangerous geodynamic processes, that directly and indirectly degrade the ecological state of the surrounding area.
The article outlines the principles of design of repeated geotechnology at the development of reserves in the conditions of collapsed deposits of the Zhezkazgan field for the purpose of rational management of underground mining processes. This is an integral design principle of the mine technical system with repeated geotechnology, and the foundation for the practice of designing and operation of the subsoil at the development of mineral deposits. At the designing of a mine technical system with repeated geotechnology aimed at the development of collapsed subsoil reserves, the risks and natural and man-made emergencies related to the production are taken into account. Under modern conditions, mining design cannot be employed in isolation from the principles of sustainable development, which implies not only orthodox meaning but also the development that ensures society existence without threatening the needs of future generations. In this connection, the ongoing research incorporates designing of mine technical systems with due account for the principles of sustainable development, which correspond to the current priority direction related to the development of repeated geotechnology within new frames of sustainable development of repeated underground mining of reserves in the conditions of collapsed deposits of the Zhezkazgan field. This contributes to the efficient use of resource-replenishing repeated geotechnology and the possibility of the most complete development of the georesource subsoil potential due to the enhancement of the ore potential at the operation of underground mines of Kazakhmys Corporation Ltd., which is one of the largest copper mining companies in the world.
The article discusses the features of the development of the Donskoy chromite deposit and the improvement of the applied development system with self-caving of ore. For a system with self-destruction of ore, as well as for other similar systems, the weakest point is mining under the collapsed massif, which largely affects the stability of mine workings, their safety for the entire period of stope excavation, the effect of extensive zones of collapse on the state and behavior surface. This problem is one of the most important and urgent, especially with the transition of mining operations to deeper horizons, where the technological features of the mine field are significantly complicated. Therefore, the formation of extensive zones of collapsed rocks in the process of stope excavation leads to the development of negative processes for the formation of extremely high loads on the support of mine workings, and in certain geotechnical situations, the collapse zones affect the state of the day surface, where subsidence is possible up to the formation of craters. All this can lead to disastrous consequences, both in mine conditions and on the surface. The study of the formation of caving zones during the development of ore deposits is an urgent task.
Many disturbances and changes in nature are caused by a number of human activities, such as mining engineering, town planning, and also by the influences of the activities connected to these indusries.
Central Kazakhstan is one of the regions of the Republic experiencing enormous pollution pressure caused by giant industry as the coal and metallurgical, mining and chemical and machine construction.
The article reviews main industrial induced factors that define the spatial distribution of negative processes in semi arid climate of Central Kazakhstan where the intensive mining works have been conducted since 1940s and have led to a change of relief formation, groundwater and soil contamination. The damaged areas occupy vast territories, significantly reducing the habitable space for the population of Central Kazakhstan.
The research examined two environmental components to assess and improve the ecological situation at the mining area: (a) land and water as economical component and (b) relief as main natural component.
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