Mineral Exploitation

Lunar mining project
Text-scientific work on the topic “Combined method of mining mineral deposits.” Scientific article on the specialty “Mining”

© V.V. Zavornitsyn, V.R. Asadullaev, 2010 UDK 622.271: 622.272 B.V. Zavornitsyn, V.R. Asadullaev COMBINED METHOD FOR EXPLOITING DEPOSITS OF USEFUL FOSSIL It is shown that the main goal of the combined method of development is to increase the efficiency of both open and underground work due to the joint use of their favorable technological features. The relationship between the slope angle of the pit side and the efficiency of mining the field from both economic and environmental points of view has been revealed. It has been proved that such a technology can drastically reduce the reduced costs of mining, reduce the damage caused by mining to the environment and increase the intensity of field development. Key words: fail-safe technology, combined method, drilling production, development method. Seminar 13ZHE domestic and foreign practice mining operations, the combined development of mineral deposits, which provides for combined (simultaneously mennoe or sequential) opencast and underground mining operations in one field and providing a more complete removal and protection with less subsoil extraction of mineral raw materials and reducing the harmful effects on the environment. The main goal of the combined development method is to increase the efficiency of both open pit and underground work due to the joint use of their favorable technological features. The efficiency of open pit mining directly depends on the overburden volume in the open pit circuit. The volume of overburden rocks, in turn, is determined by the slope angles of the quarry sides. Moreover, depending on the depth of development, the influence of the angle of the side of the quarry on the volume of rock mass in its contour has a geometric progression. Thus, there is a direct relationship between the slope angle of the open pit and the efficiency of mining the field from both an economic and environmental point of view. Taking into account all the above, we can formulate the problem as follows. Create pre-engineered open-cast mining conditions with steep sides, using the advantages of underground technology. The statement of the problem assumes that the mining conditions for open-cast mining are established and unchanged. In foreign practice (Japan, Canada, USA), cases of using such technology are known when developing valuable …

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