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METHOD OF OPEN DEVELOPMENT OF INCLINED DEPOSITS WITH THE USE OF SPOIL BANKS
METHOD OF OPEN DEVELOPMENT OF INCLINED DEPOSITS WITH THE USE OF SPOIL BANKS
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机译：利用水库开放开发倾斜矿床的方法
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摘要
FIELD: mining.;SUBSTANCE: invention relates to mining industry and can be used in open development of inclined ore deposits of round and elongated shape to control the strip-mining regime. For this purpose, in the method for the open development of inclined ore deposits, including the formation of a working zone, the technology of overburden bench developing and ensuring freight communication of mining floors with the surface, career bolted area in depth is divided into two zones. Within the upper zone, on the side of a bottom layer, the first stage of the development is selected, directly adjacent to the terminal side of the career, and openings are placed on it, and from the side of the hanging layer a temporary non-working board is formed with an angle of inclination close to the limiting one and openings are also placed on it, at the base of the temporary non-working side, a horizontal platform for protection against rockfall is arranged, width of which is taken from the calculation of the placement on it of a slope of falling stones, a stone shelter with a hydraulic excavator mounted on it, such as a "back-hoe" and a road, after working off the first stage, they pass to the second stage of the formation of the career bolted area, during which, from the side of the hanging layer, a second temporarily inoperative side is formed, located below the first, respectively with the device at its base, and on the openings board, after which they proceed to the third stage of the deposit development, during which a third temporary non-working side is formed on the side of the hanging layer and begin a consistent reopening of the first, and then the second temporarily non-working boards with the development of cased between them and the terminal side volumes, working out of these volumes is done layer by layer with the use of hydraulic excavators of the "back-hoe" type, and as they are worked out on the liberated terminal board, openings are formed, after the first and second temporarily non-working sides have been unopened and the corresponding volumes are being processed, the fourth stage of work is being carried out with the simultaneous de-commissioning of the third temporary non-working side, rock mass falling during the re-opening, as well as the previous temporarily non-working boards, down to the stone protection areas, is loaded with hydraulic excavator installed on the stone embankment, loaded into vehicles and transported to the surface, while the freight communication of the mining floors with the surface is switched to new openings of the limiting band of ore from the side of the hanging layer.;EFFECT: technical result is the decrease of current overburden coefficient within the initial period of field development.;1 cl, 2 dwg
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