Strip mine dumping method
A technology for open-pit mines and dumps, which is applied in open-pit mining, earth drilling, special mining, etc. It can solve problems such as poor timeliness, high cost of covering soil, and long cycle, and achieve low cost and significant economic and environmental benefits , The effect of reducing the cost of land purchase
Pending Publication Date: 2020-03-24
中煤科工集团沈阳设计研究院有限公司
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Problems solved by technology
[0004] Regardless of whether the surface soil resources are sufficient or not, the current open-pit mine dumps are facing problems such as high cost, long cycle, and poor timeliness of covering soil in the outer dump site.
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[0034] To make the above-mentioned purposes, features and advantages of the present invention more obvious and understandable, below in conjunction with the attached Figure 1 to Figure 6 The present invention will be further described in detail with specific embodiments.
[0035] In this embodiment, the same engineering parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the words "inner" and "outer "Refer to the direction toward or away from the geometric center of a particular engineering part, respectively.
[0036] In this embodiment, the total amount of dumping outside the open-pit mine dump is 66 million m3, the service life is 4 years, and the floor area is 1.67km 2, the final disposal elevation is +640m, the final disposal height is 90m, the final loose coefficient is 1.15, and the capacity reserve coeff...
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The invention discloses a strip mine dumping method, and relates to the technical field of open-cast mining. According to the method, surface soil in the occupying range of an outer dumping site is pre-dug, waste of surface soil resources is avoided, and the problems of shortage of soil covering resources of a strip mine, high cost of long-distance transportation of the surface oil, soil coveringlag and the like are solved; by reasonably determining the pre-digging depth, the pre-digging construction progress and the surface soil stacking height, the stacking time of the pre-dug surface soilis shortened, the retention degrees of organic matters and nutrients in the surface soil are improved, and the vegetation recovery effect during dumping site reclamation is improved; by reasonably determining the stacking position and the reasonable stacking height of the pre-dug surface soil, the cost of surface soil pre-digging can be reduced to the lowest; and the base elevation of the dumpingsite is reduced by pre-digging the surface soil with a certain depth, a reduction value is equal to a pre-digging depth value, the land purchasing cost of the mine is reduced, and the economic and environmental benefits are quite remarkable.
Description
technical field [0001] The invention relates to the technical field of open-pit mining, in particular to an open-pit mine dumping method. Background technique [0002] Soil discharge engineering is an important part of open-pit mining. Due to the constraints of the coal seam occurrence conditions and the relationship between stripping-mining-draining time and space, the stripped materials are discharged to the outside of the stope at the initial stage of mining. This requires the surface boundary of the open-pit mining site Set up a dump site in an appropriate area outside to accommodate the externally stripped material. Eventually, an external dump with a certain height and shape will be formed on the surface. After the service period of the external dump expires, it must be covered with soil and revegetated. According to the formation process of the outer dump, the rocks and other strippings excavated in the deep part of the open-pit mine stope are often discharged to the...
Claims
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IPC IPC(8): E21C47/02
CPCE21C47/02
Inventor 王忠鑫马培忠宋波苏迁军
Owner 中煤科工集团沈阳设计研究院有限公司