Inner dump type strip mine pit bottom reservoir segmented construction method

Abstract

The invention discloses an inner dump type strip mine pit bottom reservoir segmented construction method comprises the following steps of S1, processing end slopes, wherein clay is discarded at the lowest step of the inner waste dump of the strip mine, so that a waste dump isolation layer is formed; S2, discharging concrete to the lowest step slope faces of the end slopes on the two sides of the pit bottom to form end slope isolating layers; S3, sealing the bottom to form a pit bottom isolating layer; S4, discarding gravel into the pit of the strip mine; S5, laying a geotechnical cloth to forma top slab isolation layer so as to complete capping work; S6, re-adopting clay on the lowest steps of the end slopes of the inner waste dump to form a reservoir seal isolating layer; S7, building multiple reservoirs stepwise in the advancing direction of the strip mine; S8, conducting water resource storage work and completing installation of water storage wells; S9, completing installation of water fetching wells; S10, conducting water resource storage. The inner dump type strip mine pit bottom reservoir segmented construction method achieves local deep storage of water resources and provides water resource guarantee for environmental governance of the strip mine.

Description

technical field [0001] The invention relates to a segmented construction method of an inner drainage open pit bottom reservoir, which belongs to the field of mining and environmental protection. Background technique [0002] In the northern part of my country, the climate is dry, the annual evaporation is greater than the precipitation, and water resources are scarce. The evaporation loss of water resources during the water storage process of the open-air water storage device on the surface is large, and the waste of resources is serious, and the construction of a closed water storage device is costly. , and occupy a large amount of space, which greatly increases the water storage cost of the enterprise. [0003] Open-pit mining is a process of removing the covering on the ore body and extracting useful minerals from the open-surface mining field. Internal drainage open-pit mining refers to the process of directly discharging the stripped materials to the goaf during the open...

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Problems solved by technology

[0005] In view of the problems existing in the above-mentioned prior art, the purpose of the present invention is to provide a kind of subsection construction method of the reservoir at the bottom of the open-pit pit, which solves the low utilization rate of water resources in the mining area and improves Pit utilization, while reducing the mining cost of open pit mines

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