A kind of open-pit mine dump aquifer penetration method

Abstract

The invention discloses a method for penetrating an aquifer in an open-pit mine dump, which comprises the steps of blocking the original aquifer, rebuilding an artificial water-resisting layer, recreating the artificial aquifer, dredging the aquifer, artificially replenishing water, and the like. In the present invention, degradable plastics are used to block the original aquifer, which reduces the loss of water resources and ensures the safety of the mine pit; the raw materials for the construction of the artificial water-resisting layer come from the mining area, the construction difficulty is small, the cost is low, and the water-repelling effect is guaranteed; The aquifer adopts the form of an uplift in the middle to avoid the natural settlement of the inner dump site causing the aquifer to be compacted and subsidence or even blocked; the artificial aquifer is arranged in strips, and the construction of retaining walls reduces the impact of internal water pressure on the stability of the inner dump site. Realize artificial water replenishment in sub-regions in the later stage without letting water flow into the pit; adopt artificial water replenishment to accelerate the connection between the artificial aquifer and the original aquifer in the inner dump site, ensure the circulation of groundwater in the mining area, and use the pit water to reduce pit water waste.

Description

technical field [0001] The invention relates to a method for penetrating water layers in coal mining, in particular to a method for penetrating aquifers in dump sites in open-pit mines, and belongs to the field of coal mining. Background technique [0002] Open-pit mining refers to a mining method in which the upper layer of covering is stripped and transported away, and the lower layer of coal resources is directly mined. The way of soil is internal discharge, and the formed dump is called internal dump. [0003] In the process of open-pit mining, the direct excavation of the soil (rock) layer destroys the shallow aquifer and water-resisting layer, and the deep-seated open-pit mining will also cause serious damage to the deep aquifer and water-resisting layer . The direct exposure of the aquifer at the end makes a large amount of water resources directly flow into the open pit, which is not only a waste of water resources, but also a threat to the safety of the mine. Aft...

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Problems solved by technology

[0004] For the problems existing in the above-mentioned prior art, the purpose of the present invention is to provide a method for penetrating the aquifer of the dump in the open-pit mine, to solve the waste of water resources in the open-pit mine, and to improve the stability of the dump in the open-pit mine, thereby Improve mining production safety

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