A method for water conservation and reclamation in open-pit mines

Abstract

The invention discloses a strip mine water retention reclamation method. A waste disposal site is separately paved with a mixing waste disposal layer, a water-resisting layer, a water-bearing layer and a surface soil layer from bottom to top, the water-resisting layer is composed of clay, and the water-bearing layer is composed of sandy soil or gravel; the surface soil layer is paved with an upperpart original earth surface soil layer, a water retention material layer and a lower part original earth surface soil layer from top to bottom, and the upper part original earth surface soil layer iscomposed of soil or humus soil; and the water retention material layer is separately paved with a first permeable rock wool board, macromolecule resin, plant food and a second permeable rock wool board from top to bottom. According to the strip mine water retention reclamation method, a plant bionic stratum is established, the water-resisting layer, the water-bearing layer and the surface soil layer are sequentially established in the waste disposal site, water retention matching materials are arranged in the surface soil layer to prevent surface soil water sources from evaporating rapidly, the strip mine ecological remediation and reclamation efficiency can be improved, the problem that the high evaporation capacity moisture of a strip mine in ecological fragile arid and semi-arid landsis difficult to keep can be effectively solved, the efficiency of strip mine ecological reconstruction can be improved, and ecological benefit and environmental benefit are remarkable.

Description

technical field [0001] The invention relates to a reclamation method, in particular to a water conservation and reclamation method for open-pit mines. Background technique [0002] The process of open-pit mining is actually an alternate development process of "constructing space on the entity" and "constructing the entity on the space". The stripping of rock and soil and the mining of minerals have caused land excavation damage and ecological damage; the outer dump site has occupied the original surface and also destroyed the original surface form. At present, my country's open-pit mines are mainly distributed in northern regions such as Inner Mongolia and Xinjiang. This area belongs to the arid and semi-arid climate zone, with little rainfall, large evaporation, low natural vegetation coverage, and fragile mining ecology. Affected by the special climate in this area, auxiliary measures need to be frequently taken during the vegetation restoration process, such as moisture ...

AI Technical Summary

Problems solved by technology

Affected by the special climate in this area, auxiliary measures need to be frequently taken during the vegetation restoration process, such as moisture conservation measures (covering grass curtains, sunshade nets), watering measures, etc., although they can play a certain role, but the operation cost is high

The high evaporation characteristics of arid and semi-arid regions have brought great challenges to water conservation and ecological restoration in open pit mines in this region

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