Method for water resource cascade adjustment control and water quality ecological purification in high groundwater level coal-mining subsidence area

高潜水位采煤沉陷区水资源梯级调控及水质生态净化方法

Abstract

The invention discloses a method for water resource cascade adjustment control and water quality ecological purification in a high groundwater level coal-mining subsidence area, belonging to methods for water quality ecological purification in coal-mining subsidence areas. According to the method, after the high groundwater level mining area is mined, due to surface subsidence and high groundwater level, a large quantity of water is accumulated in the surface, the water resource utilization efficiency is low, the water quality is relatively poor, and the water quality of a water body in the mining area generally has the problems of heavy metal and sulfide pollution, water body eutrophication and the like according to existing analytical tests. The method is mainly used for solving the problems of water distribution of accumulated water in the mining subsidence area, water quality ecological purification and the like, the adjustment control of surface water resources is mainly realized through main rivers distributed in the mining area, N-stage control and Nstage water surface are established on the main rivers due to relatively large surface elevation difference after mining area subsidence, and pollutants and eutrophic substances in the water body are purified by corresponding three-dimensional distributed aquatic plants and animals according to test analysis results of the water quality of the water body so as to achieve the purpose of water quality purification of the water resources of the accumulated water in the high groundwater level mining area.
一种高潜水位采煤沉陷区水资源梯级调控及水质生态净化方法,属于采煤沉陷区水质生态净化方法。该水资源梯级调控及水质生态净化方法,高潜水位矿区开采后,由于地表沉陷、潜水位高,导致地表大量积水,水资源利用效率低且水质较差,根据已有的分析测试矿区水体水质一般存在重金属、硫化物污染和水体富营养化等问题。本发明主要是解决矿区沉陷积水的水量分配和水质的生态净化等问题,地表水资源的调控主要是通过矿区分布的骨干沟河建立节制,由于矿区沉陷后地表高程差异比较大,在骨干沟河上建立N级控制和N+1级水面,根据水体水质的测试分析结果,对应立体布局水生植物和动物,净化水体中的污染物和富营养化物质,实现高潜水位矿区积水水资源的水质净化的目标。

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