Ecological management method for coal mining subsidence areas

Abstract

The invention provides an ecological management method for coal mining subsidence areas. The ecological management method comprises the following steps: step A, allowing a plurality of accumulated water subsidence areas to sequentially communicate with each other through a water channel so as to form a closed water circulation system; step B, constructing a water quality purification module in the water channel, and controlling accumulated water in one subsidence area to flow to a next subsidence area through the water channel; and step C, purifying accumulated water in each subsidence area one by one through the water channel, wherein if a water quality index does not meet a preset standard after sequential circulation, circulation operation is conducted till the water quality index meets the preset standard. The method has the advantages that the multiple subsidence areas communicate with each other through the water channel, the water quality purification module is arranged in the water channel, and accumulated water is purified when flowing between the subsidence areas, so pollutants deposited in the accumulated water can be cleared away; and the multiple subsidence areas are sequentially purified, so water flow in single purification is increased, the subsidence areas and the water channel are washed and cleaned through water flow, and purification effect is improved.

Description

technical field [0001] The invention relates to the technical field of coal mining subsidence area control, in particular to an ecological control method for coal mining subsidence area. Background technique [0002] my country is a country that uses coal as its main energy source. With the large-scale mining of coal, many coal mining subsidence areas of different sizes will be formed. During the formation of the stagnant water subsidence area, agricultural non-point source pollution, potential pollutant sources in farmland soil, fishery breeding bait pollution, pollution brought by river inflow, etc., will continue to increase as time goes by. Therefore, It is imminent to control the flooded subsidence area. [0003] The invention patent application with the publication number CN104692532A discloses a method for constructing a water-logged secondary wetland landscape in a high-water-level coal mining area. It divides areas according to the depth of the subsidence area, an...

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Problems solved by technology

[0003] The invention patent application with the publication number CN104692532A discloses a method for constructing a water-logged secondary wetland landscape in a high-water-level coal mining area. It divides areas according to the depth of the subsidence area, and implements different governance strategies for different areas, and finally forms a wetland ecosystem. , this method is suitable for the treatment of large-scale and large-scale subsidence areas, and does not control the polluted water bodies that have formed in the subsidence areas

In many places, taking Huainan as an example, the subsidence area is distributed in small areas and multiple points, and this method is obviously not suitable for this situation

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