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

A technology of coal mining subsidence area and high water level, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of water system disorder, surface water quality deterioration, Problems such as water resource distribution disturbance, to achieve the effect of reducing large-area occupation, uniform spatial distribution, and changing spatial occurrence conditions

Inactive Publication Date: 2014-07-23
CHINA UNIV OF MINING & TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a water resource cascade regulation and water quality ecological purification method in the high-water level coal mining subsiden

Method used

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

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Embodiment 1

[0031] Embodiment 1: this water resources cascade regulation and control and water quality ecological purification method include the following contents:

[0032] 1) The distribution of surface water in coal mining subsidence areas with high water level is relatively concentrated. For the distribution of surface water in backbone ditches and rivers, it is necessary to establish restraint and hierarchical control and cascade regulation of water resources to form a certain level of water resource spatial distribution. An artificial water circulation system integrating control and adjustment;

[0033] 2) The river channel that forms a certain level difference control is a relatively static water body. On the basis of the cascade regulation of the backbone channel, the three-dimensional layout of submerged plants, emergent plants and floating plants, through the natural material exchange during the growth cycle of the vegetation, the adsorption cascades To control the pollutants i...

Embodiment 2

[0048] Example 2: Cascade control measures: Xuzhou Chengbei mining area is a typical high-water level mining area. There is a large area of ​​water accumulation in the coal mining subsidence area. This area is the old course of the Yellow River and the Dingwan River. Due to the large difference in terrain elevation caused by surface subsidence, considering the requirements of water resource distribution, irrigation, and flood discharge, a control gate is established to form a cascade control.

[0049] 1) According to a step difference of 1-2 meters, three levels of control and four levels of water surface are established. The entire water system connects the large water surface and the Dingwan River in the coal mining subsidence area through the backbone channel, and the Dingwan River flows down to the Beijing-Hangzhou Canal. During the control of the entire water system, irrigation The rising water level also facilitates the discharge of flood water during the flood season, fo...

Embodiment 3

[0052] Example 3: Constructed wetland measures:

[0053] 1) Taking the drainage area of ​​the coal mining area as the planning theme of the constructed wetland, the water source mainly depends on surface runoff, irrigation return water and some domestic sewage. From the analysis of the water catchment pattern in the discharge bearing area, the catchment water in the discharge bearing area is mainly supplied by surface and soil seepage, and the incoming water is mainly surface water. Constructed wetlands in coal mining areas are planned according to the surface flow constructed wetland model. Hydrological conditions are the basic conditions for the planning and construction of constructed wetlands. The backbone ditch rivers in the coal mining subsidence area are controlled by cascade gates to regulate water resources, and the water flow into the discharge area is not continuous. During the planning and construction of the Kadlec surface flow constructed wetland, the structure ...

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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.

Description

technical field [0001] The invention relates to a water quality ecological purification method in a coal mining subsidence area, in particular to a water resource cascade regulation and water quality ecological purification method in a high water level coal mining subsidence area. Background technique [0002] ① Disturbance of the water system and the spatial distribution of water resources in coal mining subsidence areas: the subsidence of high-water level mining areas destroys the balance of water systems in the region, and surface subsidence causes the water level to approach or reach the surface, and the soil moisture content of the cultivated layer is close to or reaches saturation. This leads to a lack of air in the soil, causing the gradual death of dryland crops. Due to the relatively low terrain of the surface subsidence area, the precipitation in the rainy season will gather in the subsidence area, causing the original drainage system to fail, flooding the farmland...

Claims

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Application Information

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IPC IPC(8): C02F3/32E02B1/00E02B11/00
CPCY02W10/10
Inventor 渠俊峰陈浮李钢王坤张绍良王辉赵华丁忠义
Owner CHINA UNIV OF MINING & TECH
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