A method for regulating groundwater resources in coal mining areas

Abstract

The invention discloses a method for regulating and controlling an underground water resource of a coal mining region. The method comprises the following steps: S001: acquiring geological and hydrologic foundation data in the mining region by a system; S002: determining a protection region needing to protect underground water and a gathering region for gathering the underground water in a water-containing layer, and determining the position of an underground reservoir; S003: controlling the underground water in the water-containing layer to permeate into the underground reservoir through adopting a manner of separating the water-containing layer in the protection region and communicating the water-containing layer and a water guide fissure zone located below the water-containing layer in the gathering region. By separating and protecting the water-containing layer and guiding the underground water to be gathered, the effect of loosening soil through mining can be effectively utilized and a collection capability of atmospheric precipitation is improved; the underground water is guided and is gathered and permeated into the underground reservoir region and a water resource supply amount of the underground reservoir is improved.

Description

technical field [0001] The invention relates to the technical field of coal mining, in particular to a method for controlling groundwater resources in a coal mining area. Background technique [0002] There are abundant coal resources in the western region of my country, but the water resources in the Shanxi, Shaanxi, Mongolia, Ninggan and Gansu regions in the west only account for 6.8% of the country's total, which is a serious water shortage area and an ecologically fragile area. In recent years, due to the large-scale subsidence and goaf formed by coal mining in my country, the groundwater has partially declined, forming a large-scale groundwater precipitation funnel, and causing a series of environmental geological problems. According to statistics, the annual subsidence area of ​​coal mining in the country reaches 150,000 square kilometers, and the area of ​​the groundwater funnel formed by analogy to the overexploitation of groundwater can reach 0.88 times. [0003] C...

AI Technical Summary

Problems solved by technology

[0005] However, as the mining area increases, the area of ​​the groundwater funnel or the affected area gradually expands, resulting in a decrease in the efficiency of groundwater "collection" in underground reservoirs, an increase in the difficulty of regulating and managing groundwater resources, intensified surface water and soil loss, and an increase in the area of ​​surface ecological impact, resulting in environmental degradation.

Images