Mining area water resource comprehensive utilization method based on mine water underground storage

Abstract

A mining area water resource comprehensive utilization method based on mine water underground storage comprises the following steps of: step 1, determining the hydrogeological parameters of the roof of an underground reservoir; based on the regional geological hydrogeological data, the formation structure of a coal seam roof and the distribution of a water-blocking layer are determined through ground hydrogeological drilling and underground drainage drilling; step 2, determining the water storage system of the underground reservoir; step 3: comprehensively usingthe water resources in the mining area; through the water storage system of the underground reservoir in step 2, external water resources, the underground drainage and the roof water resource are incorporated into the comprehensiveutilization of the water resources, and the water resource utilization is carried out by using aseparate water supply principle; therefore, the method reduces the ineffective discharge of mine water resources and avoids the waste of the water resources; the external purchase of domestic water is reduced, and the related expenses of an enterprises are saved. Finally, the sustainable utilization ofthe mine water resources in the arid ecologically vulnerable area of North China is realized, and the valuable groundwater resources in the area are protected to a maximum extent.

Description

technical field [0001] The invention relates to the technical field of comprehensive application of hydrogeology, hydrogeochemistry, environmental engineering, water supply and drainage and mining engineering, and in particular to a method for comprehensive utilization of mine water resources based on underground storage of mine water. Background technique [0002] First of all, if there is an aquifer in the area of ​​the water-conducting fracture zone in the underground coal mining process, the groundwater in the aquifer will enter the goaf and become underground mine water. In order to ensure the safety of underground coal mining, mine water must be pumped from the underground. Discharged to the ground, resulting in a waste of water resources. [0003] Secondly, my country's water resources and coal resources are distributed in reverse, especially in the Ordos Basin in Northwest China, where coal reserves are large and output is large, but water resources are extremely sca...

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Problems solved by technology

[0002] First of all, if there is an aquifer in the area of ​​the water-conducting fracture zone during underground coal mining, the groundwater in the aquifer will enter the goaf and become underground mine water. In order to ensure the safety of underground coal mining, mine water must be pumped from the underground. Discharged to the ground, causing a waste of water resources

[0003] Secondly, my country's water resources and coal resources are distributed in reverse, especially in the Ordos Basin in Northwest China, where coal reserves are large and output is large, but water resources are extremely scarce, and surface evaporation is 6 times that of precipitation, and mine water is discharged to the surface , but due to the large amount of evaporation, not only cannot be effectively stored and utilized, but also cause problems such as surface pollution and salinization

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