Collaborative protective mining method for multi-level water resources in mining area

Abstract

The invention discloses a collaborative protective mining method for multi-level water resources in a mining area, and relates to the technical field of coal mining. The method comprises the steps that through analyzing layer / division characteristics of a structure of mining overburden strata, the characteristics of a mining-induced stress path in each structural layer and the layer / division characteristics of the permeability of the mining overburden strata, the layer, height, permeability and other parameters of an overburden strata seepage isolation layer are determined; based on an overburden strata ''seepage isolation'' control principle, a mining and separation control effect of the mining parameters and a mining layout method on the multi-level water resources, the collaborative protective mining method for multi-level water resources in the mining area, and a diversion regulating effect are studied, non-destructive monitoring and dynamic evaluation and prediction of water seepage in the surrounding rock at the mining face, the development of cracks in the mining overburden strata, and the change of shallow water level are carried out; and finally a collaborative protectivesystem for multi-level water resources of water blocking of the overburden strata seepage isolation layer, a seepage zone and leakage zone diversion, and collecting water storage of a mined-out area is formed. According to the method, the protection requirements of water amount, ecological water level and water circulation system in an ecologically fragile mining area can be well met, and the application range is wide.

Description

technical field [0001] The invention relates to the technical field of coal mine mining, in particular to a method for synergistic and protective mining of multi-level water resources in a mining area. Background technique [0002] Water conservation coal mining is an important way to solve the coordinated development of coal mining and ecological environment protection. The current research on the mechanism of water-retaining coal mining mainly includes: supported by the key layer theory and mining overburden seepage theory, the formation of structural key layer control principles, aquitard stability control principles, and water-resisting key layer protection principles, etc. ; Supported by the stable relationship between groundwater and surface ecology in mining areas or the concept of ecological "original state" protection, the concepts of "coal-water coexistence", "ecological water level", aquitard reconstruction and "coal-water bionic co-mining" have been formed . ...

AI Technical Summary

Problems solved by technology

However, on the whole, the existing mechanisms and methods of water-conservation coal mining cannot simultaneously better meet the protection requirements of water volume, ecological water level and water circulation system in ecologically fragile mining areas.

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