A method for analyzing the disturbance damage degree of the mining floor on the confined aquifer of a coal mine

Abstract

The invention discloses an analytical method of an exploiting baseplate disturbance destruction degree on a coal mine confined aquifer. The analytical method comprises the following steps of: selecting a baseplate disturbance destruction depth and a baseplate disturbance destruction area as an evaluation index for quantitatively evaluating the baseplate disturbance destruction degree; determining the baseplate disturbance destruction depth h and the disturbance destruction depth S when the disturbance destruction depth is h; respectively constructing a baseplate disturbance destruction depth membership function mu and the disturbance destruction area membership function eta; calculating to obtain the baseplate disturbance destruction degree membership function lambda; and establishing an analytical calculation model of the exploiting baseplate disturbance destruction degree on the coal mine confined aquifer. The analytical method provided by the invention evaluates the disturbance destruction degree from the space aspect, and more accurately reflects the disturbance destruction condition of a baseplate, the method can accurately evaluate the exploiting security of the confined aquifer according to the specific evaluation result, and compared with the prior art, more influence factors are considered, so that the evaluation result has scientificity.

Description

technical field [0001] The invention relates to a method for analyzing the disturbance and damage degree of a mining floor on a coal mine confined aquifer, and belongs to the technical field of mining engineering. Background technique [0002] The safety of coal seam mining on confined aquifers depends critically on the degree of disturbance and damage to the floor. At present, the safety evaluation criteria and principles for mining on confined aquifers in the "Regulations on Water Prevention and Control in Coal Mine" are mainly the safety factor of water inrush (the revised safety factor of water inrush takes into account the damage of mine pressure to the bottom plate, etc.), but The water inrush coefficient only takes the maximum depth of floor disturbance damage as an evaluation index, lacks the analysis and research on the scope of floor disturbance damage and other factors, and cannot accurately evaluate the disturbance damage of the floor, thus bringing danger to the...

AI Technical Summary

Problems solved by technology

At present, the safety evaluation criteria and principles for mining on confined aquifers in the "Regulations on Water Prevention and Control in Coal Mine" are mainly the safety factor of water inrush (the revised safety factor of water inrush takes into account the damage of mine pressure to the bottom plate, etc.), but The water inrush coefficient only takes the maximum depth of floor disturbance damage as an evaluation index, lacks the analysis and research on the scope of floor disturbance damage and other factors, and cannot accurately evaluate the disturbance damage of the floor, thus bringing danger to the mining of coal seams on confined aquifers nature, may cause water inrush accidents, and even cause well flooding accidents in severe cases

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