Comprehensive evaluating method for manless mining face exploitation geological condition of thin seam

Abstract

The invention provides a comprehensive evaluating method for manless mining face exploitation geological condition of a thin seam, which belongs to a coal mine geological condition evaluation method. According to manless mining face exploitation characteristic of the thin seam, seven comprehensive evaluation factors of geological structure, coal seam thickness, coal seam stability, coal seam inclination angle, coal seam stiffness, coal seam top/base plate condition and working face lumpiness, which affect manless mining face exploitation of the thin seam. Furthermore 15 base factors are furthermore determined. Furthermore the membership function and weight of each evaluating factor are analyzed. In combination with a fuzzy comprehensive evaluation theory, a comprehensive evaluating model for manless mining face exploitation geological condition of thin seam is constructed; and a comprehensive evaluating result grade and reliability index are determined, thereby realizing comprehensive evaluation for manless mining face exploitation geological condition of the thin seam. The comprehensive evaluating method has important meaning for improving process selection of manless mining face and optimizing parameter, improving coal mining environment and improving safety condition and efficiency of the mining face.

Description

technical field [0001] The invention relates to a method for evaluating geological conditions of coal mines, in particular to a method for comprehensively evaluating geological conditions for unmanned working face mining in thin coal seams. Background technique [0002] After years of mining, the reserves of medium-thick and thick coal seams in mines in many areas of my country are close to depletion, and the mining of thin coal seams (thickness ≤ 1.3m) has been in a state of slow development for a long time due to economic, technical and safety reasons. The recoverable reserves of thin coal seams in my country's coal reserves are about 6.15 billion tons, accounting for about 19% of the total coal recoverable reserves in the country. However, according to incomplete statistics, the annual output of thin coal seams in my country only accounts for about 10.4% of the total coal production in the country. , the ratio of production and reserves is seriously out of balance. [000...

AI Technical Summary

Problems solved by technology

[0004] Technical problem: In order to overcome the deficiencies of the existing comprehensive evaluation technology for mining geological conditions in unmanned working faces in thin coal seams, the purpose of the present invention is to provide a method with simple thinking, reasonable o

Images