Method and device for judging mining degree in mining area, storage medium and system

Abstract

The invention provides a method and device for judging a mining degree in a mining area, a storage medium and a system. The method comprises a step of counting a change relationship between a surfacesubsidence rate and a depth-to-thickness ratio, drawing a change curve of the surface subsidence rate and the depth-to-thickness ratio or determining a function relation between the surface subsidencerate and the depth-to-thickness ratio, counting a change relationship between the surface subsidence rate and a width-to-depth ratio, drawing a change curve of the surface subsidence rate and the width-to-depth ratio or determining a function relation between the surface subsidence rate and the width-to-depth ratio, and determining value intervals of a depth-to-thickness ratio and a width-to-depth ratio corresponding to a mining degree type according to an inflection point of the change curve of the surface subsidence rate and the depth-to-thickness ratio and an inflection point of the changecurve of the surface subsidence rate and the width-to-depth ratio, a step of calculating actual depth-to-thickness ratio and width-to-depth ratio of the mining area, and a step of judging the actualmining degree of the mining area. The technical problem of a large deviation of a mining degree judgment result of a thick, extra thick or thin coal seam caused by only using a judgment method of a width-to-depth ratio in the prior art is solved.

Description

technical field [0001] The invention relates to the field of coal mines, in particular to a method, device, storage medium and system for judging the degree of mining in a mining area. Background technique [0002] Mining adequacy is an important concept in mining subsidence and an important index to judge the degree of mining damage to the surface. At present, the mining adequacy is judged by the width-depth ratio (the ratio of the mining space width to the average mining depth L / H0), which is mainly divided into: extremely insufficient mining (L / H0<0.3), critically sufficient mining (L / H0=1.2~ 1.4), super-full mining (L / H0>1.2~1.4), incomplete mining is between extremely insufficient and critical full mining. This judging method is currently a common method in the field of mining subsidence. It is suitable for near-horizontal, gently inclined, and medium-thick coal seam mining conditions with little difference in overburden lithology and mining thickness. The resul...

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Problems solved by technology

[0003] Based on the above problems, the present invention proposes a method, device, storage medium and system for judging the degree of mining in a mining area, which solves the problems of thick, extra-thick or thin coal seams caused by only using the judging method of width-depth ratio in the prior art. The technical problem of large deviation in the judgment result of mining degree

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