Method and device for determining coal bed bottom plate grouting target region based on fuzzy layer analysis

Abstract

The invention relates to a method and a device for determining a coal bed bottom plate grouting target region based on fuzzy layer analysis. According to the method, a comprehensive water-resisting property evaluation subsystem is built based on main control factors of bottom plate rock layer water-resisting properties, weights are given to the main control factors by a fuzzy layer analysis method, interaction and combined effect between indexes are comprehensively considered, a uniform judgment method of the grouting target region is built, discovery of the grouting target region has operability, popularization is facilitated, acquired geological data can be sufficiently used, and the position of the target region can be more accurately judged.

Description

Technical field [0001] The invention relates to a method and device for determining a target area, belonging to the technical field of coal mining, in particular to a method and device for determining a coal seam floor grouting target area based on fuzzy hierarchical analysis. Background technique [0002] The Ordovician limestone in the deep coal field has the characteristics of strong water richness and high water pressure. Under the influence of multiple factors such as ancient topography, ancient landform, ancient hydrology and ancient climate, the lower coal seam floor to the strong Ordovician water-bearing rock layer The thickness has the characteristics of high unevenness and anisotropy. Especially in areas with developed geological structures such as folds, faults, and collapsed columns, the effective water barrier becomes weaker or even missing, resulting in serious damage to most of the lower groups of coal. Threat of water inrush from the bottom of the Austrian Grey I...

AI Technical Summary

Problems solved by technology

Although these methods have some merits, there are several deficiencies in the actual engineering application of these methods: (1). The selection of evaluation indicators for rock formation water resistance is not comprehensive, and it is difficult to consider the interaction and interaction between various indicators. Combination effect; (2). Human subjective factors are relatively large, the evaluation standards are not uniform, and the requirements for personnel quality are high, so it cannot be widely popularized

But so far, there is no comprehensive evaluation method based on fuzzy analytic hierarchy process and GIS information platform for the selection of floor grouting target area

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