Method and device for determining grouting target area of coal seam floor based on fuzzy hierarchical analysis
A technology of fuzzy hierarchical analysis and coal seam floor, applied in the direction of instrumentation, design optimization/simulation, calculation, etc., can solve the problems of not being widely popularized, large human subjective factors, and inconsistent evaluation standards, so as to facilitate popularization and reduce human subjective factors , to determine the accurate and scientific effect
Active Publication Date: 2019-06-25
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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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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[0020] The method of this embodiment is as follows figure 1 shown. It mainly includes the establishment of a comprehensive evaluation sub-system of water resistance, the determination of the vertical horizon of the grouting target area, the determination of the plane position of the grouting target area, and the verification of the effect of the water resistance evaluation model. The following is a detailed description.
[0021] 1. Establish a comprehensive evaluation system for water resistance
[0022] (1) Select the main control factors of the evaluation system
[0023] The grouting horizons of the coal seam floor are mainly the thin layer limestone of the coal seam floor and the top strata of auspicious lime, both of which belong to limestone, and the main controlling factors affecting the karst development need to be analyzed. In order to determine the stratum of the grouting target area, a comprehensive evaluation system for the overall water resistance of the sub-seg...
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The invention relates to a method and a device for determining a coal seam floor grouting target area based on fuzzy hierarchical analysis. Based on the main controlling factors of the water-repelling property of the floor rock layer, the present invention establishes a relatively comprehensive water-repelling comprehensive evaluation sub-system, uses the fuzzy analytic hierarchy process to assign weights to each main controlling factor, and comprehensively considers the interaction and combination effect between various indicators , to establish a relatively uniform judgment method for the grouting target area, which makes the discovery of the target area more operable and easy to promote; it can make full use of the acquired geological data, and can more accurately determine the location of the grouting target area.
Description
technical field [0001] The invention relates to a method and a device for determining a target area, belonging to the technical field of coal mining, in particular to a method and a device for determining a grouting target area for a coal seam floor based on fuzzy hierarchy analysis. Background technique [0002] The Ordovician limestone in the deep coalfield has the characteristics of strong water content and high water pressure, and under the influence of multiple factors such as paleotopography, paleogeomorphology, paleohydrology and paleoclimate, the water-resisting rock formation from the bottom of the coal seam to the strong aquifer The thickness is highly heterogeneous and anisotropic, especially in areas where folds, faults, collapse columns and other geological structures are developed, the effective water-retaining layer becomes weaker or even missing, resulting in most coals in the lower group being seriously affected during mining. The threat of water inrush at t...
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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 董书宁徐斌王皓王红梅刘再斌
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP