In this paper,according to the aquifer water abundance of coal seam roof affected by many factors,the authors select the thickness of aquifer,the aquifer outcropped area,unit water inflow,permeability coefficient,water porosity,and structural complexity as evaluation indexes,and establish the evaluation grade standard combining quantitative evaluation indexes with qualitative evaluation indexes,fmailly establishes the hierarchical analysis-fuzzy comprehensive evaluation multi-factor evaluation model of the ...
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