Risk assessment of ground subsidence disaster of coal mining in loess gully areas
In order to carry out the prevention and control measures of subsidence disaster and ensure the safe effectively and production of coal mine orderly,the fuzzy analytic hierarchy process(FAHP)was introduced into the subsidence disaster evaluation,and the com-prehensive evaluation model of subsidence disaster in loess gully region was constructed.The model first determines the weights of each evaluation factor based on the Analytic Hierarchy Process,and then conducts fuzzy comprehensive evaluation through the membership function.Finally,according to the principle of maximum membership,the overall comprehensive evaluation of mining subsidence disas-ters is carried out to obtain reasonable and reliable evaluation results.The method uses AHP to determine the weight,fuzzy comprehen-sive evaluation method to select a reasonable membership function,and comprehensively considers the influence of multiple factors and levels,making the evaluation results more scientific.The model was used to evaluate the working face of a coal mine comprehensively in Inner Mongolia,and the calculated results are consistent with the actual risk situation of the mine.The application shows that the estab-lished fuzzy analytic hierarchy process takes into account factors such as fault activity,mining height,and ground fissure width,and uses fuzzy comprehensive evaluation to quantitatively process the evaluation factors to improve the accuracy of the evaluation results.It has promotion and application value in the evaluation of surface subsidence disasters in mining areas similar to loess gully coal mines.
mining subsidencefuzzy analytic hierarchy process(FAHP)influencing factordisaster evaluationloess gully areas
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