Research on the assessment of mining geological environmental influence based on variable weight-analytic hierarchy process and uncertainty measurement method

In order to solve the problem of constant weight model may lead to failure in mine geological environment impact, and the variable weight theory was introduced into the mine geological environment impact assessment. Firstly, the evaluation of mining geological environmental influence analysis model of uncertainty measurement was established according to the characteristics of Hengshan Baiguo region's gypsum mines. The uncertain measurement functions of all indicators were established. Secondly, the variable weight theory was used to improve the index weights which were calculated by Analytic Hierarchy Process. Finally, the risk grade prediction of mine geological environment impact was made according to grade determination based on confidence identification criteria, and it is concluded that mine shallow risk is greater than the middle, middle risk is greater than the deep. The analysis results are consistent with the actual situations. And it also provides a new way for the mine geological environment impact assessment.