In order to determine the difficulty of filling pipe plugging and find out the main factors caus-ing pipe plugging,analytic hierarchy process(AHP)method,entropy weight method and cloud model theory were used to carry out a risk assessment of the filling pipe plugging.12 index factors,such as volume fraction of filling slurry and filling multiple,were selected,and the comprehensive weight coeffi-cients of each index obtained by using AHP entropy weight combination method.The comprehensive weight coefficient was coupled with the cloud model method to obtain the comprehensive certainty,so as to determine the risk level of filling pipeline plugging.Based on the field data and other relevant data,three mines that had adopted the filling mining method were evaluated.The results showed that the the filling pipe plugging risk levels of Gongbei gold mine,Xincheng gold mine and Kaiyang phosphate mine were level Ⅱ,Ⅲ and Ⅱ respectively.The method was compared with other methods,and the results showed that it had a high accuracy.
filling pipeline is blockedrisk assessmentanalytic hierarchy process methodentropy weight methodcloud model
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