Mining method choice based on AHP and fuzzy mathematics

The AHP(analytical hierarchy process) and the fuzzy mathematics method fundamental theory were used to make a synthetic assessment about the mining methods based on the synthetic assessment index system of the mining method.During this process,lots of dynamic and static,fix and non-fix quantified influence factors working on the mining method were taken into account,such as the technical and economic factors and the control degree of stress during mining etc.The influence factor indexes of the mining method were transformed into the matrix of the membership degrees.The weight matrix of the influence factors was established according to the AHP method.According to the weight matrix and the matrix of the membership degrees,the fuzzy synthetic judge model was established,and the synthetic superior degree of the mining methods based on the influence factors was gotten by the numeration of the fuzzy mathematics methods.The synthetic superior degrees of the mining methods in Xinqiao Pyrite Mine are 96.0%,80.4% and 86.5% respectively according to this method,and the first method becomes the best.