Fuzzy-stochastic method for reliability analysis of groundwater allowable withdrawal
Peigui Liu · Journal of Hydraulic Engineering · 2008
Based on the concepts of fuzzy probability and cut set of fuzzy number,the fuzzy information is introduced into the risk analysis on groundwater allowable withdrawal to establish a fuzzy-stochastic risk evaluation model.The parameters of the model are fuzzily processed and the fuzzy risk can be evaluated by using the modified first order second moment method.The application example shows that other than the result of traditional statistics method the fuzzy risks for different cut sets obtained from the proposed method fall in a transitional range,which is consistent with the actual situation.The analysis provides more information for decision-maker.Besides,owing to the consideration of both the randomness and fuzziness of groundwater system,the reliability of the evaluation result is improved and the risk for excess exploration of groundwater is reduced.