The Optimal Design Methods Of Water Supply Networks Of Small Town Based On The Fuzzy Environment

The optimal design of water supply networks has been broadly and deeply studied by many domestic and foreign scholars for that its important status in water supply engineering. The scholars advanced many kinds of optimal methods, such as classic optimal method, linear programming method, dynamic programming method, generalized reduction gradient method, simple genetic algorithms and simulated annealing method. These methods all have some limitation on practice.This paper, firstly, expatiates the content and sense about optimal design of water supply networks, briefly introduces some optimal methods that have been advanced, analyzes these methods and points out their limitation, summarizes the factors that influence the results in optimal design of water supply networks. Secondly, it introduces the principle of fuzzy linear programming(FLP). It takes yearly expenditure converting value as target function and sets up the fuzzy linear programming model on optimal design of water supply networks based on linear programming by means of taking some effective measures on fuzzy variables and some parameters setting; Finally, the fuzzy linear programming model is verified by its application on engineering project.