The Storage And Detention Flood Area Is Assumed Flood Protection Assignment And The Scale Is Fuzzy Decision-Maked And Optimal Selection

The Engineering of the storage and detention flood area is one of the important flood protection Engineering in the Songhuajiang river valley. The storage and detention flood area can resolve the flood problem basically in Haerbin.At the same time, it works out a solution to the core problem in Songhua jiang river valley. The installation has a lot of factors. It is difficult to be settled by classical theories because of fixed quality and quantity.This thesis bases on the improvement of traditional way, overcomes its I ack experience, takes the more advanced fuzzy decision-making and optimal selection theory, researches into the established model and gets the result that it's best to set Pangtoupao storage and detention flood area on the left side of Menjiang river by comparing the four schemes and ten objectives of fixed quality and quantity.The result holds identical views with the result of usual economic evaluation. So it's the first time using fuzzy decision-making and optimal selection theory to resolve the important and pragmatic problem comprehensively and scientifically. It makes certain of the storage and detention flood area in the flood protection Engineering of Songhuajiang river valley.