A MULTI-OBJECTIVE OPTIMIZATION MODEL FOR RIVER WATER RESOURCES ALLOCATION: A CASE STUDY OF XIZHIJIANG RIVER

摘要

This paper presents a multi-objective optimization model for the rational water resources allocation of Xizhijiang River in southern China. An optimization model for reservoir regulation is first set up which takes the optimal objective function as to minimize the lose caused by water shortage while has the water balance, flood control, reservoir storage, navigation, turbine discharge and power generation as the constraints, and the Dynamic Programming is employed to solve the model. Then a multi-objective optimization model is presented to allocate the water resources among every users, including daily life user, industrious user, agriculture user and ecologic user. The model objectives include maximizing the economic profit of water supply for economic users and maximizing the water supply guaranteed ratio of ecologic user, and an interactive decision-making process is proposed to solve the model. The reservoir regulation and water resources allocation schemes of Xizhijiang River are investigated based on the projected water demand in 2010.