The Optimal Allocation Of Water Resources In Nanyang City

Water is the source of the lives, and the material basis of the human beings' survival and the social and economic development. Water resources can guarantee the sustainable development. The sustainable water resources development is involved in population resources, environment and society. With the rapid population increase, the social and economic development, and the people's living standard improvement, the quantity and quality of water requirement is becoming more and more higher, but the available freshwater is limited. Additionally the pollution and waste of water resources has sharpened contradiction between water supply and water requirement, which becomes one of the key obstacles of social development. The optimal allocation of water resources is an effective way of solving the problem. So the study on optimal allocation of regional water resources is important and meaningful to the sustainable development of society, economy and environment.m this dissertation, the research present situation about water resources optimization is concluded and discussed. The optimal allocation model of water resources facing sustainable development is built up. In the end, the water resources optimization model is certified taking JiYuan city for an example. The concrete contents are as follows:(1) The basic optimization theory of water resources is systematically discussed. Based on sustainable development theory, the recognition and measurement of social, economic, and environmental benefit are studied, and a concrete expression of the three objects is given. Considered the different features of water users and water sources, the concepts and calculation methods of water users uniform coefficient and water sources supplying coefficient are presented, which is embodied as a restriction condition. The large-scale multi-objective optimization model of regional water resources is set up, with a maximum objective of integrated benefit of society, economy and environment. On the basis of analyzing characteristics of large-scale, multi-objective, nonlinear of the allocation model and their concerning solution, which can enhance the theory research of large-scale multi-objective optimization and expand the new applicant fields of GA.(2) The optimal allocation model of water resources of nanyang City is established.And the parameters and coefficients are decided on the basis of water situations of two planning standard years and three probabilities of assurance. The multi-objective collectivity optimization of SA-GA hybrid algorithms is concretely constructed and used to solve the optimization model. A computer program is made and debugged to validate the real applicability of GA to the water resources optimization. The output results of the optimization model are analyzed and the reasons of water shortage of nanyang City are pointed out, and some measures to water shortage are also given. It proved that the model is relatively reasonable, and solution is relatively effective.