基于等流时带的水资源大系统优化分配模型

Model for Optimal Water Resource Allocation of Large Scale System Based on Isochrones

针对供水部门与各用水部门之间水量传输的滞后性,提出了一种基于等流时带的流域水资源分配模型.将供需部门之间的时滞性用空间显示来表述,并利用大系统优化理论对该模型进行了求解.以黄河流域为背景,进行了实际应用,给出了黄河流域低用水的水资源分配方案.计算结果表明,兰州站每年11月至次年3月,流量从700m3/s到500m3/s均匀递减,三门峡水库1月至2月出流从500m3/s到300m3/s递减,可保证黄河流域不断流,满足生态需求,表明此法的可行性.

Aiming at the time lag between water supply departments and consumers, we proposed a method to establish the model for optimal water resource allocation based on isochrones. With this model, the time lag could be expressed by the spatial conversion and solved by large scale system theory. The method was utilized in the Yellow River. Results show that if the flow equably decreases from 700 m^3/s to 500 m^3/s from November to next March in Lanzhou station and the flow equally decreases from 500 m^3/s to 300 m^3/s from Jannuary to February in Sanmanxia reservoir, the Yellow River will not break and the ecological water demand can be met, which proves the feasibility of the method.