基于双层模型的常熟市水资源配置研究

基于水资源优化配置原则,开发出以经济效益为上层目标、以环境效益为下层目标的双层优化模型。通过lingo软件和模糊满意度算法将多目标问题转化为单目标问题求解,对常熟市水资源进行配置。结果表明:2020、2030年区域水资源配置系统经济效益预期分别为24.84×10~8、27.89×10~8元,COD排放量分别为8 342、9 450 t,配水量将分别达到86 228×10~4、93 809×10~4m~3;其中,长江取水占配水总量73%,并且趋势逐渐升高。对比双层优化结果与两个单目标优化结果,可以对决策者提供不同情景下的优化方案。

Study on water resources allocation in Changshu City based on bi-level model

Based on the principle of optimal allocation of water resources, a bi level optimization model was developed, which take the economic benefit as the upper level objective and the environmental benefits as the lower level objective. Using the lingo software and fuzzy satisfaction approach, the multi objective problem was transformed into a single objective problem, and the water resources of Changshu city were configured. The results show that the economic benefits of the regional water resources allocation system would amount to 24.84×10⁸ and 27.89×10⁸ yuan, the total water resources distribution would achieve 86228×10⁴ and 93809×10⁴ m³, and COD emissions would reach 8342 and 9450 t in 2020 and 2030, respectively. Moreover, the Yangtze River water intake accounted for 73% of the total water distribution, and the trend gradually increased. Comparing the bi level optimization results with the two main objective optimization results can provide the decision making plans under different scenarios.