Department of Architecture and Civil Engineering, Lyuliang University
College of Environmental Science and Engineering, Taiyuan University of Technology
Shanxi Jiaoke Highway Survey and Design Institute Co., Ltd.
Shanxi Traffic Technology Research and Development Co., Ltd.
Shanxi Municipal Engineering Graduate Education Innovation Center
Shanxi Dadi Environment Investment Holdings Co., Ltd

【目的】为有效减轻极端暴雨天气造成的城市洪涝问题,开展了对城市雨水排水系统(USDS)中雨水调蓄池(SST)的选址及数量优化的研究。【方法】采用博弈论(GT)思想将层次分析法(AHP)获得的主观权重与改进熵值法(IEVM)获得的客观权重组合赋权,并与灰色关联分析(GRA)和逼近理想解排序(TOPSIS)相结合,建立了城市内涝与面源污染风险的定量评估框架。根据各节点的相对接近度确定风险等级,风险较高的节点设置SST,根据积水削减率和总悬浮物(TSS)削减率优化SST的数量。以山西省长治市为例,探讨了该方法在不同降雨重现期时城市内涝和面源污染的控制效果。【结果】GRA-TOPSIS法在5a和10a降雨重现期时的综合变异系数分别为0.355和0.361,极值均为0.496,均高于单独GRA或TOPSIS.【结论】GT赋权并耦合GRA-TOPSIS的优化方法采用较少的经济投资可较好地消除城市内涝和面源污染风险,为SST的选址和数量优化提供了新思路。

【Purposes】 In order to effectively alleviate the urban flood caused by extreme rain- storm weather, the site selection and quantity optimization of rainwater storage tanks (SST) in urban rainwater drainage system were investigated. 【Methods】 Game theory (GT) was used to combine the subjective weights obtained by the analytic hierarchy process with the objective weights obtained by the improved entropy value method. Furthermore, the grey relevance analy- sis (GRA) and technique for order preference by similarity to ideal solution (TOPSIS) were com- bined to establish a quantitative assessment framework for urban waterlogging and non-point source pollution risks. The risk level was determined according to the relative proximity of each node, and SST was set for the node with higher risks. The number of SST was then optimized according to the reduction rates of stagnant water and total suspended solids. With Changzhi Cit- y, Shanxi province as an example, the control effect of this method on urban waterlogging and non-point source pollution under different rainfall return periods was discussed. 【Findings】 The results show that at a and a rainfall return periods, the comprehensive coefficients of varia- tion of GRA-TOPSIS method are 0.355 and 0.361, respectively, and the extreme values are both 0.496, higher than that of GRA or TOPSIS alone. 【Conclusions】 Optimization method of GT weighting and coupling GRA-TOPSIS can better eliminate the risk of urban waterlogging and non-point source pollution with less economic investment, and provide a new thought for SST lo- cation and quantity optimization.

山西省自然科学基金面上项目(202203021221060);山西省研究生教育创新项目(2023KY254)

李红艳,张翀,郝景开,等.GT-GRA-TOPSIS在雨水调蓄池选址及数量优化中的应用[J].太原理工大学学报,2024,55(5):832-840.

LI Hongyan,ZHANG Chong,HAO Jingkai,et al.Application of GT-GRA-TOPSIS in location selection and quantity optimization of rainwater storage tank[J].Journal of Taiyuan University of Technology,2024,55(5):832-840.