LID设施布局对城市径流与污染负荷影响评估  

Assessment of the Impact of LID Facility Layout on Urban Runoff and Pollution Loads

作　　者：窦明[1] 闫佳佳[1] 王偲[2] 关健 李桂秋[1] 侯进进 DOU Ming;YAN Jiajia;WANG Cai;GUAN Jian;LI Guiqiu;HOU Jinjin(School of Ecology and Environment,Zhengzhou University,Zhengzhou 450001,China;Nantong Branch,Jiangsu Province Hy-drology and Water Resources Investigation Bureau,Nantong 226006,China;Institute of Natural Resources Monitoring and Compre-hensive Land Improvement of Henan Province,Zhengzhou 450018,China;Changjiang Water Resources Commission of the Ministry of Water Resources,Changjiang River Scientific Research Institute,Wuhan 430012,China)

机构地区：[1]郑州大学生态与环境学院,河南郑州450001 [2]江苏省水文水资源勘测局南通分局,江苏南通226006 [3]河南省自然资源监测和国土整治院,河南郑州450018 [4]水利部长江水利委员会长江科学院,湖北武汉430012

出　　处：《郑州大学学报（工学版）》2024年第4期87-94,共8页Journal of Zhengzhou University（Engineering Science）

基　　金：河南省高等学校重点科研项目(21A570008);河南省科技攻关项目(222102320211)。

摘　　要：关于低影响开发(LID)空间布局对水量水质控制效果影响的研究较为缺乏。针对上述问题,以郑州市中原区为对象,基于SWMM模型原理构建布设LID设施的研究区城市水量水质模型。所提模型依据城市综合径流系数的经验值以及研究区实际情况,将中原区划分为城市建筑高、中、低密集区,并在研究区高、中、低密集子汇水区布设不同比例的LID设施(S1~S5),计算不同雨量级别下不同空间格局下的LID设施对水量水质的控制效果。结果表明:随着雨量级别的增大,LID方案的径流总量削减率、峰值流量削减率和TSS负荷削减率不断减小。在降雨级别为暴雨、大雨和中雨时,在高、中、低密集子汇水区布设占比分别为35%、35%和30%的LID方案(S5),其径流总量削减率超过80%,峰值流量削减率超过70%,且TSS负荷削减率超过50%。从各事件下水量与水质综合指标评估来看,该方案表现最佳。In view of the lack of studies on the impact of low impact development(LID)spatial layout on the con-trol effect of water quantity and quality,Zhongyuan District of Zhengzhou City as a target area,its urban water quantity and quality model with LID facilities was built based on SWMM model principle.Based on the empirical value of urban comprehensive runoff coefficient and the actual situation of the area,Zhongyuan District was divided into high,medium and low-density areas of urban buildings,and different proportions of LID(S1-S5)were de-ployed in the high,medium and low-density urban areas,and the control effect of different spatial patterns of LID facilities on water quantity and quality under different rainfall levels was calculated.The results showed that with the increase of rainfall level,the total runoff reduction rate,peak flow reduction rate and TSS load reduction rate of LID scheme continued to decrease.When rainfall levels were rainstorm,heavy rain and moderate rain,LID scheme(S5)with a proportion of 35%,35%and 30%were deployed in high,medium and low dense urban areas,and the total runoff reduction rate exceeded 80%,the peak flow reduction rate exceeded 70%,and the TSS load reduc-tion rate exceeded 50%.From the comprehensive index evaluation of water quantity and water quality in each e-vent,the program had the best performance.

关 键 词：SWMM模型 LID设施空间布局 径流总量削减率 管段超载 TSS负荷削减率 

分 类 号：X321[环境科学与工程—环境工程]