低影响开发组合措施(LIDs)-调蓄泵站联合削减城市径流效果——以河北省某县主城区为例  

Effect of LIDs-storage Pumping Station on Urban Runoff Reduction-A Case Study of One County in Hebei Province,China

作　　者：李花月 张翔 徐欢 崔朝阳 栾清华[4,5] LI Hua-yue;ZHANG Xiang;XU Huan;CUI Zhao-yang;LUAN Qing-hua(College of Hydrology and Water Resources,Hohai University,Nanjing 210098,Jiangsu,China;Institute of Environmental Engineering Design,NORENDAR International Ltd.,Shijiazhuang 050011,Hebei,China;Hebei Key Laboratory of Intelligent Water Conservancy,Hebei University of Engineering,Handan 056038,Hebei,China;College of Agricultural Science and Engineering,Hohai University,Nanjing 211100,Jiangsu,China;Key Laboratory of Flood Disaster Prevention and Control of Ministry of Emergency Management,Hohai University,Nanjing 210024,Jiangsu,China)

机构地区：[1]河海大学水文与水资源学院,江苏南京210098 [2]北方工程设计研究院有限公司环境工程设计研究院,河北石家庄050011 [3]河北工程大学河北省智慧水利重点实验室,河北邯郸056038 [4]河海大学农业科学与工程学院,江苏南京211100 [5]河海大学洪涝灾害风险预警与防控应急管理部重点实验室,江苏南京210024

出　　处：《地球科学与环境学报》2023年第4期978-990,共13页Journal of Earth Sciences and Environment

基　　金：江苏省研究生科研与实践创新计划项目(SJCX22_0182);河北省重点研发计划项目(20375401D);国家自然科学基金项目(51809078)。

摘　　要：采用低影响开发(LID)和泵站等措施有效控制雨洪是治理城市内涝的重要手段。为探究低影响开发和泵站联合削减山丘城区的暴雨径流洪峰效果,构建了河北省某县主城区的SWMM模型。选用渗透铺装-下凹式绿地-雨水桶的低影响开发组合措施(LIDs),并考虑区域上、下游关系联用调蓄泵站布局设计了6种不同的布设方案,并就径流系数及其削减率、出口断面径流峰值及其削减率、峰现时间开展了研究。结果表明:在区域上游、下游及全域布设LIDs方案,虽然能有效控制径流系数和出口断面径流峰值,但是其峰现时间滞后效果并不显著,下游管网排水能力不足的问题也没有完全解决;联合布设LIDs及调蓄泵站后,上游、下游及全域布设方案下的出口断面径流峰值均得到显著削减,最大削减率分别为23.22%、42.88%和44.07%,同时峰现时间可滞后29~187 min。通过对比分析各方案的出口断面径流峰值削减率和峰现时间,最终优选得出下游布设LIDs和调蓄泵站联用方案综合效益最佳。Effective retention and interception of storm through Low Impact Development(LID)and pumping station are critical for urban waterlogging reduction.Six schemes were designed based on the spatial layout of relationships between upstream and downstream through permeable pavement,sunken greenbelt and rain barrel,and the couplings of LIDs and storage pumping station to assess the effect of runoff control of couplings of LIDs and storage pumping station in one country,Hebei province;the runoff coefficient,outflow peak and peak time in different scenarios were simulated through SWMM;the corresponding reduction rates or delayed peak time were compared in different schemes.The results show that it is effective on runoff coefficient and total outflow peak through LIDs deployed in upstream,downstream and whole area.However,implementing LIDs merely is limited in delaying the peak time and drainage of runoff in downstream pipe network;the schemes of the coupling of LIDs and storage pumping station are remarkable in reducing peak outflow whose maximum reduction rates are 23.22%,42.88%,44.07%,and delaying its current time 29-187 min.By comparing and analyzing the corresponding reduction rate and peak time of each scheme,it is finally concluded that the combined scheme of laying LIDs and regulating storage pumping station in the downstream have the best comprehensive benefit.

关 键 词：海绵城市 城市内涝 低影响开发 SWMM模型 径流控制 上、下游关系 空间布局 方案优选 

分 类 号：TU992[建筑科学—市政工程]