北京市清河滨河道路下凹桥区积水风险评估  

Risk assessment of waterlogging at bridge underpasses of Qinghe riverside road in Beijing

作　　者：张岑 邸苏闯 龚应安 陆玉广 ZHANG Cen;DI Suchuang;GONG Ying’an;LU Yuguang(Beijng Water Science and Technology Institute,Beijing 100048;Beijing Key Laboratory of Urban Hydrological Cycle and Sponge City Technology,Beijing 100875;Department of Beijing East Water to West Administration,Beijing 100085)

机构地区：[1]北京市水科学技术研究院,北京100048 [2]城市水循环与海绵城市技术北京市重点实验室,北京100875 [3]北京市东水西调管理处,北京100085

出　　处：《中国防汛抗旱》2021年第7期12-16,30,共6页China Flood & Drought Management

基　　金：北京市科委课题项目(Z201100008220005);国家自然科学基金青年基金项目(51709272)。

摘　　要：近些年北京市城区暴雨内涝频发,清河滨河道路两侧下凹桥区遇汛期降雨极易形成积水,影响道路通行和流域防洪排涝安全。为评估清河滨河道路下凹桥区积水风险,研究了清河滨河道路17处下凹桥区积水原因,其中主要受降雨影响4处,其余13处主要受河道行洪影响;在考虑临界积水深度和下凹桥区排水能力等因素的基础上,划定了下凹桥区积水对应的临界雨量阈值,识别积水对应暴雨阈值超3年一遇(最大1 h降雨量42 mm)的下凹桥区8处,其余9处不足3年一遇。基于下凹桥区积水原因分析和临界雨量阈值分析成果,提出了典型下凹桥区积水防控应对措施,为城市暴雨积水防御工作提供了科学支撑。In recent years,there are frequent rainstorms and waterlogging in Beijing urban area.Bridge underpasses on both sides of Qinghe riverside road is prone to waterlogging during flood seasons,which affects road traffic and drainage safety.Ithis study identified 17 reasons for runoff ponding at bridge underpasses of Qinghe riverside road,of which 4 were mainly induced by rainfall,and the other 13 were mainly induced by river flood.On the basis of considering the critical depth of waterlogging and the drainage capacity of bridge underpasses,the critical rainfall threshold corresponding to waterlogging at bridge underpasse are defined,and 8 places with waterlogging corresponding to rainstorm threshold exceeding 3-year return period(the maximum hourly rainfall is 42 mm)are identified,and the remaining 9 places are less than 3-year return period.Based on the analysis results of the causes of waterlogging in the bridge underpasses and the critical rainfall threshold,this paper puts forward the countermeasures for the prevention and control of waterlogging at the typical bridge underpasses,which provides scientific support for the prevention and control of waterlogging.

关 键 词：清河 下凹桥 积水 风险评估 北京市 

分 类 号：TU998.4[建筑科学—市政工程]