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Analysis and reflection on ponding of underpress expressway based on models of runoff flow and flood
Author(s): 
Pages: 41-45
Year: Issue:  12
Journal: Water & Wastewater Engineering

Keyword:  Underpress expresswayLoggingModelRunoff flowFlood;
Abstract: 为了查明北京2012年“7.21”暴雨中严重积水的京港澳高速南岗洼路段的致灾原因并提出解决对策,在分析当地水文情况的基础上建立了该地区的降雨—径流—洪泛—积水数学模型.分析和模拟结果表明,当日南岗洼路段积水主要源于外流域洪水泛滥,其次为本地区及路面涝水.但即使不考虑外流域洪水影响,该路段本身的防洪排水系统也无法在“7.21”暴雨中保障下洼路段安全.建议对于类似低洼地区的下穿式公路,其防洪排涝工程需统筹考虑外洪、内涝、自产流诸多因素的相互影响,采取阻蓄抽排多种手段保障安全.
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