摘要
为了评估陕西省咸阳市主城区的排水系统能力和内涝风险,基于InfoWorks ICM模型建立了咸阳市主城区一维、二维耦合水动力学模型,对排水系统现状进行评估,并使用英国洪涝灾害指数评价体系对内涝风险进行评估。结果表明:咸阳市主城区采用平篦雨水口,覆盖程度满足设计要求,但是雨水口存在破损、移位及淤堵等问题,且部分排雨管道被严重堵塞,整体管道达标率较低;现状排水管网管径较小,在4种降雨强度(设计重现期为0.5、1、3、5年)的模拟中,排水能力小于0.5年一遇、0.5~1年一遇、1~3年一遇、3~5年一遇和大于5年一遇的管网所占比例分别为68.9%、5.8%、3.9%、5.3%和16.1%;人民路-东风路-渭河-咸通路围成的地块和东风路—河堤路—福银高速公路—金旭路围成的地块为内涝高风险区域。
In order to evaluate the drainage system capability and waterlogging risk of the main urban area in Xianyang city,Shaanxi province,one-dimensional and two-dimensional coupled hydrodynamic models of the main urban area were settled based on InfoWorks ICM model to test the current situation of drainage system,and waterlogging risk was evaluated by the flood disaster index assessment indicators of UK.The results show that the main urban area of Xianyang city adopts the flat grate rainwater inlet,and the coverage degree is satisfied with the design requirement,but the problems such as damage,displacement and silting still exist,and some pipes are seriously clogged,resulting in lower compliance rate of pipes;the diameter of current drainage pipe network is small,so that in the simulation of 4 rainfall intensities(design storm frequencies are 0.5,1,3 and 5 years),the proportions of pipe networks with drainage capacity of once less than 0.5 year,once 0.5-1.0 years,once 1-3 years,once 3-5 years and once more than 5 years are 68.9%,5.8%,3.9%,5.3%and 16.1%,respectively;the areas surrounded by Renmin road-Dongfeng road-Weihe-Xiantong road and Dongfeng road-Hedi road-Fuyin expressway-Jinxu road in the main urban area of Xianyang city are high waterlogging risk.
作者
吴彦成
丁祥
杨利伟
张乾
WU Yan-cheng;DING Xiang;YANG Li-wei;ZHANG Qian(Infrastructure Projects Office,Chang'an University,Xi'an 710064,Shaanxi,China;School of Civil Engineering,Chang'an University,Xi'an 710061,Shaanxi,China;Tongji Architectural Design(Group)Co.,Ltd.,Shanghai 200092,China)
出处
《地球科学与环境学报》
CAS
北大核心
2020年第4期552-559,共8页
Journal of Earth Sciences and Environment
基金
国家重点研发计划项目(2018YFE0103800)。
