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以SWMM为基础,选取北京市典型小区,计算不同频率设计暴雨下小区排水效果以及积水、道路坡面流等情况,同时进行不同情景下的暴雨洪水模拟并评价其影响,包括改凸式绿地为平式和凹式、设置蓄洪区等。模拟计算的结果显示,以上3种方式对入渗、径流、洪峰流量、坡面流等均有较大影响,作为城市防洪排水的重要辅助措施,可以极大地缓解排水管道压力,同时削减洪峰、增加入渗。
Abstract:Based on SWMM(Storm Water Management Model), a typical urban region is selected to calculate the status under the design storms with different frequencies in the region, such as drainage effect and water-logging, overland flow on road etc.,and simultaneously, the storm floods under different conditions, including reforming the protruding green belts into plain or concave ones, placing flood storage areas etc.,are simulated with the evaluation on their effects. The simulative calculation results show that all the three measures mentioned herein have larger effects on the infiltration, runoff, flood peak flow and overland flow and can greatly alleviate the pressure of the draining pipeline, clip the flood peak and increase the infiltration as well, if they are taken as the additional important measures of urban drainage for flood control.
[1]北京市2004年城市暴雨洪水实录与分析[R].北京:北京市水利规划设计研究院.2005.
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[3]Stormwatermanagementmodeluser’smanual.Version5.0[Z].Nationalriskmanagementresearchlaboratory.Officeofresearch anddevelopment.U.S.EnvironmentalProtectionAgency.2005.
[4]城区绿地雨洪利用技术及土壤净化作用研究技术报告[R].北京:清华大学水利水电工程系,2004.
[5]北京市水文手册第一分册暴雨图集[Z].北京市水利局,1999.
基本信息:
中图分类号:P333.2
引用信息:
[1]丛翔宇,倪广恒,惠士博,等.基于SWMM的北京市典型城区暴雨洪水模拟分析[J].水利水电技术,2006(04):64-67.
2006-04-20
2006-04-20