透水砖和下凹式绿地对城市雨洪的影响  

Impacts of Permeable Brick and Sunken Lawn on Urban Stormwater

作　　者：晋存田[1] 赵树旗[1] 闫肖丽[2] 周玉文[1] 

机构地区：[1]北京工业大学建筑工程学院,北京100124 [2]北京工业大学应用数理学院,北京100124

出　　处：《中国给水排水》2010年第1期40-42,46,共4页China Water & Wastewater

摘　　要：为考察不同雨洪措施对防洪和增加雨洪资源利用量的贡献,采用城市暴雨雨水管理模型(SWMM),对北京某区域内铺设透水砖和采用下凹式绿地措施的排水管道主要断面洪峰流量的变化进行了计算分析。结果表明,铺设透水砖和采用下凹式绿地均可有效削减洪峰流量,减小径流系数,从而增加雨洪资源的利用量。但对于不同降雨频率的地区,下凹式绿地在降雨频率较大的地区,雨洪利用效果较好;透水砖则在降雨频率较小的地区,雨洪利用效果较好。该研究成果可以用来评价不同雨洪措施在不同降雨频率下对城市雨洪的利用效果,为防洪排涝工程提供了一定的技术支持。To investigate the contribution of different stormwater measures to increasing stormwater utilization, the stormwater management model （SWMM） was used to calculate and analyze the peak flow changes in the main pipe sections using permeable brick and sunken lawn in a district of Beijing. The re- suits show that the two measures can reduce the peak flow, decrease the runoff coefficient and increase the amount of stormwater utilized as resources. However, with respect to the areas with different rainfall frequency, the sunken lawn does well when the rainfall frequency is big, while permeable brick does well when the rainfall frequency is small. This research result can be used to evaluate the utilization effect of urban stormwater with different stormwater measures under different rainfall frequency and provide a technical support for flood control and drainage projects.

关 键 词：雨洪利用 暴雨雨水管理模型 透水砖 下凹式绿地 

分 类 号：TV213.9[水利工程—水文学及水资源]