论文部分内容阅读
城市内涝问题进一步突显了城市水文循环研究的重要性。基于地表建筑、地下管道、雨水工程等资料,基于SWMM建立了清华大学校园雨洪模拟模型,根据2015年5月10日和2012年7月21日两场降雨事件的实测资料,进行了清华大学校园水文过程精细模拟,用道路积水深度率定验证模型。模拟结果表明:(1)集水区下垫面透水性强弱不同时,产流过程仍十分相似,最大洪峰发生时间相同;(2)绿化带削减洪量的作用显著,不透水面积越大的地方越容易发生街道积水;(3)道路水深对降雨强度响应敏感,低强度降雨事件中,道路积水表现出0.5~1h的滞后。
The issue of urban waterlogging further highlights the importance of urban hydrological cycle research. Based on the data of surface buildings, underground pipelines and rainwater projects, a simulation model of Tsinghua University campus stormwater was established based on SWMM. According to the measured data of two rainfall events on May 10, 2015 and July 21, 2012, Tsinghua University Campus Hydrological process simulation, using road water depth rate validation model. The simulation results show that: (1) When the permeability of the underlying surface of catchment is different, the process of runoff generation is still very similar and the maximum peak occurrence time is the same; (2) The role of green belt in reducing flooding is significant, and the larger the impervious area (3) The water depth of the road is sensitive to the rainfall intensity, and in the low-intensity rainfall event, the waterlogging in the road shows a lag of 0.5 to 1 hour.