不同模式雨水调蓄池与低影响开发组合对雨洪控制的效果

摘要：随着雨涝灾害出现的频率越来越高，雨水调蓄池和LID措施的应用也越来越多。选择QD市某片区为研究对象，基于地理信息系统ArcGIS和SWMM(storm water management model)模拟雨水系统探究集中式调蓄池、分散式调蓄池及其与LID（low impact evelopment）措施联用后的水力状况,结果表明，分散式小体积雨水调蓄池相对于集中式大体积雨水调蓄池而言，不但可以有效削减洪峰流量，有效缓解上游节点压力，减小溢流量；同时对于管径过小引起的溢流能较好的缓解，也解决了大块建设土地紧缺的问题，控制雨水洪流的效果更全面更有效；LID措施 + 雨水调蓄池的组合措施能有效削减径流峰值、径流总量且可削减调蓄池容积，减小占地。

Study on the Control Effect of Rainwater Storage Pools with Different Modes on Rainwater Flood

Abstract: With the increasing frequency of flood disasters, the application of stormwater detention tank and LID measures is increasing. Take the rainwater pipe system in one area of a coastal city as an example., the SWMM model is used to simulate the rainwater system to increase the hydraulic status of the centralized or decentralized stormwater detention tank and the stormwater detention tank combined with the LID measures. The results show that the stormwater detention tank can directly play a role in reducing the design flow of the downstream pipe section, effectively improving the design return period of the regional drainage system; for the goal of comprehensively controlling the storm water torrent, small volume, decentralized multi-tone The reservoir mode is more effective than the large-volume, centralized monotonic storage mode; the LID + stormwater detention tank measures have a significant reduction in total runoff and runoff peaks and can effectively reduce the volume of the storage tank and reduce the land occupation.