某医院后山雨水调蓄池削减洪峰流量的效果研究  

Study on the effect of reducing peak flow by rainwater storage tank on the hill behind a hospital

作　　者：杜佐道 徐晓明 付朝晖 马骥 欧松松 刘楷操 Du Zuodao;Xu Xiaoming;Fu Zhao hui;Ma Ji;Ou Songsong;Liu Kai cao(Zhuhai Institute of Urban Pl anning&Design,Zhuhai 519001,China)

机构地区：[1]珠海市规划设计研究院

出　　处：《给水排水》2019年第12期86-89,共4页Water & Wastewater Engineering

摘　　要：为了降低某医院后山雨水调蓄池的设计水位并提高其洪峰流量削减率,采取了改变雨水调蓄池与渠道连接形式的措施,即由串联形式改建为并联形式的雨水调蓄池,并在数值模拟雨水调蓄池下游渠道的流量过程中,采取了调试溢流堰和渠道的宽度等参数,使储存渠道超额雨水的过程结束时,基本蓄满雨水调蓄池的方法。经计算,改建后的洪峰水位将降低3.585m以上、地面安全超高值由-1.616m提高到1.269m以上,洪峰流量削减率由16.01%提高到24.69%。虽然并联形式的雨水调蓄池具有提高洪峰流量削减率的优越性,但不能一概而论,如果设置溢流堰和配水渠的宽度等参数不当,也有可能造成洪峰流量削减率达不到预期的目标。In order to reduce the design water level and increase the peak discharge reduction rate of a rainwater storage tank on the hill behind a hospital,measures were taken to change the connection form between the rainwater storage pond and the channel,that is,to transform the series connection form into the parallel connection form of the rainwater storage pond.In the process of numerical simulation of the flow rate of the downstream channel of the rainwater storage pond,parameters such as adjusting the overflow weir and the width of the channel were also adopted.The method of filling the rainwater storage tank at the end of the process of storing excess rainwater in the channel.After reconstruction,the peak water level will be reduced by more than 3.585 m,the super high value of Ground safety will be increased from-1.616 mto more than 1.269 m,and the reduction rate of peak flow will be increased from 16.01%to 24.69%.Although the parallel rainwater storage tank has the advantage of improving the peak discharge reduction rate,it can not be generalized.If the parameters such as the width of overflow weir and distribution channel are not appropriate,it may also cause the peak discharge reduction rate to fall short of the expected target.

关 键 词：雨水调蓄池 超额雨水 洪峰流量削减率 溢流堰 并联形式 

分 类 号：TU992[建筑科学—市政工程]