院基寺水库新设取水口工程运行对溢洪道影响研究

Research on the Influence of New Water Intake Project on the Spillway of Yuanjisi Reservoir

武汉市北部黄陂区前川城区因城市发展需要,拟在院基寺水库增设取水口。由于工程选址在水库溢洪道附近,为分析取水口建成运行对溢洪道的影响,分别从工程建设前后溢洪道泄流能力变化和工程运行时溢洪道边坡渗流稳定两个方面进行研究,采用Flow3D软件对工程建设前后不同泄流工况的流场进行建模并对比分析,应用Geostudio软件选取2处不利断面进行了边坡渗流稳定分析,结果表明工程建设前后溢洪道泄流流量变化小于1%且工程对泄流流场影响可忽略不计;若发生管道渗漏,溢洪道边坡最大水力坡降在规范允许范围内,且工程建设对溢洪道边坡渗流稳定影响较小,研究成果可供类似工程应用参考。

Due to the need of economic development, Qianchuan of Huangpi District, north of Wuhan City, a new water intake at Yuanjisi Reservoir is proposed because the site selection of the project is near the spillway of the built reservoir.In order to analyze the influence of water intake construction and operation on spillway, this paper discusses the change of spillway discharge capacity before and after construction and slope seepage stability respectively.Flow 3D software for modeling and comparative analysis of the flow field of different discharge conditions is used before and after engineering construction, and Geo studio software is used to select 2 adverse sections for modeling and seepage analysis.And the results show that the change of spillway discharge rate before and after construction is less than 1% and the influence of flow field can be ignored.Besides, if pipe leakage happened, the largest hydraulic slope of the spillway slope was within the allowable range of the code and construction has little influence on the stability of the spillway seepage.This paper can be used as a reference for similar engineering applications.