摘要
在水库的各种病险灾害中,最主要、最常见的是坝体或者库岸渗漏现象,因此,选择最佳的防渗加固方案是水利工程除险工作的重点。某水库的坝体渗流量在正常蓄水位下大约为580×104m3/a,高水位运行过程中坝坡的出逸渗流的安全性不符合规范要求。为了确保坝体的防渗安全,加固处理坝体是防渗的关键措施。通过对某水库坝体渗流状况进行深入分析,对水库大坝防渗体垂直截渗技术、防渗轴线选择、防渗体加固等进行比选,确定最佳的防渗加固方案,同时在方案的设计实施过程中应用地下水渗流分析软件GeoStudio,选择坝体加固前后不同工况下进行渗流计算。研究结果显示,实施防渗加固方案后大坝浸润线显著降低,减少了渗漏量,具备良好的防渗效果,各项指标都可以满足设计的要求。
Among all kinds of dangerous disasters of reservoir,the leakage of dam body or bank is the most common.Therefore,the selection of the best anti-seepage reinforcement scheme is the key point in the risk removal of hydraulic engineering.Seepage flow of dam body of a reservoir is about 580 under normal water level.The safety of escape seepage of dam slope during operation of high water level does not meet the requirements of specifications.To ensure the safety of dam body against seepage,reinforcement and treatment of dam body is the key measure to prevent seepage.Through in-depth analysis of seepage condition of a reservoir dam body,this paper makes comparison and selection of seepage-proof body vertical interception technology,seepage-proof axis selection,seepage-proof body reinforcement and so on,and determines the best seepage-proof reinforcement scheme.Meanwhile,during the design and implementation of the scheme,the groundwater seepage analysis software GeoStudio is applied to calculate seepage under different conditions before and after dam reinforcement.The results show that after the implementation of anti-seepage reinforcement scheme,the dam wetting line is significantly reduced,the seepage volume is reduced,and the seepage prevention effect is good.All indexes can meet the design requirements.
作者
吕绍文
LV Shao-wen(Guangzhou Conghua Water Construction Center,Guangzhou 510900,China)
出处
《云南水力发电》
2022年第11期139-142,共4页
Yunnan Water Power
关键词
水库坝体
防渗加固
处理方案
比选研究
dam body of reservoir
anti-seepage reinforcement
treatment scheme
comparison and selection study
