摘要
闸坝地基渗漏已成为坝基防渗设施老化所表现的重要问题之一。当渗流量危害到闸基安全时,再进行后期闸基防渗处理的难度就非常大,所以在设计阶段应当充分考虑防渗设施的设置及其效果。以四川广元昭化水电站为例,采用有限单元法建立闸基渗流计算模型,计算分析闸基前置防渗墙在深度、厚度变化时闸基渗流量和渗流坡降的变化规律,评价不同尺寸情况下防渗墙的防渗效果,分析结果可用于指导闸基防渗措施设计,也可为类似闸基防渗措施选取提供参考。
The seepage of gate dam foundation has become one of the important issues caused by the aging of dam foundation seepage control facilities.When the seepage flow endangers the safety of gate foundation,it is very difficult to carry out the late anti-seepage treatment of gate foundation,so the setting and effects of seepage control facilities should be fully considered in the design stage.Taking Zhaohua Power Station in Guangyuan,Sichuan as an example,this paper establishes the seepage calculation model of gate foundation by finite element method,calculates and analyzes the change law of seepage flow and seepage slope of the gate foundation when the depth and thickness of the cut-off wall before the gate foundation change,and evaluates the seepage control effect of the cut-off wall with different sizes.The analysis results can provide reference for the design of seepage control measures for gate foundation and the selection of seepage control measures for similar gate foundation.
作者
刘健
付成华
王兴华
穆宵枭
刘庆彬
LIU Jian;FU Chenghua;WANG Xinghua;MU Xiaoxiao;LIU Qingbin(School of Energy and Power Engineering,Xihua University,Chengdu 610039,China)
出处
《人民珠江》
2020年第3期54-58,共5页
Pearl River
基金
西华大学研究生创新基金资助课题(ycjj2018042)
关键词
闸基
防渗墙
防渗效果
厚度
深度
gate foundation
cut-off wall
seepage control effect
thickness
depth
