摘要
针对洞坪拱坝6#坝段坝基扬压力偏高的异常现象,综合坝踵建基面接缝变形、基岩变形、混凝土应力监测资料的分析成果,对其成因进行了研究。结果表明,引起扬压力偏高的原因是基础防渗帷幕局部存在缺陷。防渗帷幕经补强灌浆后,扬压水位显著下降,渗压系数已低于设计值,补强灌浆处理成功。
To address the exceptionally high uplift pressure of dam foundation at Dongping arch dam 6# section,this paper analyzed its causes by integrating fracture deformation of dam foundation surface heel,bedrock deformation and the analysis results of concrete stress monitoring data. The research shows that local flaw of foundation impervious curtain caused high uplift pressure. After the grouting reinforcement of impervious curtain, uplift water level decreased significantly and osmotic coefficient became lower than design value. The grouting reinforcement was successful.
出处
《浙江水利科技》
2016年第3期54-57,共4页
Zhejiang Hydrotechnics
关键词
洞坪拱坝
坝基扬压力
监测资料分析
防渗帷幕
补强灌浆
Dongping arch dam
dam foundation uplift pressure
monitoring data analysis
impervious curtain
grouting reinforcement
