摘要
DG水电站右岸出露的F3断层纵贯坝址区上下游,延伸长,且断层带内有断层泥、岩屑等细颗粒物质,存在渗透问题。为获得高压水头作用下断层结构面的渗透特性、渗透稳定性及结构面张开压力的可靠数据,通过对F3断层带进行现场原位高压渗透试验,分析F3断层发生渗透破坏的水力坡降,总结出渗透破坏规律,为设计提出了渗透破坏允许水力坡降的建议值。
A long penetrating fault F3 is outcropped on the right bank of the DG hydropower station,which may lead to seepage problems due to the fine-grained materials such as fault mud and cuttings in the fault zone.To get reliable data of the seepage characteristics,seepage stability and opening pressure of the structural planes under high water pressures,in-situ high pressure permeability test is carried out in the F3 fault zone.The hydraulic gradient value when seepage failure occurs is determined.Then,the allowable hydraulic gradient value against seepage failure is recommended.
作者
张德强
孙兴伟
王敬勇
罗文
姜宏军
朱瑞晨
陈亮
ZHANG Deqiang;SUN Xingwei;WANG Jingyong;LUO Wen;JIANG Hongjun;ZHU Ruichen;CHEN Liang(Powerchina Huadong Engineering Co., Ltd., Hangzhou 311122, China;DG Hydropower Branch, Huadian Xizang Energy Co., Ltd., Shannan 856000, China)
出处
《水电与新能源》
2020年第11期12-19,共8页
Hydropower and New Energy
关键词
水电站
断层
高压渗透试验
渗透破坏
水力坡降
hydropower station
fault
high pressure permeability test
seepage failure
hydraulic gradient
