摘要
详细阐述了湖北省寺坪水电站导流隧洞进口洞脸边坡变形破坏的地质条件、特征及成因。从地质角度对预应力锚索加固与削坡减载两种治理方案进行比较后,认为对该边坡进行治理适宜采用削坡减载方案,而不宜采用预应力锚索加固方案;并从实践中验证了采用削坡减载方案进行治理是成功的。该边坡为志留系页岩组成的隧洞洞脸边坡,位于特殊的地质环境及特殊的工程场所,其治理方案的地质论证对其它边坡的治理工程具有借鉴作用。
The geologic conditions, characteristics and causes about the deformation failure of the tunnel-face side slope of the diversion tunnel in Siping Hydropower Station in Hubei Province are discussed particularly. After comparison of two schemes, it is considered that the reasonable improvement scheme for the side slope is the scheme of reducing load by scaling, not is the scheme of the prestressed anchoring. The side slope is made up of the shales in silurian period and located in the special geologic environment and engineering situation. The geo- logic demonstration on the improvement scheme for the side slope can provide references for the other regulation projects of the side slope.
出处
《水利与建筑工程学报》
2006年第3期33-36,共4页
Journal of Water Resources and Architectural Engineering
关键词
洞脸边坡
页岩
变形破坏
治理方案
比较
tunnel-face side slope
shale
deformation failure
improvement scheme
compare
