标题：Hydro-mechanical coupling analyses of cofferdam stability of Taian pumped storage power station
作者：Li, SC; Li, SC; Chen, WH; Zhu, WS; Zhang, L; Chau, KT
作者机构：[Li, SC; Li, SC; Chen, WH; Zhu, WS; Zhang, L; Chau, KT]Shandong Univ, Inst Rock & Soil Mech, Jinan 250061, Peoples R China.;[Li, SC; Li, S 更多
会议名称：5th International Conference on Fracture and Strength of Solids/2nd International Conference on Physics and Chemistry of Fracture and Failure Prevention
会议日期：OCT 20-22, 2003
来源：ADVANCES IN FRACTURE AND FAILURE PREVENTION, PTS 1 AND 2
关键词：unsaturated flow; hydro-mechanical coupling; FLAC; cofferdam
摘要：Three-dimensional hydro-mechanical coupling analyses have been conducted on the water-tight structure of the cofferdam for both intake and outlet of Taian pumped storage power station, located in Shandong Province of China. In addition, the effects of excavation on the cofferdam and foundation slopes were also studied by using the 3D FLAC. The calculation results show that the central core of high-pressure grouting has a prefect anti-seepage effect and therefore is able to strengthen the stability of the cofferdam and foundation slopes. The excavation process has only some local effects on the cofferdam and does not greatly affect the global stability of the cofferdam. Therefore, no failure takes place around slope toes. The results show that the width of platform left on the excavation side is reasonable.