Hydro-Mechanical Coupling Analyses of Cofferdam Stability of Taian Pumped Storage Power Station

Abstract:

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.

• Periodical: Key Engineering Materials (Volumes 261-263)
• Pages: 1545-1550
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.261-263.1545
• Online since: April 2004
• Authors: Shu Cai Li, Shu Chen Li, Wei Shen Zhu, Wei Zhong Chen, Le Wen Zhang, K.T. Chau
• Keywords: Cofferdam, Fast Lagrangian Analysis of Continua (FLAC), Hydro-Mechanical Coupling, Unsaturated Flow

References

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