Stress and Deformation Analysis for the Concrete Face Rockfill Dam of Wuyue Pumped Storage Power Station

Wuyue pumped storage power station will be built in Guangshan county, Henan province of China. The upper reservoir dam of the power station is a concrete face rockfill dam, which is more than 130m high. With complex arrangement, the axis of dam consists several straight lines and arc lines. Moreover, the geological condition of the foundation is very poor, and the topographic relief is terrible and irregular. With consideration of the engineering characteristics and geological conditions, the 3-D finite element model is built, including the dam body, the dam foundation and the backfill area of the reservoir. The dam filling and water storage process are simulated, and the stress and deformation analysis of the dam and the backfill area of the reservoir are taken both after the completion and during the operating period. Furthermore, the stress deformation distribution of the concrete face is studied in details, as well as the deformation distribution of the slab joints and peripheral joints. What's more, the rationality of the dam partition and the design parameters of the dam materials are demonstrated, and the optimization methods of the dam partition and connection slab are thus put forwards.