基于FLAC3D对复合型坝接合部位的力学分析

he mixed dam have been applied widely in practice because it possesses the respective advantage of every dams. There must be the lankiness between the two dams and the mechanics characteristic in the joint position related to the whol safety of the mixed dam. In this paper, The machanics characteristic of the main dam of TuoKou Hydro-electric power station in Hunan Hongjiang，just as a mixed dam, have been studied by Flac 3D.It is showed that there were relative slippage but no crack between the interface of joint position, and it is stable of the joint position. Optimization design of the mixed dam is feasible based on this employment, it can be calculated in accordance with practical engineering analysis concluded layout monitoring facilities.