Study on the reservoir dam slope stability considering the effect of seepage

Water conservancy dam plays a significant role in flood control, power generation, shipping, irrigation, aquaculture, tourism, urban water supply and so on. The stability of the dam is extremely important in the engineering design and research processes. Based on the basic principles of finite difference and strength reduction methods, the software of FLAC3D is adopted to analyze the stability of the dam, considering the seepage state, the reservoir water level height and the seepage coefficient of the dam body. The results show that with the increase of the reservoir water level, the seepage behavior of the dam body is more obvious, and the horizontal displacement of the dam increases, while the dam slip safety factor is reduced. With the increase of the seepage coefficient of the dam body, the seepage discharge at the dam foot increases linearly, and the stability of the dam body decreases obviously. The seepage of dam foundation and dam slope stability is evaluated in this research. It is found that the reservoir water level and the dam body permeability are the important factors affecting the dam slope stability, so it is necessary to enhance the anti-seepage measures during the dam design and construction.