库水位下降的饱和-非饱和土坝渗流数值模拟

Based on the theory of seepage in unsaturated soil, the infinite numerical simulation software named Geo-slope was adopted, to simulate the earth dam during the descent of reservoir water level. The analysis results were obtained, including the pore water pressure, the position and configuration of seepage line, etc. Compared with the results calculated under saturated state, difference such as the height and the configuration of seepage line existed between each other, also, the stability factor calculated of each other were not the same, the former was lower than the later during the descent of reservoir water level, but the later was lower than the former when the reservoir water level achieved stability for one year.