Seepage Calculation and Analysis of Xinxiang Town Landslide under Rainfall Condition

摘要

The seepage process of Xinxiang Town landslide under typical rainfall condition was calculated and analyzed in this paper. The calculation results show that the rainfall can significantly raise the saturation line of landslide and form the saturated seepage zone with relatively large hydraulic gradient in the original unsaturated surface soil, and the landslide stability decreases consequently. A comprehensive evaluation of the landslide stability can also be done by combining with the calculation of strain and stress. Meanwhile, although retaining wall and other engineering measures can effectively enhance the landslide stability, the retaining wall may block the drainage channel due to the concentrated seepage water pressure. For this reason, it is important to ensure the engineering quality and the drainage measures at the same time.