Fujian Province is an area frequently prone to sudden geological disasters caused by typhoons and rain-storms.In order to analyze the impacts of rainfall infiltration on the stability of typhoon-storm-type landslides,this work took the landslide in Houting Village,Mukou Township,Yongtai County as an example.GeoStudio was adopted to de-velop numerical models of saturated-unsaturated seepage in landslides.The changes in pore water pressure contours and stability coefficients of landslides during rainfall were then analyzed.At the same time,the landslide monitoring data were also analyzed.The research results show that during heavy rainfall,short-term water stagnation will occur in weakly permeable strata,causing the groundwater level to rise and adversely affecting the stability of the slope.Heavy rainfall will quickly reduce the landslide safety factor.After a dry-wet cycle,the landslide safety factor is reduced by 0.1.After multiple rainfall cycles,the safety factor may be lower than 1.0.The measured monthly cumulative dis-placement of the landslide is small,and the slope is currently relatively stable,but the overall surface displacement shows a steady growth trend,and monitoring should be strengthened in the future.
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