Stability Evaluation of Rainfall-induced Landslide in Wuqu Village of Shouning County,Fujian Province
Hilly slope landscapes are highly susceptible to landslide disasters under the influence of rainfall.This paper takes the landslide in Wuqu Village,Ningde City,as a research object,and analyzes the deformation characteristics and geological environment of the landslide through on-site displacement monitoring and drilling;respectively,it adopts the limit equilibrium theory and the FLAC 3D software to carry out the stability calculation,and then combines with the rainfall conditions to make a comprehensive evaluation of the landslide.The results show that the excavation at the foot of the slope leads to the decline of the overall stability of the slope,which is a necessary condition for the resurrection of the old landslide.Under the influence of rainfall,the rainwater seeps in along the fissure,and the setback of the trailing edge of the landslide expands gradually,which further weakened the stability of the landslide and accelerated the sliding.The simulation results show that the main landslide zone has obvious stress concentration phenomenon,which is prone to form a disaster under the influence of the external triggering factors,and there is a greater risk.The results of the study can be used as a reference basis for the design of landslide management in Wuqu Village,which can help to improve the disaster prevention and mitigation capabilities.
displacement monitoringlimit equilibriumnumerical simulationstability analysisWuqu Village landslideShouning County of Fujian
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