基于FLAC 3D数值分析的福安白莲寺降雨型滑坡稳定性评价  

Stability Evaluation of Bailian Temple Landslide in Fu’an City Based on FLAC 3D

作　　者：兰腾达 Lan Tengda(Ningde Monitoring Center of Geological Environment,Ningde,352101)

机构地区：[1]宁德市地质环境监测中心,宁德352101

出　　处：《福建地质》2025年第1期61-68,共8页Geology of Fujian

摘　　要：以典型降雨诱发型滑坡为例,分析不同工况下滑坡稳定性演化规律,并采用FLAC 3D软件对极端降雨条件下边坡失稳破坏进行数值分析。通过现场调查、地质测绘和钻探勘探,查明白莲寺滑坡的变形特征,并定量分析了滑坡的演变过程。结果表明:白莲寺滑坡处于相对稳定状态,降雨是滑坡的诱发因素;暴雨工况下,滑坡的安全系数降低,处于不稳定状态,需在关键部位开展治理措施。a typical rainfall-induced landslide is used as an example to analyze the stability evolution of landslides under different working conditions.Numerical analysis of slope destabilization under extreme rainfall conditions is conducted using FLAC 3D software.Through on-site investigation,geological mapping,and borehole exploration,the deformation characteristics of the Bailian Temple landslide were identified,and the evolution of the landslide was quantitatively analyzed.The results indicate that:the Bailian Temple landslide is in a relatively stable state,with rainfall acting as the trigger for the disaster;under heavy rainfall conditions,the slope's safety factor decreases to 0.936,indicating an unstable state;treatment measures should be implemented in key areas.

关 键 词：白莲寺滑坡 成因机制 极限平衡法 数值模拟 福建福安 

分 类 号：P642.22[天文地球—工程地质学]