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| 基金项目：江苏省科技计划专项资金（重点研发计划社会发展）项目“降雨型下蜀土滑坡野外足尺模型试验及监测预警技术研究与应用”（BE2023796） |
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| 摘要： |
| 无锡横山寺滑坡为苏南地区典型的含“白泥层”顺向岩质滑坡。通过对该区域“白泥层”取样测试，研究泥岩夹层的矿物成分、物理力学性质等工程特性，结果表明：“白泥层”抗风化能力差，饱和状态下抗剪强度明显劣化，是诱发该滑坡的核心内因。运用有限差分法软件FLAC3D，建立了含“白泥层”软弱夹层的岩质滑坡数值模型，对滑坡治理前后的稳定性开展数值模拟研究，结果表明：FLAC3D有限差分法对苏南含“白泥层”软弱夹层岩质滑坡的模拟效果良好，坡体变形破坏特征与实际发生情况吻合；该方法相较于其他数值模拟方法，能更好地兼顾坡体支护结构与围岩的相互作用，对工程滑坡治理效果评价更具指导意义。 |
| 关键词：岩质滑坡 软弱夹层 白泥层 数值模拟 有限差分法 FLAC3D 苏南 |
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| Abstract: |
| The Hengshan Temple landslide in Wuxi city is a typical consequent rock landslide containing soft ″white mud layer″ interbeds in southern Jiangsu. Based on samples and laboratory tests of this layer, the engineering properties of the mudstone interlayer, including its mineral composition and physical mechanical characteristics, were investigated. The results indicate that the ″white mud layer″ exhibits poor weathering resistance and undergoes significant degradation in shear strength under saturated conditions, which constitutes the primary internal factor triggering this landslide. A numerical model of the rock slope with the weak interlayer was established using the finite difference software FLAC3D to simulate its stability before and after reinforcement. The simulation demonstrates that the finite difference method implemented in FLAC3D effectively replicates the behavior of such landslides in southern Jiangsu, with deformation and failure patterns consistent with field observations. Furthermore, compared with other numerical simulation approaches, this method better accounts for the interaction between supporting structures and the surrounding rock mass, thereby providing a more reliable reference for evaluating the effectiveness of landslide remediation designs. |
| Keywords:rock landslide soft interlayer white mud layer numerical simulation finite difference method FLAC3D southern Jiangsu |
| 刘涛， 张振国， 王振海， 等.苏南含“白泥层”软弱夹层岩质滑坡稳定性分析[J].地质学刊,2026,50(1):66-74 |
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