土工基础

土工基础 ›› 2025, Vol. 39 ›› Issue (6): 926-930.

• 专题论述 • 上一篇    下一篇

商南某古滑坡稳定性离散元模拟研究

刘枭伟1,2,罗瑞琪1,2,吴波波1,2,马秀如1,2,冯健雪1,2   

  1. （1.贵州民族大学 建筑工程学院，贵阳 550025；2.贵州省工程地质灾害防治工程研究中心,贵阳 550025）
  • 收稿日期:2023-11-28 修回日期:2023-12-13 出版日期:2025-12-31 发布日期:2026-01-31
  • 通讯作者: 冯健雪（1985-），男，博士，副教授，研究方向为软土地基固结沉降处理与变形控制。
  • 作者简介:刘枭伟（1998-），男，硕士研究生，研究方向为软土地基处理与地质灾害防治。
  • 基金资助:
    国家自然科学基金（No：52008124）；国家自然科学基金（No：52268054）

Discrete Element Simulation of Stability of an Ancient Landslide in Shangnan

LIU Xiaowei1,2, LUO Ruiqi1,2, WU Bobo1,2, MA Xiuru1,2, FENG Jianxue1,2   

  1. (1.School of Civil Engineering and Architecture, Guizhou Minzu University, Guiyang 550025；
    2.Engineering Geological Disaster Prevention Engineering Research Center of Guizhou Province, Guiyang 550025)
  • Received:2023-11-28 Revised:2023-12-13 Online:2025-12-31 Published:2026-01-31

摘要： 以商南某古滑坡工程为研究对象，采用离散元法建立二维数值模型，并对比分析不同时间位移、矢量、监测点及测量圆的数据。结果表明：滑坡碎石堆积层和碎石层强度较低，滑坡坡面较陡，碎石堆积层首先从坡脚发生滑动，而后部颗粒由于失去前部颗粒的支撑，也发生了一定的向下滑动，因此整个碎石堆积层发生整体滑动。碎石层由于强度较低，在碎石堆积层的带动下也发生部分滑动，滑动带出现在碎石堆积层与碎石层的交界面，其它三层由于强度较大未发生滑动。基于上述分析，建议对滑坡采取一定的支护措施以保证工程施工过程中的安全性。


关键词: 滑坡, 离散元, 整体滑动

Abstract: An ancient landslide in Shangnan is studied in this paper. A twodimensional numerical model is established by using the discrete element method. The data of displacement, vector, monitoring point and measurement circle at different time are compared and analyzed. The results show that the strength of landslide rubble deposit and gravel layer is low, and the landslide slope is steep. The rubble deposit first slides from the toe of the slope, and the rear particles also slide downward to a certain extent due to the loss of the support of the front particles, so the entire rubble deposit slides. The gravel layer also partially slides under the drive of the gravel accumulation layer due to its low strength. The sliding zone appears at the interface between the gravel accumulation layer and the gravel layer, while the other three layers do not slide due to their high strength. Based on the above analysis, it is suggested that support measures should be taken for landslide to ensure the safety of engineering construction.

Key words: Landslide, Discrete Element, Overall Sliding

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