基于结构面控制的降雨诱发露天矿滑坡动态分析
陈建楠,安鹏举,王昌硕,顾 岩,陈雷鸿,严佳佳,叶伟涛,卢 佳.基于结构面控制的降雨诱发露天矿滑坡动态分析[J].宁波大学学报(理工版),2026,39(3):31-44.DOI:10.20098/j.cnki.1001-5132.2025.1013
CHEN Jiannan,AN Pengju,WANG Changshuo,GU Yan,CHEN Leihong,YAN Jiajia,YE Weitao,LU Jia.Dynamic analysis of rainfall-induced landslides in open-pit mines based on structural plane control
[J].Journal of Ningbo University(Natural Science & Engineering Edition),2026,39(3):31-44.DOI:10.20098/j.cnki.1001-5132.2025.1013
| Title: | Dynamic analysis of rainfall-induced landslides in open-pit mines based on structural plane control |
| 作者: | 陈建楠, 安鹏举, 王昌硕, 顾 岩, 陈雷鸿, 严佳佳, 叶伟涛, 卢 佳 |
| Author(s): | CHEN Jiannan, AN Pengju, WANG Changshuo, GU Yan, CHEN Leihong, YAN Jiajia, YE Weitao, LU Jia |
| 关键词: | “五盟8·10”滑坡; 结构面; 离散裂隙网络; 三维离散元; 运动特征; Wumeng 8·10 landslide |
| Keywords: | structural planes; discrete fracture network; three-dimensional discrete element; motion characteristics |
| 分类号: | P642.22 |
| DOI: | 10.20098/j.cnki.1001-5132.2025.1013 |
| 文献标识码: | A |
| 摘要: | 揭示受不连续结构面控制的岩质滑坡动力学机制对灾害风险评估具有重要意义，但其研究面临野外数据精确获取和数值模型真实构建的双重挑战。以宁波“五盟8·10”露天矿滑坡为例，构建了融合无人机摄影测量、数字露头模型分析、离散裂隙网络和三维离散元模拟的集成分析框架。结果表明，强降雨沿三组优势节理J1（286°∠79°）、J2（23°∠58°）和J3（314°∠52°）渗入，形成的静水压力是滑塌发生的主要诱因。模拟再现了滑坡启动、加速、堆积和零星崩塌四个阶段，揭示节理网络不仅控制岩体破碎程度和块体尺寸分布，还主导了滑坡的差异化运动模式，最终形成扇形堆积体。 |
| Abstract: | It is important for disaster risk assessment by understanding the dynamic mechanism of rock landslides controlled by discontinuous structural planes. However, there remain some challenges due to the difficulties in accurate field data acquisition and realistic numerical modeling. Taking the “Wumeng 8·10” open-pit mine landslide in Ningbo as a case study, this paper established an integrated framework combining UAV photogrammetry, digital outcrop model analysis, discrete fracture network modeling, and three-dimensional discrete element simulation. The results show that heavy rainfall infiltrated along three dominant joint sets, J1 (286°∠79°), J2 (23°∠58°), and J3 (314°∠52°), and the resulting hydrostatic pressure was the main trigger of failure. The simulation reproduced four stages of landslide movement—initiation, acceleration, accumulation, and sporadic collapse—and revealed that, the joint network controlled not only rock fragmentation and block size distribution, but also the movement patterns, ultimately forming a fan-shaped deposit. |
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| 备注/Memo: | 收稿日期：2025-10-28 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ 基金项目：国家自然科学基金（42407209） 第一作者：陈建楠，硕士研究生，主要研究方向为岩土工程。E-mail: chenjiannan2000@126.com *通信作者：安鹏举，助理研究员，主要研究方向为岩土工程。E-mail: anpengju@nbu.edu.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
