基于CFD-DEM耦合的泥石流三维动力学特征及粒径效应

doi:10.3799/dqkx.2026.184

基于CFD-DEM耦合的泥石流三维动力学特征及粒径效应

doi: 10.3799/dqkx.2026.184

1. 石家庄铁道大学省部共建交通工程结构力学行为与系统安全国家重点实验室, 石家庄 050043;
2. 煤炭开采水资源保护与利用全国重点实验室北京低碳清洁能源研究院, 北京 102209

基金项目:

中国国家铁路集团有限公司研发项目(L2023G017)；河北省教育厅青年基金（50199990574）；河北省燕赵黄金台聚才计划（A2025022）；国铁重大项目（K2020G034）；国家自然科学基金项目（U2568213)；煤炭开采水资源保护与利用国家重点实验室年开放基金(NICE_RD_2025_111)；河北省自然科学杰出青年基金项目（E2024210019）；河北省高等学校基础研究重点培育专项（JZX2024011）

详细信息

作者简介:
吉东亮(1992—)，男，讲师，博士，研究方向为岩石力学。ORCID:0000-0002-5166-9789.E-mail:1065045422@qq.com

通讯作者:
袁维(1986—)，男，教授，博士，研究方向为工程地质灾害安全防控。ORCID:0000-0003-3368-3859.E-mail:yuanweisuper001@126.com

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出版历程
- 收稿日期: 2026-01-07
- 网络出版日期: 2026-08-25

Three Dimensional Dynamic Characteristics and Particle Size Effect of Debris Flow Based on CFD-DEM Coupling

1. State Key Laboratory of Mechanical Behavior in Traffic Engineering Structure and System Safety, ShijiazhuangTiedao University, Shijiazhuang 050043, China;
2. State Key Laboratory of Water Resource Protection and Utilization in Coal Mining, National Institute of Clean and Low Carbon Energy, Beijing 102209, China

摘要

摘要: 为揭示泥石流在不同颗粒粒径条件下的运动特征与动力学响应规律。本文以辽东半岛中部区域老牛圈沟为研究对象，通过无人机调查和遥感影像技术获取地形特征，基于CFD-DEM耦合方法构建了泥石流三维数值模型，结合室内试验标定模型微观参数，对泥石流启动、加速、减速及堆积全过程进行了系统模拟并分析了多组粒径级配下泥石流运动与颗粒粒径效应间的响应关系。结果表明：泥石流平均速度整体呈“急剧增长—峰值波动—逐渐衰减”的演化特征，滑动区域前、中、后三段颗粒速度与位移均表现明显差异，呈现典型的沿程能量积累、碰撞传递与耗散规律；另外，颗粒粒径是影响泥石流速度、位移与能量转化的重要参数。能量分析结果显示，粒径增大时碰撞剪切作用增强，阻尼能与摩擦耗能显著增大，势能峰值随粒径增大而增大，动能峰值降低。研究结果揭示了粒径效应对泥石流运动、能量转化机制的影响，可为泥石流数值模拟、运动特征分析及灾害防控研究提供一定的理论依据。
- 泥石流 /
- CFD-DEM /
- 运动特征 /
- 颗粒粒径 /
- 能量分析
Abstract: In order to reveal the motion characteristics and dynamic response laws of debris flow under different particle sizes. In this paper, Laoniuquan gully in the central region of the Liaodong Peninsula was taken as the research object. Topographic characteristics were obtained through drone surveys and remote sensing image technology. A three-dimensional numerical model of debris flow was constructed based on the CFD-DEM coupling method. Combined with indoor tests, the model's microscopic parameters were calibrated. The entire process of debris flow initiation, acceleration, deceleration and accumulation was systematically simulated and the response relationship between debris flow movement and particle size effects under multiple groups of particle size gradations was analyzed. The results show that the average velocity of debris flow generally shows an evolution characteristic of "sharp increase-peak fluctuationgradual decline". The particle velocities and displacements in the front, middle and rear sections of the sliding area show obvious differences, showing typical energy accumulation, collision transfer and dissipation laws along the way; in addition, particle size is an important parameter affecting the velocity, displacement and energy transformation of debris flow. The energy analysis results show that as the particle size increases, the collision and shear effect increases, the damping energy and friction energy dissipation increase significantly, the peak potential energy increases with the increase of the particle size, and the peak kinetic energy decreases. The results reveal the influence of particle size effect on debris flow movement and energy transformation mechanism, which can provide theoretical basis for debris flow numerical simulation, movement characteristics analysis and disaster prevention and control research.
- Debris flow /
- CFD-DEM /
- Motion characteristics /
- Particle size /
- Energy analysis

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参考文献(68)

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基于CFD-DEM耦合的泥石流三维动力学特征及粒径效应

doi: 10.3799/dqkx.2026.184

作者简介:
吉东亮(1992—)，男，讲师，博士，研究方向为岩石力学。ORCID:0000-0002-5166-9789.E-mail:1065045422@qq.com

通讯作者:
袁维(1986—)，男，教授，博士，研究方向为工程地质灾害安全防控。ORCID:0000-0003-3368-3859.E-mail:yuanweisuper001@126.com

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Three Dimensional Dynamic Characteristics and Particle Size Effect of Debris Flow Based on CFD-DEM Coupling

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目录

留言板

基于CFD-DEM耦合的泥石流三维动力学特征及粒径效应

doi: 10.3799/dqkx.2026.184

作者简介: 吉东亮(1992—)，男，讲师，博士，研究方向为岩石力学。ORCID:0000-0002-5166-9789.E-mail:1065045422@qq.com

通讯作者: 袁维(1986—)，男，教授，博士，研究方向为工程地质灾害安全防控。ORCID:0000-0003-3368-3859.E-mail:yuanweisuper001@126.com

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Three Dimensional Dynamic Characteristics and Particle Size Effect of Debris Flow Based on CFD-DEM Coupling

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出版历程

目录

作者简介:
吉东亮(1992—)，男，讲师，博士，研究方向为岩石力学。ORCID:0000-0002-5166-9789.E-mail:1065045422@qq.com

通讯作者:
袁维(1986—)，男，教授，博士，研究方向为工程地质灾害安全防控。ORCID:0000-0003-3368-3859.E-mail:yuanweisuper001@126.com