中国地质灾害与防治学报2025，Vol.36Issue(6)：37-47,11.DOI:10.16031/j.cnki.issn.1003-8035.202408011
基于MPM-DEM耦合的弃渣场稳定性及灾害动力学分析
Stability and dynamic hazard analysis of dumpsites based on MPM-DEM coupling algorithm
摘要
Abstract
The rapid expansion of highway construction in mountainous areas has heightened the focus on the stability of dumpsites and the assessment of potential failure disasters.High-energy landslides can severely impact structures along the way,posing significant risks to life and property.Leveraging the material point method(MPM)for simulating large deformations in continuous media and the discrete element method(DEM)for precise contact detection,the MPM-DEM coupling algorithm can effectively models interactions between landslides and complex terrains or structures.This study employs the MPM-DEM coupling algorithm within the GPU-accelerated high-performance computing software CoSim to analyze the stability and dynamic hazard potential of dumpsite slopes.The validity and accuracy of the proposed algorithm were initially verified through a case study involving granular material impacting a structure.Subsequently,a highway dumpsite in Yunnan Province was selected as an example to evaluate the stability factor and the predict the potential failure's impact range and severity.Results indicate that the dumpsite slope is currently stable;however,should instability occur,it would exert significant impact on downstream highway bridge piles.The numerical simulation results demonstrate the strong capabilities of the coupling algorithm in the stability and dynamic failure analysis of dumpsite slopes,which can simulate the entire process of"stability-large deformation-flow-accumulation"for slopes.关键词
物质点法(MPM)/离散元法(DEM)/MPM-DEM耦合算法/稳定性分析/失稳评估Key words
material point method(MPM)/discrete element method(DEM)/MPM-DEM coupling algorithm/stability analysis/failure assessment分类
天文与地球科学引用本文复制引用
任禾,王君豪,徐文杰,王恒威,董晓阳,孙文超,冯明明,吕飞..基于MPM-DEM耦合的弃渣场稳定性及灾害动力学分析[J].中国地质灾害与防治学报,2025,36(6):37-47,11.基金项目
公路弃渣场失稳灾害评估及防治关键技术研究与运用示范项目(YCIC-YF-2022-09) （YCIC-YF-2022-09）
