水力发电学报2024，Vol.43Issue(7)：61-72,12.DOI:10.11660/slfdxb.20240706
颗粒流运动SPH方法及滑坡破碎效应研究
Study on SPH method of granular flow motion and landslide fragmentation effect
摘要
Abstract
Landslide geological disasters,common and worldwide,feature intermittency and enormous destructive power.An effective numerical model for such disasters helps formulate the targeted prevention and control strategies of landslides.Focusing on the particle flow characteristics of landslide movement,this paper derives an expression of the dynamic friction coefficient of shallow landslides based on the μ(I)model,and constructs a corresponding framework for solutions using the Smoothed Particle Hydrodynamics(SPH)method.We examine the significant impact of particle fragmentation on landslide movement,and derive a relationship of its basal frictional force versus grain distribution to improve the model by applying the particle fragmentation law based on its potential of destruction.This model is verified against two previous studies in literature-classical three-dimensional slope model experiments,along with a sensitivity analysis on its parameters related to particle fragmentation effects,thus laying a basis for further study of landslide disaster prevention and control.关键词
滑坡/μ(I)模型/光滑粒子流体动力学/颗粒破碎Key words
landslide/μ(I)model/smoothed particle hydrodynamics(SPH)/particle fragmentation分类
建筑与水利引用本文复制引用
林川,林彦喆,苏燕,潘依琳,高献..颗粒流运动SPH方法及滑坡破碎效应研究[J].水力发电学报,2024,43(7):61-72,12.基金项目
国家自然科学基金项目(52109118) （52109118）
水利部重大科技项目(SKS-2022151) （SKS-2022151）
福州大学贵重仪器设备开放测试基金(2023T031) （2023T031）
