河北水利电力学院学报2024，Vol.34Issue(4)：17-22,6.DOI:10.16046/j.cnki.issn2096-5680.2024.04.004
基于库水位变化的南湾滑坡三维数值模拟
Three-dimensional Numerical Simulation of a Landslide in South Bend River Basin Based on the Variation of Reservoir Water Level
摘要
Abstract
Taking Nanwan landslide in Southwest Henan Province as an engineering example,com-bined with soil mechanics seepage theory and FLAC3D software,three-dimensional numerical simulation of Nanwan landslide in southwest Henan Province was carried out by using finite difference software FLAC3D software through the influence of reservoir water level sudden drop on pore water pressure and seepage field distribution,combined with two-dimensional unsaturated seepage theory and two-dimensional seepage analysis software in soil mechanics.The results show that the pore water pressure of the soil mass in Nan-wan landslide in southwest Henan Province tends to increase when the reservoir water level was at 105.89m,and the soil mass was relatively dense,which has no adverse effect on the stability of the landslide.When the reservoir water level drops abruptly,the pore water pressure of the landslide body drops rapid-ly,driving the flow of soil particles in the landslide body.Due to the change of seepage force,the safety factor of landslide soil mass was reduced,and then the local instability of landslide soil mass was caused.It provides a theoretical reference for the analysis and evaluation of landslide stability under the state of reser-voir water level rise and fall.关键词
滑坡/库水位升降/FLAC3D软件/三维数值模拟Key words
landslide/rise and fall of reservoir water level/FLAC3D software/three-dimensional nu-merical simulation分类
天文与地球科学引用本文复制引用
余沛..基于库水位变化的南湾滑坡三维数值模拟[J].河北水利电力学院学报,2024,34(4):17-22,6.基金项目
教育部第二期供需对接就业育人项目(20230112702) （20230112702）
河南省高等学校重点科研项目(25B560014) （25B560014）
