安全与环境工程2026，Vol.33Issue(1)：56-68,13.DOI:10.13578/j.cnki.issn.1671-1556.20250651
考虑渗透各向异性的动水压力型滑坡变形响应规律
Deformation response laws of hydrodynamic pressure landslide considering seepage anisotropy
摘要
Abstract
Landslides induced by hydrodynamic pressure constitute significant geological hazards during the operation of the Three Gorges Reservoir.Due to their loose structure,high void ratio,and strong permeability,the sliding mass exhibits pronounced permeability anisotropy.To investigate the influence of permeability anisotropy on the deformation response of hydrodynamic pressure-induced landslides,the Baijiabao landslide in the Three Gorges Reservoir area is studied.The permeability coefficient ratio kx/ky is used to characterize permeability anisotropy.The variations in landslide surface displacement and time lag under different permeability coefficient ratios kx/ky and reservoir drawdown rates v are systematically analyzed.The results are as follows:①As the ratio of hydraulic conductivities kx/ky increases,the phreatic line in the front part of the landslide rises,the hydraulic head difference inside and outside the landslide mass increases simultaneously,and the seepage force directed outward from the slope increases accordingly.②At constant v,higher kx/ky ratios increase both surface displacement and deformation hysteresis time.When 0.1<kx/ky≤10,the growth rates of surface displacement increment and hysteresis time are significant.Beyond kx/ky>10,these values stabilized.③The leading edge exhibits higher sensitivity to permeability anisotropy and v than mid-rear sections.Under constant v,displacement increments at leading-edge monitoring points surpass those at rear sections.These results provide significant practical value for deformation analysis and early warning of hydrodynamic pressure-induced landslides.关键词
动水压力型滑坡/各向异性/渗透系数/库水位下降/地表位移/滞后时间Key words
hydrodynamic pressure landslide/anisotropy/hydraulic conductivity/reservoir water level drawdown/surface displacement/time lag分类
资源环境引用本文复制引用
刘艺梁,朱前,李永奕,左清军,樊西丰,宋琨,申高伟,汤罗圣..考虑渗透各向异性的动水压力型滑坡变形响应规律[J].安全与环境工程,2026,33(1):56-68,13.基金项目
国家自然科学基金项目(41807294) （41807294）
防灾减灾湖北省重点实验室开放基金项目(2025KJZ02) （2025KJZ02）
湖北省交通运输厅科技项目(2023-121-4-2) （2023-121-4-2）
湖北省科技计划(2025CSA068) （2025CSA068）
三峡大学土木与建筑学院科研创新基金项目(2024SSCX003) （2024SSCX003）
