摘要
为研究含软弱夹层顺层岩质边坡的变形、破坏及滑动演化过程,以抚顺西露天矿南帮E1200剖面为研究对象,采用GDEM建立二维数值计算模型,模拟重力作用下边坡的变形、破坏及其沿滑面滑动的演化情况。研究结果表明:抚顺西露天矿南帮为上陡下缓的层状体边坡。在变形破坏阶段边坡整体遵从拉裂-滑移-剪断的变形破坏模式,其中坡顶回填土发生剪切破坏,坡中玄武岩及坡底软弱夹层2处发生滑移-弯曲破坏,坡底油母页岩发生滑移-剪断破坏;潜在滑动面从坡顶沿软弱夹层2向坡底逐步扩展最后贯通;滑动阶段边坡主要沿断层泥-煤接触面向下滑动。
In order to study the deformation,failure and slide evolution process of bedding rock slope with weak interlayer,a two-dimensional numerical calculation model was established using GDEM to simulate the deformation,failure and the evolution of slope sliding along the sliding surface and taking E1200 profile on the south slope of Fushun West open-pit mine as the research object.The results show that the south slope of Fushun West open-pit mine is a layered slope with steep upper slope and slow lower slope.In the stage of deformation and failure,the slope follows the deformation and failure mode of crack-slip-shear,in which shear failure occurs in the backfill at the top of the slope,slip-bending failure occurs in the tuff in the middle of the slope and the second weak interlayer at the bottom,and slip-shear failure occurs in the oil-bearing shale at the bottom.The potential sliding surface extends gradually from the top of the slope to the bottom of the slope along the weak interlayer and finally connects.In sliding stage,the slope slides mainly along the gouge-coal contact face.
作者
王来贵
马玮航
赵娜
甘超超
WANG Laigui;MA Weihang;ZHAO Na;GAN Chaochao(School of Mechanics and Engineering,Liaoning Technical University,Fuxin 123000,China)
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2023年第2期129-135,共7页
Journal of Liaoning Technical University (Natural Science)
基金
国家重点研发计划项目(2017YFC1503102)
关键词
顺层岩质边坡
软弱夹层
破坏
滑动
bedding rock slope
weak interlayer
failure
slide
