路基工程Issue(3)：245-251,7.DOI:10.13379/j.issn.1003-8825.202509010
考虑不同岩溶发育的顺向破碎岩体岸坡稳定性评价与加固
Stability Assessment and Reinforcement of Dip-slope Rockmass Slopes with Fractured Structure Considering Differential Karst Development
徐欣 1房波 2吴勇进3
作者信息
- 1. 中交第二公路勘察设计研究院有限公司,武汉 430056||重庆中交巫官高速公路有限公司,重庆巫山 404700
- 2. 重庆中交巫官高速公路有限公司,重庆巫山 404700||中交路桥华南工程有限公司,广东 中山 528400
- 3. 长江科学院水利部岩土力学与工程重点实验室,武汉 430010
- 折叠
摘要
Abstract
Karst features were developed at the toe of the south bank slope of a Yangtze River bridge.Geological analysis and limit equilibrium methods were employed to investigate the potential failure modes and stability of the slope,and a reinforcement scheme was put forward accordingly.Results show that the bedrock on the south bank is structurally influenced with variable bedding orientations.Karst features of various sizes are developed at different depths within the slope,and a karst cavity with a vertical height of nearly 40 m exists at the slope toe,providing favorable conditions for the formation of a shear outlet at the front edge.The potential deformation and failure mechanism of the south bank slope is a composite type:rearward sliding-tensile cracking along bedding planes,combined with forward shear failure across karst-fractured zones.Stability analysis indicates insufficient shallow-layer safety reserves,failing to meet the required safety factor standard for slope stability.Two reinforcement schemes are proposed,i.e.anchor cable with frame beams and anti-slide piles combined with anchor cables.After comparative analysis,the latter one is adopted as the final reinforcement scheme.关键词
公路工程/桥基边坡/结构特征/岩溶/破坏模式/组合加固/稳定性分析Key words
highway engineering/bridge foundation slope/structural characteristics/karst/failure mode/combined reinforcement/stability analysis分类
天文与地球科学引用本文复制引用
徐欣,房波,吴勇进..考虑不同岩溶发育的顺向破碎岩体岸坡稳定性评价与加固[J].路基工程,2026,(3):245-251,7.
