高陡岩质边坡二次开挖稳定性数值模拟分析
Journal: Engineering Technology Development DOI: 10.32629/etd.v7i2.18961
Abstract
为研究高陡岩质边坡二次开挖过程中的稳定性演变规律及支护效果,基于实际工程地质资料,采用Rhino和Griddle建立三维地质模型,导入FLAC3D进行数值模拟。通过强度折减法,对比分析原始状态、一次开挖及二次开挖(含抗滑桩)三种工况下边坡的位移场、应力场、剪应变增量及塑性区特征。结果表明：原始边坡基本稳定但存在潜在滑动面；一次开挖后卸荷回弹明显,安全系数提高；二次开挖并施作抗滑桩后,位移得到有效控制,剪应变增量贯通区被截断,塑性区扩展受限,安全系数满足规范要求。抗滑桩支护方案显著提升了边坡稳定性,可为类似工程提供参考。
Keywords
高陡岩质边坡；二次开挖；抗滑桩；FLAC3D；数值模拟
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