复杂隧道内外变形响应特征及其相关性分析
摘要
隧道开挖扰动了山体，激活原本稳定或缓慢变形的滑体，加速其下滑。本文基于峨汉高速建全村隧道洞口边坡的地形地貌、地质条件和监测数据，分析了山体变形与隧道变形的相互影响。山体蠕滑持续，导致隧道不均匀变形，进而引发四种病害：侵限、换拱、塌方及初支/二衬开裂。通过对四种病害段落的监控数据拟合，得出三种破坏模型：侵限的“对数型”、换拱的“二次型”、塌方及开裂的“直线型”。洞内变形促使对洞外边坡的关注，监测表明滑动面位于隧道拱顶上方，且有持续蠕滑现象。最终，通过不平衡推力法评估滑体下滑对隧道的影响。
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参考
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