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本文就荔枝沟隧道左线掌子面塌方原因做了分析,由于围岩地质条件差而造成的坍塌冒顶;详细介绍了加固及穿越塌方段开挖与支护的处理方案。
In this paper, the reasons for the collapse of the left-hand face of the Litchi tunnel are analyzed, and the roof collapses due to the poor geological conditions of the surrounding rock. The treatment scheme for excavation and support of the reinforcement and crossing landslides is described in detail.