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通过对任家沟1#隧道2次塌方原因、处理方案分析,探讨浅埋3车道大跨度强风化千枚岩公路隧道塌方处理施工中应注意的问题。
Through the analysis of the cause of 2 landslides and the treatment scheme of 1 # tunnel in Renjiagou, the authors pay attention to the problems that should be paid attention to in the landslide treatment of the shallow-buried 3-lane long-span strong weathering phyllite tunnel.