以西南沟1号隧道塌方事件为背景,全面分析该隧道塌方形成的原因,研究提出针对性的处理方案,并取得了预期效果,为今后同类隧道塌方处理积累了宝贵经验。%Taking the collapse accident of No.1 tunnel of Xi＇nangou as the background,the paper analyzes the reasons for the tunnel collapse fully,points out the treatment effect accordingly,and achieves the expected effect,so as to accumulate the precious experience for the collapses of similar tunnels in future.
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