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隧道塌方是隧道施工中常见的地质灾害,本文通过尼夫沟隧道特大型塌方的成功处理,对注浆再开挖技术在大型及特大型隧道塌方处理中的应用进行了较为详细的分析。
Tunnel collapse is a common geological disasters in tunnel construction. In this paper, through the successful treatment of large landslides in the Nefuga tunnel, the application of grouting re-excavation technology in landslide treatment of large and extra large tunnels is analyzed in detail.