Abstract: Taking the defect of landslide at the exit part of Bailu Mountain Tunnel for example．the causes of landslide are ex- pounded，and the nature of landslide is also analyzed．Through the comparison of the governing plans of landslide，the theory foundation and technology plan of advancing controlling the landsliding defect at the tunnel exit of the Wuhe road are set forth，as reference to govem the mountain landslid at the exit part of the tune1．

Key words: retreat in order to advance, the exit of the tunel, the defect of landslide, the summary of governing

摘要： 以白鹿山隧道出口段的滑坡病害为例，阐述了滑坡现象的成因，并进行了滑坡体性质的分析．通过滑坡体整治 方案的比选，阐明了以退为进治理隧道洞口段滑坡病害施工方案的理论依据和技术方案，对今后隧道洞口山体滑坡 的整治提供了参考．

关键词: 以退为进, 隧道洞口, 滑坡病害, 治理总结