Construction practice of landslide during tunneling in hilly topography.

This paper presents a case study of landslide during tunneling period in hilly topography, and a practical treating countermeasure is also proposed in the study. The field investigation and numerical analysis demonstrate that tunneling in hilly topography with sloping stratification has risk of landslide while heavy rainfall permeates into ground, and a treating countermeasure of anti-slide piles combined with in-layer compacted backfilling is adopted in the practical implementation. Moreover, the implemented treating work demonstrates that the employed countermeasure is capable of treating landslide during tunneling with heavy rain water permeating into ground, which can provide the design basis for similar treating work. • A case of landslide during tunneling is presented. • The landslide is caused by tunneling in hilly topography with heavy rainfall. • The primary cause of landslide during tunneling can be numerically clarified. [ABSTRACT FROM AUTHOR]