Analysis and Treatment of Landslide at the Tunnel Portal in Nanjing Road

Abstract:

The landslide at the tunnel portal in Nanjing Road is mainly determined by a weak intercalated layer between the completely weathered bedrock and the strongly weathered bedrock. The weak intercalated layer has low permeability and weak shear strength, and its interface dip outside of the slope. As the consequence, landslide is likely to happen again due to a rainstorm or other inducement. In order to prevent a second landslide, a comprehensive treatment scheme is presented, which implements anti-slide piles as the major treatment and several auxiliary treatments including filling and compacting the cracks, cutting-off and draining water, locally bolt-shotcrete support, and repairing the existing retaining wall and the lattic frame beams. After applying this scheme, the slope stability meets the design requirements.

• Periodical: Applied Mechanics and Materials (Volumes 353-356)
• Pages: 686-691
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.353-356.686
• Online since: August 2013
• Authors: Zhuan Wen Xiao, Lei Huang
• Keywords: Anti-Slide Pile, Bolt-Shotcrete Support, Comprehensive Treatment, Drainage System, Landslide

References

[1] Industry standard of Geology and Mineral of the People's Republic of China: Specification of Design and Construction for Landslide Stabilization. Standards Press of China, China 2006 (In Chinese).

[2] Qihua Zhao, Sheqin Peng: Retaining and Anchor Engineering for Rock & Soil Mass. Sichuan University Press, China 2008 (In Chinese).