Collapse Cause Analysis and Treatment Research of West Slope Tunnel

Hui Min Wang; Hua Jun Guo

doi:10.4028/www.scientific.net/AMM.470.954

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 470Collapse Cause Analysis and Treatment Research of...

Collapse Cause Analysis and Treatment Research of West Slope Tunnel

Abstract:

Abstract: West Slope Tunnel's surrounding rock is broken. A positive step method is used in the reconstruction process of collapsed West Slope Tunnel. During tunnel construction process, heavy rain cause a landslide failure of tunnel (Located in DK51+175- DK51+195). The mainly collapsed area is located in the position of DK51+180. According to collapsing, we executed the settlement observation, cross-section deformation detection and upper crack observation.When collapse settlement is basically stable, the collapse is segmented to settle. The previous board of Secondary lining for the collapse need to add steel reinforcement and tunnel collapse cavity backfill C30 concrete. When concrete strength is expected ,it need to be excavated and must keep the core soil. The advanced small pipe is needed to stabilize the soil before the excavation section. In invasion of secondary lining collapse, girdle previous Primary Support and reform Primary Support.. Add I16 steel frame where necessary. We must strengthen the tunnel monitoring to ensure the safety during tunnel construction process.

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Periodical:

Applied Mechanics and Materials (Volume 470)

Pages:

954-957

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.470.954

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Online since:

December 2013

Authors:

Hui Min Wang, Hua Jun Guo

Keywords:

Collapse Cavity, Construction, Secondary Lining, Steel Frame, Tunnel

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