A Study on the Influence by Karst on the Stability of Surrounding Rock in Neighborhood Tunnel

Abstract:

Based on the Shuangbei tunnel, this paper studied influences on the deformation and stress of surrounding rock, regarding different Karst sizes and locations in such a neighborhood tunnel. The study indicates that variations of size and distance of the karst have prominent influence on the vertical displacements of vault and right side-wall in the tunnel near the karst, but have no influence on the horizontal displacement; while variation of karst size has prominent influence not only on the horizontal displacement, but also on the vertical displacement at the bottom of the tunnel far away from the karst; variations of size and distance of the karst have the prominent influence on the vault stress of the two tunnels. The results offer the reference to the tunnel construction and the selection of support type.

• Periodical: Advanced Materials Research (Volumes 446-449)
• Pages: 2177-2181
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.446-449.2177
• Online since: January 2012
• Authors: Cheng Wang, Xiao Qiang Pi
• Keywords: Deformation of Surrounding Rock, Karst Location, Karst Size, Neighborhood Tunnel, Stress of Surrounding Rock

References

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