ISSN 2096-4498
CN 44-1745/U
Tunnel Construction ›› 2007, Vol. 27 ›› Issue (5): 17-19.DOI: A
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CANG Shou-Jie
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Abstract:
The existing karst caves below the floors of the karst tunnels have direct influence on the tunnel construction and railway operation. Therefore, the analysis and assessment on the stability of the floors of the karst tunnels is one of the critical issues for the karst tunnel construction. In the paper, a semiquantitative evaluation method is provided for the minimum safe thickness of the floors of the karst tunnels by means of the load transferring line concept; theoretical formulas are established for the minimum safe thickness of the floor rocks of the karst tunnels based on the criteria of tension strength and shear strength of rocks by means of elastic theories. The paper can provide reference for the assessment on the safety of the floors of the karst tunnels during construction.
CLC Number:
U451+.2
CANG Shou-Jie. Theoretical Study on Minimum Safe Thickness of Floors of Tunnels in Heavy Karst Areas during Construction[J]. Tunnel Construction, 2007, 27(5): 17-19.
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