The Study on Mechanical Properties of Karst Tunnel

Bin Li; Tai Yue Qi

doi:10.4028/www.scientific.net/AMR.243-249.3399

Paper Titles

Mechanical Analysis of Tunnel Crossing Ground Fissure
p.3376

Compression Test of Lining of Tunnel Fireproof Concretes
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Loess Highway Tunnel Supports Stress Analysis and Construction Method Mechanism
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Development and Application of Complementary Support Technology under the Condition of Weak and Broken Surrounding Rocks
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The Study on Mechanical Properties of Karst Tunnel
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Risk Control in the Deep Excavations with the Application of the Observational Method
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FEM Research on the Impact of Changsha Subway Construction to Wan Dai Hotel
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The Comparative Study on the Impact of Tunnel Excavation with Footage Different CRD to Testability of Surrounding Rock
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Three-Dimensional Numerical Analysis on Heading Construction of Metro Station by Drift-PBA Method
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 243-249The Study on Mechanical Properties of Karst Tunnel

The Study on Mechanical Properties of Karst Tunnel

Abstract:

Several numerical models were built by FLAC3D to simulate tunnel with karst around spandrel, tunnel with karst around springe, tunnel with karst around inverted arch and tunnel with karst around side wall. The influence of karsts on the deformation of lining and the safety coefficient distribution of surrounding rock after excavation was analyzed. The results from the numerical modeling suggest as follows: karst around spandrel has extremely unfavorable effect on the deformation of lining and the safety of surrounding rock above the vault, karst around side wall also seriously affect the stability of tunnel due to the asymmetry pressure on tunnel caused by karst, consequently, auxiliary measures should be taken to handle these two cases; karst around springe and karst around inverted arch has limited adverse influence on the overall safety of tunnel, backfill measures are enough to handle these two cases.

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Periodical:

Advanced Materials Research (Volumes 243-249)

Pages:

3399-3402

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.243-249.3399

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Online since:

May 2011

Authors:

Bin Li, Tai Yue Qi

Keywords:

Deformation of Lining, Finite Difference, Karst Tunnel, Safety Coefficient

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References

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