A Method for Determining Second Lining Supporting Opportunity in Soft Rock Tunnel

Zhong Wen Wang; Jian Qin Fang; Cai Chu Xia; Yue Wei Bian; Kun He

doi:10.4028/www.scientific.net/AMR.243-249.3644

Paper Titles

Study on the Multi-Layered Excavation Scheme of the Large Underground Powerhouse
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Influence of Tunnel Blasting on the Close-Spaced Tunnel
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Research on Repeatability of Karst Water Burst Flood and Stability of Long-Hole Grouting in Long and Large Tunnel
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Mechanical Analysis on Secondary Lining Damaged by Local Load under Earthquake
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A Method for Determining Second Lining Supporting Opportunity in Soft Rock Tunnel
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 243-249A Method for Determining Second Lining Supporting...

A Method for Determining Second Lining Supporting Opportunity in Soft Rock Tunnel

Abstract:

The determination criteria and methods are summarized for the reasonable supporting opportunity which is obtained from the numerical calculation of GeoFEM. It is the limit state of surrounding rock when the second lining undertakes 10 percent of load in Ⅳ grade rock(buried depth 121m), and the surrounding rock with burial depth 43meters reaches its limit state when the second lining bears 5 percent of load in Ⅴ grade rock. The reasonable supporting opportunity will be obtained from those two limit states with the criteria.

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Periodical:

Advanced Materials Research (Volumes 243-249)

Pages:

3644-3651

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.243-249.3644

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Online since:

May 2011

Authors:

Zhong Wen Wang, Jian Qin Fang, Cai Chu Xia, Yue Wei Bian, Kun He

Keywords:

Second Lining, Soft Rock, Timbering Timing

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References

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