Numerical Simulation of Advanced Small Pipe in Tunnels during Excavation by Steps

Chang Yu Jin; Zi Feng Xia; Chun Fu Xiang; Long Bin Dong; Pan Pan Zhao; Dong Liu

doi:10.4028/www.scientific.net/AMM.353-356.3699

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 353-356Numerical Simulation of Advanced Small Pipe in...

Numerical Simulation of Advanced Small Pipe in Tunnels during Excavation by Steps

Abstract:

Advanced small pipe support is one of the advanced support patterns in tunnel engineering construction for weak and fractured surrounding rock. The support effect cannot be predicted because of depending on engineering experiences. Efforts are made to study and analyze the support mechanism of advanced small pipe in the excavation of soft - fracture wall rock. By the numerical simulation of FLAC^3D of Dawangou tunnel based on rock mass deterioration model (RDM), the plastic zone, displacement and stress filed of the surrounding rock are simulated with and without the advanced small pipe support. The support effect of advanced small ducts in tunnels during excavation by steps is presented.

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Periodical:

Applied Mechanics and Materials (Volumes 353-356)

Pages:

3699-3702

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.353-356.3699

Citation:

Cite this paper

Online since:

August 2013

Authors:

Chang Yu Jin, Zi Feng Xia, Chun Fu Xiang, Long Bin Dong, Pan Pan Zhao, Dong Liu

Keywords:

Excavation by Step, Numerical Simulation, Small Pipe Grouting, Tunneling Engineering

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References

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