Numerical Simulation for Destroy Pattern of Surrounding Rock of Circle Tunnel with M-H Coupling Action

An Nan Jiang; Peng Li

doi:10.4028/www.scientific.net/AMM.71-78.3572

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 71-78Numerical Simulation for Destroy Pattern of...

Numerical Simulation for Destroy Pattern of Surrounding Rock of Circle Tunnel with M-H Coupling Action

Abstract:

The uniform zonal disintegration of surrounding rock is the peculiar phenomena of deep and high stress field, researching the inner mechanism and affecting factors has important meaning for guaranteeing the safety of deep engineering. The paper adopted strain soft Mohr-Coulomb model and carried out numerical simulation of surrounding rock fracture and excavation. The simulation states that along with the unloading time accumulation, the shear belt produced from tunnel wall and developed to inner rock. The corresponding shear stress concentration zone also spread to inner rock and destroy zone increasing. The pore water pressure increasing will accelerate the shear belt developing and increase the destroy degree.

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Periodical:

Applied Mechanics and Materials (Volumes 71-78)

Pages:

3572-3576

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.71-78.3572

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Cite this paper

Online since:

July 2011

Authors:

An Nan Jiang, Peng Li

Keywords:

Interval Destroy, M-h Coupling, Numerical Simulation, Rock Mechanic, Strain Soft

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References

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