Elastoplastic Analysis of Surrounding Rocks of the Pressure Tunnel

Abstract:

According to the triple shear unified yield criterion, the mechanical behavior of the pressure tunnel was put forward. The calculation formulas of the radius of plastic zone were deduced with considerations of the effects of the intermediate principal stress. The results show that the intermediate principal stress effect parameter b has influences on the radius of plastic zone. With the increase of the intermediate principal stress effect parameter b, the radius of plastic zone decreases. The radius of plastic zone is increased, because of the increase of the porous hydraulic pressure.

• Periodical: Applied Mechanics and Materials (Volumes 353-356)
• Pages: 1644-1647
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.353-356.1644
• Online since: August 2013
• Authors: Shen Qiong*
• Keywords: Pressure Tunnel, Radius of Plastic Zone, Triple Shear Unified Yield Criterion

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