›› 2007, Vol. 28 ›› Issue (S1): 379-384.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Hydromechanical coupling model and numerical simulation of tunnel excavation

JI Xiao-ming, WANG Yu-hui, YANG Zhi-yuan   

  1. Faculty of Construction, Guangdong University of Technology, Guangzhou 510643, China
  • Received:2007-05-28 Online:2007-10-25 Published:2014-03-28

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Abstract: The groundwater problem is a key issue which affects stability of the surrounding rock in tunnel engineering. A method is proposed to depict mechanical and hydraulic behavior of the tunnel ground by tunnel excavation. Based on structure of rock mass and concept of representative element volume(REV), the methods of hydromechanical coupling model is proposed. Relevant methods of establishing tunnel excavation hydromechanical coupling mathematical models are proposed. The analysis results indicate the influence boundary of stress disturbed is smaller than that of seepage disturbed boundary. The seepage forces caused seepage increase stresses and deformations in tunnel ground. According to the interaction principle between ground and support structure, the seepage effects should be considered in tunnel support structure design.

Key words: tunnel excavation, excavation disturbed zone, hydromechanical coupling mathematical simulation

CLC Number: 

  • U 456.l
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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