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Influence of Young’s Modulus and Poisson’s Ratio on the Displacement Around a Circular Tunnel

  • A. K. Verma
  • T. N. Singh
Chapter
Part of the Society of Earth Scientists Series book series (SESS)

Abstract

Elastic parameters such as Young’s modulus and Poisson’s ratio are significant to demarcate the damage zone around circular opening of tunnels. In the present study, a three dimensional finite difference numerical code, FLAC3D has been employed to study the effect of elastic parameters (E and v) on the radial displacement along the longitudinal direction around circular tunnel in hydrostatic field conditions. The tunnel is assumed to be driven in a homogeneous, isotropic, linear elastic rock mass. The results are compared with work done by previous researchers. Also, volumetric strain around tunnel and its behavior near the tunnel face have also been investigated to examine the failure behavior near the tunnel face. The material properties incorporated in the numerical model were taken in the range of common Indian rocks strength properties where most of the tunneling activities are going on. The empirical equation based on influence of Young’s modulus and Poisson’s ratio on radial deformation along the longitudinal axis of tunnel has been provided. Also, the relations between elastic parameters (E and v) and radial displacement has been proposed for future use in similar rock conditions.

Keywords

Rock Mass Volumetric Strain Radial Displacement Critical Distance Tunnel Face 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.Department of Earth ScienceIndian Institute of TechnologyBombayIndia

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