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Advances in Civil Engineering
Volume 2010 (2010), Article ID 149810, 13 pages
Research Article

Bolt-Grout Interactions in Elastoplastic Rock Mass Using Coupled FEM-FDM Techniques

1Department of Mining Engineering, Indian Institute of Technology, Kharagpur 721302, India
2Department of Mathematics, Indian Institute of Technology, Kharagpur 721302, India

Received 28 January 2010; Revised 21 April 2010; Accepted 30 June 2010

Academic Editor: Ser Quek

Copyright © 2010 Debasis Deb and Kamal C. Das. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Numerical procedure based on finite element method (FEM) and finite difference method (FDM) for the analysis of bolt-grout interactions are introduced in this paper. The finite element procedure incorporates elasto-plastic concepts with Hoek and Brown yield criterion and has been applied for rock mass. Bolt-grout interactions are evaluated based on finite difference method and are embedded in the elasto-plastic procedures of FEM. The experimental validation of the proposed FEM-FDM procedures and numerical examples of a bolted tunnel are provided to demonstrate the efficacy of the proposed method for practical applications.