From Engineering Computations: International Journal for Computer-Aided Engineering and Software: The Discrete Element Method: Numerical Modelling of Discontinua, Volume 21, Number 2/3/4, 2004

Dwayne D. Tannant
Department of Civil and Environmental Engineering,
University of Alberta, Alberta, Canada
Caigen Wang
Sons of Gwalia Southern Cross Operations, Southern Cross, Australia
Received February 2003
Revised July 2003
Accepted July 2003
Engineering Computations
Vol. 21 No. 2/3/4, 2004
pp. 318-342
Emerald Group Publishing Limited
0264-4401
DOI 10.1108/02644400410519811

Highlights

Keywords Discrete manufacturing, Numerical analysis, Modelling

Abstract Simple discrete element models using PFC 2D models with bonded assemblies of particles were used to numerically simulate direct tension and block punching tests on thin spray-on tunnel liner materials to gain insight about the liner support mechanisms. PFC 2D input parameters were calibrated such that the rupture load and elongation at rupture were similar to the laboratory test data. The calibrated model of the liner material was then used to simulate a liner around a highly stressed tunnel in rock where stresses caused extensive fracturing near the top of the tunnel. The effect of the liner was analysed by modelling the tunnel with and without the liner and showed that the liner had minimal impact on fracture propagation in the rock because of the liner s highly deformable nature. However, the liner was able to retain the fractured rock in place.

Thin Spray-on Liners

Recent developments

Thin spray-on liners are a new form of underground rock support receiving increasing attention around the world. They have performance characteristics that lie between those of shotcrete and wire mesh. Various liner materials are currently being developed and tested in underground Canadian mines. They...

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Topics of Interest

E. Rougier, A. Munjiza and J.P. Latham Department of Engineering, QMW, University of London, UK Received February 2003 Accepted July 2003 Engineering Computations Vol. 21 No. 2/3/4, 2004 pp. 343-359...

J.P. Morris Energy and Environment Directorate, Lawrence Livermore National Laboratory, Livermore, California, USA M.B. Rubin Faculty of Mechanical Engineering, Technion - Israel Institute of...

Andrew McBride, Indresan Govender, Malcolm Powell and Trevor Cloete Department of Mechanical Engineering, University of Cape Town, Cape Town, South Africa Received February 2003 Revised July 2003...

A. Munjiza Department of Engineering, QMW, University of London, UK J.P. Latham Department of Earth Science and Engineering, Imperial College, London, UK Received February 2003 Revised July 2003...

Endrin and DDT breakdown and active semivolatiles tests were used for the Ultra Inert liner deactivation performance evaluation. The results indicate that the Ultra Inert deactivated liners provide...

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