Abstract
The purpose of this paper is to investigate the application of the discrete element program UDEC for modelling underground explosions in a jointed rock mass. A field underground explosion test has been conducted and UDEC and AUTODYN were utilised in a coupled manner to predict the rock mass response due to the underground explosion. The dynamic equation for the state of the rock material obtained from impact tests was incorporated into the calibration modelling. The comparison of modelling results with test results and empirical formulas shows that UDEC is capable of modelling explosion wave propagation in jointed rock mass with high reliability.
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Ambraseys, N. R. and Hendron, A. J. (1968) Dynamic behaviour of rock masses. Rock Mechanics in Engineering Practice, Stagg, K.G. and Zienkiewicz, O.C. (eds.), John Wiley and Sons, London, pp. 203–227.
Barton, N., By, T. L., Chryssanthakis, P., Tunbridge, L., Kristiansen, J., Loset, F., Bhasin, R. K., Westerdahl, H. and Vik, G. (1994) Predicted and measured performance of the 62 m span Norwegian olympic ice hockey cavern at Gjovik. Int. J. Rock Mech. Min. Sci. Geomech. Abstr., 31, 617–641.
Brady, B. H. G. (1993) Dynamic behaviour of rock. Comprehensive Rock Engineering, Hudson, J.A. (ed.), 1, 611–624.
Burton, T. D. (1994) Introduction to Dynamic System Analysis, McGraw-Hill, New York.
Century Dynamics (1997) AUTODYN-2D Version 3.0 User Documentation, Vols. 1 and 2.
Chen, S. G. and Zhao, J. (1998) A study on UDEC modelling of blast wave propagation in jointed rock masses. Int. J. Rock Mech. & Min. Sci. 35(1), 93–99.
Chen, S. G., Jain, M. and Zhao, J. (1999) Considerations in discrete element modelling of explosion problems in rock. 3rd International conference on shock and impact loads on structures, November, Singapore.
Chen, S. G., Cai, J. G. and Zhao, J. (2000) Time delay of wave propagation at rock joints, 1st local MINDEF-NUS-NTU conference, Singapore, March (accepted).
Cundall, P. A. (1980) UDEC-a generalised distinct element program for modelling jointed rock. Report PCAR-1-80, Peter Cundall Associates, U.S. Army, European Research Office, London, Contract DAJA37-79-C-0548.
Dowding, C. H. (1996) Construction vibrations, Prentice-Hall.
Fairhurst, C. and Pei, J. (1990) A comparison between the distinct element method and the finite element method for analysis of the stability of an excavation in jointed rock. Tunnelling and Underground Space Technology, 3, 111–117.
Hart, R. D. (1993) An introduction to distinct element modelling for rock engineering. Comprehensive Rock Engineering, Hudson, J.A. (ed.), 2, 245–261.
Itasca (1996) UDEC User's Manual. Itasca Consulting Group Inc., Minneapolis.
Jing, L. (1990) Numerical modelling of jointed rock masses by distinct element methods for two and three-dimensional problems. PhD Thesis, Luleå University of Technology, Luleå, Sweden.
Kuhlmeyer, R. L. and Lysmer, J. (1973) Finite element method accuracy for wave propagation problems. J. Soil Mech. Foundations Div., 99, 421–427.
Lysmer, J. and Kuhlmeyer, R. L. (1969) Finite dynamic model for in¢nite media. J. Engng. Mech., 95, 859–877
Lysmer, J. and Waas, G. (1972) Shear waves in plane in¢nite structures. J. Eng. Mech. Div., 98, 85–105.
McQueen, R. G., Marsh, S. P., Taylor, J. W., Fritz, J. N. and Carter, W. J. (1970) The equation of state of solid from shock wave studies. High velocity impact phenomena, Academic Press, New York, pp. 293–417.
Pinnaeduwa, H. S.W., Kulatilake, P. H. S.W., Ucpirti, H. and Stephansson, O. (1994) Effects of finite-size joints on the deformability of jointed rock at the two-dimensional level. Canada Geotechnical Journal, 31, 364–374.
Pyrak-Nolte, L. J. (1988) Seismic Visibility of Fractures. Ph.D. thesis, University of California, Berkeley, California.
Rosengren, L. (1993) Preliminary analysis of the dynamic interaction between Norra Lanken and a subway tunnel for Stockholm, Sweden. Tunnelling and Underground Space Technology, 8, 429–439.
Senseny, P. E. and Simons, D. A. (1994) Comparison of calculational approaches for structural deformation in jointed rock. Int. J. Num. Analy. Methods Geomech., 18, 327–344.
Shang, J. L., Shen, L. T., Zhao, J. and Zhao, Y. H. (1999) Hugoniot equation of state of the Bukit Timah granite, Int. J. Rock Mech. Sci. (accepted).
Shen, B. and Barton, N. (1997) The disturbed zone around tunnels in jointed rock masses. Int. J. Rock Mech. Min. Sci. Geomech. Abstr., 34, 117–125.
White, W., Valliappan, S. and Lee, I. K. (1977) Unified boundary for ¢nite dynamic models. J. Eng. Mech. Div., 103, 949–964.
Wu, T. H. (1975) Soil Dynamics, Allyn and Bacon.
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Chen, S.G., Cai, J.G., Zhao, J. et al. Discrete element modelling of an underground explosion in a jointed rock mass. Geotechnical and Geological Engineering 18, 59–78 (2000). https://doi.org/10.1023/A:1008953221657
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DOI: https://doi.org/10.1023/A:1008953221657