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Simulation of blast induced crater in jointed rock mass by discontinuous deformation analysis method

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Abstract

Rock blasting is a dynamic process accompanied with the propagations of shock waves and the dispersion of the explosion gas. This paper adopts the discontinuous deformation analysis (DDA) method to simulate the rock blasting process. A dynamic parameter adjustment and the non-reflecting boundary condition are implemented in the DDA method. The sub-block DDA method to simulate fracture problems is used. The blasting process in jointed rock mass is simulated by application of the explosion gas pressure on the expanding borehole walls and induced connected fracture surfaces around the boreholes. The blast craters with different overburdens are derived. The whole process including the explosion gas dispersion, borehole expansion, rock mass failure and cast, and the formation of the final blasting piles in rock blasting are well reproduced numerically. Parametric study for different overburdens is carried out, and the results are analyzed and discussed.

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Authors and Affiliations

  1. School of Civil and Environmental Engineering, Nanyang Technological University, Singapore, 639798, Singapore

    Youjun Ning, Xinmei An & Guowei Ma

  2. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, China

    Youjun Ning & Jun Yang

  3. School of Civil and Resource Engineering, University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia

    Guowei Ma

Authors
  1. Youjun Ning
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  2. Jun Yang
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  3. Xinmei An
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  4. Guowei Ma
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Correspondence to Guowei Ma.

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Ning, Y., Yang, J., An, X. et al. Simulation of blast induced crater in jointed rock mass by discontinuous deformation analysis method. Front. Archit. Civ. Eng. China 4, 223–232 (2010). https://doi.org/10.1007/s11709-010-0022-5

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  • DOI: https://doi.org/10.1007/s11709-010-0022-5

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