Numerical simulation of blast-induced cracks in rock

XIA Xiang; LI Hai-bo; LI Jun-ru; XIAO Ke-qiang; TANG Hai; MA Guo-wei

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Numerical simulation of blast-induced cracks in rock

更新时间：2026-06-25

- Numerical simulation of blast-induced cracks in rock
- Vol. 27, Issue 11, (2006)
- 作者机构：
  
  1. 中国科学院武汉岩土力学研究所,武汉,430071
  2. 南洋理工大学土木与环境学院,新加坡,639798
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU458
- Online First：04 December 2013，
  
  Published：2006
- 稿件说明：
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XIA Xiang, LI Hai-bo, LI Jun-ru, et al. Numerical simulation of blast-induced cracks in rock[J]. 2006, 27(11).
DOI：

XIA Xiang, LI Hai-bo, LI Jun-ru, et al. Numerical simulation of blast-induced cracks in rock[J]. 2006, 27(11). DOI：

摘要

利用广东岭澳核电站现场角岩岩体的基本动态力学特性和爆破参数，以及材料的Von Mises破坏准则，通过ANSYS/ LS-DYNA程序模拟了岩体单孔柱状装药的爆破破裂过程，分析了岩体爆破裂纹产生和扩展的机制，得到了岩体粉碎区和裂隙区的范围以及爆源近区岩体质点峰值压力的衰减规律。研究结果表明，岩体爆破粉碎区半径约为装药半径的6.5倍，裂隙区的半径约为装药半径的75倍，炸药起爆时粉碎区形成时间很短，大约为80 μs，而裂隙区的完全形成则需要较长的时间。

Abstract

The formulation and evolution of blast-induced cracks in rock are simulated by .ANSYS/LS-DYNA programs. Based on dynamical characteristics of hornstone and Von Mises failure criteria of rock-like materials

the sizes of crushing zone and fracture area are obtained. The mechanism of crack formulation in rock blasting is also analyzed; and attenuation characteristics of maximum pressure are also given. It is found that the radius of crushing zone in rock is approximately 6.5 times of the cylindrical charge

while the radius of fracture area is approximately 75 times of the cylindrical charge. The crushing zone forming process is rapid

lasting nearly 80 μs

but the fracturing zone process host long time. After crushing zone formed

tangential fractures will appear around.

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State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences

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