›› 2006, Vol. 27 ›› Issue (11): 1987-1991.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Numerical simulation of blast-induced cracks in rock

XIA Xiang1, LI Hai-bo1, LI Jun-ru1, XIAO Ke-qiang1, TANG Hai1, MA Guo-wei2   

  1. 1.Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 2.School of CEE, Nanyang Technological University, 639798, Singapore
  • Received:2005-11-09 Online:2006-11-10 Published:2013-12-04

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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.

Key words: crushing zone, fracture area, rock blasting, crack

CLC Number: 

  • TU 458
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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