›› 2003, Vol. 24 ›› Issue (6): 969-973.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study on dynamic unloading effect during process of fragmentizing rock by blasting

XU Hong-tao, LU Wen-bo   

  1. State key Laboratory of Water Resources and Hydropower Engineering Science，Wuhan University, Wuhan 430072, China
  • Received:2002-07-15 Online:2003-12-10 Published:2014-08-19

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Abstract: Based on the analytical solution of sphere cavity loaded with instantaneous load in elastic medium, the influence of dynamic unloading of blasting load on the stress distribution in the medium is studied; then the role of dynamic unloading effect in the process of fragmentizing rock by blasting is discussed further. Some phenomena observed in blasting engineering could be explained with the dynamic unloading effect proposed. Finally the necessity of further studying dynamic unloading effect is illustrated.

Key words: dynamic unloading, effect fragmentizing, rock mechanism, loosened zone

CLC Number: 

  • O 382.+2
  • 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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