›› 2007, Vol. 28 ›› Issue (4): 795-798.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Observation study of fissure rock damage range under blasting load

XIA Hong-bing1,2, XU Ying2, ZONG Qi2, FU Ju-gen2   

  1. 1. University of Science and Technology of China, Hefei 230026, China; 2. Dept. of Civil Engineering, Anhui University of Science and Technology, Huainan 232001, China
  • Received:2005-05-13 Online:2007-04-10 Published:2013-09-05

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Abstract: Detecing the changes of resistivity in deep holes of fissure rock before and after micro explosive blasting to the limestone in Luyuan Mountain Villa with electrical CT image, a certain range，number and width fissures could develop in deep blasting holes after micro explosive blasting，and areas which were caused by fissures mainly located at about 2/3 depth of the bottom of the blasting holes.when the depth of blasting hole is 3 m, and the explosive weighted 330g ,fissures developed easily at the depth of 1.5-2.5 m of the blasting hole.when the distance between the blasting holes is 1.2-1.5 m, penetration fissures could form in the internal rock, providing scientific basis for blasting engineering design and construction.

Key words: electrical CT image, projectile filling, blasting damage, fissure developing

CLC Number: 

  • TU 459+.3
  • 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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[3] FU Yu-hua, LI Xi-bing, DONG Long-jun. Analysis of smooth blasting parameters for tunnels in deep damaged rock mass [J]. , 2010, 31(5): 1420-1426.
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