›› 2012, Vol. 33 ›› Issue (11): 3278-3284.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Comparison and improvement of blasting damage models for rock

HU Ying-guo1, 2，LU Wen-bo1, 2，CHEN Ming1, 2，YAN Peng1, 2，ZHOU Chuang-bing1, 2   

  1. 1. State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China; 2. Key Laboratory of Rock Mechanics in Hydraulic Structural Engineering, Ministry of Education, Wuhan University, Wuhan 430072, China
  • Received:2012-07-09 Online:2012-11-12 Published:2012-11-14

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Abstract: Several variables of different damage models are listed and compared. Based on a specific project, the accuracy of five blasting damage models which are widely used are tested and compared through the user subroutine interface of LS-DYNA. The results show that the calculated values of KUS and RFPA models are more close to the measured values than other blasting models. Based on the KUS model, considering the compression damage, a modified method to determine the macroscopic elastic parameters is put forward; and then a new tension-compression damage model is established. The accuracy of the new tension-compression damage model is verified. The results show that the new tension-compression damage model can describe the damage effect better.

Key words: damage zone, blasting damage model, comparing, tension-compression damage model

CLC Number: 

  • O 383.1
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