›› 2012, Vol. 33 ›› Issue (6): 1883-1888.

• Testing Technology • Previous Articles     Next Articles

Numerical analysis method for optimizing charging structure of deep-hole blasting and its application

LIU You-ping1, 2，GONG Min1，HUANG Gang-hai3   

  1. 1. School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; 2. College of Civil and Structure Engineering, Nanchang Institute of Technology, Nanchang 330099, China; 3. Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
  • Received:2011-10-24 Online:2012-06-11 Published:2012-06-14

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Abstract: There are usually several problems during underground mine’s deep-hole blasting，such as large blasting back impact effect, non-uniform pieces and so on. In order to solve the problems in a southern lead-zinc mine, ANSYS/LS-DYNA is used to build numerical models for six kinds of hole’s charging structure with different charging quantities and different coupling coefficients based on parameters of blasting, explosives and rock in this mine. By analyzing information of Von Mises effective stress of blasting simulation, combining with mechanism of rock crack during blasting and Mises yield criterion, the best hole’s charging structure for deep-hole blasting is determined. In-situ test shows that, the optimized charging structure gets uniform blasting pieces; and back impact effect is controlled effectively. Problems of deep-hole lateral blasting in the mine is basically solved, so as to provide optimization of deep-hole blasting’s design with theoretical foundation and technical support.

Key words: mining engineering, deep-hole blasting, charging structure, ANSYN/LS-DYNA, pieces of blasting, back impact effect

CLC Number: 

  • TD 853
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