Numerical Simulation of Independent Advance of Ore Breaking in the Non-pillar Sublevel Caving Method  

作　　者：ZHOU Chuan-bo YAO Ying-kang GUO Liao-wu YIN Xiao-peng FAN Xiao-feng SHANG Ying 

机构地区：[1]Engineering College, China University of Geosciences, Wuhan, Hubei 430074, China [2]Ming Company of Wuhan Steel and Iron Unite Company, Wuhan, Hubei 430080, China

出　　处：《Journal of China University of Mining and Technology》2007年第2期295-300,共6页中国矿业大学学报（英文版）

摘　　要：The mechanism of stress generation and propagation by detonation loading in five separate independent advance of ore breaking patterns is discussed in the paper. An elastic numerical model was developed using AN- SYS/LS-DYNA 3D Nonlinear Dynamic Finite Element Software. In this package ANSYS is the preprocessor and LS-DYNA is the postprocessor. Numerical models in the paper to actual were l：10 and the element mesh was dissected in scanning mode utilizing the symmetry characteristics of the numerical model. Five different advance rates were studied. Parameters, such as the time required to maximum stress, the action time of the available stress, the maximum velocity of the nodes, the stress penetration time, the magnitude of the stress peak and the time duration for high stress were numerically simulated. The 2.2 m advance appeared optimum from an analysis of the simulation results. The results from numerical simulation have been validated by tests with physical models.The mechanism of stress generation and propagation by detonation loading in five separate independent ad-vance of ore breaking patterns is discussed in the paper. An elastic numerical model was developed using AN-SYS/LS-DYNA 3D Nonlinear Dynamic Finite Element Software. In this package ANSYS is the preprocessor and LS-DYNA is the postprocessor. Numerical models in the paper to actual were 1:10 and the element mesh was dissected in scanning mode utilizing the symmetry characteristics of the numerical model. Five different advance rates were stud-ied. Parameters,such as the time required to maximum stress,the action time of the available stress,the maximum ve-locity of the nodes,the stress penetration time,the magnitude of the stress peak and the time duration for high stress were numerically simulated. The 2.2 m advance appeared optimum from an analysis of the simulation results. The re-sults from numerical simulation have been validated by tests with physical models.

关 键 词：non-pillar sublevel caving method independent advance of ore breaking numerical simulation model test 

分 类 号：TD8[矿业工程—矿山开采]