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Optimization on cut-hole of mining tunnel excavation 被引量:7
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作者 ZHOU Chuan-bo WANG peng +1 位作者 LEI Yong-jian YIN Xiao-peng 《Mining Science and Technology》 EI CAS 2009年第1期70-73,共4页
The efficiency of excavation a mining tunnel is definitely linked with modes of cut-holes. According to experience and methods of engineering analogy, the double-wedge cut, the 9-hole cut and the single spiral cut wer... The efficiency of excavation a mining tunnel is definitely linked with modes of cut-holes. According to experience and methods of engineering analogy, the double-wedge cut, the 9-hole cut and the single spiral cut were determined originally by considering the production conditions and blasting environment of the mining tunnels of the-74 m horizontal in the Da-ye iron mine. Based on acquired modes of cut-holes, the effect of the cut was studied, on the one hand, by a numerical simulation method with the aid of LS-DYNA3D, a nonlinear dynamic finite element program; on the other hand, a spot experiment was carried out in the mining tunnels. Both the numerical simulation and the spot experiment demonstrated and agreed that a single spiral cut provides the optimum excavation effect. 展开更多
关键词 mining tunnel excavation cut-hole optimization numerical simulation spot experiment
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