基于LS-DYNA 的间柱开采贫损爆破控制技术

doi:10.3981/j.issn.1000-7857.2014.h2.011

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Abstract: In a certain underground lead-zinc mine, an urgent task is to decrease the dilution and the loss of the pillar stope mining as much as possible and to mine the pillar mineral resources fully. In order to control the stope complicated boundary, the explicit dynamic analysis software LS-DYNA is used for the numerical simulation optimization of the charging structure of side holes,and the spacings of sides and both ends of pillar stopes. The comparison of the x-direction vibration velocity variances of four interval charging structure plans at the boundary measurement points shows that the blasting vibration is the most uniform by the optimal hole charging structure scheme with the interval proportion of 0.588. The optimal hole spacings of sides and both ends are, respectively, 1.6 m and 1.2m with the minimum destruction of rock and backfill based on the Fourth Strength Theory. Applying the research result to the trial pillar stope, the feasibility of the pillar stope dilution and loss control is verified

Key words： spillar stope blasting control charge structure side hole spacing LS-DYNA dilution and loss

Received: 08 April 2014

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	LUO Zhouquan
	QI Feixiang
	TAN Langlang

Cite this article:

LUO Zhouquan,QI Feixiang,TAN Langlang. Dilution and Loss Blasting Control of Pillar Mining Based on LS-DYNA[J]. Science & Technology Review, 2014, 32(28/29): 79-84.

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http://www.kjdb.org/EN/10.3981/j.issn.1000-7857.2014.h2.011 OR http://www.kjdb.org/EN/Y2014/V32/I28/29/79

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