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The Effect of Performance on Loading Impact of Emulsion Explosive in Long Vertical Borehole  

Lee, Young-Ho ((주)한화 보은공장)
Lee, Seung-Chan ((주)한화 보은공장)
Lee, Eung-So ((주)한화 보은공장)
Publication Information
Explosives and Blasting / v.25, no.1, 2007 , pp. 45-52 More about this Journal
Abstract
When emulsion explosives(1kg/cartridge) are loaded into a long vertical borehole at open blasting site, they undergo an Impact corresponding to 117.6J of shock energy. After shocking. the crystallization of emulsion nay happen immediately. Furthermore, it nay cause a desensitization, arising from increase in the density of emulsion explosive by the breakage of sensitizer. In this paper, some experimental work was performed using PVC pipe equipment(50mm diameter and 12m lengths) to investigate the effects of loading impart of emulsion explosive. It is shown that detonation energy decreases up to 26% of the normal state value and this effect is less than 3% of the total performance of emulsion explosives in borehole blasting.
Keywords
emulsion explosives; long vertical borehole; loading impact; Performance change;
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  • Reference
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