Browse > Article

The Application of Gassed Bulk Emulsion to Quarry Blasting in Limestone Mine  

Min, Hyung-Dong ((주)한화 화약기술팀)
Jeong, Min-Su ((주)한화 화약기술팀)
Park, Yun-Seok ((주)한화 화약기술팀)
Lee, Eung-So ((주)한화 보음공장)
Lee, Won-Wook (성신양회 단양공장)
Publication Information
Explosives and Blasting / v.25, no.2, 2007 , pp. 61-70 More about this Journal
Abstract
Korean large limestone mines started to employ bulk emulsion explosives to improve the productivity in early 2000s. As the application of the bulk emulsion explosives became common in the mid 2000s, the bulk emulsion application increases overall performance but it tends to decrease the moving and heaving because it lacks in gas volume and heat energy. Therefore, the chemical gassing technique was introduced to improve the blasting efficiency of the existing bulk emulsion explosives. The chemical gassing is a technique to replacing GMB(Glass Micro Balloon), which is used for a sensitizer, with gassing agent to chemically sensitize it. This paper introduces the case of successful application of chemical gassing in a Korean large limestone mine. We also compared and evaluated the blast and work efficiency between bulk emulsion GMB & gassing agent (chemical gassing). The results indicate that the replacement of GMB with gassing agent improved fragmentation in the upper part and toe of a bench as well as moving efficiency of the material.
Keywords
chemical gassing; GMB; fragmentation; toe;
Citations & Related Records
연도 인용수 순위
  • Reference
1 정천재, 2000, 벌크에멀젼 블랜드 폭약의 특성 고찰, 대한화약발파공학회지, Vol. 18. No.3, pp. 15-28
2 (주)한화, 2003, 벌크 에멀젼(HiMEX)폭약의 현장시험 보고서
3 Langefors, U. and B. Kihlstrom, 1978, The modern technology of rock blasting, John Wiley & Sons, New York, 438p
4 (주)한화, 2007, HiMEX Chemical gassing 평가결과 보고서
5 Pal Roy, P., 2006, Rock blasting, effects & operations, A.A Balkema, Leiden, 345p