화약ㆍ발파 (Explosives and Blasting)

대한화약발파공학회 (Korean Society of Explosives and Blasting Engineering)
권호 표지

디커플링 조건 및 폴리머 겔 적용에 따른 발파공 발파위력 영향에 관한 수치해석 연구

Study on Blast Effects of Decoupling Condition and Polymer Gel Coupling in Single Blast Hole by Numerical Analysis

  • 고영훈 (전남대학교 에너지자원공학과) ;
  • 정승원 (전남대학교 에너지자원공학과) ;
  • 양형식 (전남대학교 에너지자원공학과)
  • 투고 : 2018.05.30
  • 심사 : 2018.06.21
  • 발행 : 2018.06.30
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초록

폴리머 겔의 발파 효과를 평가하기 위해 AUTODYN을 이용한 단일 발파공 모델 시뮬레이션을 수행하였다. 발파공 내부 에멀젼 폭약과 공벽간의 채움재는 공기와 폴리머 겔을 적용하여 서로 결과를 비교하였으며, 디커플링 지수 1.0인 밀장전과 디커플링 지수 1.25, 1.56에 대해 각각 해석하였다. 폴리머 겔의 발파 효과 평가를 위한 기준은 밀장전 case를 기준으로 하였다. 해석 결과로서 석회석 모델의 파쇄 및 균열 발생에서 공기보다 폴리머 겔 적용의 경우가 높은 파쇄 정도를 나타냈고, 지정 게이지에서의 최고압력 또한 공기의 경우보다 폴리머 겔 적용이 높은 수치를 보였다.

In this paper, AUTODYN blasting simulation of single blast hole were conducted to evaluate the blasting effects of Polymer Gel. The coupling mediums used as the filling material around an explosive charge were air and gelatin. each simulation case was D I(decoupling index) 1.0, 1.25, 1.56 with air or polymer gel coupling materials. In order to evaluate blast effects full charge model was used as a reference for evaluation of blasting effects. The results of numerical analysis showed that fragmentation of a limestone model of were much more fractured by polymer gel medium than by air medium. As expected, the transmitted peak pressure was higher polymer gel coupled model than in air medium.

키워드

참고문헌

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