Browse > Article

Determination of Combustion Propagation Velocity of Thermite Reaction Mixture Using Continuous VOD Measurement System  

Kim, Min-Seong (전북대학교 자원.에너지공학과)
Kang, Hyeong-Min (전북대학교 자원.에너지공학과)
Jeong, Sang-Sun (구마모토 대학교 사회환경공학과)
Jeong, Yun-Yeong ((주)SOC 엔지니어링 기술연구소)
Park, Hoon ((주)코리아카코)
Cho, Sang-Ho (전북대학교 자원.에너지공학과)
Publication Information
Explosives and Blasting / v.33, no.3, 2015 , pp. 21-28 More about this Journal
Abstract
The objective of this study is to develop a method for monitoring continuously the combustion propagation behavior of commercial thermite reaction mixtures using conventional continuous VOD (velocity of detonation) system. In order to monitor the combustion front propagation with elapsed time during thermite reaction, the VOD system employs two types of commercial VOD probes and one self-made probe: VOD PROBEROD-OS, VOD PROBEROD-HS and VOD PROBEROD-ES, respectively. Among the probes, the only self made VOD PROBEROD-ES successfully demonstrates the velocity of combustion propagation (VOC) with elapsed time. It was found that VOC of the thermite reaction mixture inside a steel tube has been reached around 200m/s within 100mm distance from the ignition and dramatically increased up to about twice the speed of sound in the range between 100mm and 300mm distance. Finally the VOC reached up to around 800m/s. This results imply that it is necessary to use over 300mm long cartridge of thermite reaction mixture in order to achieve normal VOC of the mixture.
Keywords
Thermite reaction mixture; Continuous velocity of detonation (VOD); Velocity of combustion propagation (VOC); Self-made VOD probe;
Citations & Related Records
연도 인용수 순위
  • Reference
1 민형동, 정민수, 박윤석, 황의진, 박준호, 2006, FINECKER Plus를 이용한 도심지 진동제어 시공사례, 화약.발파(대한화약발파공학회지), Vol. 24, No. 1, pp. 49-56.
2 박훈, 석철기, 안중량, 강형민, 정상선, 조상호, 2013, 증기압 파쇄제를 이용한 콘크리트 파쇄 시험, 대한화약발파공학회 추계학술발표회 논문집, 서울, pp. 37-46.
3 안중량, 김승곤, 석철기, 박훈, 이준호, 조상호, 2012, 간이장약홀더를 이용한 콘크리트 말뚝두부의 동적파쇄에서 발생하는 지반진동과 소음에 관한 연구, 대한화약발파공학회 춘계학술발표회 논문집, 서울, pp. 67-71.
4 이종윤, 황연수, 최학용, 배효진, 2010, 도심지 NATM 터널 굴착시 적용된 미진동발파 공법 개선사례, 한국지반공학회 춘계 학술대회, pp. 535-542.
5 Suceska. M., 1997, Experimental determination of detonation velocity, FRAGBLAST - International Journal of Blasting and Fragmentation, Vol, 1, pp. 261-284.
6 Jeong, Y. Y., H. M. Kang, S. H. Choi, and S. H. Cho, 2015, Dynamic expansion rock bolt for rapid installing in rocks, Geosystem Engineering, Vol. 19, No. 2, pp. 85-91.