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수치해석 기법을 이용한 발파전색재료 및 플러그 장치의 폭발압 저항 효과에 관한 연구
고영훈 ( Younghun Ko ),곽기석 ( Kiseok Kwak ),서승환 ( Seunghwan Seo ),정영준 ( Youngjun Jeong ),김식 ( Sik Kim ),정문경 ( Moonkyung Chung ) 대한화약발파공학회 2022 화약발파 Vol.40 No.2
본 연구에서는 발파전색재료와 밀폐용 플러그 장치의 압력 구속 효과를 평가하기 위하여 충격챔버 모델을 구성하여 발파 수치해석을 수행하였다. 현재 개발 중인 전단농화유체 기반의 전색물질과 일반적으로 사용되고 있는 전색재료인 모래의 전색효과를 서로 비교하였다. 또한 발파공 내부압력의 구속효과 강화를 위한 세 가지 형태의 플러그 장치를 시뮬레이션에 적용하였다. 그 결과로서 전단농화유체 기반의 전색재료가 모래전색보다 전색효과가 더 우수한 것으로 나타났다. 또한 전단농화유체 기반의 전색물질과 플러그 장치를 복합적으로 사용하였을 때 발파공 내의 폭발가스의 작용 시간과 영향범위를 효과적으로 향상할 수 있을 것으로 분석되었다. Numerical simulation is the most widely used methods for evaluating blasting performance. This study, conducted the numerical analysis of shock chamber model to evaluate the pressure confine effect of the stemming material and plug device. The stemming effect was compared and evaluated with that of the STF-based stemming material currently under development and sand, which is a commonly used blast stemming material. Furthermore, to verify of enhancement the confine effect inside blast hole pressure, three types of stemming plugs were adopted for the numerical analysis. The numerical simulation results revealed that the STF-based stemming materials were superior to the general stemming material. Also, It is evaluated that the STF-based stemming and Plug system can not only prevent detonation gas from overflowing the borehole prematurely, but also prolong the action time and scope of detonation gas in the borehole effective.
생물안전시설 BL3 및 BL4 등급에서 효율적 검증 및 재확인 개선방안에 관한 연구
김영득(Young Deug Kim),이성재(Sung Jae Lee),정영준(Youngjune Jeong),이성근(Sung-Geun Lee),백상훈(Sang Hoon Baek) 대한설비공학회 2022 대한설비공학회 학술발표대회논문집 Vol.2022 No.11
This paper is a study on the improvement of efficient verification and reconfirmation of the existing BL3 and BL4 sealed research facilities in biosafety facilities.So far, there are voices in the field that the initial verification of BL3 and BL4 research facilities and the reconfirmation of the three-year cycle do not meet the rational operation of the facility operating institution and the economic service of the maintenance company. There is a purpose. Therefore, undesirable factors were developed from those involved in the operation and maintenance of the research facility, compared through data surveys from overseas related institutions, and opinions were collected through the advisory committee. In addition, by comparing and reviewing the results, the number of items subject to operation and maintenance was reduced to the basis of biosafety and engineering, and improvement measures were prepared through rational and efficient verification and reconfirmation items, methods and procedures.