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2020 Vol.22, Issue 5 Preview Page

Research Paper

Scaled model tests for improvement and applicability of the transverse smoke control system on tunnels

횡류식 제 ‧ 배연 시스템의 개선 및 적용성 분석을 위한 모형실험 연구

Hyo-Gyu Kim1*
,
Doo-San Baek2
,
Jae-Hyun Kim3
,
Seong-Won Lee4
,
Ji-Oh Yoo5
김 효규1*
,
백 두산2
,
김 재현3
,
이 성원4
,
유 지오5
1CEO, JuSung G&B INC.
2Researcher, JuSung G&B INC.
3Senior Researcher, Korea Institute of Construction Technology
4Senior Research Fellow, Korea Institute of Construction Technology
5Professor, Dept. of Automotive Engineering, Shin-Han University
1정회원, (주)주성지앤비 대표이사
2정회원, (주)주성지앤비 대리
3정회원, 한국건설기술연구원 선임연구위원
4정회원, 한국건설기술연구원 수석연구원
5정회원, 신한대학교 자동차공학과 교수
* Corresponding Author
30 September 2020. pp. 563-574
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Abstract

Currently, road tunnels and railroad tunnels are building smoke control systems to emit toxic gases and smoke from fires. Among the various smoke control systems, the transverse smoke control system has the disadvantage that air supply or exhaust is performed on only half of the cross-section, rather than air supply or exhaust on the entire cross-section of the tunnel as air is supplied or exhausted by partitioning the wind path. Therefore, this study analyzed the effect of exhaustion through numerical analysis and scaled model tests on the zoning smoke control system, which improved the limitations of the transverse smoke control system. As a result of the scaled model test, the transverse ventilation system exhibited a 25.6% smoke control rate based on the state where no smoke was controled, and zoning smoke control system showed a smoke control rate of 40.8%. In addition, as a result of numerical analysis, it was found that transverse ventilation system did not control fire smoke spreading from the tunnel and continued to spread. On the other hand, zoning smoke control system was found to be smoke controled within a certain section due to the air curtain effect and the flue gas effect.

Keywords
Tunnel exhaust system
Transverse smoke control system
Zoning smoke control system
Scaled model tests

현재 도로터널과 철도터널에서는 화재시 발생한 유독가스 및 연기를 배출하기 위하여 제 ‧ 배연시스템을 구축하고 있다. 다양한 제 ‧ 배연 시스템 중 횡류식 제 ‧ 배연시스템은 풍도의 중간을 구획하여 급기 또는 배기를 수행함에 따라 터널 본선 전단면에 급기 또는 배기가 되는 것이 아니라 터널 본선의 절반 부분만 급기 또는 배기가 수행되는 단점을 지니고 있다. 따라서 본 연구에서는 횡류식 제 ‧ 배연시스템의 한계점을 개선한 조닝방식에 대하여 수치해석과 모형시험을 통해 제 ‧ 배연 효과를 분석하였다. 모형시험의 결과 제 ‧ 배연이 이루어지지 않은 상태를 기준으로 횡류식 제 ‧ 배연시스템은 25.6%의 배연율을 나타내었고, 조닝을 통한 제 ‧ 배연시스템은 40.8%의 배연율을 나타내었다. 또한 수치해석결과 횡류식 제 ‧ 배연시스템은 본선터널에서 확산되는 화재연기를 차단하지 못하고 지속적으로 확산 되는 양상을 보이는 것으로 나타났다. 한편, 조닝방법을 통한 제 ‧ 배연시스템은 에어커튼 효과 및 배연 효과로 인하여 화재연기가 일정구간 내에 제연 되는 것으로 나타났다.

키워드
터널 배연 시스템
횡류식 제 ‧ 배연 시스템
조닝을 통한 제 ‧ 배연 시스템
모형시험
References
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Information
  • Publisher :Korean Tunneling and Underground Space Association
  • Publisher(Ko) :한국터널지하공간학회
  • Journal Title :Journal of Korean Tunnelling and Underground Space Association
  • Journal Title(Ko) :한국터널지하공간학회 논문집
  • Volume : 22
  • No :5
  • Pages :563-574
  • Received Date : 2020-07-29
  • Revised Date : 2020-09-04
  • Accepted Date : 2020-09-06
  • DOI :https://doi.org/10.9711/KTAJ.2020.22.5.563
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