DOI QR코드

DOI QR Code

Experimental Study for the Capacity of Ordinary and Emergency Ventilation System in Deeply Underground Subway Station

대심도 지하역사 승강장 및 대합실 평상시/비상시 급·배기 풍량에 대한 실험적 연구

  • Received : 2012.08.21
  • Accepted : 2012.11.28
  • Published : 2012.12.31

Abstract

Shin-gumho station in Seoul underground subway have been selected to be experimentally investigated and analyzed for the real air supply & exhaust capacity compared to the original capacity of ordinary and emergency condition. The depth of Shin-gumho station is 43.6m which consists of the island-type platform ($8^{th}$ floor in underground) and a two-story lobby (first & second floor in underground). An emergency staircase connects between the platform and the lobby. Hot-wire anemometer, capture hood, wind vane & velocity meter and data acquisition systems are employed to perform the automatic measurement in this experiment. For ordinary case, air supply and exhaust capacity in the lobby were reduced by 34% and 46% compared to the original capacity, respectively. Air supply and exhaust capacity in the platform were reduced by 66% and 38%, respectively. For emergency case, air supply in the lobby was reduced by 42% and air exhaust in the platform was reduced by 28% compared to the original capacity. Therefore, air pollution in the station is expected to be worse in the ordinary environment and smoke control capability in the platform will be weakened in case of fire emergency.

서울 지하철 지하역사의 평상시 및 비상시(화재시)의 급배기 효율을 조사하기 위하여 대표적인 대심도역사인 신금호 역사를 선정하여 설계 용량 대비 실제 용량을 계측하여 비교분석 하였다. 신금호 역사는 심도가 43.6m(서울에서 3번째 깊이) 이며, 지하8층의 섬식 승강장과 지하 1,2층의 대합실로 이루어져 있다. 승강장과 대합실을 연결하는 통로는 1개의 비상계단을 사용하도록 되어있다. 실험을 위하여 열선유속계, capture hood, 풍향풍속계 및 데이터 수집장치 등을 이용하여 자동 계측하였다. 실험 결과 평상시 대합실에서는 급기량 및 배기량이 설계치에 비하여 실측치가 각각 34% 및 46% 감소된 환기량을 보였으며, 승강장에서는 급기량 및 배기량이 각각 66% 및 38% 감소된 환기량을 보였다. 비상시에서는 대합실에서 급기량이 42% 감소, 승강장에서는 배기량이 28% 감소된 것으로 조사되었다. 따라서 평상시에는 역사에서의 공기질 악화 및 비상시에는 제연능력 약화가 예상된다.

Keywords

References

  1. J.H. Lee, M.D. Oh (1998) Train wind in the subway tunnel, Korean Journal of Air-Conditioning and Refrigeration Engineering, 27(2), pp. 109-114.
  2. J.H. Lee, M. Juraeval, D.J. Song (2010) A Numerical Analysis of The Train Wind in The Ventilation System of Subway Tunnel, 2010 Spring Conference for Korean Society for Computational Fluids Engineering, pp. 212-215.
  3. S.D. Kim, J. H. Song, H.K. Lee (2004) Estimation of Train- Induced Wind Generated by Train Operation in Subway Tunnels, Korean Journal of Air-Conditioning and Refrigeration Engineering, 16(7), pp. 652-657.
  4. B.S. Son, H.C. Chang (2008) Numerical Prediction of Fire Characteristics of Passenger Train Fire in an Underground Subway Tunnel, Depending on Change of Location of Ventilation Facility, Journal of Korean Institute of Fire Science & Engineering, 22(5), pp 1-8.
  5. J.Y. Kim (2008) Development of Optimum Design Technology of Platform Screen Door Systems for the Environment Improvement and Disaster Prevention of Urban Railway, 2008 Winter Conference & Annual Meeting of the Society of Aircondition and Refrigerating Engineers of Korea, pp. 84-87.
  6. H.B. Hwang, S.W. Shin, H.J. Park (2009) A Study on the Evacuation Safety Evaluation using the Fire-Evacuation Simulation in Underground Subway Stations, 2009 Autumn Conference & Annual Meeting of the Korean Institute of Fire Science & Engineering, pp. 177-184.
  7. Y.J. Jang, I.H. Koo, H.B. Kim, J.H. Kim (2011) Simulation of Ventilation Capacity Effect on The Smoke Spread in Railway Station, 2011 Spring Conference & Annual Meeting of the Korean Society for Railway, pp. 1-6.
  8. Y.J. Jang, C.H. Lee, W.H. Park, W.S. Jung (2008) The Passegger Evacuation Simulation Using Fluent and EXODUS, Journal of the Korean Society for Railway, 11(1), pp 95-100.

Cited by

  1. Large eddy simulation of cooling flows in underground subway station according to different psd operating conditions vol.29, pp.12, 2015, https://doi.org/10.1007/s12206-015-1127-5
  2. LARGE EDDY SIMULATION OF ORDINARY & EMERGENCY VENTILATION FLOW IN UNDERGROUND SUBWAY STATION vol.18, pp.3, 2013, https://doi.org/10.6112/kscfe.2013.18.3.072
  3. Analysis of Cooling Air Current and Efficiency of Air Conditioning in the Underground Subway Station with Screen-Door Opening and Closing vol.17, pp.5, 2014, https://doi.org/10.7782/JKSR.2014.17.5.328