• Proceedings of the Korean Society for Rock Mechanics Conference
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• 2004.04a
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• pp.47-59
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• 2004

본 연구에서는 동해고속도로 설계시 나타난 연속터널을 대상으로 하여 터널내 오염농도 해석 및 터널내 오염농도의 거동 및 터널 갱구부 주변의 오염물질의 재유입 여부를 분석하여, 연속터널에 대한 터널내 외부유동에 대한 환기영향을 검증하였다. 또한 연속터널 연결부에서의 캐노피 설치방안, 결빙대책 및 조도순응대책 등을 검토하여 연속터널에서의 환기 및 방재특성을 고려한 합리적인 고속도로설계가 되고자 하였다.

• Journal of Korean Tunnelling and Underground Space Association
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• v.5 no.2
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• pp.115-134
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• 2003

Recently, there are many cases in the roadway design for successive tunnel with small distance between two tunnels. In this case, the degree of interference for successive tunnels is a significant consideration in the design of ventilation systems. Also, Re-inflows of contaminated air in successive tunnel make serious ventilation problems in case of fire accident in the tunnel. In this study, for successive tunnels in Donghae highway project, the concentration of contaminant such as CO, NOx and Smoke were calculated by numerical analysis using 1D and 3D-CFD analysis. And, the rate of re-inflow at the portals of successive tunnel according to the direction of wind were analysed.

• Journal of Korean Tunnelling and Underground Space Association
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• v.2 no.2
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• pp.22-31
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• 2000

This study aimed at investigating the influence of tunnel length and area, drag coefficient, train velocity on the characteristics of ventilation in railway tunnel. The modified Subway Environment Simulation(SES) computer program has been used to calculate the flow velocity and longitudinal emission concentration with various condition. According to a series of numerical simulation, the influence of various parameter on maximum air flow velocity, purging length and emission concentration are estimated.

• The Journal of Engineering Geology
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• v.29 no.2
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• pp.113-122
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• 2019

In this study, the flow analysis to evaluate the extent of groundwater decline and the effect of the small valleys caused by the decrease of groundwater level in the construction of road tunnel, and the pollutant movement analysis to evaluate pollution of nearby water source by pollutant discharge during tunnel construction, respectively. The decrease of the groundwater during the 30 month tunnel excavation period was maximum 27 m and it was found to be the largest within 50 m from the tunnel center. The flow of groundwater is shown in the form of flowing into the tunnels and the effects of groundwater level decline were observed up to a tunnel radius of 200 m. As a result of the numerical modeling of the contaminant transport to examine the influence of the polluted water discharge from the tunnel, the range of the turbid water generated at the end of the tunnel is up to 120 m and it is estimated that the risk of contamination of the small river is not large.

• Journal of Korean Society of Environmental Engineers
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• v.22 no.4
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• pp.785-796
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• 2000

In this study, the possibility of application of TUNVEN model was investigated through the validation and calibration processes. In order to validate and calibrate the TUNVEN model developed in USA to obtain prediction of the quasi-steady state longitudinal air velocities and the pollutants concentrations by solving the coupled one-dimensional steady state tunnel aerodynamic and advection equations. The major input parameters such as the concentration data for CO and $NO_x$, meteorological data and traffic volume in Hawngryung tunnel were measured. Prior to preparing the input parameters, the sensitivity analysis was conducted to identify the input parameters which need to be most accurately estimated in TUNVEN program. In order to establish the relationships between the model values and the measured values, the linear regression analysis was applied. In linear regression analysis, the model values were taken as independent parameter(X) and the measured values were taken as dependent parameter(Y) for four cases of data sef. From the results of linear regression analysis, the correlation coefficient(r) for four cases were calculated more than 0.91 and the values of slope and interception were analyzed as 0.5~2.2 and 0.01~2.3 respectively. From the above results, we concluded that the suitability of TUNVEN model was identified in prediction the longitudinal pollutant concentrations in tunnel.

• Magazine of korean Tunnelling and Underground Space Association
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• v.5 no.1
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• pp.39-46
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• 2003

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.24 no.4
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• pp.149-155
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• 2010

This paper was carried out to estimate pollution levels of various insulators in tunnel and establish cleaning period in each tunnel section. We estimate pollution level that is attached to insulators in environmental pollution area, industrial area, salt damage area. These results that the pollution quantity and conductivity were increased by pollution accumulation period. However, the conductivity showed each other big difference in each tunnel. In particular, the conductivity showed big in environmental pollution(tunnel A) and salt damage(tunnel C) area, It is considered to prevent accident that manage establishing periodic state of cleaning plan. Also, the Grease that spread on the insulator surface in existing is considered that it can prevent accident for long-term by restrain use.

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.30 no.7
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• pp.24-28
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• 2001

터널 환기 설비는 터널에서 발생하는 오염물질을 희석 배출하여 터널에서의 안전운행 및 쾌적한 환경을 유지함을 목적으로 한다. 이를 위해서 각종 환기설비가 필요하게 되며, 이에 대한 설계 검토가 요구되고 있다. 본 원고에서는 제트팬 방식의 터널에서 풍속 측정을 중심으로 하여 측정결과 및 분석결과를 소개하고자 한다.

• Proceedings of the Korean Society for Rock Mechanics Conference
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• 1996.03a
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• pp.107-118
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• 1996

최근 급격히 장대화 하고 있는 차량 터널의 효율적 건설 및 운영을 위하여 관련 기본 요소 기술 중 특히 국내 기술 수준이 낙후한 분야 중의 하나인 환기 시스템 설계 기술에 대한 관심이 높아지고 있다. 외국의 경우에 비하여 상대적으로 늦긴 했으나 1990년 환경처가 지하 공간 환경 기준 권고치를 설정 발표함으로써 보사부의 공중 위생법, 건설부의 도로법, 노동부 고시 등에 의한 관리 대상이던 터널 내 오염 물질도 직접적인 규제 대상이 되었다. (중략)

• Magazine of korean Tunnelling and Underground Space Association
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• v.16 no.5
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• pp.40-50
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• 2014