터널내 자연환기력 변화에 따른 오염물질 거동특성 = A study on the behavior characteristics of contaminant with change of natural ventilation force in the read tunnel

다국어 초록 (Multilingual Abstract)

Because of a sudden increase of vehicles, the limit of road capacity occurred. We are, therefore, constructing the road tunnel over l㎞ for the maximization of land use. To supply safe driving conditions in the road tunnel, we are controlling the exhaust emissions with a forced ventilation facility.
The purpose of this study is to investigate the ventilation efficiency and the characteristics of tunnel on the change of natural ventilation force. To carry out this study, Sola program is transformed to fit for the road tunnel and it was simulated. The tunnel with ventilation system of transverse type is used as a objective tunnel.
The results of this study are as follows;
1. The larger a natual ventilation force, the better a ventilation efficiency.
2. It is required the ventilation system dealing with quickly a change of the tunnel surroundings because of accumulation of 5m/sec.
3. The contaminant distributions in the near of ventilation system are highly stagnant in the left-below parts of tunnel, the below parts of air supply system and the below parts of ventilation system.