소단면 기존 철도터널에서 통풍공 개수에 따른 터널내 풍압변동 저감효과에 대한 연구

The effect of air-shafts on reducing the pressure fluctuations in the tunnel with small cross sectional area on conventional line

The purpose of present study is to investigate for reducing pressure fluctuations in tile case of installing tile air-shafts on the side wall of the tunnel with small cross-sectional area on conventional line. Experiments were performed with a 1/61-scale moving model rig for the tunnel of 0.764km length in the condition of tunnel cross-section area of 28 ㎡ According to the results, the maximum pressure fluctuation is reduced by 45% for 19 air-shafts. This results have the speed-up effects of about 33.4km/h for the train running in tunnel.