Abstract:

The Futian Station and adjacent interval tunnels on GuangzhouShenzhenHongkong Passengerdedicated Line are singletube doubleline tunnels characterized by high speed, large crosssection, small blocking ratio, low piston effect and large heat dissipation. In order to ensure the personnel comfortable requirements inside the tunnel, the key technologies of controlling the temperature and fresh air inside the tunnel should be solved. The setting of piston shafts of intervals and station, shaft area and volume of exhaust air are studied. Some conclusions are drawn as follows: 1) Five piston shafts should be set inside the tunnel in total, namely shaft No. 1 and No. 2 on Yitian Road, one on both ends of Futian Station and one in Huanggang Park. 2) The shaft area on both ends of Futian station is 60 m2 respectively; and the other three are 40 m2 respectively. 3) The air exhausting volume of Futian Station is 540 m3/s. 4) The optimized highest temperature inside the tunnel is 39.3 ℃; and the perperson ventilation rates is 76 m3/h, which coincides with the design standards.

Key words: underground station of passengerdedicated line, interval tunnel, ventilation system, optimization