射流通风技术在大瑶山一号隧道进口段的应用

Application of Jet Ventilation Technology in Entrance Portion of No.1 Dayaoshan Tunnel

射流通风是公路隧道通风的主要方式,对于铁路隧道来说,射流通风技术是一项较新的通风技术。自1988年焦柳线牙己隧道(2528m)首次成功采用射流通风技术以来,该项技术也逐渐在铁路隧道中采用,并有了较快的发展。通过对巷道式通风和射流通风优劣的比较,确定大瑶山一号隧道进口段采用射流通风技术的巷道式通风方式,并给出了详细的通风方案,以及保证通风质量的相关措施。

Jet ventilation is one of the major ventilation modes for highway tunnels, while it is a somewhat new ventilation technology for railway tunnels. Since the first successful application of jet ventilation technology in Yaji tunnel 12 528 m long） on Jiao-Liu railway in 1988, jet ventilation technology has been gradually used in railway tunnels and rapid progress has been made. On basis of comparison of the advantages/disadvantages of gallery ventilation and jet ven- tilation, it is determined that gallery ventilation incorporating jet ventilation technology is adopted for the entrance portion of No. 1 Dayaoshan tunnel. In the paper, detailed ventilation schemes are described and countermeasures to guarantee the ventilation effect are presented.