青岛地铁8号线跨海区间通风排烟方案研究
Study on ventilation and smoke exhaust scheme for cross-ocean tunnel of Qingdao Metro Line 8
摘要：
研究了青岛地铁8号线大洋站至青岛北站的超长跨海区间通风排烟方案。通过在海域中部设置轨顶风口，经轨顶风道连接至陆域段1号区间风井的事故风井处，有效解决了海域中部无法设置区间风井的难题。同时，将跨海区间分成4个纵向通风区段，保证正常运行时一个通风区段内只有一辆列车运行的要求。基于SES模拟分析，采用一种阻塞模式满足多种复杂阻塞工况需求，简化的区间阻塞模式降低了综合监控系统控制难度，同时提高了现场调试效率。该工程轨顶风道长约2.5 km，采用隧道风机串联的方式以满足其大风压的要求，为超长跨海（江）区间的设计提供参考。
Abstract：
Studies the ventilation and smoke exhaust scheme of the long cross-ocean tunnel from Dayang Station to Qingdao North Station of Qingdao Metro Line 8. By setting the rail top vent and the top air duct which connects the middle of the sea area to the accident air shaft of No.1 section air shaft in the land section, the problem that the section air shaft cannot be set in the middle of the sea area is effectively solved. Meanwhile, divides the cross-ocean tunnel into four longitudinal ventilation sections to ensure that there is only one train running in a ventilation section during normal operation. Based on SES simulation analysis, adopts a blocking mode to meet the needs of various complex blocking conditions. The simplified blocking mode reduces the control difficulty of the ISCS (integrated supervisory control system) and improves the efficiency of on-site debugging. Due to the 2.5 km long top air duct, the tunnel fans are connected in series to meet the requirements of high wind pressure, which provides a reference for the design of the ultralong cross-ocean tunnel.
Keywords:metro, cross-ocean tunnel, ventilation and smoke exhaust scheme, blocking mode, subway environment simulation (SES)