特长跨海公路隧道竖井组协同风量与防排烟设计研究  

Research on collaborative airflow and smoke control design for vertical shaft groups in extra-long cross-sea highway tunnels

作　　者：姜学鹏[1,2,3] 屈裕坤 袁丁 JIANG Xuepeng;QU Yukun;YUAN Ding(Institute of Safety and Emergency,Wuhan University of Science and Technology,Wuhan 430081,China;Research Center of Fire Safety,Wuhan University of Science and Technology,Wuhan 430081,China;School of Resource and Environmental Engineering,Wuhan University of Science and Technology,Wuhan 430081,China)

机构地区：[1]武汉科技大学安全与应急研究院,武汉430081 [2]武汉科技大学消防安全研究中心,武汉430081 [3]武汉科技大学资源与环境工程学院,武汉430081

出　　处：《安全与环境学报》2024年第12期4598-4607,共10页Journal of Safety and Environment

基　　金：国家自然基金面上项目(51874213);湖北省重点研发计划项目(2020BCB072)。

摘　　要：青岛第二海底隧道首创性地在两管隧道排烟道上纵向间隔设置联络烟道,将南北线烟道联通,以提高通风效率。因此,亟须明确不同竖井组协同风量对联络烟道风量的影响规律,确定最佳的南北线风量配比和两线竖井风量配比。对比不同风量配比对联络烟道风速、利用率的影响,结果表明,南北线风量配比的变化对联络烟道风速的影响较小,但能一定程度上缓解南北两线隧道因两侧风量相同而相互抽吸导致的隧道中心位置风速过低的情况。两线的风量配比对联络烟道风速有较大影响,当两线竖井风量配比由5∶5逐渐变化到2∶8时,联络烟道中间排烟道平均风速由0.89 m/s提升到1.18 m/s,提升幅度约为32.58%,联络烟道利用率由41.18%提升到54.75%,推荐使用不均衡的两线竖井风量配比模式,两线竖井风量配比为2∶8时具有最高的联络烟道利用率。并采用缩尺寸模型试验,验证了该风量配比设计的合理性。The second underwater tunnel in Qingdao has pioneered the installation of longitudinally spaced connecting flues on the smoke exhaust ducts of both tube tunnels,linking the north-south flues to enhance ventilation efficiency.Therefore,it is essential to clarify the impact of collaborative airflow from different vertical shaft groups on the air volume and velocity in the connecting flue.Additionally,it is crucial to determine the optimal air volume ratio between the north and south lines,as well as the ideal air volume ratio between the two vertical shafts.By comparing the effects of different air volume ratios on the wind speed and utilization rate of the connecting flue,it was found that variations in the air volume ratio between the north and south lines have a relatively minor impact on the wind speed of the connecting flue.However,it can somewhat alleviate the issue of low wind speed at the center of the tunnel,which occurs due to mutual suction caused by equal air volumes on both sides.The air volume ratio between the two lines significantly affects the wind speed within the connecting flue.As the air volume ratio between the two vertical shafts shifts from 5:5 to 2:8,the average wind speed in the middle exhaust duct of the connecting flue rises from 0.89 m/s to 1.18 m/s,representing an increase of approximately 32.58%.The utilization rate of the connecting flue also increases from 41.18%to 54.75%.Therefore,it is advisable to adopt an unbalanced air volume ratio mode for the two vertical shafts.The optimal utilization rate of the connecting flue is attained with an air volume ratio of 2:8 between the two vertical shafts.The validity of the air volume ratio design was confirmed through reduced-scale model experiments.

关 键 词：安全工程 联络烟道 协同风量 风量配比 联络烟道利用率 防排烟设计 

分 类 号：X959[环境科学与工程—安全科学]