混合式通风在特长公路隧道施工中的应用  

Application of Hybrid Ventilation in the Construction of Extra-long Highway Tunnels

作　　者：胡立伟 陈洁金[2] 胡敏[2] HU Liwei;CHEN Jiejin;HU Min(Guangxi Road and Bridge Engineering Group Co.,Ltd.,Nanning,Guangxi 530200,China;Changsha University of Science&Technology,Changsha,Hunan 410114,China)

机构地区：[1]广西路桥工程集团有限公司,广西南宁530200 [2]长沙理工大学,湖南长沙410114

出　　处：《公路工程》2024年第4期1-5,50,共6页Highway Engineering

基　　金：国家自然科学基金青年项目(51908065);湖南省教育厅科学研究项目"优秀青年项目"(20B010)。

摘　　要：新建的桂林-恭城-贺州高速公路大观亭隧道长5642 m,隧址区穿越海洋山自然保护区,不设施工斜井,因此工程建设能否顺利开展取决于施工通风效果。经过比选常用的机械通风方式,结合大观亭隧道的工程实际,最终采用压入式、混合式通风相结合的通风方式适配不同阶段的施工;通过计算隧道各工况需风量、风管通风阻力,确定风机供风量、风压与功率,对施工通风风机进行适配,并确定具体的施工通风方案,较好地解决了特长公路隧道施工过程中缺乏坑道辅助施工的通风问题。The newly built Guilin-Gongcheng-Hezhou Expressway Daguanting Tunnel is 5642 m long,and the tunnel site area crosses the Ocean Mountain Nature Reserve,and there is no facility for inclined shafts,therefore,whether the construction of the project can be carried out smoothly depends on the effect of construction ventilation.After comparing the commonly used mechanical ventilation methods,combined with the engineering reality of the Daguanting Tunnel,the ventilation method combining press-in and mixed ventilation is finally adopted to adapt to the construction of different stages;By calculating the air volume required for each working condition of the tunnel,the ventilation resistance of the duct,and determining the air supply volume,wind pressure and power of the fan,so as to adapt the construction ventilation fan,and determine the specific construction ventilation plan,it better solves the ventilation problem of lack of pit auxiliary construction in the construction process of the long highway tunnel.

关 键 词：施工通风 特长隧道 通风方式 通风设备 

分 类 号：U455[建筑科学—桥梁与隧道工程]