半互通立交隧道群运营通风方案比选  

Comparison and selection of ventilation schemes for semi-interchange tunnels

作　　者：何小龙 吴志刚 李定越[3] HE Xiaolong;WU Zhigang;LI Dingyue(China Municipal Engineering Central South Municipal Research Institute Co.,Ltd.,Wuhan Hubei 430010,China;不详)

机构地区：[1]中国市政工程中南设计研究总院有限公司,湖北武汉430010 [2]中建铁投集团设计研究院,湖北武汉430052 [3]中铁第四勘察设计院集团有限公司,湖北武汉430063

出　　处：《工业安全与环保》2023年第1期9-13,共5页Industrial Safety and Environmental Protection

摘　　要：厦门疏港通道2号隧道上跨芦澳路隧道,2座隧道之间设4条匝道隧道相连,形成半互通立交关系。半互通立交隧道的运营通风受匝道连通的影响,洞内风流有多处分流、多处汇流,形成复杂的网络通风状态,存在主线与匝道之间、匝道与匝道之间的风流分配不准确等问题;同时匝道两端均连着主线隧道,无通向大气的出口,匝道要从主线隧道内引入经过污染的风流,其供风量将大大增加。经过不同通风方案的比选,确定了“匝道半横向式通风+主洞纵向式通风”的方案,从而达到了简化通风系统、降低通风设备功率、提高通风效果、节约投资及有利于防灾救援的目的。No.2 tunnel of Xiamen Port Channel strides over Lu Ao Road tunnel,four ramp tunnels are connected between the two tunnels,forming a semi interchange relationship of grade seperation.The operational ventilation of the semi-interchange tunnel is affected by ramp connection,and the wind flow inside the cave has multiple diversions and convergences,forming a complex network ventilation state,with problems such as inaccurate distribution of wind flow between the mainline and the ramp,and between the ramp and the ramp;besides,both ends of the ramp are connected to the mainline tunnel,with no exit to atmosphere,and the ramp has to introduce the polluted wind flow from the mainline tunnel,whose air supply will be greatly increased.After the selection of different ventilation schemes,the scheme of"semi-transverse ventilation of ramp+longitudinal ventilation of main cavern"is determined,thus achieving the purpose of simplifying ventilation system,reducing power of ventilation equipment,improving ventilation effect,saving investment and facilitating disaster prevention and rescue.

关 键 词：立交隧道群 网络通风 半横向通风 方案比选 

分 类 号：U453.5[建筑科学—桥梁与隧道工程]