单线特长高铁隧道斜井长距离多工作面通风方案优选研究  

Research on Optimization of Ventilation Plans of Single Track Extra Long High-speed Railway Tunnel Inclined Shaft with Long Distance and Multiple Working Faces

作　　者：文凯[1] 姬传军 WEN Kai;JI Chuanjun(China Railway 18th Bureau Group Third Engineering Co.,Ltd.,Zhuozhou,Hebei072750,China)

机构地区：[1]中铁十八局集团第三工程有限公司,河北涿州072750

出　　处：《施工技术（中英文）》2024年第19期93-98,共6页Construction Technology

基　　金：中国铁路总公司科技研究开发计划(P2018G048)。

摘　　要：秦岭马白山隧道属于特长双洞单线高铁隧道,其2号斜井工区共下辖斜井及正洞左右线大小里程5个工作面。针对工期紧、多工作面施工、洞内环境复杂的情况,隧道通风方式选择及通风效果关系到隧道施工进度、施工人员身体健康、工程造价等方面,因此选取合理的通风方式尤为重要。采用理论分析和数值模拟相结合的方法,建立三维数值模型,对施工通风的相关参数和隧道多工作面施工通风方案进行选型研究。通过理论计算,分析不同方案下风速和气体运移扩散规律,选配满足要求的通风机型及配置台数,解决了多工作面施工过程中风筒的布置问题。The Mabaishan Tunnel in the Qinling Mountains is an extra-long double-hole single-line high-speed railway tunnel.No.2 inclined shaft work area has a total of five working faces of the inclined shaft and left and right lines of the main tunnel.In view of the tight construction period,multi-face construction,and complex environment in the tunnel,the selection of tunnel ventilation methods and ventilation effects are related to the tunnel construction progress,the health of workers,and the cost of project.Therefore,it is particularly important to select a reasonable ventilation method.By combining theoretical analysis and numerical simulation,a three-dimensional numerical model was established,and the relevant parameters of construction ventilation and the selection of a construction ventilation scheme for the multi-working face of the tunnel were studied.Through theoretical calculation,the law of wind speed and gas migration and diffusion under different schemes is analyzed,and the fan type and configuration number that meet the requirements are selected to solve the layout problem of the air duct in the construction process of multiple working faces.

关 键 词：隧道 斜井 通风 数值模拟 风速 空气流场 

分 类 号：U459[建筑科学—桥梁与隧道工程]