摘要
为解决高海拔地区修筑长大铁路隧道时,低气压、高寒缺氧环境条件下隧道通风技术难题,以兰新铁路第二双线甘青段祁连山隧道为例,结合原通风设计方案,基于洞内多位置与多组点大气压力、温度、相对湿度以及各组风机运行时各测点风速等参数测试数据,通过理论方法计算隧道施工过程实际需风量,从而对既有施工通风方案进行优化。经现场验证,采用优化后的高海拔隧道施工通风方案,提高了施工人员和机械设备工作效率,技术可行、经济性好。研究成果可为高海拔寒区隧道施工通风系统设计提供参考。
In order to solve the technical problems of ventilation when constructing railway tunnels at high altitude,low pressure and lack of oxygen,this paper takes the Qilian Mountain Tunnel of Gan-Qing section of the second double line of Lanzhou-Xinjiang Railway as an example and relies on the original ventilation design scheme,designs an optimized ventilation scheme for the existing construction of high-altitude tunnels based on the parameter test data such as atmospheric pressure,temperature,relative humidity at multiple locations and multiple points in the tunnel,as well as wind speed at each measuring point when each group of fans is running,and obtains the required air volume of the tunnel in the process of actual construction through theoretical calculations.After on-site verification,the optimized ventilation scheme for high altitude tunnel construction has improved the efficiency of construction personnel and mechanical equipment,and is technically feasible and economical.The research results can provide reference for the design of ventilation system for tunnel construction in high-altitude cold areas.
作者
刘王平
LIU Wangping(China Railway 20th Bureau Group Co.Ltd.,Xi′an Shaanxi 710016,China)
出处
《铁道建筑技术》
2024年第2期143-147,共5页
Railway Construction Technology
基金
中铁二十局集团有限公司科技研发项目(2019-A04)。
关键词
隧道工程
高海拔
缺氧
施工通风
方案优化
tunnel engineering
high altitude
hypoxia
construction ventilation
scheme optimization
