高海拔隧道施工通风供氧一体化设计方案研究  

Study on Design Scheme of Integrated Ventilation and Oxygen Supply in High Altitude Tunnel Construction

作　　者：姜文涛 JIANG Wentao(China Railway 12^(th)Bureau Group 3^(rd)Engineering Co.Ltd.,Taiyuan Shanxi 030024,China)

机构地区：[1]中铁十二局集团第三工程有限公司,山西太原030024

出　　处：《铁道建筑技术》2023年第5期95-99,108,共6页Railway Construction Technology

基　　金：中铁十二局集团有限公司科技研究开发计划项目(公司技[2022]150号-18)。

摘　　要：为了保障高海拔隧道施工人员的生命安全和内燃机械的高效运作,依托海拔3800 m的某隧道工程提出了通风管路供氧和专用管路供氧两种通风供氧一体化设计方案,计算了不同海拔地区及洞内掌子面的环境参数及两种通风供氧一体化方式的需氧量。采用数值模拟对两种供氧方式的供氧效果进行分析。结果表明:(1)通风管路供氧方式与专用管路供氧方式下的供氧量分别为0.576 m^(3)/s和0.385 m^(3)/s;(2)通风管路供氧方式的流场稳定时间为50~60 s,而专用管路供氧方式的流场稳定时间为60~160 s;(3)通风管路供氧方式的供氧效果好,各测点氧含量均达到供氧目标,而专用管路供氧方式仅当供氧管路布置在风管上方且距离掌子面30 m时才能获得较好的供氧效果。To guarantee the personnel life safety and efficient operation of the internal combustion engine during high altitude tunnel construction,this paper put forward two integrated ventilation and oxygen supply modes,ventilation pipeline mode and special pipeline mode,relying on a tunnel project at an altitude of 3800 m,and calculated the environmental parameters of different altitudes and the tunnel face and the oxygen demand of two integrated ventilation and oxygen supply modes.Numerical simulation was used to analyze the oxygen supply effect of the two oxygen supply modes.The results show that:(1)the oxygen supply quantity of the ventilation pipeline mode and special pipeline mode of the relying project are 0.576 m^(3)/s and 0.385 m^(3)/s,respectively;(2)the flow field stabilization time of the ventilation pipeline mode is within 50-60 s,while that of the special pipeline mode is within 60〜160 s;(3)the oxygen supply effect of the ventilation pipeline mode is relatively good,and the oxygen content of each measuring point reaches the oxygen supply target.However,only when the oxygen supply pipeline is arranged above the ventilation supply pipeline and 30 m away from the tunnel face,can the better oxygen supply effect be obtained.

关 键 词：高海拔隧道 通风供氧一体化 设计方案 通风管路供氧 专用管路供氧 

分 类 号：U453.5[建筑科学—桥梁与隧道工程]