大峡谷隧道进口段施工通风方案设计

Design of Ventilation Scheme for Construction of the Entrance Section of the Grand Canyon Tunnel

目前针对隧道施工通风已开展了较多研究,但是对于长距离公路而言,其施工规划受隧址区地质情况、工期等因素影响,因此其施工规划不尽相同。本文以大峡谷隧道为例,通过对不同区段地质情况的研讨和分析,综合考虑了现有通风设备以及现场施工情况,进行通风方式选择、施工工区划分,再进行风量计算、风阻计算、通风设备选型,形成一套完整的长大公路隧道通风设计方案。

At present,many researches have been carried out on tunnel construction ventilation,but for long-distance highways,the construction planning is affected by the geological conditions of the tunnel site,construction period and other factors,so the construction planning is not the same.This article takes the Grand Canyon Tunnel as an example.Through the study and analysis of the geological conditions of different sections,the existing ventilation equipment and site construction conditions are comprehensively considered,ventilation method selection,construction work area division,and air volume calculation,wind resistance calculation,and ventilation are carried out.Equipment selection,forming a complete set of ventilation design schemes for long and large highway tunnels.