通渝隧道出口段施工通风技术

Ventilation Technique in Construction of Exit Section of Tongyu Tunnel

通渝隧道地质条件复杂,隧道埋深大,涌水频繁,过C1、C2煤层,并有有害气体H2S等,严重威胁施工安全。在隧道施工过程中,针对隧道运距长、无轨运输、有瓦斯及其他有害气体等特点,采用工程类比和计算相结合的方法,精心设计隧道施工通风方案,为隧道安全顺利施工提供保障。

Due to the complicated geological conditions of Tongyu Tunnel including large burying depth, frequent water burst over C1 and C2 coal layers and noxious gas H2 S, etc., the safety of construction is seriously threatened. Aiming at features such as long transport distance of tunnel, trackless transportation, mash gas and other noxious gases, etc. during the construction of tunnel, this paper elaborately designs ventilation scheme in construction of tunnel by means of the method combining project comparison and calculation so as to provide the guarantee for safe and smooth construction of tunnel.