隧道施工,尤其特长大隧道施工,搞好通风防尘是改善洞内施工环境,提高工作效率的一个重要措施,是采用无轨运输方式,更要全力搞好。通风防尘主要解决两方面问题,一是有毒气体,主要来源于爆破炮烟和内燃机械废气;二是粉尘,主要来源于洞内开挖爆破和机械作业扬起的灰尘等。 Tunnel construction, especially in the construction of large tunnel, ventilation and dust prevention is to improve the construction environment within the cave and improve work efficiency is an important measure is to use the trackless mode of transport, but also to do a good job. Ventilation dust mainly solve two problems, first, toxic gases, mainly from the demolition of artillery and internal combustion machinery exhaust; the second is dust, mainly from the excavation blasting holes and dust raised by mechanical operations.