前言隧道掘进时,由于凿岩、爆破、装岩、喷射混凝土、全断面切割巷道以及内燃机车行驶等产生粉尘及炭粒,使空气污染,既影响人体健康,又妨碍工程进展。对此,一般采用风筒通风进行解决。但是,爆破时飞石经常使风筒受损,风筒接头不严又往往会发生漏风。因此巷道愈延长,通风效果也愈降 Foreword In tunnel boring, dust and carbon particles are generated from the drilling, blasting, rock filling, shotcrete, full-face cutting roadway and driving of diesel locomotives to cause air pollution, which not only affects human health but also hinders the progress of the project. In this regard, the general use of ventilation duct to solve. However, when the blasting flyers often damage the hairdryer, duct connectors are not strict and often occur air leakage. Therefore, the longer the roadway, ventilation is also more effective