随着隧道施工机械化程度的提高，在特长小断面隧道工程中采用钻爆法掘进施工，其机械配套是制约掘进速度的重要条件。
With the development of mechanization and drill and blast in extra - long tunnels with a small section, the matching machinery is very important to driving speed.
京九铁路雷公山隧道机械化施工中应用施工通风降尘净化综合治理技术获得成功。
Comprehensive treatment technology of ventilation, dust -alleviation and purification was successfully applied in the mechanized construction of Lei Gongshan tunnel on Beijing-Jiulong Railway Line.
京九铁路雷公山隧道机械化施工中应用施工通风降尘净化综合治理技术获得成功。
Comprehensive treatment technology of ventilation, dust -alleviation and purification was successfully applied in the mechanized construction of Lei Gongshan tunnel on Beijing-Jiulong Railway Line.
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