Roadheader CTR300A

Roadheaders offer a unique capability and flexibility for the excavation of soft to medium strength rock formations, therefore, are widely used in underground mining and tunnelling operations. CREG's series of roadheaders offers the best cutting performance in a wide range of rock formations. Equipped with geometrically optimized transverse cutter heads, these flexible machines can be used for a wide range of applications such as rehabilitation of existing tunnels and excavation of underground caverns. Shijiangshan Maglev Train Tunnel, Beijing, China Shijiangshang Maglev Train Tunnel is part of the first maglev train line S1 in Beijing. 8 stations are set up on this 10.2km S1 line and the whole trip takes 20 minutes. Minimum turning radius of the maglev train is 75m. To greatly reduce the disturbance above ground in the dense residential area, CREG roadheader was used for excavation. Data: Applied Model: CTR323 Tunnel section: 12.86m wide * 9.66m high Tunnel length: 162m Construction method: Roadheader Excavated material: Hard rock Rock hardness: 37.6 Mpa-106.8 Mpas Application: Zengjiayan Multifunction Tunnel, Chongqing, China Zengjiayan Mutifunction Tunnel is the key structure of the landmark across-district road and railway project in mountainous city Chongqing, China. The whole project spans 5.63km and mainly includes 5.54km tunnels and one 0,55km multifunction bridge over Jialing River. Data: Tunnel section: 12m wide * 9m high Tunnel length: 5.54km Construction method: Roadheader + Drill and Blast Excavated material: Moderately weathered sandstone and mudstone Rock hardness: 65 Mpa-85 Mpas