A Clear Solution for Mixed Ground Rail Tunnels in China
- Two Robbins EPBs with mixed face cutterheads broke ground in 2011
- Kunming, with a population of over three million people, has no rail transportation
Kunming Metro Line 1
Location
Kunming, China
Scope of Supply
2 x 6.4 m (20.6 ft) EPB TBMs
Tunnel Length
2 x 1.5 km (0.9 mi)
Ground Condition
Mixed Ground including Clay, Silt, Breccias, and Limestone with Karst Formations