เกจวัดน้ำยาแอร์refco retains Tunnel boring machine (TBM) cool by a continuous water supply. The Cross Rail project is an east-west rail route that passes under town of London utilizing new twin-bore 21km tunnels.
EuroFlo pumps and the tanks are positioned on the floor; the water is pumped from there down to the shaft and all along the tunnel up to the TBM. Once the water has passed by way of the TBM system the remaining water comes back via a filtration system to the tanks on the surface, out of the tunnel.
The water circuit provides 20 l/s to every TBM and 8 l/s is used within the TBM for different works and 12 l/s returns to the tanks. The inlet stress needed ranges between 4 and 10 bar. On one website three TBM’s are operating and the pump system delivers 60 l/s, with the tools consisting of one single tank (3200m3) and one industrial pump used per tunnel. On one other website, the installation support’s the excavation with just one TBM with 20 litres/second and the water storage tank capability of 1100m3
EuroFlo use 37 kW vertical multistage Industrial pumps for the cooling system while the TBM excavates via a serious underground part of the Cross rail venture.