เครื่องวัดแรงดันเกจที่นิยมใช้ retains Tunnel boring machine (TBM) cool by a steady water supply. The Cross Rail project is an east-west rail route that passes under the 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 right down to the shaft and all along the tunnel as a lot as the TBM. Once the water has handed by way of the TBM system the remaining water comes back via a filtration system to the tanks on the floor, out of the tunnel.
The water circuit offers 20 l/s to every TBM and eight l/s is used within the TBM for various works and 12 l/s returns to the tanks. The inlet strain needed ranges between four and 10 bar. On one web site three TBM’s are working and the pump system delivers 60 l/s, with the tools consisting of 1 single tank (3200m3) and one industrial pump used per tunnel. On one other website, the set up support’s the excavation with only one TBM with 20 litres/second and the water storage tank capacity of 1100m3
EuroFlo use 37 kW vertical multistage Industrial pumps for the cooling system whereas the TBM excavates via a significant underground part of the Cross rail project.
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