EuroFlo at CrossRail

เกจวัดแรงดัน keeps Tunnel boring machine (TBM) cool by a steady water supply. The Cross Rail challenge is an east-west rail route that passes under the city of London using new twin-bore 21km tunnels.
เกจวัดแรงดันลมขนาดเล็ก and the tanks are situated on the floor; the water is pumped from there right down to the shaft and all along the tunnel up to the TBM. Once the water has handed through the TBM system the remaining water comes again by way of a filtration system to the tanks on the surface, out of the tunnel.
The water circuit provides 20 l/s to each TBM and eight l/s is used in the TBM for different works and 12 l/s returns to the tanks. The inlet stress 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 equipment consisting of one single tank (3200m3) and one industrial pump used per tunnel. On one other site, 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 while the TBM excavates by way of a major underground part of the Cross rail challenge.

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