F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
F16L 1/036 (2006.01) E21B 7/20 (2006.01) E21B 7/26 (2006.01) E21B 7/30 (2006.01)
Patent
CA 2070417
2070417 9106798 PCTABS00005 A method for mounting pipelines (8) or outer walls of a tunnel in the ground where one after another joined polygon or round cylinders are forced to penetrate into the ground when the soil cut by the front edge of the first cylinder (2) moves into the said cylinders during tunnelling. The cylinders (2, 3, 4, 15) containing soil are replaced by the final pipe/piping (8) meant for the ground, by forcing and/or pulling said pipe/piping in the place of said cylinders and the soil excavated from the tunnel is removed from the tunnel inside the said cylinders when said cylinders are forced out of the tunnel.
Ilomaki Valto
Bereskin & Parr
Ilomaki Valto
LandOfFree
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