Underground pipe replacement technique

Details Underground pipe replacement technique Underground pipe replacement technique

1996-01-08

1998-10-06

Taylor, Dennis L.

Hydraulic and earth engineering

Subterranean or submarine pipe or cable laying, retrieving,...

Repair, replacement, or improvement

138 98, 405154, 405156, F16L 100

Patent

active

058167455

ABSTRACT:
The apparatus and technique of the invention constitutes a hydraulic jack system for pushing sections of new pipe which, in turn, pushes a sleeve-cone expander arrangement to break up the old pipe and define a straight path for the new pipe. Apparatus is employed to determine the skin friction and the penetration friction, and to dispense a lubricant to reduce such frictional forces.

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