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US 10,370,967 B2Granted
Integrated jacking pipes
AssigneeMekorot Water Company, Ltd
InventorsBen Ami Sorek, Orel Markovich
Life of this patent
Estimating the term…
Abstract
An integrated jacking pipe comprising a concrete jacking envelope integrally-formed with and encircling a metal pipe, wherein said metal pipe comprises a spigot protruding from said concrete jacking envelope and a bell whose diameter is larger than a diameter of said spigot.
Claims26
An integrated jacking pipe comprising a concrete jacking envelope integrally-formed with and encircling a metal pipe,
- wherein said metal pipe comprises a spigot protruding from said concrete jacking envelope and a bell whose diameter is larger than a diameter of said spigot,
- wherein said spigot and a bell of an adjacent integrated jacking pipe define a circumferential clearance between said spigot and said bell of said adjacent integrated jacking pipe, to prevent contact between said metal pipe and a metal pipe of said adjacent integrated jacking pipe during a pipe jacking process, and
- wherein said concrete jacking envelope is configured to withstand loads applied during said pipe jacking process.
A method for pipe jacking, comprising:
- jack-pushing a drilling head into the ground;
- serially jack-pushing multiple integrated jacking pipes into the ground, wherein each of said multiple integrated jacking pipes comprises a concrete jacking envelope integrally-formed with and encircling a metal pipe, wherein said metal pipe comprises a spigot protruding from said concrete jacking envelope and a bell whose diameter is larger than a diameter of said spigot;
- and
- welding, in every adjacent pair of said metal pipes of said multiple integrated jacking pipes, the spigot of one metal pipe to the bell of the other metal pipe, to form a sealed conduit,
- wherein said spigot of said one metal pipe and said bell of said other metal pipe define a circumferential clearance therebetween to prevent contact between said one metal pipe and said other metal pipe during said jack-pushing,
- wherein said concrete jacking envelope is configured to withstand loads applied during said jack-pushing.
3 more elements
A tunnel comprising a series of integrated jacking pipes each comprising:
- a concrete jacking envelope integrally-formed with and encircling a metal pipe,
- wherein said metal pipe comprises a spigot protruding from said concrete jacking envelope and a bell whose diameter is larger than a diameter of said spigot,
- wherein every adjacent pair of said series of integrated jacking pipes comprises the spigot of one metal pipe welded to the bell of the other metal pipe,
- wherein said spigot of said one metal pipe and said bell of said other metal pipe define a circumferential clearance therebetween to prevent contact between said one metal pipe and said other metal pipe during a pipe jacking process,
- wherein said concrete jacking envelope is configured to withstand loads applied during said pipe jacking process, and
- wherein said metal pipes form together a sealed, pressure-resistant, elongated conduit.
3 more elements
Dependencies are inferred from the claim text.