# US 10,370,967 B2 · Integrated jacking pipes > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,370,967 B2 - Document ID: US10370967B2 - Status: Granted - Kind: B2 - Application number: 15/509,635 - Filed: 2015-09-07 - Published: 2017-10-19 - Granted: 2019-08-06 - Earliest claimed: 2014-09-10 - Assignees: Mekorot Water Company, Ltd - Applicants: Mekorot Water Company, Ltd. - Inventors: Ben Ami Sorek; Orel Markovich - Web page: https://patentgrep.com/patent/US10370967B2 ## CPC - E21D 9/005: {by forcing prefabricated elements through the ground, e.g. by pushing lining from an access pit (driving shields E21D9/06)} - E21B 7/20: Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes - F16L 1/036: the pipes being composed of sections of short length (F16L1/038 takes precedence) - F16L 9/153: comprising only layers of metal and concrete with or without reinforcement - F16L 13/02: Welded joints - F16L 25/0027: {Joints for pipes made of reinforced concrete} - E21D: SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS (soil-conditioning or soil-stabilising materials C09K17/00; drilling or cutting machines for mining or quarrying E21C; safety devices, transport, rescue, ventilation or drainage E21F) - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS - F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL ## 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. ## Claims ### Claim 1 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. ### Claim 2 (depends on 1) The integrated jacking pipe according to claim 1, wherein the diameter of said bell is larger than the diameter of said spigot by more than twice a wall thickness of said metal pipe. ### Claim 3 (depends on 1) The integrated jacking pipe according to claim 1, wherein said concrete jacking envelope is made of reinforced concrete. ### Claim 4 (depends on 1) The integrated jacking pipe according to claim 1, wherein said metal pipe is made of steel. ### Claim 5 (depends on 1) The integrated jacking pipe according to claim 1, wherein said concrete jacking envelope comprises a first end portion with a circumferential seal and a second end portion with a circumferential metal collar. ### Claim 6 (depends on 1) The integrated jacking pipe according to claim 1, further comprising a lubrication nozzle formed in both of said concrete jacking envelope and said metal pipe. ### Claim 7 (depends on 1) The integrated jacking pipe according to claim 1, further comprising a load distributor disposed on a side rim of said concrete jacking envelope. ### Claim 8 (depends on 7) The integrated jacking pipe according to claim 7, wherein said load distributor comprises a plywood pad. ### Claim 9 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. ### Claim 10 (depends on 9) The method according to claim 9, further comprising jack-pushing an intermediate jacking station between two adjacent ones of said multiple integrated jacking pipes, and operating said intermediate jacking station to repeatedly contract and expand. ### Claim 11 (depends on 9) The method according to claim 9, wherein said welding is a direct welding between said metal pipes. ### Claim 12 (depends on 9) The method according to claim 9, wherein the diameter of said bell is larger than the diameter of said spigot by more than twice a wall thickness of said metal pipe. ### Claim 13 (depends on 9) The method according to claim 9, wherein said concrete jacking envelope is made of reinforced concrete. ### Claim 14 (depends on 9) The method according to claim 9, wherein said metal pipe is made of steel. ### Claim 15 (depends on 9) The method according to claim 9, wherein said concrete jacking envelope comprises a first end portion with a circumferential seal and a second end portion with a circumferential metal collar. ### Claim 16 (depends on 9) The method according to claim 9, wherein at least some of said multiple integrated jacking pipes further comprises a lubrication nozzle formed in both of said concrete jacking envelope and said metal pipe. ### Claim 17 (depends on 9) The method according to claim 9, wherein at least some of said multiple integrated jacking pipes further comprises a load distributor disposed on a side rim of said concrete jacking envelope. ### Claim 18 (depends on 17) The method according to claim 17, wherein said load distributor comprises a plywood pad. ### Claim 19 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. ### Claim 20 (depends on 19) The tunnel according to claim 19, wherein the diameter of said bell is larger than the diameter of said spigot by more than twice a wall thickness of said metal pipe. ### Claim 21 (depends on 19) The tunnel according to claim 19, wherein said concrete jacking envelope is made of reinforced concrete. ### Claim 22 (depends on 19) The tunnel according to claim 19, wherein said metal pipe is made of steel. ### Claim 23 (depends on 19) The tunnel according to claim 19, wherein said concrete jacking envelope comprises a first end portion with a circumferential seal and a second end portion with a circumferential metal collar. ### Claim 24 (depends on 19) The tunnel according to claim 19, wherein at least some integrated jacking pipes of said series of integrated jacking pipes further comprises a lubrication nozzle formed in both of said concrete jacking envelope and said metal pipe. ### Claim 25 (depends on 19) The tunnel according to claim 19, wherein at least some integrated jacking pipes of said series of integrated jacking pipes further comprises a load distributor disposed on a side rim of said concrete jacking envelope. ### Claim 26 (depends on 25) The tunnel according to claim 25, wherein said load distributor comprises a plywood pad.