THE THRUST PIPE FOR PIPE-JACKING METHOD, THE CONNECTION PIPE FOR PIPE-JACKING METHOD, THE PIPE-JACKING METHOD, AND MANUFACTURING METHOD OF THRUST PIPE

摘要

PROBLEM TO BE SOLVED: To provide the thrust pipe for pipe-jacking method, the connection pipe for pipe-jacking method, pipe-jacking method which utilizes said pipes, and the manufacturing method of the thrust pipe for pipe-jacking method, by arranging a plurality of thrust pipes for pipe-jacking method in series which outputs a lubricant within a range in which the lubricant is effective.;SOLUTION: A pipe line 2 in which a first pipe line 21 having a discharge hole in the direction opposite to the thrust direction at the top of the outer diameter a little smaller than the outer diameter of the thrust pipe, a second semicircular pipe line 22 having a discharge hole at its middle height in the same direction with the first discharge hole, a third pipe line 23 having a discharge hole at its lower symmetrical position in the same direction with the first discharge hole, are connectedly installed axially, is laid. An injection box 41 injecting a lubricant 7 is installed and one end of a lubricant feed pipe 43 is connected to the injection box 41, the other end is arranged to communicate with a connection hole 15 provided at the end of the thrust pipe 1.;COPYRIGHT: (C)2002,JPO