DRAINAGE PIPE CONSTRUCTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a drainage pipe construction method preventing a drainage pipe from being pulled out together with the drainage pipe and/or being twisted when the outer pipe of a double pipe is pulled out when the drainage pipe (drainage pipe) is constructed in a hole bored by making use of the double pipe to make drainage. SOLUTION: The drainage pipe construction method includes: a boring process boring the ground G by a boring pipe; a drainage pipe insertion process inserting the drainage pipe 4 in the boring pipe 2; and a boring pipe pulling out process pulling out while rotating the boring pipe 2, and in the boring pipe pulling out process, a line-like member 24 is connected to the front end section of the drainage pipe 4, the front end side of the line-like member 24 is fixed to pull out the boring pipe after tension is given to the line-like member 24. COPYRIGHT: (C)2007,JPO&INPIT