| 摘要 |
PURPOSE: A method for laying a pipe for an underground line is provided to tow easily a pipe for an underground line by forming a plurality of inflow holes on a peripheral side of a front part in the pipe for the underground. CONSTITUTION: A tunnel(30) is excavated in a curved structure. A pipe(50) for underground line is connected to a tow rod(60) and a pipe guide part(61). A tow line connected to the tow rod and the pipe guide part is pulled and the pipe for the underground line passes through the tunnel. A plurality of sludge inlets(51) are formed in a constant interval on a peripheral surface of a front end part. The tow line is connected to a connective diaphragm. |
