| 摘要 |
PURPOSE: An injection pipe device and a terminal device used therefor are provided to enable the rapid and effective injection of a grout material by increasing the injection range of the grout material. CONSTITUTION: An injection pipe device comprises an injection pipe(10) and a selective discharge device. A grout material flows in the injection pipe, and the injection pipe injects the grout material into a borehole. The selective discharge device is formed on the bottom end of the injection pipe and is ascended and descended depending on the pressure of the grout material to selectively discharge the grout material to the outside. |
