| 摘要 |
PURPOSE:To inject a filling material by minimizing the ejection of muddy water and drilling an injection hole. CONSTITUTION:A pressure welded member 6 provided with an on/off valve 7 at the tip is connected to an expandable hydraulic cylinder 5. The hydraulic cylinder 5 and a hydraulic source 5 are set up on a truck 2. A drill unit 9 and a nozzle unit 13 are laid out in such a fashion that they may be exchanged respectively while the nozzle unit 13 is connected to a filler material manufacturing machine 10 by way of a pipeline. As an auxiliary filling device is mounted to the truck, this construction makes it possible to prepare for filling operation swiftly and easily as well and minimize the amount of muddy water ejected from an injection hole after drilled until the filler material is injected, thereby enhancing dramatically both workability and work efficiency. Furthermore, since the amount of muddy water ejected is minimized, there is no need to dispose of the muddy water and thereby minimizing contamination on site. |
