| 摘要 |
<p>PURPOSE:To pour a pipe protecting material under pressure into all the underground holes sufficiently and surely by forming a number of branched holes from a main hole and pouring the pipe protecting material under pressure into the branched holes in the state where the main hole is closed by a pouring device. CONSTITUTION:A number of branched holes 3 which communicate to a main hole 1 are formed in the penetration state to the vicinity of a buried pipe P. Accordingly, a flexible nozzle 5 connected with a high pressure water feeding device 4 is inserted into the soil from a top edge opened port 2C, and the nozzle 5 is buried into the soil, loosening the soil by the flowing water supplied from the nozzle 5, and water and soil are allowed to flow into a pipe body 2a by the action of a suction device 6, and then discharged, and the branched hole 3 is formed. Then, a pressurizing feeder 7 for a pipe protecting material is connected with the pipe body 2a, and a fluidic pipe protecting material 8 is poured under pressure into the main hole 1 and all the branched holes 3 form a guide pipe 2b, and the pipe protecting material 8 is introduced over a prescribed range into the soil in the vicinity of the buried pipe. Accordingly, the pipe protecting material can be introduced over a desired range into the soil in the vicinity of the buried pipe sufficiently and surely.</p> |
