| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a device for installing a pipe in the underground, capable of smoothly propelling a pipe in the underground, even in the underground containing gravel. <P>SOLUTION: A pipe installation device comprising a pipe (head pipe 6), a base plate 25 which is disposed movable in the pipe in watertight contact with the inner peripheral surface of the pipe in the direction along the central axis of the pipe, an excavator 26 which is disposed in front of the base plate, a water supply mechanism 75 which supplies water into an excavated sediment intake space surrounded by the front face of the base plate and the inner peripheral surface of the pipe, and a sludge discharge mechanism 76 which discharges the excavated sediment taken in the excavated sediment intake space to outside of the excavated sediment intake space, further comprises a gravel intake box 99 which is capable of taking gravel entering inside of the pipe ahead of the base plate 25 through the underground excavation by the excavator into a space at the rear side of the front face 39f of the base plate through a gravel intake through-hole 91 formed in the base plate 25 so as to accommodate the taken gravel without leakage to the inside of the pipe at the rear of the base plate 25. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
