| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a ground anchor installation device and installation method, capable of reducing the number of execution steps required for installation of a ground anchor. <P>SOLUTION: Rotation and striking force are imparted to a boring rod 12, also push-in force is imparted, natural ground is excavated to a fixed depth while being drilled by a drilling bit 16, and a wire rope 20 is successively pulled into a drilled hole simultaneously. After drilling to the natural ground is ended, the boring rod 12 is rotated inversely to the time of drilling and a bit adapter 14 is separated from the drilling bit 16. Then, while the boring rod 12 including the bit adapter 14 is pulled out from the inside of the hole while the drilling bit 16, a casing shoe 18, a wire connection sleeve 2202 and the wire rope 20 are left as they are in the drilled hole, grout is pressurized and injected into the hole through the boring rod 12 and the wire rope is fixed to the natural ground. <P>COPYRIGHT: (C)2012,JPO&INPIT |
