GROUND IMPROVEMENT TYPE ANCHOR METHOD AND BORING MACHINE USED IN COMMON FOR GROUND IMPROVEMENT

摘要

PROBLEM TO BE SOLVED: To carry out the execution of pre-boring for an anchor hole, ground improvement and an anchor body without changing any machine. ;SOLUTION: A boring machine 10 used for ground improvement in common is so constituted that a main body pipe 22 capable of connecting and holding a casing pipe 12 and a main body rod 24 capable of holding an inner rod 14 are provided to a single sliding body 18. The easing pipe 12 and inner rod 14 are monolithically rotated by synchronized rotation of rotationally driving devices 34 and 40 and, at the same time, the casing pipe and inner rod can be monolithically moved back and forth under the slide of the single sliding body 18. When an anchor hole is bored and when the ground is improved, a required specific item is always measured by a measuring instrument corresponding thereto and, at the same time, the measured result can be properly indicated and recorded by an excavation recording device.;COPYRIGHT: (C)2001,JPO