| 摘要 |
PROBLEM TO BE SOLVED: To provide a guiding device and a guiding method of a boring rod for efficiently and surely extracting-removing an existing buried pipe buried underground.SOLUTION: The present invention is a guiding device constituted of a guide device composed of a slide plate processed with a predetermined width along an outer wall shape of an existing buried object and an annular support ring fixed to an upper part of the slide plate by rotatably fitting to one place of a central part or uniformly to a plurality of places in an upper part of the slide plate so as to cover an outer peripheral part of the boring rod and a guide device support groove provided with a gradation by diametrically reducing so that the support ring of the guide device is fitted in the outer peripheral part of the boring rod.SELECTED DRAWING: Figure 1 |
