Anchor bolt construction method, anchor bolt buried hole drilling method, and drilling equipment

摘要

This invention, existing arrangement of bar existing, designates that the anchor volt/bolt which had sufficient strength without causing the decrease of strength is operated as purpose. And, with this invention, after digging the 1st burying hole in order to bury anchor volt/bolt on the operation aspect in the anchor volt/bolt operation method of burying anchor volt/bolt on the operation aspect, being crooked the 2nd burying hole to the point of this 1st burying hole from the point of the 1st burying hole, it dug, after that, it had decided to bury the anchor volt/bolt which these are crooked to the 1st and 2nd burying hole in the halfway section.