Title:
WATER CUT-OFF METHOD OF ANCHOR HOLE MOUTH
Document Type and Number:
Japanese Patent JP2023161184
Kind Code:
A
Abstract:
To provide the water cut-off method of an anchor hole mouth more simply and stably, in place of the conventional water cut-off method of using a water cut-off material.SOLUTION: In a ground anchor construction method, an anchor hole 18 is drilled in ground 34 by sequentially inserting multiple casings 10 into a water cut-off box 12 jointed to the outer surface of a soil wall 22, cement milk 42 is filled into the anchor hole 18 and a tendon 40 is inserted, then, the casings 10 are pulled out sequentially from a rear side. The water cut-off method of the mouth of an anchor hole 18 comprises a step in which, when a tip end 10a of the last casing 10 reaches inside the water cut-off box 12, a predetermined amount of water 48 is injected from the rear opening 38a of a casing packer 38 filled in the casing 10, and the cement milk 42 filled in the casings 10 and the water cut-off box 12 is pressed to the anchor hole 18 side, and a step in which, after solidification of the cement milk 42 in the anchor hole 18, the water cut-off box 12 and the casings 10 are removed and the inside water 48 is discarded.SELECTED DRAWING: Figure 3
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Inventors:
IWAIDA YOSHIO
FUKUI TEPPEI
FUKUI TEPPEI
Application Number:
JP2022071377A
Publication Date:
November 07, 2023
Filing Date:
April 25, 2022
Export Citation:
Assignee:
CHEMICAL GROUT CO
International Classes:
E02D5/80
Attorney, Agent or Firm:
Hiroyuki Okuda
Noriyuki Okuda
Noriyuki Okuda