Japan, Feb. 27 -- CHEMICAL GROUTING CO LTD has got intellectual property rights for 'WATER CUT-OFF METHOD OF ANCHOR HOLE MOUTH.' Other related details are as follows:
Application Number: JP,2022-071377
Category (FI): E02D5/80@Z
Stage: PROBLEM TO BE SOLVED: 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 (Grant)
Filing Date: April 25, 2022
Publication Date: Nov. 7, 2023
The original document can be viewed at: https://www.j-platpat.inpit.go.jp/p0100
Disclaimer: Curated by HT Syndication.
