Title:
UNDER-REAMING APPARATUS AND UNDER-REAMED PILE CONSTRUCTION METHOD USING SAME
Document Type and Number:
WIPO Patent Application WO/2023/132434
Kind Code:
A1
Abstract:
The present invention relates to: an under-reaming apparatus which can enlarge a diameter by hitting the side of a bottom portion of a borehole in the bored ground by using pneumatic or hydraulic fluid pressure, and particularly prevent the rotation of an under-reaming bit, thereby conducting more efficient under-reaming; and an under-reamed pile construction method using same.
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Inventors:
JEONG SOON YONG (KR)
Application Number:
PCT/KR2022/013719
Publication Date:
July 13, 2023
Filing Date:
September 14, 2022
Export Citation:
Assignee:
EASYGEOTECH CO LTD (KR)
International Classes:
E21B10/32; E02D5/22; E02D5/46; E21B4/14; E21B17/10
Foreign References:
| KR20090132231A | 2009-12-30 | |||
| KR20090132734A | 2009-12-31 | |||
| KR950006684U | 1995-03-21 | |||
| JPH0673730A | 1994-03-15 | |||
| KR20100046731A | 2010-05-07 |
Attorney, Agent or Firm:
LEE, Hyeongwoo (KR)
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