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1. WO2012067454 - BOREHOLE-DIAMETER-EXPANDING DRILL HAVING THE FUNCTION OF MAINTAINING THE SHAPE OF THE REAMED AREA IN THE GROUND, AND A PILE AND TENSION MEMBER CONSTRUCTION METHOD FOR BUILDING WORK USING THE SAME

Publication Number WO/2012/067454
Publication Date 24.05.2012
International Application No. PCT/KR2011/008814
International Filing Date 17.11.2011
IPC
E21B 7/28 2006.01
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
7Special methods or apparatus for drilling
28Enlarging drilled holes, e.g. by counterboring
E02D 5/34 2006.01
EFIXED CONSTRUCTIONS
02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
5Bulkheads, piles, or other structural elements specially adapted to foundation engineering
22Piles
34Concrete or concrete-like piles cast in position
CPC
E21B 10/32
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
10Drill bits
26Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
32with expansible cutting tools
Applicants
  • 주식회사 삼일이엔씨 SAMIL ENGINEERING & CONSTRUCTION CO., LTD [KR]/[KR] (AllExceptUS)
  • 임성대 YIM, Seong Dae [KR]/[KR] (UsOnly)
  • 현재호 HYUN, Jae Ho [KR]/[KR] (UsOnly)
  • 조형권 CHO, Hyeong Gwon [KR]/[KR] (UsOnly)
Inventors
  • 임성대 YIM, Seong Dae
  • 현재호 HYUN, Jae Ho
  • 조형권 CHO, Hyeong Gwon
Agents
  • 백홍기 BAEK, Hong-Ki
Priority Data
10-2010-011502618.11.2010KR
Publication Language Korean (KO)
Filing Language Korean (KO)
Designated States
Title
(EN) BOREHOLE-DIAMETER-EXPANDING DRILL HAVING THE FUNCTION OF MAINTAINING THE SHAPE OF THE REAMED AREA IN THE GROUND, AND A PILE AND TENSION MEMBER CONSTRUCTION METHOD FOR BUILDING WORK USING THE SAME
(FR) TRÉPAN D'ÉLARGISSEMENT DE DIAMÈTRE DE TROU DE FORAGE AYANT LA FONCTION DE MAINTENIR LA FORME DE LA ZONE ALÉSÉE DANS LE SOL, ET PROCÉDÉ DE CONSTRUCTION D'ORGANE DE TENSION ET DE PIEU POUR TÂCHE DE CONSTRUCTION UTILISANT CELUI-CI
(KO) 지중 확공부의 형상유지 기능을 갖는 천공경 확장드릴 및 그를 이용한 건설공사용 말뚝 및 인장부재 시공방법
Abstract
(EN)
The present invention relates to a borehole-diameter-expanding drill which is used in order to expand the hole wall in part of a borehole shaft drilled in the ground for the purpose of building work, wherein there is a sliding blade assembly which comprises sliding blades capable of mutual folding, hinged to the shaft part of a rotor at the upper end thereof, and each of the sliding blades has secured to the upper surface thereof cutting bits for hole-wall cutting, and there is a movable member for controlling the upwards unfolding and the downwards folding of the sliding blades, and thus it is possible to subject part of the borehole shaft to reaming in the ground while maintaining the shape of the reamed area in the ground unaltered, and it is possible to form the securing and fixing part of an anchor or tension pile or else to form the spread foundation part at the front end of a compression pile by casting concrete into the reamed area.
(FR)
La présente invention se rapporte à un trépan d'élargissement de diamètre de trou de forage qui est utilisé afin d'élargir la paroi de trou dans une partie d'un puits de forage percé dans le sol en vue d'une tâche de construction. Il y a un ensemble de pales coulissantes qui comprend des pales coulissantes aptes à un pliage mutuel, s'articulant sur la partie arbre d'un rotor au niveau de son extrémité supérieure, et chacune des pales coulissantes comporte, fixés à sa surface supérieure, des forets de découpe pour découpe de paroi de trou, et il y a un élément mobile servant à commander le dépliage vers le haut et le pliage vers le bas des pales coulissantes, et il est ainsi possible de soumettre une partie du puits de forage à un alésage dans le sol tout en ne modifiant pas la forme de la zone alésée dans le sol, et il est possible de former la partie d'immobilisation et de fixation d'un dispositif d'ancrage ou d'un pieu de tension ou de former la partie fondation étalée au niveau de l'extrémité avant d'un pieu de compression par coulée de béton dans la zone alésée.
(KO)
본 발명은, 건설 공사를 위해 지반에 뚫린 천공홀의 일부에 공벽 확장하기 위해 사용하는 천공경 확장드릴에 있어서, 회전체의 축부에 상단이 힌지연결되며 상호 접철 가능한 접동날개들로 된 접동날개 어셈블리를 구비하고, 상기 접동날개들 각각에는 상면에 공벽절삭용 절삭비트들이 고정되며, 접동날개의 펼쳐올림과 접어내림을 제어하는 가동부재도 구비함으로써 천공홀의 일부에 지중 확공을 수행함과 동시에 지중 확공부의 형상을 그대로 유지할 수 있도록 해주어, 그 확공부에 콘크리트를 타설하여 압축말뚝 선단의 확대 기초부를 형성하거나 앵커나 인장말뚝의 고정 정착부를 형성할 수 있게 한다.
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