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1. WO1996006264 - METHOD AND APPARATUS FOR STEERING A DRILL HEAD

Publication Number WO/1996/006264
Publication Date 29.02.1996
International Application No. PCT/FI1994/000360
International Filing Date 19.08.1994
Chapter 2 Demand Filed 19.03.1996
IPC
E21D 9/00 2006.01
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
9Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
G01B 11/27 2006.01
GPHYSICS
01MEASURING; TESTING
BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
11Measuring arrangements characterised by the use of optical means
26for measuring angles or tapers; for testing the alignment of axes
27for testing the alignment of axes
G01C 15/00 2006.01
GPHYSICS
01MEASURING; TESTING
CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
15Surveying instruments or accessories not provided for in groups G01C1/-G01C13/116
CPC
E21D 9/004
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
9Tunnels or galleries, with or without linings; Methods or apparatus for making thereof
003Arrangement of measuring or indicating devices for use during driving of tunnels, e.g. for guiding machines
004using light beams for direction or position control
G01B 11/27
GPHYSICS
01MEASURING; TESTING
BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
11Measuring arrangements characterised by the use of optical means
26for measuring angles or tapers; for testing the alignment of axes
27for testing the alignment of axes
G01C 15/002
GPHYSICS
01MEASURING; TESTING
CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
15Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
002Active optical surveying means
Applicants
  • ILOMÄKI, Valto [FI/FI]; FI
Inventors
  • ILOMÄKI, Valto; FI
Agents
  • NIEMINEN, Taisto; Patenttitoimisto T Nieminen Oy Kehräsaari B FIN-33200 Tampere, FI
Priority Data
Publication Language English (EN)
Filing Language Finnish (FI)
Designated States
Title
(EN) METHOD AND APPARATUS FOR STEERING A DRILL HEAD
(FR) PROCEDE ET APPAREIL D'ORIENTATION D'UNE TETE DE FORET
Abstract
(EN)
A method to steer and to adjust the direction of the drill head (12) of an apparatus drilling a tunnel or a hole, in which method a laser beam or similar projected from the tunnel starting point to the drill head is used to detect the position of the drill head and for drilling an equipment is used having a free opening from the said starting point to the drill head. The laser beam is received in the drill head with a rotating target (13) the rotating position of which is detected at least in one angular position of rotation by means of an angle sensor (25) and that information on deviation received at the said angular position from target (13) by means of measuring unit (14) is transmitted to drill head (12) steering devices (19, 20) to change the position of drill head supporting means (22, 24) with regard to outer tube (23).
(FR)
L'invention concerne un procédé d'orientation et d'ajustement de l'orientation d'une tête de foret (12) d'un appareil de forage de tunnels ou de trous. Ce procédé consiste à utiliser un faisceau laser ou similaire projeté sur la tête de foret depuis le point de départ du tunnel pour détecter la position de la tête du foret, un équipement à ouverture libre étant utilisé pour le forage entre le point de départ et la tête de foret. Le faisceau laser arrive dans la tête de foret à cible rotative (13) dont la position de rotation est détectée au moins dans une position angulaire de rotation au moyen d'un détecteur de position angulaire (25), et les informations relatives à la déviation reçues au niveau de ladite position angulaire provenant de la cible (13) et détectées par un organe de mesure (14) sont transmises aux dispositifs d'orientation (19, 20) de la tête de foret de sorte que la position des moyens de support de la tête (22, 24) soit modifiée par rapport au tube externe (23).
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