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WO2002035062A1 - Procede de perforation au rocher - Google Patents

Procede de perforation au rocher Download PDF

Info

Publication number
WO2002035062A1
WO2002035062A1 PCT/SE2001/002271 SE0102271W WO0235062A1 WO 2002035062 A1 WO2002035062 A1 WO 2002035062A1 SE 0102271 W SE0102271 W SE 0102271W WO 0235062 A1 WO0235062 A1 WO 0235062A1
Authority
WO
WIPO (PCT)
Prior art keywords
rock drilling
drill string
drill
drilling machine
ground
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/SE2001/002271
Other languages
English (en)
Inventor
Åke EKLÖF
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Epiroc Rock Drills AB
Original Assignee
Atlas Copco Rock Drills AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Atlas Copco Rock Drills AB filed Critical Atlas Copco Rock Drills AB
Priority to AU2001296155A priority Critical patent/AU2001296155A1/en
Publication of WO2002035062A1 publication Critical patent/WO2002035062A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B1/00—Percussion drilling
    • E21B1/02—Surface drives for drop hammers or percussion drilling, e.g. with a cable
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
    • E21B44/02—Automatic control of the tool feed

Definitions

  • the present invention relates to a method of rock drilling with a percussive rock drilling machine to which a drill string comprising parts screwed together is connected.
  • the present invention aims at achieving a method where the loads on the drilling equipment is reduced at the same time as the productivity of the drilling process is increased. This is achieved by reducing the feed force on the drill string at a predetermined distance from the intended bottom of the drill hole at the same time as the percussive power is substantially maintained until the drill hole has been completed. Through this it is achieved that the screw joints can easily be loosened directly after the drill hole has been completed. In certain particularly difficult situations the invention can advantageously be used in connection with completion of drilling with each individual drill rod to loosen the joint between the shank adapter and the drill string in order to easily add a drill rod to the drill string.
  • the device shown in the drawing comprises a feed beam 1 which is intended to be carried by a not shown drill rig in the usual way.
  • a rock drilling machine 2 is arranged on a slide 21 which is movable along tthe feed beam 1 in the usual way.
  • a drill string 18 comprising a shank adapter 31, one or more drill rods 32, 33 and a drill bit 19 is connected to the rock drilling machine 2.
  • the shank adapter, the drill rods and the drill bit form parts of the drill string.
  • Displacement of the rock drilling machine occurs with the aid of a pressure medium cylinder 3 and a feed line 7.
  • the pressure medium cylinder 3 has a first end 4 which is fixedly connected to the feed beam 1 and a second end 5 which is movable relative to the feed beam.
  • it is the piston rod 12 of the pressure medium cylinder 3 which is fixedly connected to the feed beam.
  • the movable end 5 of the pressure medium cylinder 3 carries a sheave 6.
  • the feed line 7 which is passed over the sheave 6 is with one end fixed on the feed beam 1 and with the other end connected with the slide 21 of the rock drilling machine 2. With this arrangement the rock drilling machine 2 is driven along the feed beam 1 with twice the speed of the movable end 5 of the pressure medium cylinder 3.
  • the rock drilling device is provided with a hose reel marked by means of a suppor 13, and a drill support at the middle of the drill string 18, marked by means of a support 14. This means that the hose reel and the drill support are driven along the feed beam 1 with the same speed as the movable end 5 of the pressure medium cylinder 3 in the usual way.
  • Supports 13,14 are provided with points 9,10 between which a further line 8 is arranged. This further line is passed, one or several turns, about a wheel 17 on a measuring device 11 which is fixedly arranged on the feed beam 1. The measuring device 11 produces pulses corresponding to the displacement of the rock drilling machine 2 along the fed beam 1.
  • the measuring cables are connected to a socket 22 on the measuring device 11 the measuring cables are fixedly arranged relative to the feed beam 1 and are thus not exerted to the loads of vibrating pressure medium hoses.
  • the position of the rock drilling machine 2 along the feed beam 1 is measured by counting of the pulses from the measuring device 1 1 in the control unit 35 the inlet 41 of which is connected with the socket 22.
  • the control unit 35 is arranged to keep track of where the drill bit 19 is also when extending or shortening the drill string 18.
  • the pressure medium cylinder 3 is provided with connections 42,43 for pressure medium. As indicated by conductors 44,45 the pressure medium supply to connections 42,43 is controlled by the control unit 35.
  • control unit 35 also controls the hammer device of the rock drillin machine 2 and rotation of the drill string 18.
  • drilling one should drill to a predetermined hole bottom 36. This is done by driving the rock drilling machine 2 toward the ground 34 and by rotation of the drill string 18 and exerting it to imacts in direction toward the ground.
  • drilling one uses one or more drill rods 32,33 connected to the shank adapter 31.
  • the position of the drill bit 19 is measured and stored in the control unit 35.
  • the value stored in the control unit is used to calculate the remaining distance to the hole bottom 36.
  • the feed force on the drill bit is reduced by restricting the supply of pressure medium to connection 42. During the final phase of the drilling the impact force against the drill string 18 is maintained substantially unchanged.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)

Abstract

La présente invention concerne un procédé de perforation au rocher à l'aide d'une perforatrice à percussion (2) à laquelle est relié un train de tiges de forage (18) comprenant des parties (31, 32, 33, 19) vissées les unes aux autres. Afin d'obtenir un desserrage efficace des joints à vis et un temps de forage réduit, la force d'avance est réduite à une distance prédéterminée (37) d'un fond de trou (36) prédéterminé en même temps que le train de tiges de forage (18) est soumis aux impacts avec une force sensiblement inchangée jusqu'à ce que le forage soit terminé.
PCT/SE2001/002271 2000-10-26 2001-10-18 Procede de perforation au rocher Ceased WO2002035062A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001296155A AU2001296155A1 (en) 2000-10-26 2001-10-18 Method of rock drilling

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0003881A SE0003881L (sv) 2000-10-26 2000-10-26 Förfarande för bergborrning
SE0003881-0 2000-10-26

Publications (1)

Publication Number Publication Date
WO2002035062A1 true WO2002035062A1 (fr) 2002-05-02

Family

ID=20281565

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2001/002271 Ceased WO2002035062A1 (fr) 2000-10-26 2001-10-18 Procede de perforation au rocher

Country Status (3)

Country Link
AU (1) AU2001296155A1 (fr)
SE (1) SE0003881L (fr)
WO (1) WO2002035062A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113646506A (zh) * 2019-03-29 2021-11-12 安百拓凿岩有限公司 控制冲击钻机的钻凿过程的方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4503918A (en) * 1982-06-22 1985-03-12 Institut Cerac S.A. Rock drilling apparatus
US4995465A (en) * 1989-11-27 1991-02-26 Conoco Inc. Rotary drillstring guidance by feedrate oscillation
US5129464A (en) * 1990-06-26 1992-07-14 Secoma S.A. System for controlling a rock drill
EP0825330A1 (fr) * 1996-08-21 1998-02-25 Furukawa Co., Ltd. Dispositif de commande de forage pour trépan de roche

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4503918A (en) * 1982-06-22 1985-03-12 Institut Cerac S.A. Rock drilling apparatus
US4995465A (en) * 1989-11-27 1991-02-26 Conoco Inc. Rotary drillstring guidance by feedrate oscillation
US5129464A (en) * 1990-06-26 1992-07-14 Secoma S.A. System for controlling a rock drill
EP0825330A1 (fr) * 1996-08-21 1998-02-25 Furukawa Co., Ltd. Dispositif de commande de forage pour trépan de roche

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113646506A (zh) * 2019-03-29 2021-11-12 安百拓凿岩有限公司 控制冲击钻机的钻凿过程的方法
CN113646506B (zh) * 2019-03-29 2024-03-19 安百拓凿岩有限公司 控制冲击钻机的钻凿过程的方法
US12049813B2 (en) 2019-03-29 2024-07-30 Epiroc Rock Drills Aktiebolag Method of controlling a drilling process of a percussion drilling machine

Also Published As

Publication number Publication date
SE0003881D0 (sv) 2000-10-26
SE516968C2 (sv) 2002-03-26
SE0003881L (sv) 2002-03-26
AU2001296155A1 (en) 2002-05-06

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Legal Events

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DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
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