SE516968C2 - Procedure for rock drilling - Google Patents

Procedure for rock drilling

Info

Publication number
SE516968C2
SE516968C2 SE0003881A SE0003881A SE516968C2 SE 516968 C2 SE516968 C2 SE 516968C2 SE 0003881 A SE0003881 A SE 0003881A SE 0003881 A SE0003881 A SE 0003881A SE 516968 C2 SE516968 C2 SE 516968C2
Authority
SE
Sweden
Prior art keywords
rock drilling
drilling machine
drill string
drill
control unit
Prior art date
Application number
SE0003881A
Other languages
Swedish (sv)
Other versions
SE0003881L (en
SE0003881D0 (en
Inventor
Aake Ekloef
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 SE0003881A priority Critical patent/SE0003881L/en
Publication of SE0003881D0 publication Critical patent/SE0003881D0/en
Priority to PCT/SE2001/002271 priority patent/WO2002035062A1/en
Priority to AU2001296155A priority patent/AU2001296155A1/en
Publication of SE516968C2 publication Critical patent/SE516968C2/en
Publication of SE0003881L publication Critical patent/SE0003881L/en

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B1/00Percussion drilling
    • E21B1/02Surface drives for drop hammers or percussion drilling, e.g. with a cable
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B44/00Automatic 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
    • E21B44/02Automatic control of the tool feed

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

Method of rock drilling with a percussion rock drilling machine (2) to which a drill string (18) comprising parts (31, 32, 33, 19) screwed together is connected. In order to obtain efficient loosening of the screw joints and reduced drilling time the feed force is reduced at a predetermined distance (37) from a predetermined hole bottom (36) at the same time as the drill string (18) is exerted to impacts with substantially unchanged strength until the drill hole has been completed.

Description

»bara 5, 6 9,, 2 borrsträngen. Förskjutningen av bergborrmaskinen sker med hjälp av en tryckmediumcylinder 3 och en matningslina 7. I praktiken, ej visat, finns det också en matningslina för returrnatning av bergborrmaskinen. Tryckrnediumcylindern 3 har en första ände 4 som är fast ansluten till matarbalken 1 och en andra ände 5 som är rörlig i förhållande till matarbalken 1. I det visade exemplet är det tryckrnediumcylindems 3 kolvstång 12 som är fast ansluten till matarbalken 1. Man kan också vända på tryckmediumcylindem 3 så att den rörliga änden 5 är anordnad på kolvstången 12. »Only 5, 6 9 ,, 2 drill string. The displacement of the rock drilling machine takes place by means of a pressure medium cylinder 3 and a feed line 7. In practice, not shown, there is also a feed line for return night of the rock drilling machine. 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 1. In the example shown it is the piston rod 12 of the pressure medium cylinder 3 which is fixedly connected to the feed beam 1. It is also possible to turn on the pressure medium cylinder 3 so that the movable end 5 is arranged on the piston rod 12.

Tryckmediumcylinderns 3 rörliga ände 5 uppbär ett linhjul 6. Matningslinan 7 som är förd över linhjulet 6 är med ena änden fäst i matarbalken 1 och med andra änden förbunden med borrmaskinens 2 släde 21. Med detta arrangemang drivs borrmaskinen 2 längs matarbalken l med dubbelt så hög hastighet som den rörliga änden 5 på tryckmediumcylindern 3.The movable end 5 of the pressure medium cylinder 3 carries a pulley 6. The feed line 7 which is passed over the pulley 6 is attached at one end to the feed beam 1 and at the other end connected to the carriage 21 of the drilling machine 2. With this arrangement the drill 2 is driven along the feed beam 1 twice as high speed as the movable end 5 of the pressure medium cylinder 3.

Bergbomingsanordningen är försedd med en slangvinda, markerad medelst ett stöd 13, och ett borrstöd vid mitten av borrsträngen 18, markerad medelst ett stöd 14. Detta innebär att slangvindan 15 och borrstödet 16 drivs längs matarbalken 1 med samma hastighet som tryckmediumcylinderns 3 rörliga ände 5 på sedvanligt sätt. Stöden 13,14 är försedda med punkter 9,10 mellan vilka en ytterligare lina 8 är anordnad. Denna ytterligare lina är förd, ett eller flera varv, runt ett hjul 17 på en mätanordning 11 som är fast anordnad på matarbalken 1. Mätanordningen 11 avger pulser motsvarande bergborrmaskinens 2 förskjutning längs matarbalken 1. Efterom mätkablama är anslutna till ett uttag 22 på mätanordningen 11 är mätkablarna fast anordnade relativt matarbalken 1 och utsätts således inte för de belastningar som vibrerande tryckmediumslangar utgör.The rock boom device is provided with a hose reel, marked by a support 13, and a drill support at the center of the drill string 18, marked by a support 14. This means that the hose reel 15 and the drill support 16 are driven along the feed beam 1 at the same speed as the movable end 5 of the pressure medium cylinder 3. usual way. The supports 13,14 are provided with points 9,10 between which a further line 8 is arranged. This further line is passed, one or more turns, around a wheel 17 on a measuring device 11 which is fixedly arranged on the feed beam 1. The measuring device 11 emits pulses corresponding to the displacement of the rock drilling machine 2 along the feed beam 1. After the measuring cables are connected to a socket 22 on the measuring device 11 the measuring cables are fixedly arranged relative to the supply beam 1 and are thus not exposed to the loads which vibrating pressure medium hoses constitute.

Bergborrmaskinens 2 läge längs matarbalken 1 mäts genom att pulsema från mätanordningen 11 räknas i en styrenhet 35 vars ingång 41 är förbunden med uttaget 22.The position of the rock drilling machine 2 along the feed beam 1 is measured by counting the pulses from the measuring device 11 in a control unit 35 whose input 41 is connected to the socket 22.

Styrenheten 35 är så anordnad att den håller reda på var borrkronan 19 befinner sig även vid skam/ning eller avkortning av borrsträngen 18. Tryckmediumcylindem 3 är försedd med anslutningar 42, 43 för tryckmedium. Som anges med ledningarna 44, 45 styrs tryckmediumtillförseln till anslutningarna 42, 43 av styrenheten 35. Medelst ledningen 46 markeras att styrenheten 35 även styr bergborrmaskinens 2 slagverk och rotationen av borrsträngen 18.The control unit 35 is arranged so that it keeps track of where the drill bit 19 is located even in the event of shame or shortening of the drill string 18. The pressure medium cylinder 3 is provided with connections 42, 43 for pressure medium. As indicated by lines 44, 45, the supply of pressure medium to the connections 42, 43 is controlled by the control unit 35. By means of the line 46 it is marked that the control unit 35 also controls the percussion of the rock drilling machine 2 and the rotation of the drill string 18.

Vid borrningen skall man borra till en förutbestämd hålbotten 36. Detta görs genom att bergborrmaskinen 2 drivs mot underlaget 34 samt att borrsträngen 18 roteras och utsätts för 516 968 3 slag i riktning mot underlaget. Vid borrningen används en eller flera borrstänger 32, 33 anslutna till nackadaptern 31. Borrkronans 19 läge mäts och lagras i styrenheten 35. Det i styrenheten lagrade värdet används för att beräkna kvarvarande avsånd till hålbotten 36.When drilling, drill to a predetermined hole bottom 36. This is done by driving the rock drilling machine 2 against the substrate 34 and by rotating the drilling string 18 and subjecting it to 516 968 3 strokes in the direction of the substrate. When drilling, one or more drill rods 32, 33 connected to the neck adapter 31 are used. 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.

När borrkronan 19 befinner sig på ett förutbestämt avstånd 37 från hålbotten 36 reduceras matningskraften på borrkronan genom att tillförseln av tryckrrlediurn till anslutningen 42 stryps. Under slutfasen av borrningen bibehålles slagstyrkan mot borrsträngen 18 i huvudsak oförändrad.When the drill bit 19 is at a predetermined distance 37 from the hole bottom 36, the feed force on the drill bit is reduced by restricting the supply of the pressure pipe diameter to the connection 42. During the final phase of the drilling, the impact strength against the drill string 18 is maintained substantially unchanged.

Claims (1)

51 s m 4 Patentkrav:51 s m 4 Patent claims: 1. Förfarande för bergborrning med en slående bergborrmaskin (2), till vilken en borrsträng (18) innefattande med varandra sammanskruvade delar (31,32,33,19) är ansluten, innefattande drivning av bergborrmaskinen (2) mot ett underlag (34), rotering av borrsträngen (18) samt utsättande av borrsträngen ( 18) för slag i riktning mot underlaget (34), k ä n n e t e c k n at d ä r a v att bergborrmaskinens (2) förskjutning mot underlaget (34) mäts och lagras i en styrenhet (35), att det i styrenheten lagrade värdet används för bestämning av resterande avstånd till en förutbestämd hålbotten (36) samt att den kraft medelst vilken bergborrmaskinen (2) drivs mot underlaget (34) på ett förutbestämt avstånd (37) från hålbottnen (36) reduceras samtidigt som borrsträngen (18) utsätts för slag med i huvudsak oförändrad styrka.A method of rock drilling with a striking rock drilling machine (2), to which a drilling string (18) comprising mutually screwed parts (31,32,33,19) is connected, comprising driving the rock drilling machine (2) against a substrate (34) , rotation of the drill string (18) and subjecting the drill string (18) to blows in the direction of the substrate (34), characterized in that the displacement of the rock drilling machine (2) towards the substrate (34) is measured and stored in a control unit (35). ), that the value stored in the control unit is used to determine the remaining distance to a predetermined hole bottom (36) and that the force by which the rock drilling machine (2) is driven against the ground (34) at a predetermined distance (37) from the hole bottom (36) is reduced. at the same time as the drill string (18) is subjected to blows of substantially unchanged strength.
SE0003881A 2000-10-26 2000-10-26 Procedure for rock drilling SE0003881L (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE0003881A SE0003881L (en) 2000-10-26 2000-10-26 Procedure for rock drilling
PCT/SE2001/002271 WO2002035062A1 (en) 2000-10-26 2001-10-18 Method of rock drilling
AU2001296155A AU2001296155A1 (en) 2000-10-26 2001-10-18 Method of rock drilling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0003881A SE0003881L (en) 2000-10-26 2000-10-26 Procedure for rock drilling

Publications (3)

Publication Number Publication Date
SE0003881D0 SE0003881D0 (en) 2000-10-26
SE516968C2 true SE516968C2 (en) 2002-03-26
SE0003881L SE0003881L (en) 2002-03-26

Family

ID=20281565

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0003881A SE0003881L (en) 2000-10-26 2000-10-26 Procedure for rock drilling

Country Status (3)

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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE543372C2 (en) * 2019-03-29 2020-12-22 Epiroc Rock Drills Ab Drilling machine and method for controlling a drilling process of a drilling machine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE447502B (en) * 1982-06-22 1986-11-17 Cerac Inst Sa FEEDING DEVICE AT THE MOUNTAIN DRILL CONDITION FOR DRILLING WITH SCREWS
US4995465A (en) * 1989-11-27 1991-02-26 Conoco Inc. Rotary drillstring guidance by feedrate oscillation
FR2663680B1 (en) * 1990-06-26 1992-09-11 Eimco Secoma ANCHORING EFFORT CONTROL DEVICE FOR A DRILLING SLIDE.
JP2941717B2 (en) * 1996-08-21 1999-08-30 中小企業事業団 Drill drill control system

Also Published As

Publication number Publication date
WO2002035062A1 (en) 2002-05-02
AU2001296155A1 (en) 2002-05-06
SE0003881L (en) 2002-03-26
SE0003881D0 (en) 2000-10-26

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