SE520421C2 - Procedure for rock drilling - Google Patents
Procedure for rock drillingInfo
- Publication number
- SE520421C2 SE520421C2 SE0103880A SE0103880A SE520421C2 SE 520421 C2 SE520421 C2 SE 520421C2 SE 0103880 A SE0103880 A SE 0103880A SE 0103880 A SE0103880 A SE 0103880A SE 520421 C2 SE520421 C2 SE 520421C2
- Authority
- SE
- Sweden
- Prior art keywords
- rock
- pressure
- drilling machine
- rock drilling
- feed
- Prior art date
Links
- 239000011435 rock Substances 0.000 title claims abstract description 41
- 238000005553 drilling Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 6
- 238000009527 percussion Methods 0.000 claims description 11
- 230000011514 reflex Effects 0.000 claims description 4
- 235000014676 Phragmites communis Nutrition 0.000 claims 1
- 238000005259 measurement Methods 0.000 claims 1
- 230000007704 transition Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 3
- 238000013016 damping Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
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
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Earth Drilling (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
Description
_Aio1oba;.d0« 5 2 0 4 2 1 stångsatsen och från stångsatsen till borrkronan 31. Imaskinhuset 3 är en hylsa 15 och en kolv 8 glidbart anordnade. Dessa överför en av trycket i en första kammare 5 bestämd kraft till adaptern 2. Detta tryck verkar framåt på en yta 17. Denna kraft används för att under bormingen hålla samman stängemai stångsatsen. Kammaren 5 är ansluten till en ackumulator 6 som tillförs tryckvätska från en tryckvätskekälla 16 via en regleranordning 26 och en ledning 22. Kolven 8 är med snäv passning införbar i en andra kammare 7. Detta innebär att rekylen från berget effektivt dämpas genom att vätska pressas ut genom den smala spalten mellan kolven 8 och maskinhuset 3. För att undvika kavitation då kolven 8 rör sig ut ur kammaren 7 är en backventil 9 anordnad mellan de första och andra karnrama och riktad så att vätskeflöde tillåts från den första kammaren 5 till den andra kammaren 7. _Aio1oba; .d0 «5 2 0 4 2 1 the rod set and from the rod set to the drill bit 31. In the machine housing 3 a sleeve 15 and a piston 8 are slidably arranged. These transmit a force determined by the pressure in a first chamber 5 to the adapter 2. This pressure acts forwards on a surface 17. This force is used to hold the rod assembly together during drilling. The chamber 5 is connected to an accumulator 6 which is supplied with pressure fluid from a pressure fluid source 16 via a control device 26 and a line 22. The piston 8 can be inserted into a second chamber 7 with a tight fit. This means that the recoil from the rock is effectively damped by forcing fluid out through the narrow gap between the piston 8 and the machine housing 3. To avoid cavitation when the piston 8 moves out of the chamber 7, a non-return valve 9 is arranged between the first and second vessel frames and directed so that liquid fl is allowed from the first chamber 5 to the second chamber 7.
Karnrarna 5 och 7 utgör tillsammans en reflexdämpare 21. Bergborrmaskinen är på sedvanligt sätt fram och åter rörlig längs en matarbalk 32 medelst en icke visad matningsmotor. I det visade exemplet utgöres borrverktyget av en rörsats och en däri anordnad stångsats. Borrverktyget kan givetvis alternativt bestå av en sedvanlig borrstång.The carriages 5 and 7 together form a re-damping damper 21. The rock drilling machine is in the usual way reciprocable along a feed beam 32 by means of a feed motor (not shown). In the example shown, the drilling tool consists of a pipe set and a rod set arranged therein. The drilling tool can of course alternatively consist of a conventional drill rod.
Det i fig 2 visade styrsystemet för bergborrningsförfarandet innefattar en styrenhet 34 försedd med ett minne 44 för lagring av olika borrningsvärden. Till styrenheten 34 är ansluten en givare 35 för trycket i reflexdärnparen 21, en givare 36 för trycket till den icke visade matningsmotom som förskjuter bergborrmaskinen 3 längs matarbalken 32, en givare 37 för trycket till rotationsmotorn 12 och en givare 38 för trycket som driver slagkolven 4 fram och åter, slagverkstrycket. Styrenheten 34 är anordnad att styra ett antal ventiler, exempelvis venilen 39 för reducering av flödet genom reflexdämparen 21, ventilen 40 som styr flödet till matningsmotom, ventilen 41 som styr trcket till matningsmotom, ventilen 42 som styr flödet genom rotationsmotom och ventilen 43 som styr trycket till slagverket för styrning av slagkolvens 4 fram och åter gående rörelse.The control system for the rock drilling method shown in Fig. 2 comprises a control unit 34 provided with a memory 44 for storing different drilling values. Connected to the control unit 34 is a sensor 35 for the pressure in the reflector pair 21, a sensor 36 for the pressure of the feed motor (not shown) which displaces the rock drill 3 along the feed beam 32, a sensor 37 for the pressure of the rotary motor 12 and a sensor 38 for the pressure driving the percussion piston 4. back and forth, percussion pressure. The control unit 34 is arranged to control a number of valves, for example the valve 39 for reducing the flow through the reflex damper 21, the valve 40 which controls the flow to the feed motor, the valve 41 which controls the pressure to the feed motor, the valve 42 which controls the flow through the rotary motor and the valve 43 which controls the pressure to the percussion device for controlling the reciprocating movement of the percussion piston 4.
Bergbormingsförfarandet med den visade bergbormingsanordningen utföres på följande sätt. Trycket i reflexdämparen 21 avläses med givaren 35 och lagras i minnet 44 i styrenheten 34. Detta är ett tomgångsdämpartryck som används som referensvärde.The rock drilling process with the rock drilling device shown is performed in the following manner. The pressure in the reflex damper 21 is read with the sensor 35 and stored in the memory 44 in the control unit 34. This is an idle damper pressure which is used as a reference value.
Därefter matas bergborrmaskinen 3 längs matarbalken 32 mot berget 33 genom att ventilema 40 för matningsflöde och 41 för matningstryck öppnas något av styrenheten 34.Thereafter, the rock drilling machine 3 is fed along the feed beam 32 towards the rock 33 by the valves 40 for feed flow and 41 for feed pressure being opened slightly by the control unit 34.
Inga andra funktioner aktiveras i detta skede. Det väsentliga är dock att slagverket förblir 520 421 _ 3 inaktivt under denna matningsrörelse. Rotation kan få ske under denna framrnatnin g mot berget. I detta tillstånd väntar man på att borrkronan 31 skall nå berget 33. Matningen mot berget avbryts när trycket i reflexdämparen 21 överstiger referensvärdet med ett förutbestämt belopp, exempelvis 10 bar. Genom att minska dämparflödet med ventilen 39 kan man erhålla detektering av bergkontakt vid en rnindre tryckökning än annars. När bergkontakt detekteras lagras bergborrmaskinens position längs matarbalken 32 i minnet 44. Därefter backas bergborrmaskinen en kort sträcka så att borrkronan 31 går fri från berget. Rotation och spolning aktiveras. Ventilema 40, 41 och 42 öppnas så att slagverket aktiveras med lågt tryck, påhuggstryck, och matning framåt startar med låg hastighet.No other functions are activated at this stage. The important thing, however, is that the percussion remains 520 421 _ 3 inactive during this feeding movement. Rotation may take place during this advance towards the rock. In this state, it is waited for the drill bit 31 to reach the rock 33. The supply to the rock is interrupted when the pressure in the reflex damper 21 exceeds the reference value by a predetermined amount, for example 10 bar. By reducing the damper fate with the valve 39, detection of rock contact can be obtained at a lower pressure increase than otherwise. When rock contact is detected, the position of the rock drill is stored along the feed beam 32 in the memory 44. Thereafter, the rock drill is backed for a short distance so that the drill bit 31 moves free from the rock. Rotation and flushing are activated. Valves 40, 41 and 42 are opened so that the percussion is activated at low pressure, cut-off pressure, and feed forward starts at low speed.
Denna borrning sker en kort sträcka framför den position som lagrats i minnet 44. Därefter ökas slagverkstryck och och matningstryck under en viss tid till de värden som gäller för nonnal bonning. Därefter borras hålet klart.This drilling takes place a short distance in front of the position stored in the memory 44. Thereafter, percussion pressure and and feed pressure are increased for a certain time to the values that apply to normal dwelling. Then the hole is drilled clearly.
Claims (2)
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0103880A SE520421C2 (en) | 2001-11-22 | 2001-11-22 | Procedure for rock drilling |
DE60215689T DE60215689T2 (en) | 2001-11-22 | 2002-11-07 | rock drilling |
EP02783930A EP1446554B1 (en) | 2001-11-22 | 2002-11-07 | Method of rock drilling |
PT02783930T PT1446554E (en) | 2001-11-22 | 2002-11-07 | Method of rock drilling |
AU2002347731A AU2002347731B2 (en) | 2001-11-22 | 2002-11-07 | Method of rock drilling |
CA2467818A CA2467818C (en) | 2001-11-22 | 2002-11-07 | Method of rock drilling |
PCT/SE2002/002028 WO2003044319A1 (en) | 2001-11-22 | 2002-11-07 | Method of rock drilling |
AT02783930T ATE343707T1 (en) | 2001-11-22 | 2002-11-07 | ROCK DRILLING PROCESS |
ES02783930T ES2275013T3 (en) | 2001-11-22 | 2002-11-07 | ROCKING PERFORATION METHOD. |
ZA200403670A ZA200403670B (en) | 2001-11-22 | 2004-05-13 | Method of rock drilling. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0103880A SE520421C2 (en) | 2001-11-22 | 2001-11-22 | Procedure for rock drilling |
Publications (3)
Publication Number | Publication Date |
---|---|
SE0103880D0 SE0103880D0 (en) | 2001-11-22 |
SE0103880L SE0103880L (en) | 2003-05-23 |
SE520421C2 true SE520421C2 (en) | 2003-07-08 |
Family
ID=20286059
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE0103880A SE520421C2 (en) | 2001-11-22 | 2001-11-22 | Procedure for rock drilling |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP1446554B1 (en) |
AT (1) | ATE343707T1 (en) |
AU (1) | AU2002347731B2 (en) |
CA (1) | CA2467818C (en) |
DE (1) | DE60215689T2 (en) |
ES (1) | ES2275013T3 (en) |
PT (1) | PT1446554E (en) |
SE (1) | SE520421C2 (en) |
WO (1) | WO2003044319A1 (en) |
ZA (1) | ZA200403670B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE529230C2 (en) | 2004-12-10 | 2007-06-05 | Atlas Copco Rock Drills Ab | Device and method of drilling in rock |
SE532464C2 (en) | 2007-04-11 | 2010-01-26 | Atlas Copco Rock Drills Ab | Method, apparatus and rock drilling rig for controlling at least one drilling parameter |
SE532482C2 (en) * | 2007-04-11 | 2010-02-02 | Atlas Copco Rock Drills Ab | Method, apparatus and rock drilling rig for controlling at least one drilling parameter |
EP3260647B1 (en) * | 2016-06-22 | 2019-08-07 | Sandvik Mining and Construction Oy | Rock drill |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3561542A (en) * | 1969-03-20 | 1971-02-09 | Gardner Denver Co | Control system for rock drills |
FR2250014A1 (en) * | 1973-11-07 | 1975-05-30 | Secoma | |
SE463193B (en) * | 1989-02-21 | 1990-10-22 | Atlas Copco Mct Ab | DEVICE WITH BATTERY MACHINERY |
SE508064C2 (en) * | 1993-10-15 | 1998-08-17 | Atlas Copco Rock Drills Ab | Rock drilling device with reflex damper |
-
2001
- 2001-11-22 SE SE0103880A patent/SE520421C2/en not_active IP Right Cessation
-
2002
- 2002-11-07 CA CA2467818A patent/CA2467818C/en not_active Expired - Lifetime
- 2002-11-07 AU AU2002347731A patent/AU2002347731B2/en not_active Expired
- 2002-11-07 AT AT02783930T patent/ATE343707T1/en active
- 2002-11-07 PT PT02783930T patent/PT1446554E/en unknown
- 2002-11-07 ES ES02783930T patent/ES2275013T3/en not_active Expired - Lifetime
- 2002-11-07 EP EP02783930A patent/EP1446554B1/en not_active Expired - Lifetime
- 2002-11-07 DE DE60215689T patent/DE60215689T2/en not_active Expired - Lifetime
- 2002-11-07 WO PCT/SE2002/002028 patent/WO2003044319A1/en active IP Right Grant
-
2004
- 2004-05-13 ZA ZA200403670A patent/ZA200403670B/en unknown
Also Published As
Publication number | Publication date |
---|---|
WO2003044319A1 (en) | 2003-05-30 |
ES2275013T3 (en) | 2007-06-01 |
CA2467818C (en) | 2010-04-27 |
DE60215689T2 (en) | 2007-05-10 |
SE0103880D0 (en) | 2001-11-22 |
ZA200403670B (en) | 2005-07-27 |
EP1446554B1 (en) | 2006-10-25 |
SE0103880L (en) | 2003-05-23 |
CA2467818A1 (en) | 2003-05-30 |
ATE343707T1 (en) | 2006-11-15 |
DE60215689D1 (en) | 2006-12-07 |
PT1446554E (en) | 2007-02-28 |
AU2002347731A1 (en) | 2003-06-10 |
EP1446554A1 (en) | 2004-08-18 |
AU2002347731B2 (en) | 2006-11-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |