EP0280705A1 - Verfahren und vorrichtung zum herstellen von bohrlöchern aus einer gegenüber der bohrlochachse abgewinkelten position heraus. - Google Patents
Verfahren und vorrichtung zum herstellen von bohrlöchern aus einer gegenüber der bohrlochachse abgewinkelten position heraus.Info
- Publication number
- EP0280705A1 EP0280705A1 EP87905613A EP87905613A EP0280705A1 EP 0280705 A1 EP0280705 A1 EP 0280705A1 EP 87905613 A EP87905613 A EP 87905613A EP 87905613 A EP87905613 A EP 87905613A EP 0280705 A1 EP0280705 A1 EP 0280705A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drilling
- drill
- bearing blocks
- guide
- flexible
- 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.)
- Granted
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 13
- 239000000314 lubricant Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 6
- 229910000639 Spring steel Inorganic materials 0.000 claims description 4
- 229910000897 Babbitt (metal) Inorganic materials 0.000 claims description 2
- 238000005219 brazing Methods 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims 5
- 230000037431 insertion Effects 0.000 claims 5
- 238000005096 rolling process Methods 0.000 claims 2
- 125000006850 spacer group Chemical group 0.000 claims 2
- 238000010521 absorption reaction Methods 0.000 claims 1
- 238000003466 welding Methods 0.000 claims 1
- 238000005520 cutting process Methods 0.000 description 8
- 238000005065 mining Methods 0.000 description 6
- 239000011435 rock Substances 0.000 description 6
- 238000005461 lubrication Methods 0.000 description 5
- 238000009412 basement excavation Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000002360 explosive Substances 0.000 description 4
- 238000004873 anchoring Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011513 prestressed concrete Substances 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
- E21D21/006—Anchoring-bolts made of cables or wires
Definitions
- the invention relates to a method and a device for producing boreholes from a position angled with respect to the borehole axis, in which the machine-technical system chosen for producing the boreholes has a spatially movable drill carriage and a drilling machine axially movable thereon.
- Angled drilling is necessary and useful wherever holes are to be produced from narrow spaces, the length of which is greater than the geometric dimensions of the cavities. In this case, however, the prerequisite must be met that if the two spatial coordinates, in the plane of which the borehole or the boreholes are to be produced, are narrowly limited, there is sufficient space for the drilling device in the direction of the third coordinate perpendicular to this plane and the feed of the drilling device is present, which must correspond to the depth of the borehole.
- angled drilling - particularly in mining and tunneling - is a useful area of application, since there is sufficient length in most cases with a narrow cross-section of the mine rooms, for example in shafts, blind shafts, sections, tunnels , Hitting and striving.
- a drilling method that has been used for many years, but not yet successful, to operate uses a special "flexible shaft", which consists of two mutually oppositely arranged, counter-rotating '' There are wire springs with a special wire cross section. In principle, this shaft can be angled; when the torque required for drilling is transmitted, the inner helix should widen, while it is assumed that the diameter of the outer helix will decrease. This is intended to achieve a certain stiffening effect.
- the method theoretically attributed to the method has so far not been able to be implemented for operational use despite many years of attempts over many successive stages of development.
- HDW high pressure water technology
- this technique can preferably only be used for the production of anchor boreholes, but less for the production of explosive boreholes.
- the drilling progress will not be insignificantly lower than the drilling progress in rotating or rotary drilling due to the knowledge currently available.
- a very considerable volume flow of water and cuttings is generated during the drilling times, for which separate discharge devices must be provided, since the bedrock surrounding the mining sections is often water-sensitive under the influence of water shows a significant decrease in strength and tends to swell.
- the invention has for its object to avoid the disadvantages of the aforementioned known methods. It follows the guiding principle of deflecting and guiding a flexible linkage of a very special design, which allows the transmission of high pressure forces and high torques, in a predetermined curve.
- the device on which the invention is based which is based on normal male (and thus can be placed on already existing) drill carriages, in contrast to all other previously proposed methods for the removed.
- angled drilling also the use of rotary impact or impact drilling.
- the drilling method according to the invention is particularly suitable for the manufacture of explosive and anchor boreholes. However, it is also suitable for the production of boreholes that serve completely different purposes. There is a direct need to use the method, for example in the manufacture of anchor boreholes in excavation lines using partial cutting machines, in the anchoring of areas at risk of breaking out in struts and in the manufacture of explosive holes in the lying open excavation zones.
- Mining routes must be arranged horizontally for rock mechanical reasons. It is furthermore expedient here to lead a short strut ahead of the actual point of ascent of the excavation section, ie the point at which the lying rock is torn down. With this method, it is advisable to make the blast holes perpendicular to the line axis, ie in the so-called rung construction. Given the length of the blast holes, this is only possible with angled drilling. If the seam thickness is less, it is also necessary to produce the anchor boreholes for the preliminary expansion between the leading strut and the final route expansion by means of the angled drilling.
- Fig. 1 with a general view of the drill
- Drill carriage and attached device according to the invention for angled drilling Drill carriage and attached device according to the invention for angled drilling
- Fig. 2 the front end of the drill carriage with attached bow guide
- Fig. 3 an arch guide for flexible drilling rods using roller bearings
- Fig. 6 is a view of the flexible drill pipe with the drill bit attached
- Fig. 7 is a cross-section through a bock Wälzlager ⁇ and '
- Fig. 8 shows an embodiment with a rotating union for the additional application of the ultra high pressure water technology.
- Figure 1 shows the drilling device according to the invention for angled drilling on a drilling carriage 1 with a rotatable and pivotable boom 2 and a movable carriage 3 attached to its free end.
- the drilling device according to the invention can just as well be on a drilling carriage with wheel drive or on a pre- « drive machine, it can be in a walking arranged in tension or attached to a monorail.
- the drill 4 which is known per se, can be moved in the axial direction on the movable carriage 3, which can be designed as a rotary drill, rotary impact drill or impact rotary drill and has built-in feed devices.
- the flexible drill rod 5 is attached to the drive shaft stub of the rotary drilling machine 4 in an easily detachable manner, at the front end of which the drill bit 6 is arranged.
- the bow guide '7 are also attached and' displaceable bearings 8 are arranged which take over the guidance of the flexible drill pipe 5 between the drill 4 and the bow guide 7.
- the displaceable bearing blocks 8 are first unlocked and then taken along by the drilling machine and moved against the arch guide 7, when the flexible drilling rod 5 is retrieved they are then taken back into theirs Bring home position and locked there again.
- the front end of the drill carriage 3 with the bow guide 7, the first two is displaceable baren bearings, the feed and return devices and the locking devices.
- the arch guide is the concept variant with bearing blocks 9, between which drill bits 10 are arranged, preferably welded.
- the bearing blocks 9 are shown in section, the pipe pieces 10 located therebetween in section.
- the distance between the bearing blocks can be more or less large. For example, it can be 20 to 30 cm for producing anchor drill holes in the case of very kink-stable drill rods or shrink to zero in the case of less kink-stable drill rods, ie the bearing blocks 9 abut one another directly and the tubular intermediate pieces.
- the flexible drill pipe 5 is guided concentrically through the bearing blocks 9 and the tubular intermediate pieces 10.
- the arch guide is firmly connected to the drilling mount 3 via fastening brackets 11, preferably screwed or welded.
- the drill carriage 3 which serves as a guideway and slideway for the drilling machine and the displaceable bearing blocks 8, can be designed in very different ways; in the illustrated embodiment, it consists of two I-beams arranged side by side, the upper outer one Flanges 12 are gripped by corresponding claw-shaped guide elements 13 of the displaceable bearing blocks 8 and the drilling machine.
- Ribs 14, on which return devices 15 of different lengths are attached are preferably located on both sides of the movable bearing blocks 8.
- the return devices which are preferably also arranged on both sides of the movable bearing blocks, can consist of rods or ropes.
- a pair of rods or cables 15 is assigned to each displaceable bearing block 8.
- the rods or ropes are fastened to the drilling machine 4. They can be permanently attached on one side, ie either on the drilling machine 4 or on the displaceable bearing blocks 8 and must be axially displaceable at the other ends in corresponding bores so that they can be retracted into their starting position when the flexible drill pipe 5 is retracted.
- the return devices 15 are designed as rods and are fixedly attached to the drilling machine 4 while piercing the lateral ribs 14 of the displaceable bearing blocks 8 in holes 16. During the return process, the stop heads 17 of the Nenden ropes or rods 15 to the lateral ribs 14 of the movable bearing blocks 8, so that the bearing blocks 5 are returned geometrically precisely in their starting position shown in Figure 2 when retracting the drill 4 and the flexible Bohrges 5.
- the locking devices 18 are pressed into the bores 19 via springs 20, so that a positive locking takes place.
- the drilling machine or the respectively adjacent bearing blocks with a corresponding nose bump against the surfaces 21 of the locking devices 18 so that they turn against the force of the springs 20 with their free ends out of the bores 19 and thus the locks are released.
- the drilling machine 4 presses against the end face 22 of the first bearing block and each bearing block 8 against its neighbor 8 arranged in the drilling direction, so that these are taken along during the further drilling process.
- the bearing bracket on the borehole at the end of the arch guide is encompassed by a sealing sleeve 23 which is clamped to the bracket by means of the clamps 24 and with its free ends 25 surrounds the flexible drill string 5 in a sealing manner, so that no water or cuttings can penetrate the arch guide.
- Figure 3 shows a construction variant of the sheet guide, in which the bearing blocks 9 are arranged directly next to one another.
- two strong pairs of strips 26, 27 are arranged on the outer surfaces of the bearing blocks 9 in this exemplary embodiment, each offset by 90 degrees from one another, of which the strip pair 26 has a larger cross section and thus a greater resistance moment than the pair of strips 27, because the support forces resulting from the pressing force have to be absorbed in the sheet guide by the former.
- the pairs of strips are fastened to the bearing blocks 9 by means of screws 28, so that overall an extremely dimensionally stable arch guidance results.
- the flexible drill pipe is enclosed by a rotatable guide piece 29.
- the entire arch guide is covered with an accordion-shaped sealing hose 30 made of rubber or plastic material, which at its end facing the borehole merges into the sealing collar 23, which rests with its lips 25 on the flexible drill rod 5 in a sealing manner.
- Figure 4 shows an embodiment for the bow guide, in which the flexible drill pipe 5 is slidably supported within a curved tube 31 with sufficient movement.
- the tubular bow guide - similar to the exemplary embodiments according to FIGS. 2 and 3 - is provided with a sealing collar 23, which rests with its lips 25 on the flexible drill rod 5 in a sealing manner.
- the sheet guide is firmly connected to the drilling mount 3 via supports 11 so that the corresponding deflection forces can be transferred into the drilling mount 3 during the deflection process as a result of the pressing forces.
- the tubular bow guide is supplied with lubricant, preferably grease, via a lubrication line 32 and lubrication bores 33 in order to reduce the frictional resistance and the frictional lock between the flexible drill pipe and the bow guide.
- lubricant preferably grease
- the Lubrication system is connected to a lubrication pump, not shown, which is driven by the drilling machine, so that lubricant is constantly fed during drilling.
- lubrication pump not shown
- Figure 5 shows a possible cross section of the flexible drill pipe 5.
- the drill pipe is constructed in the manner of a rope (prestressed concrete strand) from relatively strong wires or rods 35, which with a relatively low cabling factor around the core 36 designed as a tube
- the direction of rotation of the torque during rotating, rotary impact or impact rotation drilling must match the direction of the twist during stranding.
- the core 36 is therefore designed as a tube so that the drilling fluid required can be supplied to the drill bit.
- the stranding factor can be relatively low; there are Embodiments are possible in which the stranding factor is only two to three revolutions per meter of flexible drill pipe.
- spring steel or spring steel-like materials are provided as the material in order to be able to withstand the high alternating bending stresses to which the drill pipe in the area of the bend guide is exposed.
- the number of rods or wires 35 that are wound around the hollow core 36 can be very different. It depends on the borehole diameter and the resulting torques and pressure forces.
- the flexible drill pipe of the form described above is extremely kink-resistant, so that, according to the exemplary embodiment shown in FIG. 2, the distance between the bearing blocks 9 in the arch guide 7 and the distance between the displaceable bearing blocks 8 can be relatively large.
- the high buckling stiffness and the special structure of the flexible drill pipe according to Figure 5 make it possible for blows to be transmitted via the pipe linkage, so that in spite of being bent, rotational and percussion drilling is possible.
- FIG. 6 shows an exemplary embodiment for fastening the drill bit to the flexible drill pipe in accordance with Figure 5 shown.
- the drill bit 37 with its standardized fastening, is inserted in the drill bit holder 38, which has four guide ribs 39, each offset by 90 degrees.
- the drill bit can be designed quite differently in accordance with the rock to be drilled and the selected drilling method and can have two or more cutting edges 40, which are preferably equipped with hard metal plates 41.
- the attachment between the drill bit holder and the flexible drill pipe can also be very different.
- the internally hollow Bohrkronenharm may be made of cold deformability of steel and Barem 'with high compressive forces on the flexible drill string (as shown in Figure 5) are pressed. This results in a sufficiently high degree of adhesion to be able to transmit the torques, the pressing forces and the impact loads and not to be stripped when the drill pipe is pulled back.
- the drill bit holder it is also possible to solder or weld the drill bit holder to the flexible drill rod. If the drill pipe is made of spring steel or materials similar to spring steel, a brazing joint is recommended. The diameters of the flexible drill pipe, drill bit holder and drill bit are graded against each other.
- Figure 7 shows a sectional view of a possible exemplary embodiment for the bearing blocks 8 and 9.
- two shoulder bearings 44 are arranged, which together allow axial forces to be absorbed in both directions.
- a guide piece 29 designed as a sliding bush, which preferably consists of bearing metal and has helical recesses 45 in which the weakly stranded rods or wires 35 of the flexible drill rod 5 move axially relative to the bearing blocks 8 and 9 can be.
- a lubrication system with the bores 46 and 47 ensures that both the shoulder bearings 44 are adequately supplied with lubricant and that the recesses 45 provided for the axial movement between the drill rod 5 and the guide piece 29 receive lubricant.
- Sealing rings 48 arranged on both sides of the bearing blocks prevent the ingress of water and dirt and the escape of lubricants.
- shoulder bearings instead of the shoulder bearings, another example, spherical roller bearings are also used.
- the rotary feedthrough consists of 2 x 3 seal packs 49, 50, which are arranged symmetrically on both sides of the high-pressure water supply 51.
- the two seal sets 50 closest to the HDW supply are subjected to high-viscosity oil on their back, which is brought to a pressure of 5 to 10% higher than the maximum pressure water in a pressure intensifier 52. In this way, the seals 50 most at risk are relieved of pressure and lubricated at the same time.
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Earth Drilling (AREA)
- Drilling Tools (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT87905613T ATE72875T1 (de) | 1986-08-29 | 1987-08-27 | Verfahren und vorrichtung zum herstellen von bohrloechern aus einer gegenueber der bohrlochachse abgewinkelten position heraus. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3629366 | 1986-08-29 | ||
DE19863629366 DE3629366A1 (de) | 1986-08-29 | 1986-08-29 | Verfahren und vorrichtung zum herstellen von bohrloechern aus einer gegenueber der bohrlochachse abgewinkelten position heraus |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0280705A1 true EP0280705A1 (de) | 1988-09-07 |
EP0280705B1 EP0280705B1 (de) | 1992-02-26 |
Family
ID=6308437
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19870905613 Expired - Lifetime EP0280705B1 (de) | 1986-08-29 | 1987-08-27 | Verfahren und vorrichtung zum herstellen von bohrlöchern aus einer gegenüber der bohrlochachse abgewinkelten position heraus |
Country Status (5)
Country | Link |
---|---|
US (1) | US4905777A (de) |
EP (1) | EP0280705B1 (de) |
AT (1) | ATE72875T1 (de) |
DE (2) | DE3629366A1 (de) |
WO (1) | WO1988001677A1 (de) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3905999C1 (de) * | 1989-02-25 | 1990-01-04 | Bergwerksverband Gmbh, 4300 Essen, De | |
US5085283A (en) * | 1990-09-07 | 1992-02-04 | Seabourn Ed O | Method and tool string for curving a vertical borehole horizontally |
US6860320B2 (en) * | 1995-09-12 | 2005-03-01 | Enlink Geoenergy Services, Inc. | Bottom member and heat loops |
US6250371B1 (en) | 1995-09-12 | 2001-06-26 | Enlink Geoenergy Services, Inc. | Energy transfer systems |
US6585036B2 (en) | 1995-09-12 | 2003-07-01 | Enlink Geoenergy Services, Inc. | Energy systems |
US7017650B2 (en) * | 1995-09-12 | 2006-03-28 | Enlink Geoenergy Services, Inc. | Earth loop energy systems |
US5590715A (en) * | 1995-09-12 | 1997-01-07 | Amerman; Thomas R. | Underground heat exchange system |
US6276438B1 (en) | 1995-09-12 | 2001-08-21 | Thomas R. Amerman | Energy systems |
US6672371B1 (en) | 1995-09-12 | 2004-01-06 | Enlink Geoenergy Services, Inc. | Earth heat exchange system |
US6041862A (en) * | 1995-09-12 | 2000-03-28 | Amerman; Thomas R. | Ground heat exchange system |
US6955219B2 (en) * | 2003-07-03 | 2005-10-18 | Enlink Geoenergy Services, Inc. | Earth loop installation with sonic drilling |
US7418128B2 (en) * | 2003-07-31 | 2008-08-26 | Microsoft Corporation | Elastic distortions for automatic generation of labeled data |
CN101456174B (zh) * | 2007-12-14 | 2013-01-09 | 鸿富锦精密工业(深圳)有限公司 | 电动起子 |
EP2314330A1 (de) * | 2009-10-23 | 2011-04-27 | ECP Entwicklungsgesellschaft mbH | Flexible Wellenanordnung |
CN105089525B (zh) * | 2015-09-11 | 2017-08-08 | 重庆大学 | 煤矿井下瓦斯抽采钻孔的洗孔装置 |
CN105134112B (zh) * | 2015-09-11 | 2017-08-22 | 重庆大学 | 煤矿井下瓦斯抽采钻孔的洗孔方法 |
CN105525900B (zh) * | 2015-09-11 | 2017-08-22 | 重庆大学 | 煤矿井下煤层树状钻孔复合压裂均匀增透装备 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2644669A (en) * | 1950-01-20 | 1953-07-07 | Joy Mfg Co | Mobile drilling apparatus |
DE1002263B (de) * | 1955-02-24 | 1957-02-14 | Nuesse & Graefer Kommandit Ges | Rueckholeinrichtung fuer Bohrstangenfuehrungen an Bohrmaschinen |
US2906499A (en) * | 1956-04-23 | 1959-09-29 | Marion M Travis | Directional drilling apparatus |
FR1417966A (fr) * | 1961-12-29 | 1965-11-19 | Inst Francais Du Petrole | Tube flexible |
SU590457A1 (ru) * | 1974-06-04 | 1978-01-30 | Сибирский Государственный Проектно-Конструкторский И Экспериментальный Институт Горного Машиностроения | Крепь сопр жени подэтажного штрека |
US4057115A (en) * | 1976-05-07 | 1977-11-08 | The United States Of America As Represented By The Secretary Of The Interior | Flexible shaft for a roof drill |
US4205926A (en) * | 1977-08-15 | 1980-06-03 | Carlson Drexel T | Sucker rod and coupling therefor |
DE3247921A1 (de) * | 1982-12-24 | 1984-07-26 | Klünder, Horst, 6382 Friedrichsdorf | Vorrichtung zum einbringen von bohrloechern in die seitenwaende von unterirdischen abbauraeumen geringer breite |
DE3322427C2 (de) * | 1983-06-22 | 1985-06-13 | Klöckner-Becorit GmbH, 4620 Castrop-Rauxel | Bohreinrichtung, insbesondere zur Verwendung im untertägigen Grubenbetrieb |
-
1986
- 1986-08-29 DE DE19863629366 patent/DE3629366A1/de not_active Withdrawn
-
1987
- 1987-08-27 US US07/192,508 patent/US4905777A/en not_active Expired - Fee Related
- 1987-08-27 DE DE8787905613T patent/DE3776890D1/de not_active Expired - Lifetime
- 1987-08-27 WO PCT/EP1987/000488 patent/WO1988001677A1/de active IP Right Grant
- 1987-08-27 EP EP19870905613 patent/EP0280705B1/de not_active Expired - Lifetime
- 1987-08-27 AT AT87905613T patent/ATE72875T1/de active
Non-Patent Citations (1)
Title |
---|
See references of WO8801677A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE3776890D1 (de) | 1992-04-02 |
ATE72875T1 (de) | 1992-03-15 |
DE3629366A1 (de) | 1988-03-03 |
EP0280705B1 (de) | 1992-02-26 |
WO1988001677A1 (en) | 1988-03-10 |
US4905777A (en) | 1990-03-06 |
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