WO2021110996A1 - Vorrichtung zum abteufen einer vertikalen bohrung - Google Patents
Vorrichtung zum abteufen einer vertikalen bohrung Download PDFInfo
- Publication number
- WO2021110996A1 WO2021110996A1 PCT/EP2020/084777 EP2020084777W WO2021110996A1 WO 2021110996 A1 WO2021110996 A1 WO 2021110996A1 EP 2020084777 W EP2020084777 W EP 2020084777W WO 2021110996 A1 WO2021110996 A1 WO 2021110996A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- drive
- borehole
- excavation tool
- bore
- elements
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D1/00—Sinking shafts
- E21D1/03—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws
- E21D1/06—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws with shaft-boring cutters
Definitions
- the invention relates to a device for sinking a vertical borehole, in particular a shaft, an extraction borehole in a deposit body, or a foundation borehole in the ground.
- groundwater-bearing layers are problematic.
- the mountains have to be frozen or the water table has to be lowered. If this is not possible, drilling must be carried out underwater, which means that the boreholes cannot be walked on. This is particularly problematic with larger diameters and large bore lengths.
- the drilling device directly transports the rock containing the valuable mineral if possible.
- a drilling pattern can be followed, so that the drilled holes are then expired again in order to achieve the lowest possible loss of the deposit body.
- a conveying facility for vertically moving the drilling device on the borehole is provided on the surface. Furthermore, it is known, among other things, from the prior art that a top drive is provided which drives the drill head itself via a rod. The loosened soil is then transported to the surface through the drive rods, for example by means of an air lifting process, together with the liquid in the borehole, and processed accordingly.
- the object of the invention is to provide a device with which vertical bores with large diameters can also be carried out under water without operating personnel.
- the boreholes can be shafts, extraction boreholes in deposits or foundation boreholes.
- the diameters are more than 4 m. Aspects that must be taken into account here are the vertical movement of the drilling device in the borehole, the drive of the drilling tool, the conveyance of the loosened soil and the connection to the surface between the drilling tool and the surface existing installations.
- the invention provides a drilling device according to the solution of claim 1. Further explanations are given in the subclaims.
- a device for sinking a vertical borehole, in particular a shaft, an extraction borehole in a deposit body, or a foundation borehole in the ground, with at least one excavation tool for mining material at the bottom of the borehole, with one with at least one in the effective area of the at least a mining tool arranged conveying means for conveying material excavated on the sole out of the bore, with a machine frame on which at least two bracing elements for locking the device in the bore during drilling are arranged, with at least one means for vertical raising and lowering of the drilling device in the bore and with at least one drive for rotating the excavation tool.
- the means for vertically raising and lowering the drilling device in the bore is a strand lifting system with at least one lifting unit with at least one cylinder and at least one strand above a bundle of strands per lifting unit, which is connected to Machine frame is connected. It is advantageous that the lifting unit has at least one strand lock.
- Another teaching of the invention provides that at least one fastening per strand / strand bundle is provided on the machine frame. This creates a possibility in a simple and inexpensive manner that does not require a headframe and cost-intensive winches.
- the bore is filled with a liquid, preferably water or a bentonite suspension.
- the at least one conveying means for conveying away material degraded on the sole out of the bore has a vertical conveying line which preferably extends through the machine frame.
- the delivery line does not rotate.
- compressed air can be introduced into the delivery line at at least one delivery point.
- Another teaching of the invention provides that the removal takes place in the reverse circulation process. This enables funding in a simple manner.
- the delivery line is constructed from pipe sections so that the delivery line can be successively lengthened or shortened. It is advantageous that at least one pipe section has at least one flange element to be connected to a further pipe section. It is furthermore advantageous that at least one pipe section has at least one guide element, the at least one guide element guiding an element of a drive train, and the guide element preferably having at least one bearing element. Another teaching of the invention provides that at least one pipe section has at least one guide element for a supply line. This makes it possible to convey the loosened soil without the conveying line rotating and / or having to serve to transmit forces.
- bracing elements arranged vertically one above the other are provided for locking the device in the bore. This allows optimal bracing for load transfer. Furthermore, it is also possible to effect guidance in the bore with the upper and / or lower bracing elements. Control is also possible via the bracing elements of the drilling device. Furthermore, it is advantageous that the bracing elements act as a stop for feed elements / feed cylinders for the excavation tool.
- the excavation tool is a cutting wheel, preferably in full cut, which particularly preferably has extendable and retractable edge cutting tools, and / or that particularly preferably disks or chisels are provided.
- the excavation tool is designed to be movable in the excavation direction with respect to the machine frame.
- at least one feed system preferably a cylinder, is provided which presses the excavation tool to loosen rock against the bottom of the bore in order to generate the necessary loosening pressure.
- the feed system preferably acts on at least one of the bracing elements.
- the excavation tool has a suction chamber for loosened rock. This allows safe and simple suction of the cuttings / loosened soil.
- the at least one drive has a drive unit above ground which is connected to a drive element of the excavation tool. This is advantageous because a simple power transmission can take place on the excavation tool. It is advantageous that the connection takes place via a gear, preferably a reduction gear.
- a central gear is provided on the drill head, which is connected to the gear. This gear arrangement is advantageously stored in oil and has a pressure equalization mechanism.
- the drive unit is connected to the drive element of the excavation tool via at least one, preferably telescopic, drive train.
- the drive train is composed of individual rods or tubular elements.
- the individual rods or tubular elements are releasably connected to one another via connecting elements such as threads or couplings, preferably claw couplings.
- rods / pipe elements are guided on the pipe sections, preferably via guide elements that are provided on the pipe sections, particularly preferably in bearing elements.
- At least one rod can be telescoped in order to enable the drilling stroke of the excavation tool.
- the drive has at least one gear unit with which the necessary speed of the excavation tool can be provided.
- the at least one drive is a hydraulic or electric drive or a combination thereof.
- the drive is arranged on the machine.
- the drive is arranged on the machine in an air-filled space.
- the space has an opening downwards towards the sole, from which air can escape from the space, and the air can be supplied to the space with excess pressure from above ground.
- Figure 1 is a schematic side view of a device according to the invention
- Figure 2 is a view similar to Figure 1 with additions
- Figure 3 is a three-dimensional schematic representation of a first embodiment of the drilling part of the device according to the invention
- Figure 4a-4c a three-dimensional schematic representation of a second embodiment of the drilling part of the device according to the invention
- FIG. 5 shows a first enlarged detail view of FIG. 1
- FIG. 6 shows a second enlarged detail view of FIG. 1
- FIG. 7a shows a three-dimensional schematic view of a pipe section according to the invention
- FIG. 7b shows an enlarged detail view of FIG. 7
- FIGS. 8a-8c shows a schematic view of a drilling sequence according to the invention
- FIGS. 9a-9f show a schematic view of a start sequence for the invention
- FIG. 1 shows a drilling device 10 according to the invention.
- the drilling device 10 is arranged in and on a borehole 100 that is filled with a liquid 110, for example water or a bentonite suspension.
- the borehole 100 has an opening 120 on its upper side, which is covered with a cover 24 when in operation.
- a foundation 34 is provided around the opening 120.
- a strand lifting system 11 is provided on the foundation 34, which is provided for introducing forces into the ground 130.
- the last lifting system 11 comprises a winch 11A and a lifting cylinder arrangement 11 B.
- the strand hoisting system 11 comprises a strand or strand arrangement 16.
- the strands 16 are connected to a machine frame 13 of the drilling device 10 via stops 16A.
- the machine frame 13 is provided with a lower bracing element 14 and an upper bracing element 15.
- the bracing elements 14, 15 each have at least one feed cylinder 18A in order to move the movable parts 14A, 15A of the bracing elements 14, 15 against the borehole wall 140, to release them therefrom, and to brace them against the borehole wall 140.
- the bracing elements 14, 15 have a plurality of movable elements 14A, 15A which are arranged circumferentially around the machine frame 13.
- the movable elements 14A, 15A can be moved between a retracted position and a clamped position via the feed cylinder 18A.
- the drilling device 10 has a cutting wheel 21 that is equipped with individual drilling tools 21A, such as, for example, disks or chisels. Furthermore, the cutting wheel 21 has edge cutting tools 22 which can be extended and retracted in order, for example, to precisely profile the borehole wall 41 or, if necessary, to be able to effect a change in direction or an undercut. Furthermore, the cutting wheel 21 is provided with a suction box 20 for receiving loosened soil / cuttings 160.
- soil is understood to mean any form of loose or solid rock or valuable mineral of a deposit. Cuttings and loosened soil are used synonymously.
- the suction box 20 is part of the conveying means of the drilling device 10.
- the cutting wheel 21 is rotatable and can be moved back and forth with respect to the machine frame 13 via a telescopic arrangement 17. Furthermore, the cutting wheel 21 can be driven by a main drive 12, which in the embodiment shown is arranged above ground in a top box 29, and thereby set in rotation.
- the drive can also be provided, for example hydraulically or electrically, in the borehole 100, for example permanently on the machine frame 13.
- a Machine frame 13 an enclosed space, not shown, can be provided in which the electric and / or hydraulic drive is provided and which is connected from this to the cutting wheel 21 in order to set it in rotation.
- this space is designed to be open at the bottom and is kept free of liquid with regard to water / bentonite suspension 110 by means of compressed air.
- a central drive 19 also referred to as bullgear or revolving central gear, is arranged on the cutting wheel 21. This is shown in Figure 5 and will be explained in more detail below.
- the telescopic arrangement 17 is connected to a feed cylinder 18 which is arranged diagonally here, for example, and which is provided with its other end on the movable element 14A of the lower bracing elements 14.
- a feed cylinder 18 which is arranged diagonally here, for example, and which is provided with its other end on the movable element 14A of the lower bracing elements 14.
- the cutting wheel 21 can be pressed against the base 150 of the borehole 100 via the feed cylinder 18, so that this creates sufficient contact pressure on the base 150 that the disks 21A of the cutting wheel 21 break the pending Loosen the soil / the surrounding rock.
- the central drive 19 has a pressure compensation device 23, which is shown in Figure 6 and is explained below.
- the conveying means of the drilling device 10 comprises a conveying capacity 25 which is formed from individual pipe sections 40 which are connected to one another via flanges 44.
- the conveying capacity 25 is designed here as a central line that does not transmit any rotational forces. Furthermore, the conveying capacity 25 also does not transmit any lifting forces with respect to the drilling device 10.
- the cuttings 160, together with the liquid 110 located in the borehole 100, are introduced from the bottom 150 into the suction box 20 in the direction of arrow C and from there sucked into the conveying capacity 25.
- the conveyance itself in the conveying capacity 25 is carried out by a compressed air supply in the direction of arrow E, which is introduced into the conveying capacity 25 via a compressed air line 37 as part of the supply lines 26 in the upper part, whereby the density of the liquid 110 is reduced, so that a movement in the conveying line 25 upwards.
- the mixture of cuttings 160 and liquid 110 is challenged in the delivery capacity 25 in the direction of arrow D from the borehole. This causes suction into the suction box 20 in the direction of arrow C.
- a deflection pipe 27 is provided, with which the conveyed mixture is fed to the preparation 32 via a pipeline 35.
- the cuttings 160 are separated from the liquid 110.
- the liquid 110 (water or bento with suspension) is then fed back to the borehole 100 in the direction of arrow A via a feed line 36.
- the deflecting tube 27 is preferably part of the top box 29.
- FIGS 3 and 4a to 4c show different arrangements with regard to the bracing elements 14, 15 of the device according to the invention in different ways
- the main drive 12 is connected to the central drive 19 of the cutting wheel 21 via a drive train 30.
- a telescopic drive rod 31 is provided to compensate for the feed of the cutting wheel 21 with respect to the machine frame 13 that can be introduced via the feed cylinder 18 and the telescopic arrangement 17.
- the drive train 30 itself is formed from drive rods 41 which are connected to one another via connecting elements 42, preferably shown here jaw couplings.
- the drive rods are preferably connected to the pipe sections 40 via guide elements 43.
- the guide elements 43 have bushings or bearings 45.
- the guide elements 43 are shown on the pipe sections 40 in FIGS. 7A and 7B. Furthermore, guide elements 46 with connections 47 for the supply lines 26 are provided on the pipe sections 40.
- FIG. 5 shows the central drive 19 in detail.
- a connecting element 42 of the drive train 30 engages in a gear 47, preferably a planetary gear.
- the planetary gear 47 is connected to a gear 48 that meshes with a central gear / bull gear 49.
- the central gear 49 sits on a flange 50 which is firmly connected to the cutting wheel 21.
- the central drive 19 has a housing 52 in which the central gear 49 and the gear 48 are located.
- the cavities 53 are filled with gear oil.
- the flange 50 is sealed off from the housing 52 via a seal 51.
- a pressure equalization device 23 is provided for pressure equalization.
- This comprises a housing 54 which has an opening 55 towards the borehole 100 on one side and an opening 56 on the other side which is connected to the cavity 53 of the housing 52.
- a cylinder 57 which is designed to be movable in the housing 54, is provided in the housing 54 as a separation and at the same time for pressure compensation. This makes it possible to make the seal 51 as minimal as possible. This has cost advantages.
- FIG. 8A shows the drilling device 10 with the cutting wheel 21 retracted on a first level 151 of the base 150 at the beginning of a drilling cycle.
- FIG. 8B shows the end of the drilling cycle, in which the drilling bottom 150 has been drilled to the level 152 by the cutting wheel 21.
- FIG. 8C shows the drilling device with retracted cutting wheel 21 and retracted bracing elements 14, 15, so that the drilling device 10 can be moved vertically in the borehole 100 via the strand lifting system 16. This state, which is shown in FIG. 8C, occurs when the drilling device 10 is removed from the borehole 100 or is reintroduced.
- the bracing elements 14, 15 are slightly released and the strand lifting device 11 lowers the machine tube 13 relative to the cutting wheel 21, so that the telescopic arrangement 17 retracts.
- the machine frame 13 is lowered, it is also guided through the telescopic arrangement 17.
- At least the upper bracing elements 15 can additionally guide the drilling device. If the telescopic arrangement 17 is retracted again, the drilling device 10 is finally braced again with respect to the borehole wall 140 by extending the movable elements 14A, 15A via the bracing cylinder / advancing cylinder 18A.
- FIGS. 9A to 9F show the installation cycle of the drilling device 10 according to the invention.
- the borehole 100 is prepared, for example by means of an excavator, and the foundation 34 is attached.
- a drive-on frame 33 is erected on the foundation 34.
- the fully assembled drilling device 10 is introduced into this drive-up frame 33 and the borehole 100 and filled with water / bentonite suspension 110.
- the drilling device 10 can be driven into the ground by its own weight by operating the cutting wheel 21. ( Figure 9B).
- the drive-up frame 33 is then removed and the lifting system 11 installed (FIG. 9c). At this point in time, the drilling device 10 is completely installed and can carry out the drilling.
- FIGS. 9D to 9F show the situation that the drilling device 10 has been drilled to such an extent that the conveying capacity 25 and the drive train 30 have to be lengthened.
- the top box 29 is removed with a gantry crane 28 and a new pipe section 40 is installed. This is connected via the flanges 44 to the pipe section 40 already located below it. Furthermore, the connecting elements 42 of the individual drive rods 41 interlock.
- the top box 29 (FIG. 9F) is reassembled. Then drilling can be continued.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2020396287A AU2020396287A1 (en) | 2019-12-04 | 2020-12-04 | Device for sinking a vertical borehole |
CA3160587A CA3160587A1 (en) | 2019-12-04 | 2020-12-04 | Device for sinking a vertical borehole |
EP20820855.3A EP4069942A1 (de) | 2019-12-04 | 2020-12-04 | Vorrichtung zum abteufen einer vertikalen bohrung |
CN202080092512.9A CN114945732A (zh) | 2019-12-04 | 2020-12-04 | 用于挖掘竖直的钻孔的设备 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019133088 | 2019-12-04 | ||
DE102019133088.2 | 2019-12-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2021110996A1 true WO2021110996A1 (de) | 2021-06-10 |
Family
ID=73748083
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2020/084777 WO2021110996A1 (de) | 2019-12-04 | 2020-12-04 | Vorrichtung zum abteufen einer vertikalen bohrung |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP4069942A1 (de) |
CN (1) | CN114945732A (de) |
AU (1) | AU2020396287A1 (de) |
CA (1) | CA3160587A1 (de) |
WO (1) | WO2021110996A1 (de) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0316931A2 (de) * | 1987-11-18 | 1989-05-24 | SHIMIZU CONSTRUCTION Co. LTD. | Gerät zum Schachtabteufen |
EP0741227A2 (de) * | 1995-05-01 | 1996-11-06 | Hitachi Construction Machinery Co., Ltd. | Werkzeug und Verfahren zum Bohren eines Bohrloches |
US20160130942A1 (en) * | 2013-06-25 | 2016-05-12 | Herrenknecht Aktiengesellschaft | Device for sinking a shaft and method for sinking a shaft |
KR101762879B1 (ko) * | 2017-02-21 | 2017-07-28 | 김인필 | 지반 굴착장치 |
US10202807B2 (en) * | 2014-03-21 | 2019-02-12 | China Railway Engineering Equipment Group Co., Ltd. | Vertical shaft drilling rig using novel drilling method |
-
2020
- 2020-12-04 WO PCT/EP2020/084777 patent/WO2021110996A1/de unknown
- 2020-12-04 CA CA3160587A patent/CA3160587A1/en active Pending
- 2020-12-04 EP EP20820855.3A patent/EP4069942A1/de active Pending
- 2020-12-04 CN CN202080092512.9A patent/CN114945732A/zh active Pending
- 2020-12-04 AU AU2020396287A patent/AU2020396287A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0316931A2 (de) * | 1987-11-18 | 1989-05-24 | SHIMIZU CONSTRUCTION Co. LTD. | Gerät zum Schachtabteufen |
EP0741227A2 (de) * | 1995-05-01 | 1996-11-06 | Hitachi Construction Machinery Co., Ltd. | Werkzeug und Verfahren zum Bohren eines Bohrloches |
US20160130942A1 (en) * | 2013-06-25 | 2016-05-12 | Herrenknecht Aktiengesellschaft | Device for sinking a shaft and method for sinking a shaft |
US10202807B2 (en) * | 2014-03-21 | 2019-02-12 | China Railway Engineering Equipment Group Co., Ltd. | Vertical shaft drilling rig using novel drilling method |
KR101762879B1 (ko) * | 2017-02-21 | 2017-07-28 | 김인필 | 지반 굴착장치 |
Also Published As
Publication number | Publication date |
---|---|
AU2020396287A1 (en) | 2022-06-23 |
CN114945732A (zh) | 2022-08-26 |
CA3160587A1 (en) | 2021-06-10 |
EP4069942A1 (de) | 2022-10-12 |
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