EP1382794A1 - Abgestuftes rohr und bohrmaschine - Google Patents

Abgestuftes rohr und bohrmaschine Download PDF

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Publication number
EP1382794A1
EP1382794A1 EP02720600A EP02720600A EP1382794A1 EP 1382794 A1 EP1382794 A1 EP 1382794A1 EP 02720600 A EP02720600 A EP 02720600A EP 02720600 A EP02720600 A EP 02720600A EP 1382794 A1 EP1382794 A1 EP 1382794A1
Authority
EP
European Patent Office
Prior art keywords
rod
drill
step tube
diameter
tube rod
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.)
Withdrawn
Application number
EP02720600A
Other languages
English (en)
French (fr)
Other versions
EP1382794A4 (de
Inventor
Tsutomu Kaneko
Toshio Matsuda
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.)
Furukawa Co Ltd
Original Assignee
Furukawa Co Ltd
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 Furukawa Co Ltd filed Critical Furukawa Co Ltd
Publication of EP1382794A1 publication Critical patent/EP1382794A1/de
Publication of EP1382794A4 publication Critical patent/EP1382794A4/de
Withdrawn legal-status Critical Current

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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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/042—Threaded
    • E21B17/0426—Threaded with a threaded cylindrical portion, e.g. for percussion rods
    • 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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/24—Guiding or centralising devices for drilling rods or pipes

Definitions

  • the present invention relates to a step tube rod and a boring machine using the step tube rod as a drill rod.
  • a boring machine such as a hydraulic crawler drill and a fan cut drill is provided with a rock drill mounted on a. guide shell.
  • a drill rod is insertedly mounted in the rock drill, and a bit is installed at the tip end of the drill rod. Thereby, a blow and rotation are transmitted from the rock drill to the bit via the drill rod, and the rock drill is fed, whereby a rock-bed is bored.
  • a boom 14 is provided on a carriage 13 provided with a track frame 12 so as to be turnable and tiltable.
  • a guide shell 16 mounted with a rock drill 15 so as to be capable of tilting and swinging.
  • the rock drill 15 is insertedly mounted with a drill rod 1 connected by a sleeve 2, and at the tip end of the drill rod 1 is installed a bit 3 having an outside diameter approximately equal to a bore diameter Dh.
  • the rock drill 15 has a blowing mechanism, a rotating mechanism, and a flushing mechanism (not shown).
  • the rock drill 15 is moved longitudinally by a feed force given by a feed motor 17 provided on the guide shell 16, and transmits a blow and rotation to the bit 3 via the drill rod 1, whereby a rock-bed R is bored.
  • the flushing mechanism supplies compressed air to the tip end of the drill rod 1 to discharge cuttings.
  • a hood 18 is provided to cover the bore and to collect cuttings.
  • a plurality of drill rods 1 are connected successively at the time of boring work.
  • the supply and connection of the drill rods 1 and the separation and recovery of the drill rods 1 after the boring work is finished are carried out mechanically by using a rod changer 19.
  • the drill rod 1 In the case where the connection and recovery of the drill rod 1 are carried out, the drill rod 1 must be clamped so that the central axis of the drill rod 1 is fixed when the drill rod 1 is connected or separated, so that a rod clamping device 4 is provided in the vicinity of the tip end portion of the guide shell 16.
  • the general drill rod 1 used for the above-described hydraulic crawler drill 11 has a hexagonal or circular external shape and has a predetermined size of 51 mm, 45 mm, 38 mm, etc. in outside diameter according to the size of connecting screw (T51 screw, T45 screw, T38 screw, etc.). This outside diameter is considerably smaller than the bore diameter Dh.
  • the drill rod 1 is available in two types: an MM rod 1A provided with external threads MS at both ends as shown in Figure 9(a), and an MF rod 1B which is provided with external threads MS at one end and the other end of which has a larger diameter and is provided with internal threads FS on the inside as shown in Figure 9(b).
  • an MM rod 1A provided with external threads MS at both ends as shown in Figure 9(a)
  • an MF rod 1B which is provided with external threads MS at one end and the other end of which has a larger diameter and is provided with internal threads FS on the inside as shown in Figure 9(b).
  • the MM rod 1A When the MM rod 1A is used, it is connected via a sleeve 2, and when the MF rod 1B is used, the external threads MS and the internal threads FS are engaged directly with each other.
  • the rod clamping device 4 is constructed so that the drill rod 1 having a particular diameter is clamped by a pair of clamps 5 pivotally supported by pins 6 so as to be capable of being opened and closed.
  • a large-diameter portion 5L and a small-diameter portion 5S are formed on the internal surface of the clamp 5.
  • the large-diameter portion 5L holds a portion of the sleeve 2
  • the large-diameter portion 5L holds an internally threaded portion 1BL having a larger diameter.
  • This rod clamping device 4 not only clamps the sleeve 2 so as to prevent the rotation of the sleeve 2, but also easily positions the drill rod 1 by a diameter difference between the large-diameter portion 5L and the small-diameter portion 5S of the clamp 5.
  • a tube rod 1C as shown in Figure 9 (c) has been devised and used.
  • This tube rod 1C is provided with external threads MS at one end and internal threads FS at the other end, and has a larger outside diameter than the MM rod 1A and the MF rod 1B, and the outside diameter of the tube rod 1C is approximately equal to the bore diameter. Therefore, a bore bend at the time when a long hole is bored is reduced, and the cuttings discharge efficiency can be improved.
  • a rod clamping device 40 as shown in Figures 12 and 13 is provided for the fan cut drill, and a double clamp type rod clamping device 50 as shown in Figures 14 and 15 is provided for the down-the-hole drill.
  • the rod clamping device 40 shown in Figures 12 and 13 is constructed so that the drill rod 1 having a particular diameter is clamped by a pair of clamps 45 pivotally supported by pins 46 so as to be capable of being opened and closed.
  • the inside diameter of the clamp 45 is constant, and there is formed no diameter difference.
  • the rod clamping device 50 shown in Figures 14 and 15 is constructed so that clamps 55 are opened and closed by right and left clamping cylinders 56, by which the drill rod 1 having a particular diameter is clamped.
  • the inside diameter of the clamp 55 is constant, and there is formed no diameter difference.
  • the tube rod 1C is used as the drill rod 1 to reduce a bore bend, since a rod clamping device of a type such that the clamp 45, 55 has no diameter difference as in the rod clamping device 40 shown in Figure 12 and the rod clamping device 50 shown in Figure 14 is used, the positioning of the drill rod 1 is unstable, so that the work time increases significantly, and also danger in the connection and recovery work for drill rod increases.
  • the present invention has been made to solve the above problems with a boring machine, and accordingly an object thereof is to provide a step tube rod which can reduce a bore bend and in which the conventional rod clamping device and rod changer can be used as they are, and the positioning of drill rod is easy to perform, so that connection and recovery work can be performed efficiently and safely, and a boring machine using this step tube rod.
  • a step tube rod in accordance with the present invention is constructed so that in a drill rod for a boring machine, a rod outside diameter is large so as to be approximately equal to a bore diameter, external threads are provided at one end and internal threads are provided at the other end, and at least one small-diameter portion is formed near an internally threaded portion.
  • the step tube rod may also be constructed so that a rod outside diameter is large so as to be approximately equal to a bore diameter, external threads are provided at both ends so that the rods are connected via a sleeve, and at least one small-diameter portion is formed near an externally threaded portion.
  • the above-described step tube rod can reduce a bore bend at the time of boring because the outside diameter thereof is large so as to be approximately equal to the bore diameter.
  • the small-diameter portion is formed near the internally threaded portion for the step tube rod provided with the external threads at one end and the internal threads at the other end or near the externally threaded portion for the step tube rod provided with the external threads at both ends and connected via the sleeve. Therefore, for the boring machine, the step tube rod can be used as a drill rod merely by slightly modifying the conventional rod clamping device.
  • the drill rod can be positioned easily, so that the connection and recovery work can be performed efficiently and safely.
  • Feigned striking for loosening a screw of the connected step tube rod is performed after the completion of boring. However, when screw loosening is insufficient, feigned striking is performed in a state in which the step tube rod is fixed to the rod clamping device.
  • the small-diameter portion has an outside diameter which is 90% or less of the rod outside diameter and has a length which is 50% or more of the rod outside diameter.
  • the small-diameter portion has an outside diameter which is 90% or less of the sleeve outside diameter and has a length which is 50% or more of the sleeve outside diameter.
  • the step tube rod may be used only for the tip-end drill rod. Even in the case where the step tube rod is used only for the tip-end drill rod, a bore bend at the time of boring can be reduced as compared with the case where the conventional drill rod is used.
  • Figure 1 is a side view of a hydraulic crawler drill using a step tube rod in accordance with the present invention as a drill rod
  • Figure 2 is a construction view of a step tube rod in accordance with one embodiment of the present invention
  • Figure 3 is an explanatory view showing a state in which the step tube rod is guided by a rod guide
  • Figure 4 is an explanatory view showing a state in which the step tube rod is clamped by a rod clamping device.
  • a boom 14 is provided on a carriage 13 provided with a track frame 12 so as to be turnable and tiltable.
  • a guide shell 16 mounted with a rock drill 15 so as to be capable of tilting and swinging.
  • the rock drill 15 is insertedly mounted with a connected step tube rod 7 as a drill rod, and at the tip end of the step tube rod 7 is installed a bit 3 having an outside diameter approximately equal to a bore diameter Dh.
  • the rock drill 15 has a blowing mechanism, a rotating mechanism, and a flushing mechanism (not shown).
  • the rock drill 15 is moved longitudinally by a feed force given by a feed motor 17 provided on the guide shell 16, and transmits a blow and rotation to the bit 3 via the step tube rod 7, whereby a rock-bed R is bored.
  • the flushing mechanism supplies compressed air to the tip end of the step tube rod 7 to discharge cuttings.
  • a hood 18 is provided to cover the bore and to collect cuttings.
  • a plurality of step tube rods 7 are connected successively at the time of boring work.
  • the supply and connection of the step tube rods 7 and the separation and recovery of the step tube rods 7 after the boringwork is finished are carriedoutmechanically by using a rod changer 19.
  • the step tube rod 7 In the case where the connection and recovery of the step tube rod 7 are carried out, the step tube rod 7 must be clamped so that the central axis of the step tube rod 7 is fixed when the step tube rod 7 is connected or separated, so that a rod clamping device 4 is provided in the vicinity of the tip end portion of the guide shell 16.
  • a rod guide 9 which holds the step tube rod 7 in the center to guide it when clamping by the rod clamping device 4 is released and boring is performed.
  • the step tube rod 7 has a large rod outside diameter D that is approximately equal to the bore diameter Dh, and is provided with external threads MS at one end and internal threads FS at the other end.
  • the step tube rods 7 are connected by directly engaging the external threads MS with the internal threads FS.
  • a small-diameter portion 8 is formed near an internally threaded portion.
  • the small-diameter portion 8 is formed so that the outside diameter d thereof is 90% or less of the rod outside diameter D and the length L thereof is 50% or more of the rod outside diameter D, that is, d ⁇ 0.9D, and L ⁇ 0.5D.
  • the step tube rod 7 is guided by the rod guide 9 and is held in the center of the guide shell 16.
  • the step tube rod 7 is clamped by the rod clamping device 4 provided on the guide shell 16 of the hydraulic crawler drill 10.
  • the rod clamping device 4 is provided with a pair of clamps 5 pivotally supported by pins 6 so as to be capable of being opened and closed.
  • a large-diameter portion 5L and a small-diameter portion 5S are formed, and the large-diameter portion 5L holds the internally threaded portion of the step tube rod 7.
  • the step tube rod 7 is clamped by the rod clamping device 4 so as to be prevented from rotating, and is positioned by a diameter difference between the large-diameter portion 5L and the small-diameter portion 5S of the clamp 5.
  • step tube rod 7 Since the step tube rod 7 has the large outside diameter D approximately equal to the bore diameter Dh, a bore bend occurring at the time of boring is reduced. Also, since the small-diameter portion 8 is formed at the outer periphery near the internally threaded portion, for the hydraulic crawler drill 10, the step tube rod 7 can be used as a drill rod merely by slightly modifying the conventional rod clamping device.
  • the step tube rod 7 can be positioned easily, so that the connection and recovery work can be performed efficiently and safely.
  • the outside diameter d of the small-diameter portion 8 is 90% or less of the rod outside diameter D and the length L thereof is 50% or more of the rod outside diameter D, when screw loosening is insufficient, feigned striking can be performed without trouble in a state in which the step tube rod 7 is fixed to the rod clamping device 4.
  • Figure 5 is a construction view of a step tube rod in accordance with another embodiment of the present invention
  • Figure 6 is an explanatory view showing a state in which the step tube rod is clamped by a rod clamping device.
  • This step tube rod 7 has a large rod outside diameter D that is approximately equal to the bore diameter Dh, and is provided with external threads MS at both ends.
  • the step tube rods 7 are connected via a sleeve 2 provided with internal threads FS on the inside.
  • the outside diameter Ds of the sleeve 2 is equal to the rod outside diameter D.
  • a small-diameter portion 8 is formed near an externally threaded portion.
  • the small-diameter portion 8 is formed so that the outside diameter d thereof is 90% or less of the sleeve outside diameter Ds and the length L thereof is 50% or more of the sleeve outside diameter Ds, that is, d ⁇ 0.9Ds, and L ⁇ 0.5Ds.
  • the step tube rod 7 can be formed into shapes shown in Figures 7(a) and 7(b).
  • the step tube rod 7 is clamped by a rod clamping device 4 provided on a guide shell 16 of the hydraulic crawler drill 10.
  • the rod clamping device 4 is providedwith a pair of clamps 5 pivotally supported by pins 6 so as to be capable of being opened and closed.
  • a large-diameter portion 5L and a small-diameter portion 5S are formed, and the large-diameter portion 5L holds a portion of the sleeve 2.
  • the step tube rod 7 and the sleeve 2 are clamped by the rod clamping device 4 so as to be prevented from rotating, and are positioned by a diameter difference between the large-diameter portion 5L and the small-diameter portion 5S of the clamp 5.
  • step tube rod 7 Since the step tube rod 7 has the large outside diameter D approximately equal to the bore diameter Dh, a bore bend occurring at the time of boring is reduced. Also, since the small-diameter portion 8 is formed near an externally threaded portion, for the hydraulic crawler drill 10, the step tube rod 7 can be used as a drill rod merely by slightly modifying the conventional rod clamping device.
  • the step tube rod 7 can be positioned easily, so that the connection and recovery work can be performed efficiently and safely.
  • the outsidediameterdof the small-diameterportion 8 is 90% or less of the sleeve outside diameter Ds and the length L thereof is 50% or more of the sleeve outside diameter Ds, when screw loosening is insufficient, feigned striking can be performed without trouble in a state in which the step tube rod 7 is fixed to the rod clamping device 4.
  • the step tube rod 7 may be used only for the tip-end drill rod. Even in the case where the step tube rod 7 is used only for the tip-end drill rod, a bore bend at the time of boring can be reduced as compared with the case where the conventional drill rod 1 is used.
  • the step tube rod in accordance with the present invention a bore bend at the time of boring can be reduced. Also, the small-diameter portion is formed near the internally threaded portion for the step tube rod provided with the external threads at one end and the internal threads at the other end or near the externally threaded portion for the step tube rod provided with the external threads at both ends and connected via the sleeve. Therefore, for this boring machine, the step tube rod can be used as a drill rod merely by slightly modifying the conventional rod clamping device.
  • the drill rod can be positioned easily, so that the connection and recovery work can be performed efficiently and safely.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
EP02720600A 2001-04-26 2002-04-25 Abgestuftes rohr und bohrmaschine Withdrawn EP1382794A4 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP2001130084 2001-04-26
JP2001130085 2001-04-26
JP2001130085 2001-04-26
JP2001130084 2001-04-26
PCT/JP2002/004149 WO2002088511A1 (fr) 2001-04-26 2002-04-25 Tige tubulaire a etages et machine de forage

Publications (2)

Publication Number Publication Date
EP1382794A1 true EP1382794A1 (de) 2004-01-21
EP1382794A4 EP1382794A4 (de) 2005-07-20

Family

ID=26614309

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02720600A Withdrawn EP1382794A4 (de) 2001-04-26 2002-04-25 Abgestuftes rohr und bohrmaschine

Country Status (7)

Country Link
US (1) US20030132035A1 (de)
EP (1) EP1382794A4 (de)
JP (1) JPWO2002088511A1 (de)
KR (1) KR20040002377A (de)
CN (1) CN1460145A (de)
CA (1) CA2411253A1 (de)
WO (1) WO2002088511A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102619478B (zh) * 2012-04-18 2014-09-03 江苏省无锡探矿机械总厂有限公司 钳式提引机构
PL2868860T3 (pl) * 2013-09-09 2016-06-30 Sandvik Intellectual Property Komponent przewodu wiertniczego
CN104018811B (zh) * 2014-05-27 2016-07-06 鞍钢集团矿业公司 一种垂直孔钻机钻孔作业导渣成型装置及导渣成型方法
CN110424899B (zh) * 2019-09-02 2024-05-10 三门峡丽源环保工程设备有限公司 一种伸缩钻杆及用于该伸缩钻杆的清洗装置
CN116122747B (zh) * 2023-02-10 2023-09-05 广东有色工程勘察设计院 一种钻井装置及其钻井方法
CN117127912B (zh) * 2023-10-23 2024-01-26 烟台兴业机械股份有限公司 一种凿岩台车

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1895901A (en) * 1932-04-09 1933-01-31 Raymond Concrete Pile Co Kelly bar
US4076436A (en) * 1975-01-06 1978-02-28 Bowen Tools, Inc. Stress relieved tool elements
WO1993000500A2 (en) * 1991-06-25 1993-01-07 Shaw Industries Ltd. Variable depth grooved drill string member
US5950739A (en) * 1997-09-05 1999-09-14 Lafontaine; Stephen J. Earth piercing apparatus

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2051998A (en) * 1935-05-08 1936-08-25 Monroe Verne Drive clamp
US2969845A (en) * 1959-01-23 1961-01-31 Dewey S Hester Drill pipe saving device
US3080179A (en) * 1959-10-06 1963-03-05 Huntsinger Associates Slip engaging portion of drill string formed of increased wall thickness and reduced hardness
BE757087A (fr) * 1969-12-03 1971-04-06 Gardner Denver Co Mecanisme de devissage de tiges de forage commande a distance
SE341169B (de) * 1970-06-15 1971-12-20 Atlas Copco Ab
US3730286A (en) * 1972-06-29 1973-05-01 Exxon Production Research Co Apparatus for improving rotary drilling operations
US4030542A (en) * 1975-10-02 1977-06-21 Ingersoll-Rand Company Drill string make-up and break-out mechanism
US4128135A (en) * 1977-07-13 1978-12-05 Gardner-Denver Company Drill pipe handling mechanism
US4416476A (en) * 1980-09-17 1983-11-22 Oncor Corporation Intermediate weight drill stem member
US4460202A (en) * 1980-11-26 1984-07-17 Chance Glenn G Intermediate weight drill string member
JPS6036489U (ja) * 1983-08-15 1985-03-13 大同特殊鋼株式会社 さく岩機用中間ロツド
US4771811A (en) * 1984-04-20 1988-09-20 Lor, Inc. Heavy wall drill pipe and method of manufacture of heavy wall drill pipe
US4760889A (en) * 1986-09-19 1988-08-02 Dudman Roy L High bending strength ratio drill string components
US4811800A (en) * 1987-10-22 1989-03-14 Homco International Inc. Flexible drill string member especially for use in directional drilling
US4987961A (en) * 1990-01-04 1991-01-29 Mcneely Jr Branch M Drill stem arrangement and method
US5040622A (en) * 1990-05-16 1991-08-20 Shaw Industries Ltd. Variable depth grooved drill string member
DE4127249C1 (de) * 1991-08-17 1993-02-04 Gd-Anker Gmbh, 3370 Seesen, De
JPH082223Y2 (ja) * 1992-06-04 1996-01-24 株式会社樋口技工 穿孔装置のカップリング
US5653297A (en) * 1995-04-14 1997-08-05 Harnischfeger Corporation Blasthole drill with improved automatic breakout wrench
US5762150A (en) * 1996-09-06 1998-06-09 Ingersoll-Rand Company Drill rod changer assembly
US6012744A (en) * 1998-05-01 2000-01-11 Grant Prideco, Inc. Heavy weight drill pipe
SE0003916L (sv) * 2000-10-27 2002-02-19 Sandvik Ab Styrrör för mekanisk hantering i en rigg för bergborrning samt borrsträng för mekanisk hantering

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1895901A (en) * 1932-04-09 1933-01-31 Raymond Concrete Pile Co Kelly bar
US4076436A (en) * 1975-01-06 1978-02-28 Bowen Tools, Inc. Stress relieved tool elements
WO1993000500A2 (en) * 1991-06-25 1993-01-07 Shaw Industries Ltd. Variable depth grooved drill string member
US5950739A (en) * 1997-09-05 1999-09-14 Lafontaine; Stephen J. Earth piercing apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO02088511A1 *

Also Published As

Publication number Publication date
WO2002088511A1 (fr) 2002-11-07
JPWO2002088511A1 (ja) 2004-08-19
US20030132035A1 (en) 2003-07-17
KR20040002377A (ko) 2004-01-07
EP1382794A4 (de) 2005-07-20
CA2411253A1 (en) 2002-10-28
CN1460145A (zh) 2003-12-03

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