EP0216506A1 - Roof bolting method - Google Patents

Roof bolting method Download PDF

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Publication number
EP0216506A1
EP0216506A1 EP86306475A EP86306475A EP0216506A1 EP 0216506 A1 EP0216506 A1 EP 0216506A1 EP 86306475 A EP86306475 A EP 86306475A EP 86306475 A EP86306475 A EP 86306475A EP 0216506 A1 EP0216506 A1 EP 0216506A1
Authority
EP
European Patent Office
Prior art keywords
roof
bolting
automatic
mining
machine
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
Application number
EP86306475A
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German (de)
French (fr)
Other versions
EP0216506B1 (en
Inventor
Bob Andrew Kenison
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.)
Bayer CropScience Inc USA
Original Assignee
Stauffer Chemical Co
Rhone Poulenc Basic Chemicals Co
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 Stauffer Chemical Co, Rhone Poulenc Basic Chemicals Co filed Critical Stauffer Chemical Co
Publication of EP0216506A1 publication Critical patent/EP0216506A1/en
Application granted granted Critical
Publication of EP0216506B1 publication Critical patent/EP0216506B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • E21D20/006—Machines for drilling anchor holes and setting anchor bolts having magazines for storing and feeding anchoring-bolts

Definitions

  • This invention relates to an automatic roof bolter.
  • Mining seams of minerals such as trona or coal found in rela­tively deep underground formations has always caused problems of maintain­ing proper support of the roof structure or overhead rock strata after the mineral or coal has been removed from the seam.
  • Most mining machines have therefore had limited ability to mine to a relatively great depth in a seam without backing out to allow a bolter to be moved into the mined seam to place roof bolts into the overhead seam of rock (or mine roof) to pro­vide support for the roof against cave-in.
  • This problem has been overcome to some degree by various means such as attaching roof bolters to the mining machine itself and configuring the bolter apparatus such that it hydraulically places and locks into position both floor and roof jacks to prevent vibration and motion of the roof-bolting mechanism during the bolting operation.
  • a non-automatic bolter requires an operator to manually mount a drill, drill a hole, remove the drill, mount a bolt and secure the bolt.
  • An automatic bolting machine automatically conducts the above series of steps sequentially after the machine is actuated. All bolting machines normally have their own motive and power source, independent of any mining machines which they follow.
  • U.S. Patent No. 4,199,193 to Damron et al. provides for non-automatic roof bolters to be attached to floor and ceiling jacks which are hydraulically and flexibly attached to the miner. The floor and roof jacks are placed into position with the hydraulically extensible means allowing the miner to continue to move while fixedly holding the roof bolter in a position in which it can be operated.
  • a continuous mining system for extracting minerals, coal, trona or other desired material from an underground seam has been developed which has the capacity, while continuing the mining operation, of conduct­ing roof bolting operations which can be performed by either the mining machine operator or by a separate bolting machine operator without the necessity of stopping and withdrawing the miner from the minable material face being mined.
  • an automatic bolting machine containing a bolt magazine and a drill and bolt driver which can be indexed into position for the required operation of drilling or bolting is electrically or hydraulically moved into pressure contact with the roof of the mined entry at the point where a roof bolt is desired to be emplaced.
  • a drill is then indexed into position and accuated by a power unit.
  • the hole is drilled to the desired depth to accomodate the desired roof bolt.
  • the drill is withdrawn from the hole, indexed away from the drilled hole.
  • a bolt is automatically removed from the bolt magazine and placed in position in the bolter driver which is indexed into position, drives and secures the bolt into the roof. This entire operation is con­ducted without placing floor support jacks in position to stabilize the bolter.
  • the continuous miner continues to mine the minable material coal face during the bolting operation.
  • It is the primary object of this invention to provide a continu­ous mining system comprising a continuous mining machine which carries it own fixedly mounted automatic roof-bolting mechanism which can be actuated to contact the mine roof and emplace a roof bolt without the necessity of securing the roof bolter against vibration by the placement of floor jacks, in which the bolting operation can be conducted while the continu­ous miner is actively mining the minable material face.
  • the drilling and bolting operation can be conducted through hydraulic electronic or mechan­ically sequenced drilling and bolting steps by either an operator separate from the miner operator or, more preferably, by the continuous miner operator.
  • FIG. 1 illustrates a top view of a conventional type of continu­ous miner, such as a Joy 12HM9 or 12HM10 (manufactured by Joy Mahinery of Frankin, PA), which has been lenthened to allow the mounting of automatic roof-bolting equipment on the miner.
  • a continuous mining machine is a mining machine designed to remove minable material from the minable material face and to load the material into cars or converyors without the use of cutting machines, drills or explosives. It is preferred to locate the automatic bolting equipment as far forward on the miner as possible to allow roof bolting as early as possible to prevent cave-ins. It is thus particularly desirable to mount the automatic bolting equipment ahead of the operator or operators on the machine where safety regulations require.
  • the automatic bolting equipment may, if desired, be mounted at any desired space on the miner. Depending on the size, length and width of the machine, one or more automatic bolting machines are mounted on the contin­uous miner. The frequency and spacing of bolts is determined by safety requirements.
  • the automatic bolting machine mechanism 1 is fixedly mounted to the chassis of a continuous mining machine 2, which contains cutter heads 3 driven by driver mechanism 13 and a mined material discharge conveyor 4 and an adjustable conveyor tail piece 14.
  • the automatic bolting mechanism 1 is mounted to an extensible mechanism 5 by which the automatic bolting mechanism 1 is moved vertically until an anchor stud 12 comes into pres­sure contact with the mine roof 6.
  • the automatic bolting sequence is then initiated in which a drilling mechanism 7 is indexed onto position 14 and actuated to drill a hole 20 in the mine roof 6.
  • the drilling mechanism 7 is then withdrawn and indexed back to its original position.
  • a bolt is automatically removed from a bolt magazine 8 and is indexed into the bolt driver 9, the driver 9 is indexed into position 14, the bolt is pushed up into the drilled hole and tightened to lock it into position.
  • Any auto­matic bolting system may be used, such as Tamrock Robolt built by Tampella-Tamrock of Finland. These automatic bolters are well known in the industry but have previously only been attached to boom arms extending from the bolting mechanism's own motive and power source separate from a mining machine.
  • the automatic bolter 1 is raised by extensible mechanism 5 which can be driven by conventional means such as hydraulic or electric motors.
  • extensible mechanism 5 can be driven by conventional means such as hydraulic or electric motors.
  • the drilling mechanism 7 and the bolt driver 9 can also be driven by hydraulic or electric motors.
  • the cutter heads on the continuous miner are conventional heads such as drum, fixed and ossillating heads and contact the mine face 19 to remove minable material.
  • the miner may carry a stabilization jack 15 to stabilize the miner during mining opera­tions.
  • the miner controls 16 and the automatic bolter controls 17 are shown in FIG. 1 where the miner operator can operate both the miner and the automatic bolter.
  • An alternate embodiment would place the automatic bolter controls in area 18 to be operated by an operator other than the miner operator.

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  • 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)
  • Tents Or Canopies (AREA)
  • Seasonings (AREA)

Abstract

This invention discloses the addition of automatic roof bolting equipment (8,11) to continuous mining equipment (3) designed to mine seams of mate­rial such as trona or coal where it is necessary to place roof bolts to prevent collapse of the roof or overburden above the desired mineral being mined while the continuous miner is advancing into the seam of mineral or coal. The roof bolting apparatus allows the bolting operation to take place while the miner continues mining and is ideally performed by the miner operator.

Description

  • This invention relates to an automatic roof bolter.
  • Mining seams of minerals such as trona or coal found in rela­tively deep underground formations has always caused problems of maintain­ing proper support of the roof structure or overhead rock strata after the mineral or coal has been removed from the seam. Most mining machines have therefore had limited ability to mine to a relatively great depth in a seam without backing out to allow a bolter to be moved into the mined seam to place roof bolts into the overhead seam of rock (or mine roof) to pro­vide support for the roof against cave-in. This problem has been overcome to some degree by various means such as attaching roof bolters to the mining machine itself and configuring the bolter apparatus such that it hydraulically places and locks into position both floor and roof jacks to prevent vibration and motion of the roof-bolting mechanism during the bolting operation.
  • Various means in the prior art have been utilized to provide such a stable platform for the roof-bolting operation, which consists of drilling the hole in the roof, inserting a bolt with an expansion shell end (similar to a molly bolt) and tightening the bolt into position. This has been achieved using non-automatic and automatic independent bolters.
  • To date only non-automatic bolters have been mounted on mining machines. A non-automatic bolter requires an operator to manually mount a drill, drill a hole, remove the drill, mount a bolt and secure the bolt. An automatic bolting machine automatically conducts the above series of steps sequentially after the machine is actuated. All bolting machines normally have their own motive and power source, independent of any mining machines which they follow.
  • This operation has required great stability, which has been achieved with non-automatic bolters as disclosed in patents such as U.S. Patent No. 3,647,262, to Kemarey, which provides a detachable and movable roof-bolting system. The system is carried by the miner, deploys floor and ceiling jacks to hold the bolter in position, performs the drilling and bolting operation, is recoupled to the mining machine and advanced forward on the mining machine to its original position so as to be in position to detach and perform the next roof bolting sequence. U.S. Patent No. 3,493,058 to J. Zitko, provides a similar system. U.S. Patent No. 4,173,373 to Campbell et al. provides a means for carrying non-auto­matic bolters on an extensible conveyor, which gives and takes slack between the continuous miner and the roof bolters when they are fixed in position during the bolting operation. U.S. Patent No. 4,199,193 to Damron et al. provides for non-automatic roof bolters to be attached to floor and ceiling jacks which are hydraulically and flexibly attached to the miner. The floor and roof jacks are placed into position with the hydraulically extensible means allowing the miner to continue to move while fixedly holding the roof bolter in a position in which it can be operated.
  • A continuous mining system for extracting minerals, coal, trona or other desired material from an underground seam has been developed which has the capacity, while continuing the mining operation, of conduct­ing roof bolting operations which can be performed by either the mining machine operator or by a separate bolting machine operator without the necessity of stopping and withdrawing the miner from the minable material face being mined. During the bolting operation, an automatic bolting machine containing a bolt magazine and a drill and bolt driver which can be indexed into position for the required operation of drilling or bolting is electrically or hydraulically moved into pressure contact with the roof of the mined entry at the point where a roof bolt is desired to be emplaced. A drill is then indexed into position and accuated by a power unit. The hole is drilled to the desired depth to accomodate the desired roof bolt. The drill is withdrawn from the hole, indexed away from the drilled hole. A bolt is automatically removed from the bolt magazine and placed in position in the bolter driver which is indexed into position, drives and secures the bolt into the roof. This entire operation is con­ducted without placing floor support jacks in position to stabilize the bolter. The continuous miner continues to mine the minable material coal face during the bolting operation.
  • Referring to the accompanying illustrative drawings:
    • FIG. 1 is a top plan view of a continuous mining machine embody­ing the present invention.
    • FIG. 2 is a side elevation of the continuous mining machine emboding the present invention showing the automatic bolter deployed into drilling and bolting position against the mine roof.
    • FIG. 3 is an expanded top plan view of the automatic bolter.
    • FIG. 4 is an expanded side elevation of the automatic bolter in retracted position.
  • It is the primary object of this invention to provide a continu­ous mining system comprising a continuous mining machine which carries it own fixedly mounted automatic roof-bolting mechanism which can be actuated to contact the mine roof and emplace a roof bolt without the necessity of securing the roof bolter against vibration by the placement of floor jacks, in which the bolting operation can be conducted while the continu­ous miner is actively mining the minable material face. The drilling and bolting operation can be conducted through hydraulic electronic or mechan­ically sequenced drilling and bolting steps by either an operator separate from the miner operator or, more preferably, by the continuous miner operator.
  • FIG. 1 illustrates a top view of a conventional type of continu­ous miner, such as a Joy 12HM9 or 12HM10 (manufactured by Joy Mahinery of Frankin, PA), which has been lenthened to allow the mounting of automatic roof-bolting equipment on the miner. A continuous mining machine is a mining machine designed to remove minable material from the minable material face and to load the material into cars or converyors without the use of cutting machines, drills or explosives. It is preferred to locate the automatic bolting equipment as far forward on the miner as possible to allow roof bolting as early as possible to prevent cave-ins. It is thus particularly desirable to mount the automatic bolting equipment ahead of the operator or operators on the machine where safety regulations require. The automatic bolting equipment may, if desired, be mounted at any desired space on the miner. Depending on the size, length and width of the machine, one or more automatic bolting machines are mounted on the contin­uous miner. The frequency and spacing of bolts is determined by safety requirements.
  • The automatic bolting machine mechanism 1 is fixedly mounted to the chassis of a continuous mining machine 2, which contains cutter heads 3 driven by driver mechanism 13 and a mined material discharge conveyor 4 and an adjustable conveyor tail piece 14. The automatic bolting mechanism 1 is mounted to an extensible mechanism 5 by which the automatic bolting mechanism 1 is moved vertically until an anchor stud 12 comes into pres­sure contact with the mine roof 6. The automatic bolting sequence is then initiated in which a drilling mechanism 7 is indexed onto position 14 and actuated to drill a hole 20 in the mine roof 6. The drilling mechanism 7 is then withdrawn and indexed back to its original position. A bolt is automatically removed from a bolt magazine 8 and is indexed into the bolt driver 9, the driver 9 is indexed into position 14, the bolt is pushed up into the drilled hole and tightened to lock it into position. Any auto­matic bolting system may be used, such as Tamrock Robolt built by Tampella-Tamrock of Finland. These automatic bolters are well known in the industry but have previously only been attached to boom arms extending from the bolting mechanism's own motive and power source separate from a mining machine.
  • The automatic bolter 1 is raised by extensible mechanism 5 which can be driven by conventional means such as hydraulic or electric motors. The drilling mechanism 7 and the bolt driver 9 can also be driven by hydraulic or electric motors.
  • The cutter heads on the continuous miner are conventional heads such as drum, fixed and ossillating heads and contact the mine face 19 to remove minable material.
  • Depending on the type of continuous miner used, the miner may carry a stabilization jack 15 to stabilize the miner during mining opera­tions.
  • The miner controls 16 and the automatic bolter controls 17 are shown in FIG. 1 where the miner operator can operate both the miner and the automatic bolter. An alternate embodiment would place the automatic bolter controls in area 18 to be operated by an operator other than the miner operator.

Claims (5)

1. A method of continuously mining underground minable material with a continuous mining machine comprising mining the minable material from a seam of said minable material to form a mined cavity having a roof and floor in which the roof is stabilized by roof bolts secured in holes drilled into the roof, characterised in that it comprises fixedly attaching to the mining machine at least one automatic roof bolting machine which can be actuated by the operator to secure the roof by emplacing roof bolts in the absence of floor and roof stabilizing jacks for the automatic roof bolting machine as the machine continuously mines the minable material from the seam face.
2. A method as claimed in claim 1 wherein the automatic roof bolting machine is hydraulically actuated by the mining machine operator.
3. A method as claimed in claim 1 or claim 2 wherein the minable material is trona.
4. A method as claimed in any of claims 1 to 3 wherein there are two automatic roof bolting machines mounted forward of the operator of the mining machine.
5. A method as claimed in claim 4 wherein the automatic roof bolting machines are operated by an operator other than the mining machine operator.
EP86306475A 1985-08-23 1986-08-21 Roof bolting method Expired - Lifetime EP0216506B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US76854385A 1985-08-23 1985-08-23
US768543 1996-12-18

Publications (2)

Publication Number Publication Date
EP0216506A1 true EP0216506A1 (en) 1987-04-01
EP0216506B1 EP0216506B1 (en) 1990-10-24

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ID=25082794

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EP86306475A Expired - Lifetime EP0216506B1 (en) 1985-08-23 1986-08-21 Roof bolting method

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EP (1) EP0216506B1 (en)
JP (1) JPS6255396A (en)
AU (1) AU582010B2 (en)
DE (1) DE3675131D1 (en)
DK (1) DK402586A (en)
ES (1) ES2002473A6 (en)
FI (1) FI863357A (en)
NO (1) NO863380L (en)
ZA (1) ZA866366B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002020946A1 (en) * 2000-09-11 2002-03-14 Voest-Alpine Bergtechnik Method for boring and placing bolts for imbedding adhesively and device for carrying out this method
US6698529B2 (en) * 2001-04-20 2004-03-02 Oldenburg Cannon, Inc. Translating turret rock bolter
US20100221071A1 (en) * 2006-09-15 2010-09-02 J. H. Fletcher & Co Remotely controlled mining machines, control systems, and related methods
WO2011057603A3 (en) * 2009-11-11 2011-10-13 Dh Mining System Gmbh Compact roadheader
WO2017125126A1 (en) * 2016-01-18 2017-07-27 Hazemag & Epr Gmbh Header and loading machine, and method for excavating rock
CN113494302A (en) * 2021-07-08 2021-10-12 中煤科工开采研究院有限公司 Anchor rod drilling machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT5578U1 (en) 2001-04-25 2002-08-26 Voest Alpine Bergtechnik PITCHING OR EXTRACTION MACHINE

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3493058A (en) * 1968-04-30 1970-02-03 Consolidation Coal Co Roof drilling and bolting method and apparatus
DE1807972B2 (en) * 1968-11-09 1971-09-09 Demag Ag, 4100 Duisburg Anchor hole drilling device for a tunnel driven by a tunnel boring machine
US3647262A (en) * 1970-01-07 1972-03-07 Charles W Kacmarcy Roof bolting method and assembly
US4173373A (en) * 1977-08-25 1979-11-06 Peabody Coal Company, Inc. Advance method and apparatus for mining
US4199193A (en) * 1978-07-28 1980-04-22 Acme Machinery Company Underground mining machine having temporary roof support means and roof bolting means associated therewith
GB2075091A (en) * 1980-05-01 1981-11-11 Ingersoll Rand Co Mining and bolting method and apparatus
DE3108877A1 (en) * 1980-03-27 1982-01-07 Voest - Alpine AG, 1011 Wien Method of producing bolted supports as well as apparatus for carrying out this method
WO1985000636A1 (en) * 1983-07-27 1985-02-14 Kembla Coal & Coke Pty. Limited Continuous mining machine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4297057A (en) * 1978-12-26 1981-10-27 Dresser Industries, Inc. Pivotal roof bolter and extendable rotatable protective canopy for mining machine
AU1582783A (en) * 1983-06-16 1984-12-20 Rhone-Poulenc Sante Process for the preparation of tetrahydrothiopen - and tetrahydrothiopyran-derivatives

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3493058A (en) * 1968-04-30 1970-02-03 Consolidation Coal Co Roof drilling and bolting method and apparatus
DE1807972B2 (en) * 1968-11-09 1971-09-09 Demag Ag, 4100 Duisburg Anchor hole drilling device for a tunnel driven by a tunnel boring machine
US3647262A (en) * 1970-01-07 1972-03-07 Charles W Kacmarcy Roof bolting method and assembly
US4173373A (en) * 1977-08-25 1979-11-06 Peabody Coal Company, Inc. Advance method and apparatus for mining
US4199193A (en) * 1978-07-28 1980-04-22 Acme Machinery Company Underground mining machine having temporary roof support means and roof bolting means associated therewith
DE3108877A1 (en) * 1980-03-27 1982-01-07 Voest - Alpine AG, 1011 Wien Method of producing bolted supports as well as apparatus for carrying out this method
GB2075091A (en) * 1980-05-01 1981-11-11 Ingersoll Rand Co Mining and bolting method and apparatus
WO1985000636A1 (en) * 1983-07-27 1985-02-14 Kembla Coal & Coke Pty. Limited Continuous mining machine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
COAL AGE, vol. 83, no. 2, February 1978, pages 72-99, New York, US; N.P. CHIRONIS "New mining ideas abound in 1978" *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002020946A1 (en) * 2000-09-11 2002-03-14 Voest-Alpine Bergtechnik Method for boring and placing bolts for imbedding adhesively and device for carrying out this method
AT410002B (en) * 2000-09-11 2003-01-27 Voest Alpine Bergtechnik METHOD FOR DRILLING AND SETTING ADHESIVE ANCHORS AND DEVICE FOR CARRYING OUT THIS METHOD
US6698529B2 (en) * 2001-04-20 2004-03-02 Oldenburg Cannon, Inc. Translating turret rock bolter
US20100221071A1 (en) * 2006-09-15 2010-09-02 J. H. Fletcher & Co Remotely controlled mining machines, control systems, and related methods
WO2011057603A3 (en) * 2009-11-11 2011-10-13 Dh Mining System Gmbh Compact roadheader
CN102713144A (en) * 2009-11-11 2012-10-03 Dh采矿***有限责任公司 Compact selective roadheader
US20130106167A1 (en) * 2009-11-11 2013-05-02 Dh Mining System Gmbh Compact Roadheader
EA022139B1 (en) * 2009-11-11 2015-11-30 Дх Майнинг Систем Гмбх Compact selective-action roadheader
AU2010317206B2 (en) * 2009-11-11 2016-03-10 Dh Mining System Gmbh Compact roadheader
WO2017125126A1 (en) * 2016-01-18 2017-07-27 Hazemag & Epr Gmbh Header and loading machine, and method for excavating rock
EA034425B1 (en) * 2016-01-18 2020-02-06 Хацемаг Унд Эпр Гмбх Header and loading machine, and method for excavating rock
CN113494302A (en) * 2021-07-08 2021-10-12 中煤科工开采研究院有限公司 Anchor rod drilling machine
CN113494302B (en) * 2021-07-08 2024-01-30 中煤科工开采研究院有限公司 Roof bolter

Also Published As

Publication number Publication date
DK402586D0 (en) 1986-08-22
FI863357A0 (en) 1986-08-20
AU582010B2 (en) 1989-03-09
NO863380D0 (en) 1986-08-22
ZA866366B (en) 1987-05-27
AU6178386A (en) 1987-02-26
JPS6255396A (en) 1987-03-11
ES2002473A6 (en) 1988-08-16
NO863380L (en) 1987-02-24
DE3675131D1 (en) 1990-11-29
EP0216506B1 (en) 1990-10-24
DK402586A (en) 1987-02-24
FI863357A (en) 1987-02-24

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