EP0979926A2 - Procédé d'excavation de tunnels et machine de creusement - Google Patents

Procédé d'excavation de tunnels et machine de creusement Download PDF

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Publication number
EP0979926A2
EP0979926A2 EP99115503A EP99115503A EP0979926A2 EP 0979926 A2 EP0979926 A2 EP 0979926A2 EP 99115503 A EP99115503 A EP 99115503A EP 99115503 A EP99115503 A EP 99115503A EP 0979926 A2 EP0979926 A2 EP 0979926A2
Authority
EP
European Patent Office
Prior art keywords
tunnel
cutter
roller
excavating
cutter head
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Withdrawn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
EP99115503A
Other languages
German (de)
English (en)
Other versions
EP0979926A3 (fr
Inventor
Kazuyoshi Oishi
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.)
OISHI INTERNATIONAL SYSCOM Co Ltd
Original Assignee
OISHI INTERNATIONAL SYSCOM 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 OISHI INTERNATIONAL SYSCOM Co Ltd filed Critical OISHI INTERNATIONAL SYSCOM Co Ltd
Publication of EP0979926A2 publication Critical patent/EP0979926A2/fr
Publication of EP0979926A3 publication Critical patent/EP0979926A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10—Making by using boring or cutting machines
    • E21D9/1006—Making by using boring or cutting machines with rotary cutting tools
    • E21D9/104—Cutting tool fixtures
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10—Making by using boring or cutting machines
    • E21D9/1006—Making by using boring or cutting machines with rotary cutting tools
    • E21D9/1013—Making by using boring or cutting machines with rotary cutting tools on a tool-carrier supported by a movable boom
    • E21D9/102—Making by using boring or cutting machines with rotary cutting tools on a tool-carrier supported by a movable boom by a longitudinally extending boom being pivotable about a vertical and a transverse axis
    • E21D9/1026—Making by using boring or cutting machines with rotary cutting tools on a tool-carrier supported by a movable boom by a longitudinally extending boom being pivotable about a vertical and a transverse axis the tool-carrier being rotated about a transverse axis

Definitions

  • the present invention relates to a tunnel excavating process and a tunnel excavator applying the same which is suitable for excavating the entire section of base rocks to excavate a mine cavity, a tunnel, a vertical shaft and so on
  • an entire section type tunnel excavator As a tunnel excavator which is suitable for excavating the entire section of base rocks to excavate a mine cavity, a tunnel, a vertical shaft and so on, an entire section type tunnel excavator has been heretofore known.
  • the entire section type tunnel excavator is provided with a cutter head having a number of roller cutters mounted thereon whereby the cutter head is moved forward while pressing the cutter head against the base rocks and rotating the cutter head to excavate a circular section to excavate the tunnel or the like.
  • the roller cutters are arranged so as to come in contact, simultaneously and at right angles on substantially one plane and, with the working face of the tunnel vertical to the excavating direction, and in a peripheral portion of the cutter head, the roller cutters are arranged so as to contact, substantially at right angles, with the working face of the tunnel inclined rearward with respect to the excavating direction.
  • base rocks are present substantially equally in the circumference of the point of the roller cutters in contact with the base rocks, and a difference in level portion such as to cut off the base rocks in one direction is not present. Therefore, the roller cutters act against the compressive strength of the base rocks to rupture the base rocks around the point in contact with the rocks by the compressive force.
  • a plurality of roller cutter groups are arranged at given intervals in an excavating direction and in a direction vertical thereto, and points of the roller cutters in contact with base rocks belonging to the each roller cutter group are located in the vicinity of a difference in level portion formed in the base rocks to excavate the base rocks.
  • the tunnel excavator according to the present invention can suitably execute the aforementioned tunnel excavating process, in which a plurality of roller cutter groups are arranged at given intervals in an excavating direction and in a direction vertical thereto on a cutter head having a substantially conical shape.
  • FIG. 1 is a schematic front view of a cutter head of a tunnel excavator in accordance with the present invention
  • FIG. 2 is a schematic sectional view showing the state in which the tunnel is excavated by means of the tunnel excavator shown in FIG. 1.
  • a cutter head 2 disposed in front of the tunnel excavator 1 is shown, and the internal and rear mechanisms of the tunnel excavator such as a retaining mechanism for a roller cutter, a driving mechanism for the cutter head 2, a pressing mechanism and so on are omitted.
  • the tunnel excavator 1 is provided with the cutter head 2 having a substantially conical shape, as shown in FIGS. 1 and 2.
  • the cutter head 2 is capable of pressing the working face of the base rocks with desired pressure by means of the pressing mechanism not shown, and can be rotated about a center axis 0 in both normal and reverse directions, and with the desired rotational frequency and rotational torque by means of the driving mechanism not shown.
  • a plurality of groups of roller cutter groups 3 1 , 3 2 , 3 3 ... are arranged on the cutter head 2 at given intervals in an excavating direction and in a direction vertical thereto.
  • roller cutter groups 3 1 , 3 2 , 3 3 ... are arranged on concentric circles C 1 , C 2 , C 3 ... whose radiuses are different with points different in position on the center axis 0 being centers 0 1 , 0 2 , 0 3 ...
  • a spacing between the centers 0 1 , 0 2 , 0 3 ... is set to a given value ⁇ , and a difference in radius between the concentric circles C 1 , C 2 , C 3 ... is set to a given value ⁇ .
  • Each roller cutter group 3 x comprises one or more roller cutters 3 x1 , 3 x2 , ..., and in each roller cutter group 3 x , the roller cutters 3 x1 , 3 x2 , ... are arranged at equal intervals.
  • roller cutter group 3 1 While in the roller cutter group 3 1 , a single roller cutter 3 11 is arranged, and in the roller cutter group 3 3 , two roller cutters 3 31 , 3 32 are arranged symmetrically, it is to be noted that the number of and arranging state of the roller cutters are not particularly limited thereto.
  • the roller cutter 3 is detachably and rotatably mounted on a housing secured to the cutter head 2.
  • roller cutter 3 is inclined by a given angle ⁇ in an excavating direction, that is, in a direction of the center axis 0, and the extreme end of a cutter disk 3a is projected forward from the peripheral surface of the cutter head 2.
  • roller cutter 3 If the roller cutter 3 is inclined by a given angle ⁇ in an excavating direction, the side resistance of the cutter disk 3a can be reduced, and the construction in which the cutter head 2 or the like is not placed in contact with the base rocks can be constituted relatively easily.
  • a boring head 4 coaxial with the cutter head 2 is disposed on the tunnel excavator 1, and the boring head 4 rotates independently of the cutter head 2 and moves forward and backward along the center axis 0 of the cutter head 2.
  • On the boring head 4 can be suitably selectively mounted a roller cutter, a tricorne bit, a conical bit, a down the hole hammer (D.T.H), a boring bit, etc according to the characteristics of base rocks such as compressive strength and to the desired boring speed.
  • a roller cutter a tricorne bit, a conical bit, a down the hole hammer (D.T.H), a boring bit, etc according to the characteristics of base rocks such as compressive strength and to the desired boring speed.
  • a pressing cylinder 5 separately from the pressing mechanism of the cutter head 2.
  • the boring head 4 is moved forward and backward by the pressing cylinder 5 and can be pressed against the base rocks with desired pressure. It can be rotated with the desired rotational frequency and rotational torque independently of the cutter head 2 through the pressing cylinder 5.
  • the boring head 4 is moved forward and backward to assume a suitable position to facilitate the replacing and maintenance work of the cutter.
  • a spiral vane, a washing water device or the like for delivering cutting chips backward may be mounted on the boring head.
  • the boring head 4 is moved forward by the pressing cylinder 5, the boring head 4 is pressed with given pressure against the base rocks 6, and the boring head 4 is rotated at the given rotational frequency and rotational torque to bore a pilot tunnel 7.
  • the roller cutter 3 11 acts against the tensile strength of the base rocks 6 to effect a so-called undercut which ruptures the difference in level portion 6 1 while cutting it off.
  • the tensile strength of the base rocks is far smaller than the compressive strength, say 1/10, and so, according to the undercut, the base rocks can be excavated under smaller pressure to enable reduction in wear of the roller cutter 3 as well as reduction in pressure resisting strength of the roller cutter 3.
  • a roller cutter 3 21 of a roller cutter group 3 2 at a second position in an excavating direction comes in contact with the neighborhood of a difference in level portion 6 2 formed in the base rocks 6, as shown in FIG. 3 (B).
  • the difference in level portion 6 2 formed in the base rocks 6 is cut off in the direction of the pilot tunnel 7 by the cutter disk 3a of the roller cutter 3 21 to form a new difference in level portion 6 3 at the rear of the cutter disk 3a, as shown in FIG. 3 (C).
  • the difference in level portion 6 3 is cut off in the direction of the pilot tunnel 7 by the cutter disk 3a of roller cutters 3 31 and 3 32 of a roller cutter group 3 3 at a third position in an excavating direction to form a new difference in level portion 6 4 at the rear of the cutter disk 3a.
  • a difference in level portion 6 x+1 formed by roller cutters 3 x1 and 3 x2 of a forward roller cutter group 3 x is cut off by a roller cutter 3 (x+1)Y of a backward roller cutter group 3 x+1 to form a new difference in level 6 x+2 , as shown in FIG. 3 (E).
  • a plurality of roller cutter groups 3 1 , 3 2 , 3 3 ... are arranged at given intervals in an excavating direction and in a direction vertical thereto, and a difference in level portion 6 x is cut off by the undercut by means of the roller cutters 3 x1 , 3 x2 ...belonging to the roller cutter group 3 x to thereby form a new difference in level 6 x+1 . Therefore, the entire section can be excavated under pressure which is far smaller than the prior art, and the excavating performance of the tunnel excavator 1 can be rapidly enhanced.
  • roller cutter groups 3 1 , 3 2 , 3 3 ... can be realized by making the cutter head 2 a substantially conical shape, the construction of the tunnel excavator 1 will not be specially complicated as compared with the prior art.
  • the cutter head 2 a substantially conical shape, a further cubic construction is provided, which is rigid as compared with a conventional cutter head having a plane construction; a peripheral area is increased; and a taking-in opening for cutting chips can be made large so that the cutting chips can be discharged smoothly.
  • the boring head 4 is inserted into the pilot tunnel to enable the enlarging excavation using the former as a guide.
  • the tunnel excavator 1 may be used to perform the efficient excavation.
  • a boring head 8 may be secured to the cutter head 2 for rotation integral with the cutter head 2.
  • the roller cutter 3 is inclined by a given angle ⁇ with respect to the excavating direction, that is, the direction of the center axis 0, it can be made substantially parallel with the excavating direction as shown in FIG. 6.
  • the side resistance of the cutter disk 3a becomes high, and it is necessary that the roller cutters 3 71 , 3 72 , ... at least belonging to the roller cutter group 3 7 at a final position in an excavating direction are placed in an cantilever mode so as to prevent the cutter head 2 or the like from contacting the base rocks 6 to break the latter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
EP99115503A 1998-08-13 1999-08-05 Procédé d'excavation de tunnels et machine de creusement Withdrawn EP0979926A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP22896798A JP3489092B2 (ja) 1998-08-13 1998-08-13 坑道掘進工法及び坑道掘進機
JP22896798 1998-08-13

Publications (2)

Publication Number Publication Date
EP0979926A2 true EP0979926A2 (fr) 2000-02-16
EP0979926A3 EP0979926A3 (fr) 2000-08-23

Family

ID=16884680

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99115503A Withdrawn EP0979926A3 (fr) 1998-08-13 1999-08-05 Procédé d'excavation de tunnels et machine de creusement

Country Status (3)

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EP (1) EP0979926A3 (fr)
JP (1) JP3489092B2 (fr)
CA (1) CA2280113A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004094772A1 (fr) * 2003-04-22 2004-11-04 Atlas Copco Secoroc Ab Ensemble taillant de fleuret
CN105422001A (zh) * 2015-12-22 2016-03-23 山东兖煤黑豹矿业装备有限公司 一种煤矿用液压钻车
CN109356600A (zh) * 2018-11-18 2019-02-19 中国电建集团铁路建设有限公司 一种盾构用多层金刚石复合片切削刀
US20220259973A1 (en) * 2019-07-31 2022-08-18 Sandvik Mining And Construction G.M.B.H. Cutting apparatus

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101796263B (zh) * 2007-09-18 2013-01-09 布西鲁斯欧洲有限公司 牙轮钻具或牙轮钻头
JP5474408B2 (ja) * 2009-06-01 2014-04-16 三和機材株式会社 既設管改築推進用カッターヘッド
JP6624608B2 (ja) * 2016-01-29 2019-12-25 奥村機械製作株式会社 掘削機
CN108036886B (zh) * 2018-02-08 2023-11-21 中铁山河工程装备股份有限公司 一种滚刀刀圈刀体配合面正压力测试系统及其测试方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE571816A (fr) *
DE1275976B (de) * 1966-11-18 1968-08-29 Georg Schoenfeld Streckenvortriebsmaschine fuer Tunnel und Strecken im Bergbau mit Bohrwerkzeugen
US3444939A (en) * 1967-12-11 1969-05-20 Karl Gunther Bechem Cutting roller in particular roller-type enlarging bits
GB1170954A (en) * 1965-12-22 1969-11-19 Demag Ag Tunnel Drilling or Boring Machine.
JPH08260888A (ja) * 1995-03-22 1996-10-08 Komatsu Ltd トンネル掘削機

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE571816A (fr) *
GB1170954A (en) * 1965-12-22 1969-11-19 Demag Ag Tunnel Drilling or Boring Machine.
DE1275976B (de) * 1966-11-18 1968-08-29 Georg Schoenfeld Streckenvortriebsmaschine fuer Tunnel und Strecken im Bergbau mit Bohrwerkzeugen
US3444939A (en) * 1967-12-11 1969-05-20 Karl Gunther Bechem Cutting roller in particular roller-type enlarging bits
JPH08260888A (ja) * 1995-03-22 1996-10-08 Komatsu Ltd トンネル掘削機

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 02, 28 February 1997 (1997-02-28) -& JP 08 260888 A (KOMATSU LTD), 8 October 1996 (1996-10-08) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004094772A1 (fr) * 2003-04-22 2004-11-04 Atlas Copco Secoroc Ab Ensemble taillant de fleuret
CN105422001A (zh) * 2015-12-22 2016-03-23 山东兖煤黑豹矿业装备有限公司 一种煤矿用液压钻车
CN109356600A (zh) * 2018-11-18 2019-02-19 中国电建集团铁路建设有限公司 一种盾构用多层金刚石复合片切削刀
CN109356600B (zh) * 2018-11-18 2024-04-23 中电建铁路建设投资集团有限公司 一种盾构用多层金刚石复合片切削刀
US20220259973A1 (en) * 2019-07-31 2022-08-18 Sandvik Mining And Construction G.M.B.H. Cutting apparatus

Also Published As

Publication number Publication date
JP2000064788A (ja) 2000-02-29
CA2280113A1 (fr) 2000-02-13
JP3489092B2 (ja) 2004-01-19
EP0979926A3 (fr) 2000-08-23

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