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WO2006003917A1 - Machine à boucliers et méthode empêchant la déformation du sol latéral - Google Patents

Machine à boucliers et méthode empêchant la déformation du sol latéral Download PDF

Info

Publication number
WO2006003917A1
WO2006003917A1 PCT/JP2005/011919 JP2005011919W WO2006003917A1 WO 2006003917 A1 WO2006003917 A1 WO 2006003917A1 JP 2005011919 W JP2005011919 W JP 2005011919W WO 2006003917 A1 WO2006003917 A1 WO 2006003917A1
Authority
WO
WIPO (PCT)
Prior art keywords
shield
main
shields
tunnel
excavated
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.)
Ceased
Application number
PCT/JP2005/011919
Other languages
English (en)
Japanese (ja)
Inventor
Keizo Miki
Masataka Hayashi
Fumiyuki Yokomizo
Komei Sakamoto
Seiji Hatachi
Masahiro Yoshida
Sadafumi Inoue
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.)
Obayashi Corp
Original Assignee
Obayashi Corp
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 Obayashi Corp filed Critical Obayashi Corp
Publication of WO2006003917A1 publication Critical patent/WO2006003917A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
    • E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield

Definitions

  • the present invention relates to a shield machine and a side ground deformation prevention method, and more particularly to a shield machine and a side ground ground deformation prevention method effective for constructing a tunnel that underpasses a road or the like.
  • a shield method is used in which segments are sequentially laid on the excavated portion while the ground is being excavated using a shield machine.
  • the shield method can construct a tunnel that underpasses roads and the like without excavating the roads, and therefore can shorten the construction period and reduce construction costs. .
  • it since there is no need to block traffic, it does not affect the surrounding residential environment (see, for example, Patent Document 1).
  • Patent Document 1 JP-A-10-184268
  • the present invention has been made in view of the above-described conventional problems.
  • a tunnel that underpasses a road or the like is constructed, the ground on both sides of the approach section to the tunnel is collapsed. It is an object to provide a shield machine and a method for preventing side ground deformation that can be easily prevented, thereby shortening the construction period and reducing the construction cost. Is.
  • the present invention employs the following means in order to solve the above problems.
  • the invention according to claim 1 is a shield machine used when constructing a tunnel that underlines a road or the like, and is combined in a predetermined arrangement vertically and horizontally, and each is driven independently.
  • the side shield is driven in advance of the main shield, and then the main shield is driven.
  • the side shields when excavating the approach section, can excavate the portions on both sides of the excavation target portion with a small width, so that the outer portion without placing a sheet pile or the like. Can be prevented from collapsing.
  • the invention according to claim 2 is the shielding machine according to claim 1, wherein the main shield behaves so as to excavate a rectangular region of the main shield and moves to the side shield side. It has a cutter that can handle the side shield by moving the rectangular area to the side shield side while driving the side shield while digging the tunnel section. The part to be drilled is also configured to be excavated by the main shield.
  • the ground in the tunnel section, the ground can be excavated only by the main shield while the driving of the side shield is stopped, so that the excavation efficiency can be increased.
  • the invention according to claim 3 is the shielding machine according to claim 1, wherein the main shield includes a cutter that behaves so as to excavate a rectangular region of the main shield.
  • the auxiliary shield cutter is configured to excavate a portion corresponding to the side shield while driving the side shield is stopped.
  • the shield machine of the present invention in the tunnel section, the ground can be excavated only by the main shield in a state where the driving of the side shield is stopped. Cutting efficiency can be increased.
  • the invention according to claim 4 is the shield machine according to any one of claims 1 to 3, wherein the side shield is configured to be able to protrude and retract from the casing, and protrudes from the casing when driven, and is not It is configured to be immersed in the casing when driven.
  • the shield machine of the present invention when the tunnel section is excavated by the main shield, the side shield is immersed in the casing, so when the direction of the shield machine is changed, The direction can be changed smoothly without the shield being in the way.
  • the invention according to claim 5 uses the shield machine according to any one of claims 1 to 4 to excavate an approach section of a tunnel that underpasses a road or the like, thereby providing a side portion of the approach section. It is configured to prevent ground deformation.
  • the lateral ground deformation prevention method when excavating the approach section to the tunnel, it is possible to prevent the outside of the approach section without laying a sheet pile or the like from collapsing. Become.
  • FIG. 1 is a schematic view showing an embodiment of a shield machine and a start method of the shield machine according to the present invention, and shows the state of the side shields on both sides of the lower stage in the first stage excavation.
  • FIG. 1 is a schematic view showing an embodiment of a shield machine and a start method of the shield machine according to the present invention, and shows the state of the side shields on both sides of the lower stage in the first stage excavation.
  • FIG. 2 is an explanatory view showing a state where the side shield of FIG. 1 is further advanced.
  • FIG. 3 is an explanatory view showing the state of excavation of the main shield on both sides of the lower stage.
  • FIG. 4 An explanatory view showing the state of progress of the main shield in the middle of the lower stage.
  • FIG. 5 is an explanatory view showing the state of the side shields on both sides of the lower stage in the second stage excavation.
  • FIG. 6 is an explanatory view showing a state where the side shield of FIG. 5 is further advanced.
  • FIG. 7 is an explanatory view showing a state where the side shield of FIG. 5 is further advanced.
  • FIG. 8 is an explanatory view showing the state of excavation of the main shield on both sides of the lower stage.
  • FIG. 9 is an explanatory diagram showing the state of progress of the main shield in the middle of the lower stage.
  • FIG. 10 is an explanatory diagram showing the state of the side shields on both sides of the lower stage in the third stage excavation.
  • FIG. 11 is a front view showing a 1-stage x 2-row shield machine.
  • FIG. 12 is an explanatory view showing an eccentric state of the main shield of the shield machine of FIG. 11.
  • FIG. 13 is a cross-sectional view taken along line AA in FIG.
  • FIG. 14 is a sectional view taken along line BB in FIG.
  • FIG. 1 to FIG. 14 show an embodiment of a shield machine and side ground deformation prevention method according to the present invention. It is effective for constructing a tunnel.
  • the shield machine 1 includes a machine main body 2 having cutter blades 9 and 18 for excavating the ground. And a power unit 25 for propelling the machine main body 2 and a connecting means (not shown) for connecting the machine main body 2 and the power unit 25 to each other.
  • the machine body 2 is arranged in a rectangular cylinder-shaped front body (casing) 3 and a predetermined combination vertically and horizontally in the front body 3, and each of them can independently emerge from the front body 3, and A plurality of rectangular main shields 6 that can be driven independently, and the main shield 6 at both ends in the width direction and the front fuselage 3 are provided, and each can independently emerge from the front fuselage 3. And a plurality of side shields 15 each having a rectangular shape smaller than the main shield 6 that can be driven independently.
  • each main shield 6 and each side shield 15 are slidably provided. Therefore, it is configured to be able to invade from the front body 3 toward the front thereof.
  • Each shield 6 and each side shield 15 are configured to be able to appear and retract from the front body 3 independently.
  • a partition wall integral with the front fuselage 3 can be provided between the main shields 6 and between the main shield 6 and the side shields 15.
  • Each main shield 6 includes a rectangular shield body 7 slidably provided in the front body 3, and a slide jack that is provided between the shield body 7 and the front body 3 to move the shield body 7 forward and backward. 10 and behaves like excavating the rectangular area of the main shield 6 on the front side of the shield body 7 and shifts horizontally while drawing a straight line or arc toward the side shield 15 as shown in Fig. 12.
  • a cutter head (cutter) 8 having a cutter blade 9 at the tip, a drive source 11 provided in the shield body 7, and a power transmission mechanism 12 for transmitting the drive force of the drive source 11 to the cutter head 8.
  • Each main shield 6 is configured to be driven independently.
  • the cutter head 8 is an abbreviation for the well-known OHM method (Omni-sectional) Hedge tunneling method for excavating the rectangular area of the main shield 6.
  • OHM method Ortho-sectional Hedge tunneling method for excavating the rectangular area of the main shield 6.
  • Each side shield 15 is provided between a rectangular shield main body 16 slidably provided in the front fuselage 3 and between the shield main body 16 and the front fuselage 3, and moves the shield main body 16 forward and backward.
  • Slide jack 19 to be rotated provided rotatably on the front side of the shield body 16, and a cutter head 17 having a cutter blade 18 at the tip, a drive source 20 provided on the shield body 16, and a drive source 20
  • a power transmission mechanism 21 for transmitting the driving force to the cutter head 17, and each side shield 15 is configured to be independently drivable.
  • a discharge device (not shown) for discharging the excavated earth and sand is connected to the shield body 7 of each main shield 6 and the shield body 16 of each side shield 15.
  • the power unit 25 is connected to the rear part of the front body 3 of the machine body 2 via a connecting means (not shown).
  • a rectangular tubular rear body 26 to be connected, and a plurality of shield jacks 27 provided at four corners of the rear body 26 to propel the entire shielding machine 1 are provided.
  • the connecting means includes a connecting joint (not shown) that connects the front body 3 and the rear body 26 so as to be relatively bendable in the vertical and horizontal directions, and between the front body 3 and the rear body 26. And a foldable jack 28 that sets relative bending angles in the vertical direction and the horizontal direction with respect to the rear body 26 of the front body 3 to predetermined values.
  • a segment assembling device (not shown) is provided inside the rear body 26.
  • segments (not shown) are sequentially assembled on the inner surface of the excavated portion, and the inner wall by the segment is assembled. Is built.
  • the ground start unit located at the end of the approach section to the tunnel is installed. 1 and 2, rotate the cutter heads 17 and 17 of the side shields 15 and 15 located on the outer sides of the lower stage and operate the slide jacks 19 and 19 to operate the side shields. 15 and 15 are projected from the front body 3 at a predetermined speed, and the ground located in front of the side shields 15 and 15 is excavated by the cutter blades 18 and 18 of the cutter heads 17 and 17.
  • the cutter heads 8 and 8 of the main shields 6 and 6 located on both outer sides of the lower stage are rotationally driven, and the slide jacks 10 and 10 are operated to turn both the main shields 6 and 6 6 is projected from the same body 3 of the previous month at a predetermined speed, and the ground located in front of both main shields 6 and 6 is excavated by the cutter heads 9 and 9 of the cutter heads 8 and 8, and the excavated part is laterally Communicate to the excavated part with shields 15 and 15
  • the cutter head 8 of the main shield 6 located at the center of the lower end is rotated and the slide jack 10 is operated to move the main shield 6 from the front body 3 to a predetermined speed.
  • the ground located in front of the main shield 6 is excavated by the cutter blade 9 of the cutter head 8 and the excavated portion is communicated with the excavated portions by the main shields 6 and 6 on both sides.
  • the shield jack 27 of the power unit 25 is operated. , Move the entire shield machine 1 forward and rotate the cutter heads 17 and 17 of the side shields 15 and 15 on both sides of the lower stage to operate the slide jacks 19 and 19 as shown in Figs.
  • the shields 15 and 15 on both sides protrude from the front body 3 at a predetermined speed, and the ground located in front of the shields 15 and 15 on both sides is excavated by the cutter blades 18 and 18 of the cutter heads 17 and 17.
  • the excavated part is communicated with the first excavated part.
  • the cutter heads 8 and 8 of the main shields 6 and 6 located on both outer sides of the lower stage are rotationally driven, and the slide jacks 10 and 10 are operated so that both the main shields 6 and 6 6 is projected from the same body 3 of the previous month at a predetermined speed, and the ground located in front of both main shields 6 and 6 is excavated by the cutter heads 9 and 9 of the cutter heads 8 and 8, and the excavated part is laterally Communicate to the excavated part with shields 15 and 15
  • the cutter head 8 of the main shield 6 located at the central portion of the lower end is driven to rotate, and the slide jack 10 of the main shield 6 is operated, whereby the main shield 6 Projecting from the front fuselage 3 at a predetermined speed, the ground located in front of the main shield 6 was excavated by the cutter blade 9 of the cutter head 8, and the excavated portion was excavated by the main shields 6 and 6 on both sides. Communicate with the part.
  • the lower three main shields 6, 6, 6 and the two side shields 15, 15 complete the second stage excavation for the approach section.
  • the entire length of the approach section to the tunnel can be excavated.
  • the side shields 15 and 15 are immersed in the front fuselage 3 and the side shield 15 , 15 with the three main shields in the lower row 6, 6, 6 and the three main shields in the upper row It is sufficient to drive the nodes 6, 6, and 6, respectively.
  • the rectangular region excavated by the cutter blade 9 can be moved to the side shield 15 side, and the portion corresponding to the side shield 15 is also the main shield 6 , 6 can be excavated.
  • the side shields 15 and 15 are operated, the side shields may interfere when the direction of the shield machine is changed. The part corresponding to the side shield can be excavated while the direction can be changed smoothly without activating 15.
  • the shield machine 1 can also be dug up until it is excavated by a cutter, but the tip force of the cutter head 8, for example, can also appear. It is also possible to excavate the non-excavated portion with this copy cutter.
  • the side shield 15 when excavating the approach section to the tunnel, the side shield 15 is changed to the main shield 6. Since it is driven in advance and the side shield 15 is configured to excavate both sides of the approach section with a small width, both sides of the approach section can be prevented from collapsing. Therefore, it is not necessary to place sheet piles or the like on both sides of the approach section, so the period can be shortened and construction costs can be reduced.
  • the tunnel section When excavating the tunnel section, the tunnel section can be excavated by driving the main shield while the side shield is stopped. Therefore, the tunnel section can be excavated efficiently. It can be carried out.
  • the side shield 15 is immersed in the front fuselage 3. Therefore, when the direction of the entire shield machine 1 is changed, the direction of the entire shield machine 1 can be smoothly changed without causing the side shield 15 to get in the way.

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  • 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)

Abstract

Machine à boucliers et méthode empêchant la déformation du sol latéral. La machine à boucliers (1) utilisée dans le cadre de la construction d’un tunnel sous une route met en jeu, d’une part, une pluralité de boucliers principaux rectangulaires (6) combinés les uns aux autres latéralement et longitudinalement dans un agencement spécifié et pouvant être poussés indépendamment l’un de l’autre et, d’autre part, une pluralité de boucliers rectangulaires de partie latérale (15) installés sur les côtés externes des boucliers principaux (6) sur les deux côtés indépendamment l’un de l’autre et ayant une largeur plus petite que celle des boucliers principaux (6). Les deux côtés d’une zone d’approche sont creusés par les boucliers de partie latérale (15) en poussant les boucliers de partie latérale (15) avant les boucliers principaux (6) une fois la zone d’approche du tunnel est percée, l’effondrement des deux côtés de la zone d’approche étant empêché par les parties d’excavation.
PCT/JP2005/011919 2004-07-02 2005-06-29 Machine à boucliers et méthode empêchant la déformation du sol latéral Ceased WO2006003917A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004197171 2004-07-02
JP2004-197171 2004-07-02

Publications (1)

Publication Number Publication Date
WO2006003917A1 true WO2006003917A1 (fr) 2006-01-12

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PCT/JP2005/011919 Ceased WO2006003917A1 (fr) 2004-07-02 2005-06-29 Machine à boucliers et méthode empêchant la déformation du sol latéral

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WO (1) WO2006003917A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012062984A2 (fr) 2010-11-09 2012-05-18 Maurice Granger Appareil distributeur de materiau d'essuyage predecoupe enroule en bobine ou plie en "z"
CN110173271A (zh) * 2019-06-14 2019-08-27 中铁工程服务有限公司 一种可变径的矩形顶管机盾体

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001193386A (ja) * 2000-01-11 2001-07-17 Tobishima Corp 浅い土被り用シールド掘進装置及びシールド掘進方法
JP2005113594A (ja) * 2003-10-10 2005-04-28 Ohbayashi Corp シールド掘進機およびトンネル掘削方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001193386A (ja) * 2000-01-11 2001-07-17 Tobishima Corp 浅い土被り用シールド掘進装置及びシールド掘進方法
JP2005113594A (ja) * 2003-10-10 2005-04-28 Ohbayashi Corp シールド掘進機およびトンネル掘削方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012062984A2 (fr) 2010-11-09 2012-05-18 Maurice Granger Appareil distributeur de materiau d'essuyage predecoupe enroule en bobine ou plie en "z"
CN110173271A (zh) * 2019-06-14 2019-08-27 中铁工程服务有限公司 一种可变径的矩形顶管机盾体
CN110173271B (zh) * 2019-06-14 2024-02-27 中铁工程服务有限公司 一种可变径的矩形顶管机盾体

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