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GB2024891A - Tunnelling shield - Google Patents

Tunnelling shield Download PDF

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Publication number
GB2024891A
GB2024891A GB7828943A GB7828943A GB2024891A GB 2024891 A GB2024891 A GB 2024891A GB 7828943 A GB7828943 A GB 7828943A GB 7828943 A GB7828943 A GB 7828943A GB 2024891 A GB2024891 A GB 2024891A
Authority
GB
United Kingdom
Prior art keywords
section
central
tunnel
shield
sections
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
GB7828943A
Other versions
GB2024891B (en
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.)
Goldsby E F
Original Assignee
Goldsby E F
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 Goldsby E F filed Critical Goldsby E F
Priority to GB7828943A priority Critical patent/GB2024891B/en
Publication of GB2024891A publication Critical patent/GB2024891A/en
Application granted granted Critical
Publication of GB2024891B publication Critical patent/GB2024891B/en
Expired 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
    • E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining

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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

The invention relates to a tunnel shield formed in three sections, a front section pivoted to a central section on rearwardly extended lugs, to allow the forward section to pivot upwardly and downwardly, the centre section being pivoted to a rear section on rearwardly extending lugs to allow the centre and front sections to pivot to left or right, and hydraulic cylinders or manually or mechanically operated jacks to pivot the sections, the peripheral edges of the sections being chamferred to overlap to prevent soil from passing between the ends of the sections. <IMAGE>

Description

SPECIFICATION Improvements in tunnel shields This invention relates to improvements in tunnel shields.
Tunnel shields for use in the excavation of tunnels have been proposed in which a cylindrical shield is inserted into the tunnel as the tunnel is dug to prevent the top and sides from collapsing as the excavation proceeds for protection of the excavators and it has been found difficult to alter the direction of the tunnel both up and down and to right or left as extra height and width has to be excavated to allow the shield to move out of a straight line.
The object of the invention is to provide means in the shield to reduce the removal of surplus material therefor.
According to the invention a tunnel shield is constructed in three sections a forward section pivoted to a central section in a horizontal plane to allow the forward section to pivot upwardly and downwardly, the central section being pivoted to a rear section in a vertical plane to allow the forward and central sections to pivot to the right or left.
The invention will be described with reference to the accompanying drawings:- Fig. 1 is a vertical section of the tunnel shield; Fig. 2 is a section on line 2-2 Fig. 1.
A cylindrical tunnel shield A is constructed in three sections, a forward section 1 , a central section 2 and a rear section 3.
The forward section 1 is provided with rearwardly extending lugs 4 pivoted in a horizontal plane on pins 5 to the central section 2 to be capable of pivoting in a vertical plane.
The central section 2 is provided with rearwardly extending lugs 4a pivoted on the rear section 3 in a vertical plane on pins Se to be capable of pivoting in a horizontal plane.
Hydraulic cylinders 6 are pivotally mounted on the central section on brackets 7 on a reinforcing ring 7a with their rams 8 mounted on the forward section 1.
Further hydraulic cylinders 9 are pivotally mounted on brackets 10 on reinforcing rings 1 Oa on the rear section 3 with their rams mounted on the central section 2.
Alternatively the hydraulic cylinders may be replaced by screwed jacks for manual or mechanical operation.
The periphery 11 of the rear end of the forward section is chamferred to slide on a correspondingly chamferred periphery on the forward end of the central section to prevent soil and stones from entering the central bore and corresponding chamfers 12 are provided on the trailing end of the central section and the forward end of the rear section.
The chamferred edges of the sections may make metal to metal contact, or be lined with rubber or a resilient non-foamed plastic material to improve the water tightness of the joint.
A resilient foamed plastics material may be inserted within an annular zone between the front section 1 and the central section 2, and between the central section 2 and rear section 3, around the rams 8 and lugs 6a respectively to prevent entry of spoil with possibly consequent jamming.
The bottom of the shield is formed in known manner with a soil plate 14 mounted on the rear section 3 and with a hinged soil plate 15 mounted on the forward section 1 to extend through the central section 2 and over-lap the soil plate 14 on the rear section 3. The interior of the shield may be reinforced by longitudinal and transverse ribs 16 also in known manner.
The shield is advanced in known manner by hydraulic cylinders (not shown) operating between a ring 13 reinforcing the tail end of the section 3 and a ring on a tunnel lining as described in my prior Specification No. 1,508,040.
1. A tunnel shield constructed in three sections comprising a forward section pivoted to a central section in horizontal plane to allow the forward section to pivot upwardly and downwardly, the central section being pivoted to a rear section in a vertical plane to allow the forward and central sections to pivot to the right or left.
2. A tunnel shield as in claim 1, in which the forward section and the central section are provided with rearwardly extending lugs to receive pins on which the forward and central sections are pivoted.
3. A tunnel shield as in claims 1 or 2 in which the sections are pivoted relatively to one another by hydraulic cylinders or jacks.
4. A tunnel shield substantially as described with reference to the accompanying drawings.
New claims or amendments to claims filed on 9/10/78.
Superseded claims 1.
New or amended claims 1. A tunnel shield constructed in three sections comprising a forward section pivoted to a central section in a horizontal plane to allow the forward section to pivot upwardly and downwardly, the central section being pivoted to a rear section in a vertical plane to allow the forward and central sections to pivot to the right or left.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (1)

  1. **WARNING** start of CLMS field may overlap end of DESC **.
    SPECIFICATION Improvements in tunnel shields This invention relates to improvements in tunnel shields.
    Tunnel shields for use in the excavation of tunnels have been proposed in which a cylindrical shield is inserted into the tunnel as the tunnel is dug to prevent the top and sides from collapsing as the excavation proceeds for protection of the excavators and it has been found difficult to alter the direction of the tunnel both up and down and to right or left as extra height and width has to be excavated to allow the shield to move out of a straight line.
    The object of the invention is to provide means in the shield to reduce the removal of surplus material therefor.
    According to the invention a tunnel shield is constructed in three sections a forward section pivoted to a central section in a horizontal plane to allow the forward section to pivot upwardly and downwardly, the central section being pivoted to a rear section in a vertical plane to allow the forward and central sections to pivot to the right or left.
    The invention will be described with reference to the accompanying drawings:- Fig. 1 is a vertical section of the tunnel shield; Fig. 2 is a section on line 2-2 Fig. 1.
    A cylindrical tunnel shield A is constructed in three sections, a forward section 1 , a central section 2 and a rear section 3.
    The forward section 1 is provided with rearwardly extending lugs 4 pivoted in a horizontal plane on pins 5 to the central section 2 to be capable of pivoting in a vertical plane.
    The central section 2 is provided with rearwardly extending lugs 4a pivoted on the rear section 3 in a vertical plane on pins Se to be capable of pivoting in a horizontal plane.
    Hydraulic cylinders 6 are pivotally mounted on the central section on brackets 7 on a reinforcing ring 7a with their rams 8 mounted on the forward section 1.
    Further hydraulic cylinders 9 are pivotally mounted on brackets 10 on reinforcing rings 1 Oa on the rear section 3 with their rams mounted on the central section 2.
    Alternatively the hydraulic cylinders may be replaced by screwed jacks for manual or mechanical operation.
    The periphery 11 of the rear end of the forward section is chamferred to slide on a correspondingly chamferred periphery on the forward end of the central section to prevent soil and stones from entering the central bore and corresponding chamfers 12 are provided on the trailing end of the central section and the forward end of the rear section.
    The chamferred edges of the sections may make metal to metal contact, or be lined with rubber or a resilient non-foamed plastic material to improve the water tightness of the joint.
    A resilient foamed plastics material may be inserted within an annular zone between the front section 1 and the central section 2, and between the central section 2 and rear section 3, around the rams 8 and lugs 6a respectively to prevent entry of spoil with possibly consequent jamming.
    The bottom of the shield is formed in known manner with a soil plate 14 mounted on the rear section 3 and with a hinged soil plate 15 mounted on the forward section 1 to extend through the central section 2 and over-lap the soil plate 14 on the rear section 3. The interior of the shield may be reinforced by longitudinal and transverse ribs 16 also in known manner.
    The shield is advanced in known manner by hydraulic cylinders (not shown) operating between a ring 13 reinforcing the tail end of the section 3 and a ring on a tunnel lining as described in my prior Specification No. 1,508,040.
    1. A tunnel shield constructed in three sections comprising a forward section pivoted to a central section in horizontal plane to allow the forward section to pivot upwardly and downwardly, the central section being pivoted to a rear section in a vertical plane to allow the forward and central sections to pivot to the right or left.
    2. A tunnel shield as in claim 1, in which the forward section and the central section are provided with rearwardly extending lugs to receive pins on which the forward and central sections are pivoted.
    3. A tunnel shield as in claims 1 or 2 in which the sections are pivoted relatively to one another by hydraulic cylinders or jacks.
    4. A tunnel shield substantially as described with reference to the accompanying drawings.
    New claims or amendments to claims filed on 9/10/78.
    Superseded claims 1.
    New or amended claims
    1. A tunnel shield constructed in three sections comprising a forward section pivoted to a central section in a horizontal plane to allow the forward section to pivot upwardly and downwardly, the central section being pivoted to a rear section in a vertical plane to allow the forward and central sections to pivot to the right or left.
GB7828943A 1978-07-05 1978-07-05 Tunnellingshield Expired GB2024891B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7828943A GB2024891B (en) 1978-07-05 1978-07-05 Tunnellingshield

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7828943A GB2024891B (en) 1978-07-05 1978-07-05 Tunnellingshield

Publications (2)

Publication Number Publication Date
GB2024891A true GB2024891A (en) 1980-01-16
GB2024891B GB2024891B (en) 1982-06-30

Family

ID=10498276

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7828943A Expired GB2024891B (en) 1978-07-05 1978-07-05 Tunnellingshield

Country Status (1)

Country Link
GB (1) GB2024891B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2166174A (en) * 1984-08-29 1986-04-30 Fairblade Ltd Tunnelling shield
EP0409092A1 (en) * 1989-07-19 1991-01-23 Kabushiki Kaisha Iseki Kaihatsu Koki Direction correcting device for shield tunnelling machine
EP0451116A1 (en) * 1990-04-02 1991-10-09 Carlo Grandori Improved telescopic double shield boring machine
US5123708A (en) * 1989-07-28 1992-06-23 Kabushiki Kaisha Iseki Kaihatsu Koki Shield tunnelling machine
RU2146005C1 (en) * 1998-10-20 2000-02-27 Бессолов Павел Павлович Gear for underground laying of pipe-lines
RU2226608C1 (en) * 2003-06-23 2004-04-10 Научно-техническая горная ассоциация Device and method for cutting and extinction of excavations
JP2016172991A (en) * 2015-03-17 2016-09-29 株式会社熊谷組 Pipe installation device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2166174A (en) * 1984-08-29 1986-04-30 Fairblade Ltd Tunnelling shield
EP0409092A1 (en) * 1989-07-19 1991-01-23 Kabushiki Kaisha Iseki Kaihatsu Koki Direction correcting device for shield tunnelling machine
US5123708A (en) * 1989-07-28 1992-06-23 Kabushiki Kaisha Iseki Kaihatsu Koki Shield tunnelling machine
EP0451116A1 (en) * 1990-04-02 1991-10-09 Carlo Grandori Improved telescopic double shield boring machine
RU2146005C1 (en) * 1998-10-20 2000-02-27 Бессолов Павел Павлович Gear for underground laying of pipe-lines
RU2226608C1 (en) * 2003-06-23 2004-04-10 Научно-техническая горная ассоциация Device and method for cutting and extinction of excavations
JP2016172991A (en) * 2015-03-17 2016-09-29 株式会社熊谷組 Pipe installation device

Also Published As

Publication number Publication date
GB2024891B (en) 1982-06-30

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee