GB1416939A - Tunnelling shields - Google Patents

Tunnelling shields

Info

Publication number
GB1416939A
GB1416939A GB2022173A GB2022173A GB1416939A GB 1416939 A GB1416939 A GB 1416939A GB 2022173 A GB2022173 A GB 2022173A GB 2022173 A GB2022173 A GB 2022173A GB 1416939 A GB1416939 A GB 1416939A
Authority
GB
United Kingdom
Prior art keywords
shield
pad
tunnelling
referred
shields
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.)
Expired
Application number
GB2022173A
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.)
BAM Nuttall Ltd
Original Assignee
Edmund Nuttall 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 Edmund Nuttall Ltd filed Critical Edmund Nuttall Ltd
Priority to GB2022173A priority Critical patent/GB1416939A/en
Publication of GB1416939A publication Critical patent/GB1416939A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E21D9/0621—Shield advancing devices

Abstract

1416939 Tunnelling shields EDMUND NUTTALL LTD 27 April 1973 20221/73 Heading E1F A rocking pad on the underside of the forward part of a tunnelling shield allows of steering of the shield as the shield is rocked about the centre of curvature of the pad by presser members at the rear of the shield acting between the shield and the wall of the tunnel in which the shield is disposed. The shield, pad and presser members may be the same as those of the tunneling machine of the referred to Specification 1233132. Preferably the pad is adjustably mounted on the shield and then may be of the form described in the referred to Specification 1416938.
GB2022173A 1973-04-27 1973-04-27 Tunnelling shields Expired GB1416939A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2022173A GB1416939A (en) 1973-04-27 1973-04-27 Tunnelling shields

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2022173A GB1416939A (en) 1973-04-27 1973-04-27 Tunnelling shields

Publications (1)

Publication Number Publication Date
GB1416939A true GB1416939A (en) 1975-12-10

Family

ID=10142400

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2022173A Expired GB1416939A (en) 1973-04-27 1973-04-27 Tunnelling shields

Country Status (1)

Country Link
GB (1) GB1416939A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108412502A (en) * 2018-03-06 2018-08-17 广西大学 A kind of deep tunnel passes through upper-soft lower-hard ground construction method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108412502A (en) * 2018-03-06 2018-08-17 广西大学 A kind of deep tunnel passes through upper-soft lower-hard ground construction method

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Legal Events

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