GB2257996B - Excavation of tunnels - Google Patents

Excavation of tunnels

Info

Publication number
GB2257996B
GB2257996B GB9215826A GB9215826A GB2257996B GB 2257996 B GB2257996 B GB 2257996B GB 9215826 A GB9215826 A GB 9215826A GB 9215826 A GB9215826 A GB 9215826A GB 2257996 B GB2257996 B GB 2257996B
Authority
GB
United Kingdom
Prior art keywords
tunnels
excavation
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 - Fee Related
Application number
GB9215826A
Other versions
GB9215826D0 (en
GB2257996A (en
Inventor
David Anthony Ballantine Baker
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.)
Balfour Beatty PLC
Original Assignee
BICC PLC
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 BICC PLC filed Critical BICC PLC
Publication of GB9215826D0 publication Critical patent/GB9215826D0/en
Publication of GB2257996A publication Critical patent/GB2257996A/en
Application granted granted Critical
Publication of GB2257996B publication Critical patent/GB2257996B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • E21D9/04—Driving tunnels or galleries through loose materials; Apparatus therefor not otherwise provided for

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)
GB9215826A 1991-07-26 1992-07-24 Excavation of tunnels Expired - Fee Related GB2257996B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB919116228A GB9116228D0 (en) 1991-07-26 1991-07-26 Excavation of tunnels

Publications (3)

Publication Number Publication Date
GB9215826D0 GB9215826D0 (en) 1992-09-09
GB2257996A GB2257996A (en) 1993-01-27
GB2257996B true GB2257996B (en) 1995-02-15

Family

ID=10699072

Family Applications (2)

Application Number Title Priority Date Filing Date
GB919116228A Pending GB9116228D0 (en) 1991-07-26 1991-07-26 Excavation of tunnels
GB9215826A Expired - Fee Related GB2257996B (en) 1991-07-26 1992-07-24 Excavation of tunnels

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB919116228A Pending GB9116228D0 (en) 1991-07-26 1991-07-26 Excavation of tunnels

Country Status (1)

Country Link
GB (2) GB9116228D0 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114320311B (en) * 2021-12-31 2024-07-23 北京住总集团有限责任公司 Surrounding rock grade-based interval underground excavation method and supporting structure

Also Published As

Publication number Publication date
GB9116228D0 (en) 1991-09-11
GB9215826D0 (en) 1992-09-09
GB2257996A (en) 1993-01-27

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Legal Events

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

Effective date: 20020724