GB2002714B - Roadway shield - Google Patents

Roadway shield

Info

Publication number
GB2002714B
GB2002714B GB7831801A GB7831801A GB2002714B GB 2002714 B GB2002714 B GB 2002714B GB 7831801 A GB7831801 A GB 7831801A GB 7831801 A GB7831801 A GB 7831801A GB 2002714 B GB2002714 B GB 2002714B
Authority
GB
United Kingdom
Prior art keywords
roadway
shield
roadway shield
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
GB7831801A
Other versions
GB2002714A (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.)
Coal Industry Patents Ltd
Original Assignee
Coal Industry Patents 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 Coal Industry Patents Ltd filed Critical Coal Industry Patents Ltd
Priority to GB7831801A priority Critical patent/GB2002714B/en
Publication of GB2002714A publication Critical patent/GB2002714A/en
Application granted granted Critical
Publication of GB2002714B publication Critical patent/GB2002714B/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—Cantilever extension or similar protecting devices
    • E21D17/08—Cap joints for obtaining a coal-face free of pit-props
    • E21D17/082—Cap joints for obtaining a coal-face free of pit-props of sliding type

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Tents Or Canopies (AREA)
GB7831801A 1977-08-02 1978-08-01 Roadway shield Expired GB2002714B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7831801A GB2002714B (en) 1977-08-02 1978-08-01 Roadway shield

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB3233677 1977-08-02
GB7831801A GB2002714B (en) 1977-08-02 1978-08-01 Roadway shield

Publications (2)

Publication Number Publication Date
GB2002714A GB2002714A (en) 1979-02-28
GB2002714B true GB2002714B (en) 1982-01-06

Family

ID=26261319

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7831801A Expired GB2002714B (en) 1977-08-02 1978-08-01 Roadway shield

Country Status (1)

Country Link
GB (1) GB2002714B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102261972A (en) * 2011-04-19 2011-11-30 中国矿业大学(北京) Experimental platform for relation between mining fully-mechanized support and surrounding rocks

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102261972A (en) * 2011-04-19 2011-11-30 中国矿业大学(北京) Experimental platform for relation between mining fully-mechanized support and surrounding rocks

Also Published As

Publication number Publication date
GB2002714A (en) 1979-02-28

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Legal Events

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