GB2142075B - Mine-roof supports - Google Patents

Mine-roof supports

Info

Publication number
GB2142075B
GB2142075B GB08415024A GB8415024A GB2142075B GB 2142075 B GB2142075 B GB 2142075B GB 08415024 A GB08415024 A GB 08415024A GB 8415024 A GB8415024 A GB 8415024A GB 2142075 B GB2142075 B GB 2142075B
Authority
GB
United Kingdom
Prior art keywords
mine
roof supports
roof
supports
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
GB08415024A
Other versions
GB8415024D0 (en
GB2142075A (en
Inventor
Nigel Hill
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.)
Dowty Mining Equipment Ltd
Original Assignee
Dowty Mining Equipment 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
Priority claimed from GB838316941A external-priority patent/GB8316941D0/en
Application filed by Dowty Mining Equipment Ltd filed Critical Dowty Mining Equipment Ltd
Priority to GB08415024A priority Critical patent/GB2142075B/en
Publication of GB8415024D0 publication Critical patent/GB8415024D0/en
Publication of GB2142075A publication Critical patent/GB2142075A/en
Application granted granted Critical
Publication of GB2142075B publication Critical patent/GB2142075B/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/08—Advancing mechanisms
    • E21D23/081—Advancing mechanisms forming parts of the roof supports
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
    • E21D23/0034—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face comprising a goaf shield articulated to a base member
    • E21D23/0039—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face comprising a goaf shield articulated to a base member and supported by a strut or by a row of struts parallel to the working face
GB08415024A 1983-06-22 1984-06-13 Mine-roof supports Expired GB2142075B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08415024A GB2142075B (en) 1983-06-22 1984-06-13 Mine-roof supports

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB838316941A GB8316941D0 (en) 1983-06-22 1983-06-22 Mine roof supports
GB08415024A GB2142075B (en) 1983-06-22 1984-06-13 Mine-roof supports

Publications (3)

Publication Number Publication Date
GB8415024D0 GB8415024D0 (en) 1984-07-18
GB2142075A GB2142075A (en) 1985-01-09
GB2142075B true GB2142075B (en) 1986-07-23

Family

ID=26286452

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08415024A Expired GB2142075B (en) 1983-06-22 1984-06-13 Mine-roof supports

Country Status (1)

Country Link
GB (1) GB2142075B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU194596B (en) * 1985-08-22 1988-02-29 Oroszlanyi Szenbanyak Supporting unit at underground widework for mechanized supporting equipment
GB2236136B (en) * 1989-09-21 1993-05-26 Dowty Mining Equipment Ltd A mine roof support assembly

Also Published As

Publication number Publication date
GB8415024D0 (en) 1984-07-18
GB2142075A (en) 1985-01-09

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Legal Events

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