GB1325877A - Mine roof support arrangements - Google Patents

Mine roof support arrangements

Info

Publication number
GB1325877A
GB1325877A GB1325877DA GB1325877A GB 1325877 A GB1325877 A GB 1325877A GB 1325877D A GB1325877D A GB 1325877DA GB 1325877 A GB1325877 A GB 1325877A
Authority
GB
United Kingdom
Prior art keywords
advancing
roof support
mine roof
conveyor
anchorages
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
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.)
Gullick Dobson Ltd
Original Assignee
Gullick Dobson 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 Gullick Dobson Ltd filed Critical Gullick Dobson Ltd
Publication of GB1325877A publication Critical patent/GB1325877A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK 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
    • E21D23/0052—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor with advancing shifting devices connected therewith

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)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

1325877 Advancing mine roof supports GULLICK DOBSON Ltd 10 Nov 1970 [16 Aug 1969] 41026/69 Heading E1P An advancing mine roof support anchorage system for the main and/or tail gate of a longwall mine working comprises a face conveyor C, a roof support consisting of forward and rearward frame units 10, 11, and a conveyor anchorage beam 18 which has forward and rearward jacks 23 and is connected to the advancing rams of the units 10, 11 for selective advance. The system also includes forward and rearward frame units 27, 28 connected by means of advancing rams to prop anchorages 38, 39, respectively, the said anchorages in turn being interconnected by the rods 41 on which the conveyor rests. For modus operandi, the Specification and Figs. 9-12 (not shown) should be referred to.
GB1325877D 1969-08-16 1969-08-16 Mine roof support arrangements Expired GB1325877A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4102669 1969-08-16

Publications (1)

Publication Number Publication Date
GB1325877A true GB1325877A (en) 1973-08-08

Family

ID=10417772

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1325877D Expired GB1325877A (en) 1969-08-16 1969-08-16 Mine roof support arrangements

Country Status (1)

Country Link
GB (1) GB1325877A (en)

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees