GB2168100B - Changing the machinability and workability of a coal bed, by varying the thrust applied to the roof - Google Patents

Changing the machinability and workability of a coal bed, by varying the thrust applied to the roof

Info

Publication number
GB2168100B
GB2168100B GB08517814A GB8517814A GB2168100B GB 2168100 B GB2168100 B GB 2168100B GB 08517814 A GB08517814 A GB 08517814A GB 8517814 A GB8517814 A GB 8517814A GB 2168100 B GB2168100 B GB 2168100B
Authority
GB
United Kingdom
Prior art keywords
machinability
workability
roof
varying
changing
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
GB08517814A
Other versions
GB2168100A (en
GB8517814D0 (en
Inventor
Miroslaw Major
Wlodzimierz Sikora
Wojciech Skoczynski
Zygmunt Jaromin
Henryk Gil
Antoni Kandzia
Wojciech Halota
Stanislaw Orchel
Stanislaw Romanowicz
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.)
CT KT MASZYN GORNICZYCH KOMAG
Centrum Mechanizacji Gornictwa Komag
Original Assignee
CT KT MASZYN GORNICZYCH KOMAG
Centrum Mechanizacji Gornictwa Komag
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 CT KT MASZYN GORNICZYCH KOMAG, Centrum Mechanizacji Gornictwa Komag filed Critical CT KT MASZYN GORNICZYCH KOMAG
Publication of GB8517814D0 publication Critical patent/GB8517814D0/en
Publication of GB2168100A publication Critical patent/GB2168100A/en
Application granted granted Critical
Publication of GB2168100B publication Critical patent/GB2168100B/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
    • E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
    • E21D23/26—Hydraulic or pneumatic control

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)
  • Fluid-Pressure Circuits (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
GB08517814A 1984-12-10 1985-07-15 Changing the machinability and workability of a coal bed, by varying the thrust applied to the roof Expired GB2168100B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL25084384A PL146170B1 (en) 1984-12-10 1984-12-10 Apparatus for changing curability and mineablity of a mineral deposit

Publications (3)

Publication Number Publication Date
GB8517814D0 GB8517814D0 (en) 1985-08-21
GB2168100A GB2168100A (en) 1986-06-11
GB2168100B true GB2168100B (en) 1987-11-25

Family

ID=20024436

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08517814A Expired GB2168100B (en) 1984-12-10 1985-07-15 Changing the machinability and workability of a coal bed, by varying the thrust applied to the roof

Country Status (5)

Country Link
CN (1) CN85105216A (en)
DE (1) DE3524340A1 (en)
GB (1) GB2168100B (en)
HU (1) HUT45752A (en)
PL (1) PL146170B1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB912364A (en) * 1958-06-05 1962-12-05 N J Muschamp & Company Ltd Improved hydraulic means for the fluid pressurisation of hydraulically operable components
GB980001A (en) * 1960-08-24 1965-01-13 Dobson Ltd W E & F Improvements in or relating to mine roof supporting means
GB1593832A (en) * 1978-01-17 1981-07-22 Gullick Dobson Ltd Mine roof support control
DE2830510C3 (en) * 1978-07-12 1981-07-23 Bergwerksverband Gmbh, 4300 Essen Method and valve arrangement for setting the stamps of a walking support
GB2042035B (en) * 1979-02-06 1983-05-05 Fletcher Sutcliffe Wild Ltd Prop control system
DE2914884C2 (en) * 1979-04-12 1987-05-14 Gewerkschaft Eisenhütte Westfalia GmbH, 4670 Lünen Control device for a hydraulic ram removal with associated automatic repositioning
GB2115047B (en) * 1982-02-03 1985-06-19 Dowty Mining Equipment Ltd Mine roof support system
GB2116618B (en) * 1982-03-06 1985-11-20 Dowty Mining Equipment Ltd Mine roof supports

Also Published As

Publication number Publication date
CN85105216A (en) 1986-05-10
PL146170B1 (en) 1989-01-31
DE3524340C2 (en) 1987-11-05
PL250843A1 (en) 1986-06-17
GB2168100A (en) 1986-06-11
DE3524340A1 (en) 1986-06-12
HUT45752A (en) 1988-08-29
GB8517814D0 (en) 1985-08-21

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Legal Events

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