HUT45752A - Method and apparatus for mining coal beds - Google Patents
Method and apparatus for mining coal bedsInfo
- Publication number
- HUT45752A HUT45752A HU241985A HU241985A HUT45752A HU T45752 A HUT45752 A HU T45752A HU 241985 A HU241985 A HU 241985A HU 241985 A HU241985 A HU 241985A HU T45752 A HUT45752 A HU T45752A
- Authority
- HU
- Hungary
- Prior art keywords
- mining coal
- coal beds
- beds
- mining
- coal
- Prior art date
Links
- 239000003245 coal Substances 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- 238000005065 mining Methods 0.000 title 1
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)
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 (1)
Publication Number | Publication Date |
---|---|
HUT45752A true HUT45752A (en) | 1988-08-29 |
Family
ID=20024436
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HU241985A HUT45752A (en) | 1984-12-10 | 1985-06-19 | Method and apparatus for mining coal beds |
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)
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 |
-
1984
- 1984-12-10 PL PL25084384A patent/PL146170B1/en unknown
-
1985
- 1985-06-19 HU HU241985A patent/HUT45752A/en unknown
- 1985-07-08 CN CN198585105216A patent/CN85105216A/en active Pending
- 1985-07-08 DE DE19853524340 patent/DE3524340A1/en active Granted
- 1985-07-15 GB GB08517814A patent/GB2168100B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CN85105216A (en) | 1986-05-10 |
DE3524340A1 (en) | 1986-06-12 |
DE3524340C2 (en) | 1987-11-05 |
PL146170B1 (en) | 1989-01-31 |
GB8517814D0 (en) | 1985-08-21 |
PL250843A1 (en) | 1986-06-17 |
GB2168100B (en) | 1987-11-25 |
GB2168100A (en) | 1986-06-11 |
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