AT293310B - Wandering longwall mining - Google Patents
Wandering longwall miningInfo
- Publication number
- AT293310B AT293310B AT1033069A AT1033069A AT293310B AT 293310 B AT293310 B AT 293310B AT 1033069 A AT1033069 A AT 1033069A AT 1033069 A AT1033069 A AT 1033069A AT 293310 B AT293310 B AT 293310B
- Authority
- AT
- Austria
- Prior art keywords
- wandering
- longwall mining
- longwall
- mining
- wandering longwall
- Prior art date
Links
- 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
- E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
- E21D23/0069—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices without essential advancing shifting devices
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)
- Lining And Supports For Tunnels (AREA)
- Fluid-Pressure Circuits (AREA)
- Invalid Beds And Related Equipment (AREA)
- Tents Or Canopies (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5203468 | 1968-11-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT293310B true AT293310B (en) | 1971-10-11 |
Family
ID=10462375
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT1033069A AT293310B (en) | 1968-11-02 | 1969-11-03 | Wandering longwall mining |
Country Status (7)
Country | Link |
---|---|
US (1) | US3631681A (en) |
JP (1) | JPS4931162B1 (en) |
AT (1) | AT293310B (en) |
DE (1) | DE1954645A1 (en) |
ES (1) | ES373046A1 (en) |
FR (1) | FR2022469A1 (en) |
GB (1) | GB1289299A (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
PL210760A1 (en) * | 1977-12-13 | 1979-09-24 | Bochumer Eisen Heintzmann | VALVE TIMING ON SLIDING FRAME HOUSING |
DE8318615U1 (en) * | 1983-06-28 | 1983-11-03 | Klöckner-Becorit GmbH, 4620 Castrop-Rauxel | ALIGNMENT CYLINDER FOR SHIELD REMOVAL |
US4679856A (en) * | 1983-09-21 | 1987-07-14 | Klockner-Becorit Gmbh | Mine self-advancing roof support and method of relocating a mine winning face equipped with self-advancing roof support |
GB2164987A (en) * | 1984-09-26 | 1986-04-03 | Dowty Mining Equipment Ltd | Mine roof supports |
US5584611A (en) * | 1994-11-22 | 1996-12-17 | Long-Airdox | Roof support for underground excavations |
US6422962B1 (en) * | 2000-04-11 | 2002-07-23 | Litens Automotive Partnership | Timing belt tensioner with a backstop device with controlled one-way mechanism |
CN100507212C (en) * | 2002-12-17 | 2009-07-01 | 迪芬巴赫控制系统股份有限公司 | Coal face support in a mine |
CN103557015A (en) * | 2013-08-06 | 2014-02-05 | 四川华蓥山广能集团嘉华机械有限责任公司 | Multi-expansion hydraulic support column |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1364412A (en) * | 1963-07-24 | 1964-06-19 | Gewerk Eisenhuette Westfalia | Mobile hydraulic support for use underground in mines |
DE1236451B (en) * | 1963-12-21 | 1967-03-16 | Karl Maria Groetschel Dipl Ing | Guide element that can be used between two adjacent expansion units |
GB1079202A (en) * | 1964-10-02 | 1967-08-16 | Wild A G & Co Ltd | Improvements in or relating to roof support units for mines and the like |
-
1968
- 1968-11-02 GB GB5203468A patent/GB1289299A/en not_active Expired
-
1969
- 1969-10-30 DE DE19691954645 patent/DE1954645A1/en active Pending
- 1969-10-30 ES ES373046A patent/ES373046A1/en not_active Expired
- 1969-10-30 US US872684A patent/US3631681A/en not_active Expired - Lifetime
- 1969-10-31 FR FR6937541A patent/FR2022469A1/fr not_active Withdrawn
- 1969-11-03 AT AT1033069A patent/AT293310B/en not_active IP Right Cessation
- 1969-11-04 JP JP44087673A patent/JPS4931162B1/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
DE1954645A1 (en) | 1970-05-06 |
GB1289299A (en) | 1972-09-13 |
FR2022469A1 (en) | 1970-07-31 |
US3631681A (en) | 1972-01-04 |
JPS4931162B1 (en) | 1974-08-20 |
ES373046A1 (en) | 1971-12-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AT286064B (en) | Twist drill | |
CH492905A (en) | poetry | |
CH495189A (en) | Boring bar insert | |
DE6939179U (en) | DRILL SET | |
AT250689B (en) | Scriber mine | |
BR6908452D0 (en) | UNDERWATER MINING | |
AT293310B (en) | Wandering longwall mining | |
AT277117B (en) | Wandering longwall mining | |
AT283784B (en) | Compton spectrometer | |
AT296189B (en) | Rock drill | |
CH482606A (en) | Conveyor | |
AT264425B (en) | Longwall construction element for underground mining operations | |
CH520262A (en) | Rock drill | |
CH478364A (en) | poetry | |
AT263594B (en) | Rock drill | |
AT293309B (en) | Face device for underground mining | |
CH474740A (en) | Jumping mine | |
IT972008B (en) | DEFLAGRATOR FOR LAND MINE | |
AT259490B (en) | Migrating hydraulic longwall mining | |
CH517258A (en) | Seal construction | |
CH466351A (en) | Wear bar | |
CH515196A (en) | Explosives slurry | |
AT293980B (en) | Rock drill | |
FR1434369A (en) | Improvements to tunnel construction | |
AT285493B (en) | Rock drilling machine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ELJ | Ceased due to non-payment of the annual fee |