PL90941B1 - - Google Patents
Download PDFInfo
- Publication number
- PL90941B1 PL90941B1 PL1974169066A PL16906674A PL90941B1 PL 90941 B1 PL90941 B1 PL 90941B1 PL 1974169066 A PL1974169066 A PL 1974169066A PL 16906674 A PL16906674 A PL 16906674A PL 90941 B1 PL90941 B1 PL 90941B1
- Authority
- PL
- Poland
- Prior art keywords
- box
- base plate
- stands
- excavation
- group
- Prior art date
Links
- 238000009412 basement excavation Methods 0.000 claims description 19
- 238000005065 mining Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 2
- 230000006978 adaptation Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 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
- E21D23/0004—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
- E21D23/0043—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 two or more rows of struts parallel to the working face
-
- 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
- E21D23/03—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor having protective means, e.g. shields, for preventing or impeding entry of loose material into the working space or support
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)
- Lining And Supports For Tunnels (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Error Detection And Correction (AREA)
- Tents Or Canopies (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2309670A DE2309670C2 (de) | 1973-02-27 | 1973-02-27 | Mit einer Versatzabschirmung versehenes Ausbaugestell für den Strebausbau im untertägigen Grubenbetrieb |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL90941B1 true PL90941B1 (pt) | 1977-02-28 |
Family
ID=5873203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL1974169066A PL90941B1 (pt) | 1973-02-27 | 1974-02-25 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3908389A (pt) |
| JP (1) | JPS547487B2 (pt) |
| CS (1) | CS202030B2 (pt) |
| DE (1) | DE2309670C2 (pt) |
| GB (1) | GB1418432A (pt) |
| PL (1) | PL90941B1 (pt) |
| ZA (1) | ZA74423B (pt) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1516637A (en) * | 1974-11-23 | 1978-07-05 | Gullick Dobson Ltd | Mine roof supports |
| DE2850073A1 (de) * | 1978-11-18 | 1980-05-29 | Fletcher Sutcliffe Wild Ltd | Grubenausbau, insbesondere strebausbau |
| GB2136040B (en) * | 1983-03-08 | 1986-06-11 | Dobson Park Ind | Pivotal linkage of a mine roof support |
| CN104213929A (zh) * | 2014-08-21 | 2014-12-17 | 四川省华蓥山煤业股份有限公司李子垭南煤矿 | 一种大倾角煤层综采支架及支护方法 |
| CN105065046B (zh) * | 2015-07-13 | 2017-07-18 | 辽宁工程技术大学 | 一种液压支架邻架间柔性防护装置 |
| CN106761870A (zh) * | 2016-11-19 | 2017-05-31 | 无锡市洗选设备厂 | 洗砂机支架组件 |
| CN106499425A (zh) * | 2016-11-19 | 2017-03-15 | 无锡市洗选设备厂 | 洗砂机的液压支护组件 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1036663A (en) * | 1964-04-03 | 1966-07-20 | Gullick Ltd | Improvements in or relating to mine roof and like supports |
| GB1124665A (en) * | 1966-04-29 | 1968-08-21 | Gullick Ltd | Improvements in or relating to mine roof supports |
| BE789390A (fr) * | 1971-10-02 | 1973-01-15 | Gewerk Eisenhuette Westfalia | Chassis de soutenement a boucliers |
-
1973
- 1973-02-27 DE DE2309670A patent/DE2309670C2/de not_active Expired
-
1974
- 1974-01-11 US US441485*A patent/US3908389A/en not_active Expired - Lifetime
- 1974-01-21 ZA ZA740423A patent/ZA74423B/xx unknown
- 1974-01-30 GB GB423374A patent/GB1418432A/en not_active Expired
- 1974-02-05 CS CS74790A patent/CS202030B2/cs unknown
- 1974-02-22 JP JP2130174A patent/JPS547487B2/ja not_active Expired
- 1974-02-25 PL PL1974169066A patent/PL90941B1/pl unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB1418432A (en) | 1975-12-17 |
| CS202030B2 (en) | 1980-12-31 |
| ZA74423B (en) | 1974-11-27 |
| JPS49117302A (pt) | 1974-11-09 |
| US3908389A (en) | 1975-09-30 |
| JPS547487B2 (pt) | 1979-04-07 |
| DE2309670B1 (de) | 1974-02-14 |
| DE2309670A1 (pt) | 1974-02-14 |
| DE2309670C2 (de) | 1974-09-05 |
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