GB871054A - Improvements in or relating to mine arches - Google Patents
Improvements in or relating to mine archesInfo
- Publication number
- GB871054A GB871054A GB8919/59A GB891959A GB871054A GB 871054 A GB871054 A GB 871054A GB 8919/59 A GB8919/59 A GB 8919/59A GB 891959 A GB891959 A GB 891959A GB 871054 A GB871054 A GB 871054A
- Authority
- GB
- United Kingdom
- Prior art keywords
- assembly
- bolt
- release
- plane
- mine
- 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
Links
- 230000000717 retained effect Effects 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
- E21D11/24—Knuckle joints or links between arch members
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
871,054. Mine-roof supports. PAURAT, F. W. March 16, 1959 [March 14, 1958; Dec. 5, 1958], No. 8919/59. Class 20(2) A hinged arch frame for supporting a mine-roof has a dismantling assembly 4, hinged at 2A, 2B between two adjacent beams 1A, 1B; an assembly 3, attached to the beam 1A, includes a member 3.1 containing an aperture 3.4, through which a locking bolt 4.5, pivoted to the frame 4 at 4.7 can be entered and retained by the catches 4.6 acting against the right-hand face of the member 3.1. A key 5, inserted above the bolt 4.5 in the aperture 3.4 holds the assembly against accidental release. To release the assembly, the key is removed and the bolt raised. According to the frictional forces acting, the beam 1A will proceed towards the position shown dotted in Fig. 1, or in another arrangement, a hydraulic ram lifts the bolt and forces it out against greater frictional forces. A further arrangement (Figs. 6, 7, not shown) divides a beam, near one end along a plane normal to the plane of the arch and inclined to the general direction of the beam at that point. Release of wedges, &c. allows relative sliding of the beam segments in the plane of division.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE871054X | 1958-03-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB871054A true GB871054A (en) | 1961-06-21 |
Family
ID=6810686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8919/59A Expired GB871054A (en) | 1958-03-14 | 1959-03-16 | Improvements in or relating to mine arches |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB871054A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108643942A (en) * | 2018-07-16 | 2018-10-12 | 西安科技大学 | Inverted arch when a kind of hydraulic pressure adjustable adjacent |
| CN113958346A (en) * | 2021-10-21 | 2022-01-21 | 中国铁建重工集团股份有限公司 | Many pin bow member installation device |
-
1959
- 1959-03-16 GB GB8919/59A patent/GB871054A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108643942A (en) * | 2018-07-16 | 2018-10-12 | 西安科技大学 | Inverted arch when a kind of hydraulic pressure adjustable adjacent |
| CN108643942B (en) * | 2018-07-16 | 2023-11-10 | 西安科技大学 | Temporary inverted arch with adjustable hydraulic pressure |
| CN113958346A (en) * | 2021-10-21 | 2022-01-21 | 中国铁建重工集团股份有限公司 | Many pin bow member installation device |
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