CN204238960U - A kind of roof bolt plate for the uneven roadway with large deformation country rock of half-coal rock roadway - Google Patents
A kind of roof bolt plate for the uneven roadway with large deformation country rock of half-coal rock roadway Download PDFInfo
- Publication number
- CN204238960U CN204238960U CN201420730251.0U CN201420730251U CN204238960U CN 204238960 U CN204238960 U CN 204238960U CN 201420730251 U CN201420730251 U CN 201420730251U CN 204238960 U CN204238960 U CN 204238960U
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- CN
- China
- Prior art keywords
- plate
- roadway
- backing plate
- bolthole
- nose
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- Withdrawn - After Issue
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- Lining And Supports For Tunnels (AREA)
Abstract
The utility model discloses a kind of roof bolt plate for the uneven roadway with large deformation country rock of half-coal rock roadway, it comprises rib backing plate, crag backing plate, described rib backing plate one end is nose entity, nose front part sides contains two and rotates noses, and other end entity for having bolthole and around bolthole outwardly; Described crag backing plate one end is W shape steel plate, both sides, steel plate front end are provided with the plate washer vertical with plate body, plate washer vertically has groove, telescopic block is provided with in groove, telescopic block lower end and groove form circular port for rotating nose and insert, and the other end is have bolthole and entity outwardly around bolthole.The utility model not only structure is simple, easy to use, and has adapted to the feature of half-coal rock roadway inhomogeneous deformation, is not easy to produce overall damage, long service life.
Description
Technical field
The utility model relates to a kind of roof bolt plate being specially adapted for the uneven large deformation half-coal rock roadway country rock of underground coal exploitation.
Background technology
Each province and city, south coal resources lack, and comprise the regional girdle tax such as Jiangxi, Hunan, Yunnan, Guangxi and Sichuan and deposit more, and due to Requirements of social economy and Cost Problems, these girdles become the object of southern each colliery main force exploitation at present.At present, Hunan Province thin seam mining technology promotion and application comprehensive mechanization, but along with the increasing of complex geologic conditions degree and limit of mining, soft-rock tunnel large deformation annoyings each mining area all the time, and problem is more and more outstanding, the transport of large-scale mining equipment and running is caused all to be out of shape very difficult.For girdle Deformation in Soft Rock Tunnel and control problem, mainly concentrate in the research of alternate heading.Alternate heading refers to that rock stratum accounts for a class tunnel of driving face area 1/5 ~ 4/5, such tunnel is mainly arranged near exploiting field or work plane, be subject to exploitation disturbance larger, add that the mechanical strength of roadway surrounding rock own is low, its deflection is large, deformation time is long, cause supporting and protection structure to lose efficacy and tunnel unstability, considerably increase and safeguard and reprocess cost, directly affect safety of coal mines High-efficient Production.
From the investigation of a large amount of tunnels and site observation result, can find: the distortion for girdle alternate heading is uneven, there is certain feature, such as: roadway's sides middle and lower part bloats seriously, upper deformation is less, makes tunnel become inverted trapezoidal by original rectangle; Or roadway's sides is in " recessed " or " convex " shape, etc.Therefore, feature that supporting for deep-well large deformation class alternate heading not only should be embodied in " three is high ", but also the coupling at " key position " and " other position " will be embodied in, the deformation characteristics in coal seam should be considered, consider the deformation characteristics of rock stratum again.Current support technology major part does not consider the feature of the inhomogeneous deformation of deep alternate heading country rock, causes supporting and protection structure body not mate mutually with surrouding rock stress, occurs that prop local or key position easily destroy, thus affects whole supporting effect.
Utility model content
In order to solve the problems of the technologies described above, a kind of roof bolt plate for uneven large deformation half-coal rock roadway country rock that the utility model provides a kind of structure simple, esy to use, safe and reliable.
The technical scheme that the utility model solves the problem is: a kind of roof bolt plate for the uneven roadway with large deformation country rock of half-coal rock roadway, it is characterized in that: comprise rib backing plate, crag backing plate, described rib backing plate one end is nose entity, nose front part sides contains two and rotates noses, and other end entity for having bolthole and around bolthole outwardly; Described crag backing plate one end is W shape steel plate, both sides, steel plate front end are provided with the plate washer vertical with plate body, plate washer vertically has groove, telescopic block is provided with in groove, telescopic block lower end and groove form circular port for rotating nose and insert, and the other end is have bolthole and entity outwardly around bolthole.
In the above-mentioned roof bolt plate for the uneven roadway with large deformation country rock of half-coal rock roadway, described telescopic block is combined into entirety by spring and selenodont metal derby.
In the above-mentioned roof bolt plate for the uneven roadway with large deformation country rock of half-coal rock roadway, described rib backing plate nose is W shape steel plate.
In the above-mentioned roof bolt plate for the uneven roadway with large deformation country rock of half-coal rock roadway, between described rib backing plate and nut, be provided with spring.
The beneficial effects of the utility model are:
One, rib backing plate nose entity is inserted crag backing plate groove ends entity formation entirety by the utility model, and ensures that rotating nose inserts in groove ends annulus hole, is then close to wall, anchor pole is squeezed into tunnel, fixed.The supporting and protection structure formed has that structure is simple, cost is low, processing and the feature such as easy to use;
Two, the utility model not only between backing plate mutually combination ensure that the intensity of backing plate, also with High strength bolt with the use of, in turn increase while strengthening Zhi Qiangdu and protect surface area.
Three, the utility model is out of shape uneven situation up and down for alternate heading, rib backing plate nose entity is inserted crag backing plate groove ends entity and forms overall; Ensure that rib turning cylinder inserts looping pit and by telescopic block fixation.Be out of shape larger coal seam part and must apply pressure to backing plate, now the inevitable annularly hole of the rotation nose of inside grooves is compressed telescopic block and is misplaced in tunnel, enters misaligned state; Ensure bolt support reliability.
Accompanying drawing explanation
Fig. 1 is structure chart of the present utility model.
Fig. 2 is assembling schematic diagram of the present utility model.
Fig. 3 is construction of the present utility model and deformation state schematic diagram.
In figure: crag backing plate 1, nose 2, plate washer 3, rib backing plate 4, anchor pole 5, nut 6, bolthole 7, spring 8, rotation nose 9, selenodont metal derby 10, spring 11,12 groove.
As shown in Figure 1 and Figure 2, the utility model comprises crag backing plate 1 and rib backing plate 4, comprise rib backing plate, crag backing plate, described rib backing plate 4 one end is nose entity, nose entity adopts W shape steel plate, nose front part sides is provided with two and rotates noses 9, and other end entity for having bolthole 7 and around bolthole outwardly; Described crag backing plate 1 one end is W shape steel plate, both sides, steel plate front end are provided with the plate washer 3 vertical with plate body, plate washer perpendicular 3 is to having groove 12, telescopic block is provided with in groove 12, telescopic block is combined into entirety by spring 11 and selenodont metal derby 10, telescopic block lower end and groove 12 form circular port, and circular port inserts for the rotation nose 9 of rib backing plate 4, and the other end of crag backing plate 1 is have bolthole 7 and entity outwardly around bolthole.During use, form overall in the circular port rotation nose 9 of rib backing plate 4 being inserted crag backing plate 1, be then close to wall, anchor pole is squeezed into tunnel, fixed.It installs design sketch as shown in Figure 3.
Bolthole 7 matches with the anchor pole 5 when installing, and anchor pole 5 is fixed by nut 6; In addition, be also provided with high strong spring 8 between rib backing plate 4 and nut 6, thus more can adapt to rib large deformation.
The utility model not only structure is simple, easy to use, and has adapted to the feature of half-coal rock roadway inhomogeneous deformation, is not easy to produce overall damage, long service life.
Claims (4)
1. the roof bolt plate for the uneven roadway with large deformation country rock of half-coal rock roadway, it is characterized in that: comprise rib backing plate, crag backing plate, described rib backing plate one end is nose entity, nose front part sides contains two and rotates noses, and other end entity for having bolthole and around bolthole outwardly; Described crag backing plate one end is W shape steel plate, both sides, steel plate front end are provided with the plate washer vertical with plate body, plate washer vertically has groove, telescopic block is provided with in groove, telescopic block lower end and groove form circular port for rotating nose and insert, and the other end is have bolthole and entity outwardly around bolthole.
2., as claimed in claim 1 for the roof bolt plate of the uneven roadway with large deformation country rock of half-coal rock roadway, it is characterized in that: described telescopic block is combined into entirety by spring and selenodont metal derby.
3., as claimed in claim 1 for the roof bolt plate of the uneven roadway with large deformation country rock of half-coal rock roadway, it is characterized in that: described rib backing plate nose is W shape steel plate.
4., as claimed in claim 1 for the roof bolt plate of the uneven roadway with large deformation country rock of half-coal rock roadway, it is characterized in that: between described rib backing plate and nut, be provided with spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420730251.0U CN204238960U (en) | 2014-11-26 | 2014-11-26 | A kind of roof bolt plate for the uneven roadway with large deformation country rock of half-coal rock roadway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420730251.0U CN204238960U (en) | 2014-11-26 | 2014-11-26 | A kind of roof bolt plate for the uneven roadway with large deformation country rock of half-coal rock roadway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204238960U true CN204238960U (en) | 2015-04-01 |
Family
ID=52768473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420730251.0U Withdrawn - After Issue CN204238960U (en) | 2014-11-26 | 2014-11-26 | A kind of roof bolt plate for the uneven roadway with large deformation country rock of half-coal rock roadway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204238960U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329106A (en) * | 2014-11-26 | 2015-02-04 | 湖南科技大学 | Roof bolt plate for nonuniform- and large-deformation roadway surrounding rock of half-coal tunnel |
-
2014
- 2014-11-26 CN CN201420730251.0U patent/CN204238960U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329106A (en) * | 2014-11-26 | 2015-02-04 | 湖南科技大学 | Roof bolt plate for nonuniform- and large-deformation roadway surrounding rock of half-coal tunnel |
| CN104329106B (en) * | 2014-11-26 | 2016-06-08 | 湖南科技大学 | A kind of roof bolt plate for the uneven roadway with large deformation country rock of half-coal rock roadway |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150401 Effective date of abandoning: 20160608 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |