CN104329106A - Roof bolt plate for nonuniform- and large-deformation roadway surrounding rock of half-coal tunnel - Google Patents
Roof bolt plate for nonuniform- and large-deformation roadway surrounding rock of half-coal tunnel Download PDFInfo
- Publication number
- CN104329106A CN104329106A CN201410689357.5A CN201410689357A CN104329106A CN 104329106 A CN104329106 A CN 104329106A CN 201410689357 A CN201410689357 A CN 201410689357A CN 104329106 A CN104329106 A CN 104329106A
- Authority
- CN
- China
- Prior art keywords
- plate
- roadway
- roof bolt
- backing plate
- coal
- 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.)
- Granted
Links
- 239000011435 rock Substances 0.000 title claims abstract description 34
- 239000003245 coal Substances 0.000 title claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- 210000001331 nose Anatomy 0.000 claims description 22
- 239000002184 metal Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 abstract 3
- 230000008093 supporting effect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0086—Bearing plates
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
- Connection Of Plates (AREA)
Abstract
The invention discloses a roof bolt plate for nonuniform- and large-deformation roadway surrounding rock of a half-coal tunnel. The roof bolt plate comprises a coal wall plate and a rock wall plate; one end of the coal wall plate is a convex end solid; two sides of the front part of the convex end comprise two rotating convex ends; the other end of the coal wall plate is a solid provided with an anchor bolt hole of which the periphery protrudes outwards; one end of the rock wall plate is provided with a W-shaped steel plate; two sides of the front end of the steel plate are provided with baffles perpendicular to the steel plate body; the baffles are vertically provided with grooves; telescopic blocks are arranged in the grooves; the lower ends of the telescopic blocks and the grooves form round holes into which the rotating convex end is inserted; the other end of the rock wall plate is a solid provided with an anchor bolt hole of which the periphery protrudes outwards. The roof bolt plate is simple in structure and convenient to use, adapts to the nonuniform deformation characteristic of the half-coal tunnel, is difficultly damaged integrally and is long in service life.
Description
Technical field
The present invention 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.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of roof bolt plate for uneven large deformation half-coal rock roadway country rock that a kind of structure is simple, esy to use, safe and reliable.
The technical scheme that the present invention 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.
Beneficial effect of the present invention is:
One, rib backing plate nose entity is inserted crag backing plate groove ends entity formation entirety by the present invention, 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 present invention 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 present invention is directed to alternate heading and be out of shape uneven situation up and down, rib backing plate nose entity is inserted crag backing plate groove ends entity and form 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 rotation nose of inside grooves is inevitable compress telescopic block and misplace in tunnel, enters misaligned state; Ensure bolt support reliability.
Accompanying drawing explanation
Fig. 1 is structure chart of the present invention.
Fig. 2 is assembling schematic diagram of the present invention.
Fig. 3 is construction of the present invention 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 present invention includes 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 present invention 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 |
|---|---|---|---|
| CN201410689357.5A CN104329106B (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 |
|---|---|---|---|
| CN201410689357.5A CN104329106B (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 (2)
| Publication Number | Publication Date |
|---|---|
| CN104329106A true CN104329106A (en) | 2015-02-04 |
| CN104329106B CN104329106B (en) | 2016-06-08 |
Family
ID=52403898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410689357.5A Expired - Fee Related CN104329106B (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) | CN104329106B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU174997U1 (en) * | 2017-05-26 | 2017-11-15 | ООО "ОКС-Трейд" | WASHER SUPPORT ANCHOR WITH FIXTOR |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4596496A (en) * | 1983-09-29 | 1986-06-24 | The Eastern Co. | Mine roof supporting truss system |
| CN202645599U (en) * | 2012-06-13 | 2013-01-02 | 山西潞安环保能源开发股份有限公司 | Adjustable combined member for surface protection |
| CN103075165A (en) * | 2013-01-10 | 2013-05-01 | 中国矿业大学(北京) | Composite supporting method of vertical beam of coal road |
| CN203022778U (en) * | 2012-12-20 | 2013-06-26 | 广西百色矿务局有限公司 | Left-hand thread pre-tightening device for side truss anchor cable beam |
| CN103244161A (en) * | 2013-05-23 | 2013-08-14 | 湖南科技大学 | Yielding type backing plate device |
| CN204238960U (en) * | 2014-11-26 | 2015-04-01 | 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 |
-
2014
- 2014-11-26 CN CN201410689357.5A patent/CN104329106B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4596496A (en) * | 1983-09-29 | 1986-06-24 | The Eastern Co. | Mine roof supporting truss system |
| CN202645599U (en) * | 2012-06-13 | 2013-01-02 | 山西潞安环保能源开发股份有限公司 | Adjustable combined member for surface protection |
| CN203022778U (en) * | 2012-12-20 | 2013-06-26 | 广西百色矿务局有限公司 | Left-hand thread pre-tightening device for side truss anchor cable beam |
| CN103075165A (en) * | 2013-01-10 | 2013-05-01 | 中国矿业大学(北京) | Composite supporting method of vertical beam of coal road |
| CN103244161A (en) * | 2013-05-23 | 2013-08-14 | 湖南科技大学 | Yielding type backing plate device |
| CN204238960U (en) * | 2014-11-26 | 2015-04-01 | 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU174997U1 (en) * | 2017-05-26 | 2017-11-15 | ООО "ОКС-Трейд" | WASHER SUPPORT ANCHOR WITH FIXTOR |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104329106B (en) | 2016-06-08 |
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Granted publication date: 20160608 Termination date: 20211126 |
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