CN205400775U - Prestressing force slip casting stock - Google Patents
Prestressing force slip casting stock Download PDFInfo
- Publication number
- CN205400775U CN205400775U CN201620154540.XU CN201620154540U CN205400775U CN 205400775 U CN205400775 U CN 205400775U CN 201620154540 U CN201620154540 U CN 201620154540U CN 205400775 U CN205400775 U CN 205400775U
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- CN
- China
- Prior art keywords
- prestressing force
- stock
- slip casting
- injected hole
- stretch
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- Expired - Fee Related
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Abstract
The patent of the utility model relates to a prestressing force slip casting stock comprises anchor head, cushion cap, injected hole, the body of rod, tray, excel in nut and stretch -draw muscle. This stock utilizes resin cartridge to carry out the anchor, carries out slip casting through the injected hole, makes kata -rocks weight virgin rubber form whole. The grouting segment prestress application of nut to reaching certain intensity that excel in of rotatory stock afterbody improves the bulk strength of stock. This structural design is reasonable, and the nature complicated and changeable of underground works condition and the high current variability of soft rock can effectively be solved in the construction of being convenient for, has improved the intensity of the soft rock roadway support body greatly, has extensive using value and important realistic meaning.
Description
Technical field
This utility model relates to a kind of soft rock roadway support structure, is specifically related to a kind of prestressing force grouted anchor bar.This device can be effectively improved the tensile property of grouted anchor bar, it is to avoid crack occurs in surrounding rock supporting body cementing after slip casting.
Background technology
Along with progress and the increase of social required quantity of science and technology, underground engineering towards great burying, high current degeneration, high-ground stress direction develop, thing followed hydrogeologic condition is also all the more severe.Underground engineering support usually faces the great difficulty that the factor such as heavily stressed stream soft rock, deep the abnormal geological band causes.
At present, the range of application of China's bolt support technology, being concentrated mainly in hard-rock tunnel, soft-rock tunnel, particularly under hard situation, such as supporting roadway with narrow coal pillar, compound roof, " three-soft seam ", whole enzymatic method etc. when high stress tunnel and top coal caving during short range seam mining, and in the tunnel under being affected by dynamic pressure, also it is in experiment or popularization stage, and this is also the important topic all studied both at home and abroad.And to solve this problem, it is necessary for the interaction mechanism of the further investigation duty of anchor pole, Support Resistance, anchor pole and country rock, and systematically develops new anchorage technology.
Research shows, macroscopically grows along the axial wall-rock crack of chamber, and opening width is relatively big, and slurry infiltration is good.Serosity injects in the micropore that rock is bigger, makes the macroporosity of rock reduce, and compactness extent increases；Serosity reacts with the Cucumber composition in rock, changes the material composition of rock；After rock mass structure condenses, structural plane is carried out filling reinforcing, eliminate the moisture and air that are originally present in structural plane space, change various thing Phase Proportion relations in rock mass, fragmented rock body is made again to be cemented to entirety, improve its mechanics parameter, finally improve the integrity of rock mass and the ability to function of resistance.Meanwhile, physical environment and the anchor pole condition of engineering rock mass are also improved.Suspension roof support is the developing direction of China's coal roadway support technological improvement.Compare with traditional support pattern, suspension roof support improving supporting effect, reduce support cost, accelerate into lane speed, reduce labor intensity, improve scetion utilization, simplify Ileal neobladder termination service procedure etc. in there is very prominent superiority, be the requisite supporting technology of colliery high-yield and high-efficiency.Although, in recent years in theory and practice, suspension roof support all achieves great success, but compared with the requirement of production development, also needs to improve faster.
Summary of the invention
This utility model relates to a kind of prestressing force grouted anchor bar, and this device can effectively improve the tensile strength of roadway bolt, the effective injurious deformation controlling country rock of soft rock roadway.
A kind of prestressing force grouted anchor bar, by anchorage head, cushion cap, injected hole, the body of rod, pallet, high-strength nut and stretch-draw muscle composition, is characterized in that anchorage head is the shell structure that intensity is relatively low and is easily deformed, equipped with resin explosive roll inside it.
As improvement, cushion cap is provided in the flat-shaped column structure of body of rod head, is connected with stretch-draw muscle.
As improvement, the body of rod adopts Ф 24mm hollow tubular structure, and top is uniformly distributed injected hole.
As improvement, stretch-draw muscle adopts carbon steel wire.
The invention has the beneficial effects as follows: this design simple in construction, it is simple to operation, significantly improve the intensity of anchor pole, improve the intensity of country rock of soft rock roadway prop；Anchorage head is the internal yielding shell structure of pressurized equipped with the resin explosive roll for anchoring, and during rockbolt installation, stress can deform, and internal resin explosive roll overflows thus reaching to anchor the effect of double resistance to plucking；By high-pressure slip-casting to the internal slip casting of hollow lever, serosity is diffused in the crack of country rock by injected hole, improves the integrity of rock mass and the ability to function of resistance.Meanwhile, physical environment and the anchor pole condition of engineering rock mass are also improved.By the high-strength nut of swingle tail to anchor rod body Shi Hanzhang after serosity reaches certain design strength so that anchor pole in-service can the tension that causes of all or part of counteracting load, improve the extraction-resistant behavior of anchor pole；This structure is applicable to the heavily stressed underground engineering support in deep, is particularly suited for the supporting of soft-rock tunnel.
Accompanying drawing explanation
Fig. 1 one prestressing force grouted anchor bar design drawing
Fig. 2 rock bolt head schematic diagram
Fig. 3 one prestressing force grouted anchor bar design sketch
Accompanying drawing labelling: (1) resistance to plucking head；(2) cushion cap；(3) injected hole；(4) body of rod；(5) pallet；(6) high-strength nut (7) stretch-draw muscle.
Detailed description of the invention
Below in conjunction with drawings and Examples, detailed description of the invention of the present utility model is described in further detail.Following instance is used for this utility model is described, but is not limited to scope of the present utility model.
As it is shown in figure 1, the prestressing force grouted anchor bar that this utility model embodiment provides, including resistance to plucking head 1, cushion cap 2, injected hole 3, the body of rod 4, pallet 5, high-strength nut 6, stretch-draw muscle 7.
Such as Fig. 3 during use, when rockbolt installation to boring, beat the resin explosive roll expanding and extruding inside after bar tail makes anchorage head and country rock crimp, the expansion of resistance to plucking head is possible to prevent anchor pole to slip, simultaneously the anchorage effect of resin explosive roll again can fixing anchor bar, the problem that can effectively solve the problem that anchor pole landing.By high-pressure slip-casting to the internal slip casting of hollow lever, serosity is diffused in the crack of country rock by injected hole, by the high-strength nut of swingle tail to anchor rod body Shi Hanzhang after serosity reaches certain design strength, make the anchor pole in-service can the tension that causes of all or part of counteracting load, improve the extraction-resistant behavior of anchor pole, add the intensity of prop.
As improvement, anchorage head is that intensity is relatively low, it is easy to the shell structure of deformation, equipped with resin explosive roll inside it.
As improvement, cushion cap is provided in the flat-shaped column structure of body of rod head, is connected with stretch-draw muscle.
As improvement, the body of rod adopts Ф 24mm hollow tubular structure, and top is uniformly distributed injected hole.
As improvement, stretch-draw muscle adopts carbon steel wire.
Claims (4)
1. a prestressing force grouted anchor bar, by anchorage head (1), cushion cap (2), injected hole (3), the body of rod (4), pallet (5), high-strength nut (6) and stretch-draw muscle (7) composition, is characterized in that: anchorage head (1) is the shell structure being easily deformed, equipped with resin explosive roll inside it.
2. a kind of prestressing force grouted anchor bar according to claim 1, is characterized in that: cushion cap (2) is provided in body of rod head
Flat-shaped column structure, be connected with stretch-draw muscle (7).
3. a kind of prestressing force grouted anchor bar according to claim 1, is characterized in that: the body of rod (4) adopts Ф 24mm hollow tubular structure, and top is uniformly distributed injected hole (3).
4. a kind of prestressing force grouted anchor bar according to claim 1, is characterized in that: stretch-draw muscle (7) adopts carbon steel wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620154540.XU CN205400775U (en) | 2016-03-01 | 2016-03-01 | Prestressing force slip casting stock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620154540.XU CN205400775U (en) | 2016-03-01 | 2016-03-01 | Prestressing force slip casting stock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205400775U true CN205400775U (en) | 2016-07-27 |
Family
ID=56949323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620154540.XU Expired - Fee Related CN205400775U (en) | 2016-03-01 | 2016-03-01 | Prestressing force slip casting stock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205400775U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397219A (en) * | 2018-02-27 | 2018-08-14 | 山东科技大学 | Mining slip casting prestressed anchor and its application method |
| CN113279798A (en) * | 2021-05-28 | 2021-08-20 | 中煤科工集团沈阳研究院有限公司 | Automatic measuring device for expansion deformation of protective layer for guniting hole sealing and using method |
| CN116044196A (en) * | 2022-10-14 | 2023-05-02 | 杭州明磊建筑工程技术有限公司 | Masonry reinforcement structure, masonry wall and construction method of masonry wall |
-
2016
- 2016-03-01 CN CN201620154540.XU patent/CN205400775U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397219A (en) * | 2018-02-27 | 2018-08-14 | 山东科技大学 | Mining slip casting prestressed anchor and its application method |
| CN113279798A (en) * | 2021-05-28 | 2021-08-20 | 中煤科工集团沈阳研究院有限公司 | Automatic measuring device for expansion deformation of protective layer for guniting hole sealing and using method |
| CN116044196A (en) * | 2022-10-14 | 2023-05-02 | 杭州明磊建筑工程技术有限公司 | Masonry reinforcement structure, masonry wall and construction method of masonry wall |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160727 Termination date: 20170301 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |