CN201068747Y - Hollow grouting anchoring-bolt - Google Patents
Hollow grouting anchoring-bolt Download PDFInfo
- Publication number
- CN201068747Y CN201068747Y CN 200720102224 CN200720102224U CN201068747Y CN 201068747 Y CN201068747 Y CN 201068747Y CN 200720102224 CN200720102224 CN 200720102224 CN 200720102224 U CN200720102224 U CN 200720102224U CN 201068747 Y CN201068747 Y CN 201068747Y
- Authority
- CN
- China
- Prior art keywords
- injected
- drain casting
- tube body
- drain
- casting tube
- 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 - Lifetime
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- Road Signs Or Road Markings (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The utility model relates to an injected tool, in particular to a drain casting anchor rod. The utility model solves the problems that the prior injected gun has small serous fluid filling radius, slow flow speed and the injected gun needs to be cleaned after finishing the injecting, thereby wasting time and labor, etc. The utility model comprises a drain casting tube body, injected holes, a screw cap, a grout stop valve and a spacing piece, wherein, the injected holes are arranged on the drain casting tube body at intervals, the screw cap matched with a screw thread is arranged at the rear end of the drain casting tube body, the grout stop valve is arranged at the rear part of the drain casting tube body, and the spacing piece sleeved on the drain casting tube body is arranged on the upper end of the screw cap. Compared with the prior art, no matter the injected reinforcing effect, or the cleaning of the drain casting tube body and the injected speed, the utility model is more advanced than the traditional injected tool, and has simple structure, reasonable design, lower manufacturing cost, and a certain popularization value.
Description
Technical field
The utility model relates to a kind of slip casting instrument, be specially a kind of can slip casting, can play the drain casting anchor pole that roadway surrounding rock is reinforced again.
Background technology
At present, geological conditions complexity under the coal mine, mine master mining coal seam top board bedding, joints development, the compound roof that belongs to difficult supporting, especially stope tail lane are because the influence that adopted by secondary, back is very easily broken, and distortion is serious, safeguards very difficult.For effectively addressing the above problem, people adopt the slip casting instrument that injection slurry is filled in the roof strata crack, and slurries are whole with the glued one-tenth of the country rock of loose crushing, form the active support band, both avoided occurring stress and concentrated, and improved the intensity of country rock again.But the slip casting instrument that present people are adopted is the slip casting rifle, and there is following defective in actual use in this structure: 1, this slip casting rifle aperture is little, makes that slurries filling radius is little, and slurry flow rate is slower, causes slip casting effect undesirable; 2, after slip casting finishes, also must clean, waste time and energy the slip casting rifle.
Summary of the invention
The utility model exists slurries to fill after radius is little, flow velocity slow and slip casting finishes must to clean and problem such as waste time and energy the slip casting rifle in order to solve existing slip casting rifle, provide a kind of can slip casting, can play the drain casting anchor pole that roadway surrounding rock is reinforced again.
The utility model is to adopt following technical scheme to realize: the drain casting anchor pole, comprise the drain casting body, the compartment of terrain offers injected hole on the drain casting body, and drain casting body tail end is provided with the nut with its threaded engagement, and drain casting body afterbody also is equipped with grouting stop-valve.The quantity of described injected hole and big I are determined according to actual needs.The utility model adopts and offer injected hole on the drain casting body, makes slurries filling radius strengthen, and filling is more abundant rationally, and the slurry flow rate quickening, compares with traditional slip casting rifle, and injection speed has improved 3 times; In addition, after slip casting finishes, make Grouting Pipe be set in country rock under the effect of injection slurry, serve as roofbolt, the anchor pole afterbody is with double thread, by tightening of nut top board is played the suspention effect, has improved the globality and the supporting capacity of supporting and protection structure; And reduced cleaning link to Grouting Pipe, improved operating efficiency.
Described nut upper end also is provided with the pad that is sleeved on the drain casting body, has strengthened back and the slip casting body is fixed.
For proving the consolidation effect of drain casting anchor pole described in the utility model to top board, the applicant has done following experiment:
The identical conditions location is divided into A section and B section, length is 150 meters, and wherein the A section adopts traditional slip casting rifle to carry out slip casting, and the B section adopts grouted anchor bar described in the utility model to carry out slip casting, reach after slip casting and draw in 2 months the observation to draw a conclusion, concrete data see the following form:
| Slip casting section section | The amount of crushing (mm) | Two help the amount of shifting near (mm) | Other ore deposits are pressed and are manifested |
| The A section | 20-42 | 30-46 | Local area pucking is obvious |
| The B section | 10-17 | 17-25 | There is not obvious pucking phenomenon |
As seen from the above table, the consolidation effect of B section is better than the A section far away.
In a word, compared with prior art, no matter be grouting consolidation effect, or the cleaning of Grouting Pipe, injection speed be all than traditional slip casting instrument advanced person, and also simple in structure, reasonable in design, cost of manufacture is lower, has certain popularization value.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Among the figure: 1-drain casting body 2-injected hole 3-nut 4-grouting stop-valve 5-pad
The specific embodiment
The drain casting anchor pole, comprise drain casting body 1, be about 2m, the compartment of terrain offers injected hole 2 on the drain casting body 1, and diameter is about 8mm, is three flower-shaped distributions, spacing between two injected holes is about 150mm, drain casting body 1 tail end is provided with the nut 3 with its threaded engagement, and drain casting body 1 afterbody also is equipped with grouting stop-valve 4, and described nut 3 upper ends also are provided with the pad 5 that is sleeved on the drain casting body 1.
During concrete enforcement, on back, hole in advance, the drain casting anchor pole is inserted in the hole, open the grouting stop-valve of afterbody, under the effect of grouting pump, injection slurry is pumped in the drain casting anchor pole then, force after the slurries pressure-bearing diffusion of the injected hole from the drain casting anchor pole and be fills up to the country rock, close grouting stop-valve then, prevent that slurries from flowing backwards, treat that slurries solidify after, make drain casting anchor pole and rock mass form integral body, to serve as roofbolt, then pad and nut are contained in the grouted anchor bar afterbody successively, make it closely fixing with top board, play the suspention effect, improved the globality and the supporting capacity of supporting and protection structure.
Claims (2)
1. drain casting anchor pole, comprise drain casting body (1), it is characterized in that drain casting body (1) upward offers injected hole (2) in the compartment of terrain, drain casting body (1) tail end is provided with the nut (3) with its threaded engagement, and drain casting body (1) afterbody also is equipped with grouting stop-valve (4).
2. drain casting anchor pole according to claim 1 is characterized in that described nut (3) upper end also is provided with the pad (5) that is sleeved on the drain casting body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720102224 CN201068747Y (en) | 2007-08-09 | 2007-08-09 | Hollow grouting anchoring-bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720102224 CN201068747Y (en) | 2007-08-09 | 2007-08-09 | Hollow grouting anchoring-bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201068747Y true CN201068747Y (en) | 2008-06-04 |
Family
ID=39490127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200720102224 Expired - Lifetime CN201068747Y (en) | 2007-08-09 | 2007-08-09 | Hollow grouting anchoring-bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201068747Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216250A (en) * | 2013-05-08 | 2013-07-24 | 中铁十局集团西北工程有限公司 | Grouting anchor rod with control valve |
| CN103362548A (en) * | 2013-07-09 | 2013-10-23 | 淮南矿业(集团)有限责任公司 | Grouting device |
| CN106759414A (en) * | 2016-11-30 | 2017-05-31 | 上海建工集团股份有限公司 | A kind of automatically cleaning repeats formula horizontal grouting pipe and its construction method |
| CN114991820A (en) * | 2022-06-20 | 2022-09-02 | 吉林大学 | Rotatable deep hole grouting device and grouting method |
-
2007
- 2007-08-09 CN CN 200720102224 patent/CN201068747Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216250A (en) * | 2013-05-08 | 2013-07-24 | 中铁十局集团西北工程有限公司 | Grouting anchor rod with control valve |
| CN103362548A (en) * | 2013-07-09 | 2013-10-23 | 淮南矿业(集团)有限责任公司 | Grouting device |
| CN103362548B (en) * | 2013-07-09 | 2016-02-03 | 淮南矿业(集团)有限责任公司 | Provisions for grouting |
| CN106759414A (en) * | 2016-11-30 | 2017-05-31 | 上海建工集团股份有限公司 | A kind of automatically cleaning repeats formula horizontal grouting pipe and its construction method |
| CN106759414B (en) * | 2016-11-30 | 2019-03-12 | 上海建工集团股份有限公司 | A kind of automatically cleaning repeats formula horizontal grouting pipe and its construction method |
| CN114991820A (en) * | 2022-06-20 | 2022-09-02 | 吉林大学 | Rotatable deep hole grouting device and grouting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080604 |