CN203035214U - Grading whole length controllable grouting bolt - Google Patents
Grading whole length controllable grouting bolt Download PDFInfo
- Publication number
- CN203035214U CN203035214U CN 201220699999 CN201220699999U CN203035214U CN 203035214 U CN203035214 U CN 203035214U CN 201220699999 CN201220699999 CN 201220699999 CN 201220699999 U CN201220699999 U CN 201220699999U CN 203035214 U CN203035214 U CN 203035214U
- Authority
- CN
- China
- Prior art keywords
- grouting
- rod
- bolt
- slip casting
- bolt body
- 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 - Fee Related
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a grading whole length controllable grouting bolt and relates to the technical field of mine tools. The grading whole length controllable grouting bolt comprises a bolt body. A grouting opening is arranged at the front end of the bolt body. A grouting channel which penetrates through the bolt body is arranged in the middle in the bolt body. The grouting opening is communicated with the grouting channel. The grading whole length controllable grouting bolt is characterized in that a supporting tray is connected on the periphery of the front part of the bolt body through nuts. One side of the supporting tray is arranged on the periphery of the bolt body and provided with a stop-grouting plug. Grouting holes are arranged in the periphery of the bolt body at intervals. A first grouting hole in the top of the bolt body is a grouting through hole communicated with the grouting channel. Grouting retaining films of different thicknesses are reserved among the rest grouting holes and the grouting channel to form non-penetrated grouting holes. The thicknesses of grouting retaining films gradually increase from the inside to the outside. As grouting pressure breaks through, the grouting retaining films can achieve grading break-through grouting. Sealing rods which expand when meeting water are adhered among the grouting holes. The grouting channel in the bolt body is sectioned into multiple grouting zone segments. The grading whole length controllable grouting bolt can effectively overcome the defect that an ordinary grouting bolt is insufficient in grouting, complete sealing of surrounding rock, prevent the surrounding rock from slipping off and meanwhile, timely shoring can be achieved.
Description
Technical field
The utility model relates to mine apparatus technical field, is specifically related to the controlled total length grouted anchor bar of a kind of stagewise.
Background technology
At present, the mine working active support mostly is bolt support, some common bolts then exist following problem: be difficult to use in the rock mass of the tunnel of some geological conditionss, and can not seal country rock, prevent the country rock weathering, can not prevent peeling off of fissure rock between each anchor pole, be destroyed by groundwater erosion easily, cause the accident; Common grouted anchor bar ubiquity slip casting deficiency, the slurry skewness can not be realized immediate support, problems such as hole often occur stepping on, and is not suitable for the relatively poor rock mass of geological conditions.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of stagewise controlled total length grouted anchor bar, for solving defective and the deficiency that exists at anchor pole, namely can not realize serial problems such as even slip casting and immediate support.
Technical problem to be solved in the utility model realizes by the following technical solutions:
The controlled total length grouted anchor bar of a kind of stagewise, comprise a body of rod, described lever front end is provided with grouting port, described body of rod bosom is provided with the slip casting passage that runs through the body of rod, described grouting port and slip casting channel connection, it is characterized in that: the anterior periphery of the described body of rod is connected with pallet by nut, described pallet one side is positioned at body of rod periphery and is provided with stop grouting plug, have injected hole on the described body of rod periphery at interval, wherein first injected hole at body of rod top is the slip casting through hole with the slip casting channel connection, stay the plasma resistance film of establishing different-thickness to form non-through injected hole between remaining injected hole and the slip casting passage, the plasma resistance film thickness increases gradually from inside to outside, the plasma resistance film breaks through to realize stagewise breakthrough slip casting by grouting pressure, posts the water-swellable sealing rod between the injected hole, and the slip casting passage in the body of rod is divided into several slip casting sections.
Described injected hole ascending manner is in the shape of a spiral arranged.
The beneficial effects of the utility model are: the utility model is applicable to all kinds of roadway surrounding rocks, can be used for solving the problem that the country rock that causes because geological conditions is relatively poor is difficult to supporting, realized anchor bar body slurry homogenising on every side, make country rock and slurry fully bonding, form an integral body, solved common grouted anchor bar slip casting defect of insufficient effectively, finished the sealing of country rock, prevented that country rock from coming off, also can realize immediate support simultaneously.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model front-end view;
Fig. 3 is the utility model body of rod apex structure schematic diagram.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
As Fig. 1, Fig. 2, shown in Figure 3, the controlled total length grouted anchor bar of a kind of stagewise, comprise a body of rod 1, the body of rod 1 front end is provided with grouting port 7, the body of rod 1 bosom is provided with the slip casting passage that runs through the body of rod, grouting port 7 and slip casting channel connection, the body of rod 1 anterior periphery is connected with pallet 3 by nut 2, pallet 3 one sides are positioned at the body of rod 1 periphery and are provided with stop grouting plug 4, have injected hole on the body of rod 1 periphery at interval, wherein first injected hole at the body of rod 1 top is the slip casting through hole 8 with the slip casting channel connection, stay the plasma resistance film of establishing different-thickness to form non-through injected hole 5 between remaining injected hole and the slip casting passage, the plasma resistance film thickness increases gradually from inside to outside, the plasma resistance film breaks through to realize stagewise breakthrough slip casting by grouting pressure, post water-swellable sealing rod 6 between the injected hole, the slip casting passage in the body of rod 1 is divided into several slip casting sections, injected hole ascending manner is in the shape of a spiral arranged.
Specific implementation process:
The first step: get a series of injected holes at the body of rod, the slip casting of the perforation through hole of getting through comprising the top and remaining a series of non-through injected hole;
Second step: install stop grouting plug, pallet, nut successively in order after putting a series of expansion sealing rods successively in order on the grouted anchor bar, whole like this device is with regard to adult.
In the slip casting process, slurry flows out from first aperture, body of rod top, after the first expansion bar contacts, the expansion bar begins to expand, when the expansion bar with boring inwall contact closely knit after, first section is finished slip casting, at this moment, slurry pressure increases in the hollow tube, the second aperture pressurized rises brokenly, and second section begins slip casting, repeats said process, by that analogy, until finishing whole bolt grouting.
By above-mentioned slip casting process as can be seen, this anchor pole mainly is by the open control that realizes slurry is flowed into rock mass one by one to the aperture of opening around the anchor bar body when slip casting, this segmenting slip casting process has realized anchor bar body slurry homogenising on every side, solved common grouted anchor bar slip casting defect of insufficient, make country rock and slurry fully bonding, form an integral body, sealed country rock effectively, prevented that country rock from coming off.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the manual just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (2)
1. controlled total length grouted anchor bar of stagewise, comprise a body of rod, described lever front end is provided with grouting port, described body of rod bosom is provided with the slip casting passage that runs through the body of rod, described grouting port and slip casting channel connection, it is characterized in that: the anterior periphery of the described body of rod is connected with pallet by nut, described pallet one side is positioned at body of rod periphery and is provided with stop grouting plug, have injected hole on the described body of rod periphery at interval, wherein first injected hole at body of rod top is the slip casting through hole with the slip casting channel connection, stay the plasma resistance film of establishing different-thickness to form non-through injected hole between remaining injected hole and the slip casting passage, the plasma resistance film thickness increases gradually from inside to outside, post the water-swellable sealing rod between the injected hole, the slip casting passage in the body of rod is divided into several slip casting sections.
2. the controlled total length grouted anchor bar of a kind of stagewise according to claim 1 is characterized in that: described injected hole ascending manner is in the shape of a spiral arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220699999 CN203035214U (en) | 2012-12-18 | 2012-12-18 | Grading whole length controllable grouting bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220699999 CN203035214U (en) | 2012-12-18 | 2012-12-18 | Grading whole length controllable grouting bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203035214U true CN203035214U (en) | 2013-07-03 |
Family
ID=48687347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220699999 Expired - Fee Related CN203035214U (en) | 2012-12-18 | 2012-12-18 | Grading whole length controllable grouting bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203035214U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604593A (en) * | 2016-03-17 | 2016-05-25 | 天津大学 | Three-stage anchoring combined type hollow grouting anchor rod |
| CN110608062A (en) * | 2019-10-09 | 2019-12-24 | 中国矿业大学 | Multi-section hollow grouting anchor cable and supporting method |
| CN113882883A (en) * | 2021-09-30 | 2022-01-04 | 中国矿业大学 | Fixed-length anchoring system and method for roadway roof in slow seepage or water spraying state |
-
2012
- 2012-12-18 CN CN 201220699999 patent/CN203035214U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604593A (en) * | 2016-03-17 | 2016-05-25 | 天津大学 | Three-stage anchoring combined type hollow grouting anchor rod |
| CN105604593B (en) * | 2016-03-17 | 2018-05-04 | 天津大学 | A kind of three stages anchoring Combined hollow grouted anchor bar |
| CN110608062A (en) * | 2019-10-09 | 2019-12-24 | 中国矿业大学 | Multi-section hollow grouting anchor cable and supporting method |
| CN113882883A (en) * | 2021-09-30 | 2022-01-04 | 中国矿业大学 | Fixed-length anchoring system and method for roadway roof in slow seepage or water spraying state |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20131218 |