CN2233461Y - Seal-anchored external anchoring and internal filling anchoring-bolt - Google Patents
Seal-anchored external anchoring and internal filling anchoring-bolt Download PDFInfo
- Publication number
- CN2233461Y CN2233461Y CN 95240055 CN95240055U CN2233461Y CN 2233461 Y CN2233461 Y CN 2233461Y CN 95240055 CN95240055 CN 95240055 CN 95240055 U CN95240055 U CN 95240055U CN 2233461 Y CN2233461 Y CN 2233461Y
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- CN
- China
- Prior art keywords
- anchoring
- bolt
- anchor
- sealing
- support
- 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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Abstract
The utility model relates to a seal-anchored type external anchoring and internal filling anchoring-bolt, which is used for geotechnical engineering of lanes, tunnels, underground chambers, etc. The utility model is especially suitable for ravelling support of rock formations and reinforcing. The anchoring-bolt is composed of an anchoring-bolt body 1, a filling segment 2, an anchoring-bolt segment 3, a jetting slurry hole 9, etc. Because the outside of an anchoring segment 3 is provided with a sealing anchoring roll 4, the problem that the holes of bolt-filling support are plugged is efficiently solved, and sealing and anchoring are skillfully combined together simultaneously. The support effect of the anchoring-bolt is improved, and the range of use of the anchoring-bolt support between a weak rock and a roadway subjected to dynamic pressure is enlarged. The utility model has the characteristics of low cost, simple structure, strong practicality, etc.
Description
The utility model is applicable to tunnel, tunnel, underground chamber isolith geotechnique journey, especially the ravel reinforcing and the supporting of rock stratum.
Anchor pole and slip casting all are the citation forms of tunnel isolith geotechnique journey supporting, utilize the double Grouting Pipe of doing of anchor pole, and anchor pole and slip casting are organically combined, and more effectively the reinforced roadway country rock is specially adapted to the rock stratum that ravels.The former Soviet Union just adopts hollow anchor bar to realize bolt-grouting support as Grouting Pipe at " anchor rod " (the 140th page, Figure 33 0) described in " the novel supporting in tunnel " book of publication in 1989, is used for the reinforced roadway country rock and administers floor lift in gallery; " matched non retern valve when interior grouted anchor bar and slip casting " utility model patent (patent No. is 90210897.1) of nineteen ninety Shandong Mineral College application on May 16 has also proposed the similar techniques thinking.The key technology of bolt-grouting support is the sealing between grouted anchor bar and the borehole wall, and above-mentioned technology all adopts " stop grouting plug " to seal." stop grouting plug " adopts rubber, cork, plastic or other material, only play sealing of hole effect (no anchorage effect), and the length of sealing is short and shallow, is difficult to large-scale popularization in actual engineering.
In view of the deficiency that prior art exists, the purpose of this utility model is that design a kind ofly novel combines anchoring and sealing together, good sealing effect, practical outer anchor inner grunt anchor pole.
Slip casting significantly increases rock mass strength, but and has improved prerequisite---the integrality of rock mass anchor.Because soft rock and heading country rock surface are often broken fully, formed the fragmentation circle of certain width, so slip casting also needs to keep the stable of country rock jointly with bolt-spary supports, utilize the double Grouting Pipe of doing of anchor pole, realize outer anchor inner grunt, can improve the supporting effect of soft rock and heading anchor pole greatly.At this key technical problem of the sealing between grouted anchor bar and the hole wall, the utility model adopts hard, the high-strength soon sealing cement anchor 4 of torus shape to be placed in anchoring section 3 outsides of anchor bar body 1, because its length can be by the character regulated at will of country rock, not only solved the sealing problem of bolt-grouting support effectively, prevent leaking of high pressure slurries, and sealing cement anchor 4 will seal dexterously and anchoring combines together, compares with existing anchor rod, and its supporting effect also improves greatly.
The utility model is owing to adopted fast hard, high-strength sealing cement anchor to seal and anchoring, solved the sealing problem of bolt-grouting support effectively, improved the supporting effect of anchor pole, enlarge the scope of application of bolt support in soft rock and workings subject to dy namic pressure (tunnel, chamber), had characteristics such as cost is lower, simple in structure, easy to operate, practical.
Accompanying drawing is a structure chart of the present utility model.
The utility model is made up of several parts such as anchor bar body 1, supporting plate 6, supporting plate nuts 7.Anchor bar body 1 is a hollow steel pipe, is divided into the thread segment 8 of slip casting section 2, anchoring section 3 and afterbody, and slip casting section 2 length are 1/3～2/3 of anchor bar body 1 total length, and anchoring section 3 length are 2/3～1/3 of total length, and thread segment 8 is about 100 millimeter.On slip casting section 2, be drilled with penetrating of cross-distribution and starch hole 9; The outside of anchoring section 3 is the sealing cement anchor 4 of hard, high-strength soon torus shape, and the length of sealing cement anchor 4 and anchoring section 3 are with growing, and its front portion is a baffle ring 5.The material of sealing cement anchor 4 can be the rapid setting cement volume, and its internal diameter is more bigger than the external diameter of anchor bar body 1, and external diameter is then smaller than drill hole wall.Can adjust the length of sealing cement anchor 4 according to the cranny development degree of country rock, will seal cement anchor during use earlier and immerse that the several seconds gets final product in the water, can prevent effectively that the high pressure slurries from leaking from hole, the while has also been improved the supporting effect of anchor pole.Anchor pole is packed into after borehole sealing anchoring, the slip casting, loads onto supporting plate 6 at the afterbody of anchor bar body 1, to tighten supporting plate nut 7 fixing.
Claims (3)
1. a sealing anchoring type outer anchor inner grunt anchor pole includes anchor bar body (1), slip casting section (2), anchoring section (3), supporting plate (6), nut (7) etc., and it is characterized in that: the outside of anchoring section (3) is the sealing cement anchor (4) of torus shape.
2. sealing anchoring type outer anchor inner grunt anchor pole according to claim 1 is characterized in that: the length of sealing cement anchor (4) is 1/3～2/3 of anchor bar body (1) total length.
3. sealing anchoring type outer anchor inner grunt anchor pole according to claim 1 and 2 is characterized in that: there is baffle ring (5) front portion of sealing cement anchor (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95240055 CN2233461Y (en) | 1995-06-29 | 1995-06-29 | Seal-anchored external anchoring and internal filling anchoring-bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95240055 CN2233461Y (en) | 1995-06-29 | 1995-06-29 | Seal-anchored external anchoring and internal filling anchoring-bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2233461Y true CN2233461Y (en) | 1996-08-21 |
Family
ID=33881717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95240055 Expired - Fee Related CN2233461Y (en) | 1995-06-29 | 1995-06-29 | Seal-anchored external anchoring and internal filling anchoring-bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2233461Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100445513C (en) * | 2001-04-26 | 2008-12-24 | 陈树林 | Self-fastening sealed drill sleeve and drill rod driven by drilling machine of anchor rod |
| CN100532738C (en) * | 2003-01-24 | 2009-08-26 | 诺比利费拉里有限责任公司 | Continuous realizing method of underground engineering |
| CN103362117A (en) * | 2013-07-31 | 2013-10-23 | 中国神华能源股份有限公司 | Full-section grouting method for grouting section |
-
1995
- 1995-06-29 CN CN 95240055 patent/CN2233461Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100445513C (en) * | 2001-04-26 | 2008-12-24 | 陈树林 | Self-fastening sealed drill sleeve and drill rod driven by drilling machine of anchor rod |
| CN100532738C (en) * | 2003-01-24 | 2009-08-26 | 诺比利费拉里有限责任公司 | Continuous realizing method of underground engineering |
| CN103362117A (en) * | 2013-07-31 | 2013-10-23 | 中国神华能源股份有限公司 | Full-section grouting method for grouting section |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |