CN202500591U - Resistance-increasing and yielding anchor pole - Google Patents
Resistance-increasing and yielding anchor pole Download PDFInfo
- Publication number
- CN202500591U CN202500591U CN2012200291573U CN201220029157U CN202500591U CN 202500591 U CN202500591 U CN 202500591U CN 2012200291573 U CN2012200291573 U CN 2012200291573U CN 201220029157 U CN201220029157 U CN 201220029157U CN 202500591 U CN202500591 U CN 202500591U
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- China
- Prior art keywords
- resistance
- press mechanism
- rod
- anchor pole
- increasing
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- Expired - Fee Related
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Abstract
The utility model relates to a resistance-increasing and yielding anchor pole which comprises a pole body. A resistance-increasing and yielding mechanism which can slide relative to the pole body is sleeved on one end of the pole body, wherein in the resistance-increasing and yielding mechanism one end which is farther from the pole body is equipped with outside threads, a nut of both a pallet and a spacing pallet is installed outside part of the outside threads, and the nut is connected with the resistance-increasing and yielding mechanism via the threads. When the tunnel surrounding rocks are greatly deformed, the anchor pole of the utility model is elongated; and with the elongation of the anchor pole, the anchor pole provides gradually increasing working resistance for the tunnel surrounding rocks; thus, the anchor pole of the utility model possesses very good supporting effects in the condition that the surrounding rocks are greatly deformed, thereby guaranteeing the stability of the tunnel.
Description
Technical field
The utility model relates to a kind of tunnel or anchor pole is used with supporting in the tunnel, relates in particular to a kind of resistance pressure-relieving achor bar that increases.
Background technology
Deep tunnel or the potential deformation energy of deep tunnel country rock are very big; And surrouding rock deformation comprises a part of uncontrollable distortion; The roadway surrounding rock energy is rationally discharged, give full play to the self-supporting ability of country rock, and make supporting and protection structure give full play to the function that absorbs and shift energy.So; In the supporting in deep roadway with large deformation or tunnel, only rely on support capacity common or support itself, be difficult to the drastic deformation of control country rock; Letting of supporting and protection structure presses energy-absorbing to be very important, and must give full play to the supporting capacity of roadway surrounding rock self.To press must be that control lets pressure yet let, and promptly support system slowly lets pressure under certain supporting intensity, rather than freely let pressure, and the supporting resistance should strengthen along with surrouding rock deformation gradually, and surrouding rock deformation is effectively controlled.
In underground engineering support, anchor pole is to use the support apparatus the widest, that consumption is maximum.Along with the continuous intensification of mining depth, roadway surrounding rock usually shows the characteristics of large deformation, but existing anchor pole elongation per unit length is low, and the supporting resistance can not progressively strengthen with bolt deformation, can not adapt to the characteristics of roadway surrounding rock large deformation.When moderate finite deformation appearred in country rock, because distortion initial stage energy is bigger, the deformation energy of roadway surrounding rock exceeded the scope that anchor pole can bear, and will cause support apparatus inefficacies such as anchor pole, even cause accidents such as tunnel roof fall, landslide.Chinese patent 200820119039.5 discloses a kind of anchor pole and has been made up of anchor pole canned paragraph and body of rod assembly two parts, and the anchor pole canned paragraph is a helical form; Body of rod assembly is made up of the body of rod, pallet and nut; One end of the body of rod is fixed with coupling sleeve, and the other end has external screw thread, is used for linking with nut, and tray sleeve is on the body of rod; Body of rod assembly links through coupling sleeve and anchor pole canned paragraph.Can whole anchor pole be screwed in ore bed during use.The effect of its adapter sleeve only is to be convenient to reclaim, and is little to the supporting drag effects.
Summary of the invention
The purpose of the utility model is to provide a kind of resistance pressure-relieving achor bar that increases, and the elongation per unit length that existing anchor pole exists is low, the supporting resistance can not increase with bolt deformation gradually to solve, can not satisfy the problem of roadway surrounding rock large deformation needs.
The technical scheme that the utility model is taked is:
Increase the resistance pressure-relieving achor bar; Comprise the body of rod, an end of body of rod outside is set with the resistance that increases that can slide relatively and lets press mechanism, increases resistance and lets press mechanism be provided with external screw thread from a body of rod end far away; The nut of pallet and spacing pallet is equipped with in the male thread portion outside, and nut lets press mechanism through being threaded with increasing to hinder.
Described increase the resistance let press mechanism be tubular.Describedly increase resistance and let the press mechanism termination be provided with a capping divide to get into its hollow cavity to prevent water.
The described body of rod lets the press mechanism tight fit with increasing resistance, can slide relatively, and it is increasing to increase the resistance that the said body of rod of prevention that resistance lets press mechanism provide outwards slides relatively.
The described body of rod is the high-strength prestressed anchor metal body of rod.Said increase the resistance let press mechanism process by metal material.Said pallet is a metal butterfly pallet.
The utility model can receive tensile elongation in roadway surrounding rock generation large deformation; And along with the growth of anchor pole provides the working resistance that progressively increases to roadway surrounding rock, so the utility model can still have good support action to guarantee the stable of tunnel under country rock large deformation condition.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1;
Among the figure: the 1-body of rod; 2-increases resistance lets press mechanism; The 3-pallet; The 4-nut; The 5-capping; The 6-country rock; 7-anchoring agent.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is explained further details.
As shown in Figure 1; Increase the resistance pressure-relieving achor bar; Comprise the body of rod 1, an end of the body of rod 1 outside is set with the resistance that increases that can slide relatively and lets press mechanism 2, increases resistance and lets press mechanism 2 be provided with external screw thread from the body of rod 1 end far away; The nut 4 of pallet 3 and spacing pallet 3 is equipped with in the male thread portion outside, and nut 4 lets press mechanism 2 through being threaded with increasing to hinder.
Described increase the resistance let press mechanism 2 be tubular.
In order to realize that this preferred embodiment through stretching its length and suitable for surrounding rock large deformation and the working resistance that increases gradually is provided, increases resistance and lets the external surface of press mechanism 2 inner surfaces and the body of rod 1 be designed to mate each other.When static, increase resistance and let press mechanism 2 being sleeved on the body of rod 1 tightly, increase resistance and let the press mechanism 2 and the body of rod 1 be in relative static conditions; When the axial tension of the relative separation that receives between the two reaches setting value; Both can produce the displacement of relative separation; And its corresponding slip resistance is increasing along with the increase of both relative displacements, and the rule that its resistance increases carries out as required that Design and Machining is corresponding to be increased resistance and let press mechanism; When outside axial tension is decreased to when increasing resistance and let relative slip setting shaft power value between the press mechanism 2 and the body of rod 1, relative displacement will no longer take place and remain static in the two, increase resistance and let press mechanism 2 being sleeved on the body of rod 1 tightly once more.
In order to increase strength of parts, increase resistance and let press mechanism 2 process by metal material, pallet 3 is a metal butterfly pallet.
Mostly underworkings is wet environment; Local underground water is grown; Increase resistance and let press mechanism 2 and cause increasing resistance and let the joint face generation corrosion of the press mechanism 2 and the body of rod 1 in order to prevent that moisture from getting into, to increase resistance and let the afterbody port of press mechanism 2 also be provided with a capping 5 to let the hollow cavity of press mechanism 2 be in sealing state so that increase resistance.
When being applied to this preferred embodiment in the tunnel, at first punching in roadway surrounding rock 6 utilizes anchoring agent 7 to anchor in the country rock 6 this anchor pole, utilizes nut 4 to apply pretightning force to anchor pole then.The deflection that the supporting roadway surrounding rock initial stage produces is bigger; Surrouding rock deformation can exceed the scope that anchor pole can bear; Make in the anchor pole axial pulling force become big and surpass that this patent anchor pole sets let the pressure value, increase resistance and let the press mechanism 2 and the body of rod 1 produce relative displacement, also be this preferred embodiment shows as radial drawing along with the country rock large deformation large deformation; And increase along with roadway surrounding rock and bolt deformation amount; The bolt support resistance also increases thereupon, and when deformation of the surrounding rock in tunnel active force and bolt support resistance reached an equalization point, the tunnel large deformation was tending towards end.
In sum, increase resistance through its combination and let the press mechanism and the body of rod, the utility model still has the working resistance that increases with deflection when large deformation.In the tunnel of the utility model as support apparatus; When certain distortion took place roadway surrounding rock, the utility model also stretched thereupon, and the deformation energy in the country rock obtains discharging; And the utility model can provide more and more stronger supporting resistance after stretching, and has realized the stable of tunnel.
As stated, the embodiment of the utility model has been carried out explanation at length, but as long as break away from the utility model point and the effect of the utility model in fact a lot of distortion can not arranged, this will be readily apparent to persons skilled in the art.Therefore, such variation also all is included within the protection domain of the utility model.
Claims (5)
1. increase the resistance pressure-relieving achor bar; Comprise the body of rod; It is characterized in that an end of body of rod outside is set with the resistance that increases that can slide relatively and lets press mechanism, increases resistance and lets press mechanism be provided with external screw thread from a body of rod end far away; The nut of pallet and spacing pallet is equipped with in the male thread portion outside, and nut lets press mechanism through being threaded with increasing to hinder.
2. the resistance pressure-relieving achor bar that increases according to claim 1 is characterized in that, described increase the resistance let press mechanism be tubular.
3. the resistance pressure-relieving achor bar that increases according to claim 1 is characterized in that, described increase the resistance let the press mechanism termination be provided with a capping.
4. the resistance pressure-relieving achor bar that increases according to claim 1 is characterized in that, the described body of rod is that the high-strength prestressed anchor metal body of rod is arranged, said increase the resistance let press mechanism process by metal material.
5. the resistance pressure-relieving achor bar that increases according to claim 1 is characterized in that, said pallet is a metal butterfly pallet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200291573U CN202500591U (en) | 2012-01-30 | 2012-01-30 | Resistance-increasing and yielding anchor pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200291573U CN202500591U (en) | 2012-01-30 | 2012-01-30 | Resistance-increasing and yielding anchor pole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202500591U true CN202500591U (en) | 2012-10-24 |
Family
ID=47037206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200291573U Expired - Fee Related CN202500591U (en) | 2012-01-30 | 2012-01-30 | Resistance-increasing and yielding anchor pole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202500591U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536280A (en) * | 2012-01-30 | 2012-07-04 | 山东大学 | Resistance-increasing yielding anchor rod |
-
2012
- 2012-01-30 CN CN2012200291573U patent/CN202500591U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536280A (en) * | 2012-01-30 | 2012-07-04 | 山东大学 | Resistance-increasing yielding anchor rod |
| CN102536280B (en) * | 2012-01-30 | 2014-12-10 | 山东大学 | Resistance-increasing yielding anchor rod |
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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: 20121024 Termination date: 20150130 |
|
| EXPY | Termination of patent right or utility model |