CN204402525U - A kind of Bolt System being equipped with Double tray - Google Patents
A kind of Bolt System being equipped with Double tray Download PDFInfo
- Publication number
- CN204402525U CN204402525U CN201420690477.2U CN201420690477U CN204402525U CN 204402525 U CN204402525 U CN 204402525U CN 201420690477 U CN201420690477 U CN 201420690477U CN 204402525 U CN204402525 U CN 204402525U
- Authority
- CN
- China
- Prior art keywords
- pallet
- rock
- concrete
- country rock
- yield strength
- 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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- Lining And Supports For Tunnels (AREA)
Abstract
Be equipped with a Bolt System for Double tray, it is characterized in that this system has the concrete and the pallet B that is overlying on concrete that pallet A, the later stage of installing in advance spray.For pallet A, pallet B has less convex diameter, but has higher material yield strength.When pallet A is tending towards losing efficacy at highland pressure retraction due to the large deformation of country rock initial stage, pallet B is just installed, and before installing, sprayed mortar closes pallet A.Based on this, pallet A can suitable for surrounding rock distortion in early stage with the deformable feature of its uniqueness, allows heavily stressedly being able to certain release, alleviates surrounding rock supporting difficulty; Pallet B then with its higher material yield strength and comparatively small convex shape diameter effectively suppress country rock continuous deformation, be equal to the secondary reparation to country rock.The reduction that the support system improved is support density provides possibility, and macroeconomic is reliable, is particularly worthy of popularization in the coal rock tunnel that maintenance difficulties is large.
Description
Technical field
The utility model relates to a kind of Bolt System being equipped with Double tray, is mainly used in the supporting field of high buried depth coal mine roadway, and to highland pressure, the supporting performance of high creep properties soft rock is also particularly evident.
Background technology
The utility model relates to a kind of Bolt System being equipped with Double tray, is mainly used in the supporting field of high buried depth coal mine roadway, and to highland pressure, the supporting performance of high creep properties soft rock is also particularly evident.
Summary of the invention
Technical problem: in colliery, tunnel is totally be the extraction in colliery and serving, must meet the requirements such as normal transport, ventilation in the length of service, and anchor pole serves extremely important effect in the normal section in this type of tunnel safeguarding.In the problem balance of leading release Lagging support and immediate support, be badly in need of finding a containing point, the utility model takes two pallets and the associating means being equipped with sprayed mortar obtain good solution in this problem.
Technical scheme: in prior art, rock-bolt length is generally 2200 mm or 2800 mm, the utility model anchor pole can increase by 200 mm ~ 300 mm on more original rock-bolt length basis, thus installs the excess room that pallet provides enough for later stage concrete ejection and secondary.After conveniently program is holed, insert Anchor Agent, then install anchor pole 4, pallet A, under the effect of Anchor Agent 5, anchor pole and Anchor Agent, rock mass are bonded as overall homogeneous anchor system, after applying pre-fastening moment, under the effect of pallet A, radial anchor support force is produced to rock mass.Pallet A has the larger convex space of diameter, and its diameter is
m, now under the surrouding rock deformation condition continued, the male portion of pallet A produces distortion tentatively to adapt to larger surrouding rock stress, and high-stress state is able to preliminary release.When being deformed to a certain degree, sprayed mortar spray-up, concrete parameters can refer to the requirement of conventional roadway concrete construction technology, jet thickness
lbe 200 ~ 300 mm, then install pallet B and again apply pre-fastening moment, the convex diameter of pallet B
nlittle (namely compared with the convex diameter of pallet A
n<
m) and material yield strength is large compared with pallet A, object suppresses country rock secondary deformation as far as possible, produces larger extrusion stress impel inner rock mass to recover original three-dimensional stress state to country rock.
Beneficial effect: a kind of Bolt System being equipped with Double tray is after roadway excavation, at once the pallet A installed has begun to take shape anchor system and has been applied with pretightning force to country rock, meet the principle of immediate support, the male portion that pallet A is larger is that the initial deformation release of country rock provides possibility, make rock mass interior because the heavily stressed of excavation initiation is able to preliminary release, alleviate the overall maintenance difficulties in later stage tunnel.The concrete that then sprays also can provide certain on the one hand and protect table ability, and one point of guarantees is added in the supporting for country rock, and another aspect prevents the corrosion of pallet A or ground tackle to move back anchor phenomenon.On the basis of the pallet B increased in the later stage, pallet B is with its convex scope less relative to pallet A and higher material yield stress, and provide lasting efficient supporting power, anchored force to country rock, one of support idea that this meets " three high and one low ", i.e. high strength, high rigidity brings high reliability and low support density, is safe and reliable support system.Technique is practical, make full use of the time difference on set-up time and installing space, both realized release, realize immediate support again, the collaborative coupling of two pallets, cooperatively interact, mutually supplement, be especially worthy to be popularized in the tunnel of, service year limit for length large in maintenance difficulties, entirety seems and adds material cost, actually reduce support density, and the secondary huge relative to the later stage expands for brush maintenance, its superiority is still self-evident.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
1-pallet A in figure, 2-pallet B; 3-concrete; 4-anchor rod body; 5-Anchor Agent.
Detailed description of the invention
Below in conjunction with the embodiment in accompanying drawing, the utility model will be further described:
1. hole with jumbolter and install anchor pole (4), under the effect of peripheral anchor agent (5), installing pallet A(1) and apply the pre-fastening moment of regulation, pallet A(1) male portion diameter is
m;
2. when the distortion of pallet (1) male portion is excessive, start sprayed mortar (3), jet thickness is 200 ~ 300 mm, after treating concrete ejection, starts to install pallet B(2), apply corresponding pre-fastening moment according to wall rock condition, pallet B(2) male portion diameter be
n.
Claims (2)
1. be equipped with a Bolt System for Double tray, it is characterized in that: this system is made up of jointly the concrete between pallet A, pallet B and pallet, and the material yield strength of pallet A is lower than the material yield strength of pallet B.
2. a kind of Bolt System being equipped with Double tray according to claim 1, is characterized in that: the convex diameter of pallet A
mbe greater than the convex diameter of pallet B
n.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420690477.2U CN204402525U (en) | 2014-11-18 | 2014-11-18 | A kind of Bolt System being equipped with Double tray |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420690477.2U CN204402525U (en) | 2014-11-18 | 2014-11-18 | A kind of Bolt System being equipped with Double tray |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204402525U true CN204402525U (en) | 2015-06-17 |
Family
ID=53426394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420690477.2U Expired - Fee Related CN204402525U (en) | 2014-11-18 | 2014-11-18 | A kind of Bolt System being equipped with Double tray |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204402525U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332728A (en) * | 2015-11-06 | 2016-02-17 | 中国矿业大学 | Real-time monitoring method and device of anchoring force of double-plate anchor bolt |
| CN111519640A (en) * | 2020-05-27 | 2020-08-11 | 哈尔滨工业大学 | Anchor rod supporting structure for reinforcing railway embankment side slope and construction method thereof |
| CN112483151A (en) * | 2021-01-15 | 2021-03-12 | 福州大学 | Method for supporting preset internal anchor cables for tunnel in-situ extension project |
-
2014
- 2014-11-18 CN CN201420690477.2U patent/CN204402525U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332728A (en) * | 2015-11-06 | 2016-02-17 | 中国矿业大学 | Real-time monitoring method and device of anchoring force of double-plate anchor bolt |
| CN105332728B (en) * | 2015-11-06 | 2017-07-28 | 中国矿业大学 | A kind of Double tray anchor-holding force of anchor bolt method of real-time and device |
| CN111519640A (en) * | 2020-05-27 | 2020-08-11 | 哈尔滨工业大学 | Anchor rod supporting structure for reinforcing railway embankment side slope and construction method thereof |
| CN112483151A (en) * | 2021-01-15 | 2021-03-12 | 福州大学 | Method for supporting preset internal anchor cables for tunnel in-situ extension project |
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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: 20150617 Termination date: 20151118 |
|
| EXPY | Termination of patent right or utility model |