CN203114312U - Supporting system of prestress anchor bar for mine - Google Patents
Supporting system of prestress anchor bar for mine Download PDFInfo
- Publication number
- CN203114312U CN203114312U CN 201320090444 CN201320090444U CN203114312U CN 203114312 U CN203114312 U CN 203114312U CN 201320090444 CN201320090444 CN 201320090444 CN 201320090444 U CN201320090444 U CN 201320090444U CN 203114312 U CN203114312 U CN 203114312U
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- CN
- China
- Prior art keywords
- rod
- supporting system
- rod body
- anchor
- section
- 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 supporting system of a prestress anchor bar for a mine. The supporting system comprises a rod body, a tray and an anchor, wherein the rod body is composed of an inner anchoring section, a free section and an exposure section. The supporting system is characterized in that the rod body is made of a steel bar provided with a spiral rib on the outer side. The rod body is made of the steel bar provided with the spiral rib on the outer side, and yield strength and tensile strength of the rod body are three times those of an existing anchor rod. Therefore, after the supporting system composed of the rod body, the tray and the anchor is anchored, retaining stress of the supporting system is about three times that of a supporting system of the existing anchor rod, and firmness and safety of supporting are improved. Compared with the supporting system of an existing anchor cable, on the condition of the same retaining stress, use amount of steel is reduced and cost is reduced.
Description
Technical field
The utility model relates to the roadway support technical field for mine construction and coal mining, particularly a kind of mining prestressed anchor rod support system.
Background technology
Present mining prestressing force support system has two kinds, and a kind of is the bolt support system, and another kind is the cable bolting system.Two kinds of support systems connect and compose by the body of rod, pallet and ground tackle.Wherein the body of rod is made of interior anchor section, free section and revealed section, interior anchor section is adhesively fixed by anchoring agent and rock mass, free section produces stress deformation when stretch-draw, the part beyond revealed section refers to expose in the ground tackle outer face, and it is used for being connected with the stretch-draw jack when stretch-draw.The body of rod in the above-mentioned bolt support system is regular screw threads steel formula metallic rod body.Adopt the support system of this body of rod to have low-cost and easy to operate advantage, keep stress little but exist, therefore the unstable shortcoming of supporting generally all can cooperate the cable bolting system to use together.The body of rod of above-mentioned cable bolting system is steel strand.Adopt the support system of this body of rod to have the big and firm safe advantage of supporting of maintenance stress, but cost is higher.In addition, the body of rod revealed section in the cable bolting system is longer, is generally more than the 300mm.This length influences operation on the one hand, has potential safety hazard on the other hand.
Summary of the invention
The utility model provides a kind of low cost, stress is big, supporting is firm mining prestressed anchor rod support system for solving the technical problem that exists in the known technology.
The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is:
Mining prestressed anchor rod support system comprises the body of rod, pallet and ground tackle, and the described body of rod is made of interior anchor section, free section and revealed section, and it is characterized in that: the described body of rod is made by the rod iron that is equipped with spiral bar outward.
The technical scheme that the utility model can also adopt is:
The revealed section length of the described body of rod is 80-100mm.
Advantage and the good effect that the utlity model has are: the utility model adopts technique scheme, has following technique effect:
1, the body of rod adopts the outer rod iron that is equipped with spiral bar to make, its yield strength and tensile strength are about 3 times of existing anchor pole, therefore the support system that is made of this body of rod, pallet and ground tackle is after anchoring, its maintenance stress is about 3 times of existing bolt support system, from the firmness that has strengthened supporting and the safety that has improved supporting.
2, this support system is compared with existing cable bolting, under the situation that keeps stress to be equal to, has reduced rolled steel dosage, has reduced cost.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Among the figure: 1, the body of rod; 2, pallet; 3, ground tackle; 4, rock mass.
The specific embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1, mining prestressed anchor rod support system comprises the body of rod 1, pallet 2 and ground tackle 3, and the described body of rod is made of interior anchor section, free section and revealed section.Concrete, interior anchor section is the part that is adhesively fixed with rock mass 4, and free section is the part that produces stress deformation when stretch-draw, and revealed section is the part that is connected with the stretch-draw jack when stretch-draw.In the accompanying drawings, the part that indicates L1 is interior anchor section, and the part that indicates L2 is free section, and the part that indicates L3 is revealed section.The described body of rod is made by the rod iron that is equipped with spiral bar outward.
In the technique scheme: the preferred 80-100mm of the protruded length of the body of rod.
The above only is the preferable example of executing of the present utility model, is not to limit practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modification, all fall into technical scope of the present utility model.
Claims (2)
1. mining prestressed anchor rod support system comprises the body of rod, pallet and ground tackle, and the described body of rod is made of interior anchor section, free section and revealed section, and it is characterized in that: the described body of rod is made by the rod iron that is equipped with spiral bar outward.
2. mining prestressed anchor rod support system according to claim 1, it is characterized in that: the revealed section length of the described body of rod is 80-100mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320090444 CN203114312U (en) | 2013-02-28 | 2013-02-28 | Supporting system of prestress anchor bar for mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320090444 CN203114312U (en) | 2013-02-28 | 2013-02-28 | Supporting system of prestress anchor bar for mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203114312U true CN203114312U (en) | 2013-08-07 |
Family
ID=48894672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320090444 Expired - Fee Related CN203114312U (en) | 2013-02-28 | 2013-02-28 | Supporting system of prestress anchor bar for mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203114312U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113897953A (en) * | 2020-07-06 | 2022-01-07 | 中国电建集团华东勘测设计研究院有限公司 | Prestressed steel bar structure for supporting rock wall crane beam of underground workshop |
-
2013
- 2013-02-28 CN CN 201320090444 patent/CN203114312U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113897953A (en) * | 2020-07-06 | 2022-01-07 | 中国电建集团华东勘测设计研究院有限公司 | Prestressed steel bar structure for supporting rock wall crane beam of underground workshop |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TIANJIN SILVERY DRAGON PRESTRESSED MATERIALS CO., Effective date: 20140107 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140107 Address after: 300385 Xinghua nine branch road, Xiqing Development Zone, Xiqing District, Tianjin, 11 Patentee after: Tianjin Zhenhua Prestressing Technology Co., LTD. Patentee after: Tianjin Silvery Dragon Prestressed Materials Co., Ltd. Address before: 300385 Xinghua nine branch road, Xiqing Development Zone, Xiqing District, Tianjin, 11 Patentee before: Tianjin Zhenhua Prestressing Technology Co., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20210228 |