CN207761696U - A kind of end expansion type can connect prestressing force grouted anchor bar - Google Patents
A kind of end expansion type can connect prestressing force grouted anchor bar Download PDFInfo
- Publication number
- CN207761696U CN207761696U CN201621125208.7U CN201621125208U CN207761696U CN 207761696 U CN207761696 U CN 207761696U CN 201621125208 U CN201621125208 U CN 201621125208U CN 207761696 U CN207761696 U CN 207761696U
- Authority
- CN
- China
- Prior art keywords
- anchor
- hollow bolt
- bolt body
- expansion type
- anchor pole
- 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
Links
- 230000008878 coupling Effects 0.000 claims abstract description 11
- 238000010168 coupling process Methods 0.000 claims abstract description 11
- 238000005859 coupling reaction Methods 0.000 claims abstract description 11
- 230000002787 reinforcement Effects 0.000 claims abstract description 10
- 239000011435 rock Substances 0.000 claims abstract description 9
- 238000004873 anchoring Methods 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims description 4
- 230000008093 supporting effect Effects 0.000 abstract description 11
- 238000005065 mining Methods 0.000 abstract description 7
- 239000003245 coal Substances 0.000 abstract description 6
- 238000005728 strengthening Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- BVPWJMCABCPUQY-UHFFFAOYSA-N 4-amino-5-chloro-2-methoxy-N-[1-(phenylmethyl)-4-piperidinyl]benzamide Chemical compound COC1=CC(N)=C(Cl)C=C1C(=O)NC1CCN(CC=2C=CC=CC=2)CC1 BVPWJMCABCPUQY-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model belongs to coal mining roadway support equipment technical field, a kind of end expansion type can connect prestressing force grouted anchor bar, expansion type anchor head (1) is connected by reinforcement type coupling bar (2) in the first hollow bolt body (3) front of anchor pole front end, the first hollow bolt body (3) of anchor pole front end is connected by reinforcement type coupling bar (2) using internal thread with expansion type anchor head (1)；With branch sleeve (5) connection front end the first hollow bolt body (3) and tail end the second hollow bolt body (4) in the middle part of anchor pole；Stop grouting plug (10), backing plate (11) and third nut (12) are installed successively in the tail portion of end of anchor rod the second hollow bolt body (4), the pretightning force raising anchoring strength for increasing backing plate to rock mass by screwing third nut (12).The utility model effectively raises anchor pole in large mining depth, high stress, the supporting length of super thick rock stratum and supporting intensity, improve anchor pole geology crushed zone supporting effect.The utility model is suitable for the strengthening supporting of coal mine large-mining depth, high stress, the high strength support of super thick base object model and geology crushed zone.
Description
Technical field
The utility model belongs to coal mining Roadway Support Technology field, is related to a kind of including expansion type anchor head, middle spare anchor
End expansion type including the body of rod, branch sleeve can connect prestressing force grouted anchor bar, and it is high to be suitable for coal mine roadway prestressed anchor
Intensity supporting and lengthening suspension roof support, the especially high strength support and ground of coal mine large-mining depth, high stress, super thick base object model
The strengthening supporting of matter crushed zone.
Background technology
Currently, adopting for China's coal-mine is deep increasing, bump is apparent, and rock crushing is serious, and the geology encountered is broken
With more and more, roadway bolting support is more and more difficult.Further increased as Coal Exploitation is deep, to roadway support means and
More stringent requirements are proposed for the supporting intensity of anchor pole.Existing anchor pole is influenced by lane space, is about 1.5~2.4m, for
The blocked up rock stratum of base object model cannot play good anchoring effect, and applicant is on the basis of investigating existing anchor pole, creatively
The scheme of prestressing force grouted anchor bar can be connected by proposing end expansion type, be encountered for solving existing roadway support anchoring means
Problem.
Utility model content
The anchoring strength of existing anchor pole is inadequate, anchorage length is insufficient in order to overcome, and effective solution roadway support intensity is not
The problems such as enough, the utility model proposes a kind of end expansion types can connect prestressing force grouted anchor bar.
A kind of end expansion type can connect prestressing force grouted anchor bar, it is characterised in that：
The anchor pole include expansion type anchor head 1, reinforcement type coupling bar 2, the first hollow bolt body 3, the second hollow bolt body 4,
Branch sleeve 5, the first bolt 6, the second bolt 7, the first nut 8, the second nut 9, stop grouting plug 10, backing plate 11, third nut 12.
In the front end installation expansion type anchor head 1 and reinforcement type coupling bar 2 of the first hollow bolt body 3, expansion type anchor head 1 with
Reinforcement type coupling bar 2 is connected using internal thread；It can be connected in the middle part of prestressing force grouted anchor bar with the connection of branch sleeve 5 the in expansion type
One hollow bolt body 3 and the second hollow bolt body 4 are revolved using the first bolt 6, the second bolt 7, the first nut 8 and the second nut 9
It fastens；4 tail portion of the second hollow bolt body that prestressing force grouted anchor bar can be connected in expansion type is installed by stop grouting plug 10, backing plate successively
11 and third nut 12, pretightning force of the backing plate to rock mass is increased by tightening nut, improves anchoring strength.
The anchor pole that the utility model is proposed possessed advantage compared with other existing anchor poles is mainly reflected in following several
A aspect：
The utility model passes through such improvement, effectively raises anchor pole in large mining depth, high stress, the branch of super thick rock stratum
Protect length and supporting intensity, also effectively increase anchor pole geology crushed zone supporting effect.
The utility model solves the problems such as conventional anchor supporting length is inadequate, supporting intensity is insufficient, also overcomes by lane
Road spacial influence, in deep, rock strata support must not have to the defect of anchor cable, strong to improve deep mining roadway bolt branch
Protect the inadequate problem of length.
The first hollow bolt body 3 is connected by reinforcement type coupling bar 2 in the utility model and expansion type anchor head 1 can be effective
The bonding strength of the first hollow bolt body 3 and expansion type anchor head 1 is improved, what difficulty was extracted when also can effectively solve anchor recovering asks
Topic.
In the utility model the first hollow bolt body 3 and the second hollow bolt body 4 connected using 5 internal thread of branch sleeve,
The connection type that nut tightening is reinforced is both simple and convenient or conducive to installation and recycling.
The setting of the first hollow bolt body 3 and the second hollow bolt body 4 can effectively solve anchor hole Nei Yan in the utility model
The problems such as stone clast is more, impurity difficulty drains, while 4 more traditional anchor of the first hollow bolt 3 and the second hollow bolt body after connection
The length of bar increases 1 times, greatly increase the anchorage length of anchor pole, and effective solution conventional anchor anchorage length is inadequate
The problem of.
Description of the drawings
Attached drawing 1：The overall structure diagram of the utility model；
Attached drawing 2：The whole diagrammatic cross-section of the utility model；
Attached drawing 3：The partial schematic diagram of the utility model；
Attached drawing 4：The partial schematic diagram of the utility model；
Attached drawing 5：The expansion type anchor head schematic diagram of the utility model；
Symbol description in figure：1-expansion type anchor head；2-reinforcement type coupling bars；3-the first hollow bolt body；4-the second
Hollow bolt body；5-branch sleeves；6-the first bolt；7-the second bolt；8-the first nut；9-the second nut；10—
Stop grouting plug；11-backing plates；12-third nuts.
Specific implementation mode
In conjunction with attached drawing 1-4, the specific implementation process of the utility model anchor pole is as described below：
It includes expansion type anchor head 1, reinforcement type coupling bar 2, first that a kind of end expansion type, which can connect prestressing force grouted anchor bar,
Hollow bolt body 3, the second hollow bolt body 4, branch sleeve 5, the first bolt 6, the second bolt 7, the first nut 8, the second nut
9, stop grouting plug 10, backing plate 11, third nut 12.
Expansion type anchor head 1 and the first hollow bolt body 3 are connected by reinforcement type coupling bar 2 using internal thread in the utility model
The mode connect connects.
In the utility model the first hollow bolt body 3 and the second hollow bolt body 4 by branch sleeve 5 and the first bolt 6,
Second bolt 7, the first nut 8, the connection of the second nut 9, the first hollow bolt body 3 and the second hollow bolt body 4 pass through connector sleeve
Cylinder 5 is connected using internal thread, is reinforced in such a way that bolt, nut are connected.
Roof-bolter can directly be drilled deeply by the first hollow bolt body 3 after connection and the second hollow bolt body 4, be led to
Cross anchor bar body inner hollow hole indentation high pressure it is distinguished and admirable, by anchor hole clast and impurity all drain, then installation expansion
It is pierced again after formula anchor head 1.
It can be connected after prestressing force grouted anchor bar pierces after expansion type, install in 4 end of the second hollow bolt body and only starch successively
Plug 10, backing plate 11 and third nut 12 increase the pretightning force between backing plate and rock mass by nut tightening backing plate.
Claims (1)
1. a kind of end expansion type can connect prestressing force grouted anchor bar, it is characterised in that：The first hollow bolt in anchor pole front end
Body (3) front connects expansion type anchor head (1), the first hollow bolt body (3) of anchor pole front end and swollen by reinforcement type coupling bar (2)
Expanding anchor head (1) is connected by reinforcement type coupling bar (2) using internal thread；In the middle part of anchor pole front end is connected with branch sleeve (5)
First hollow bolt body (3) and tail end the second hollow bolt body (4)；The tail portion of end of anchor rod the second hollow bolt body (4) according to
Secondary installation stop grouting plug (10), backing plate (11) and third nut (12) increase backing plate to rock mass by screwing third nut (12)
Pretightning force improves anchoring strength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621125208.7U CN207761696U (en) | 2016-10-14 | 2016-10-14 | A kind of end expansion type can connect prestressing force grouted anchor bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621125208.7U CN207761696U (en) | 2016-10-14 | 2016-10-14 | A kind of end expansion type can connect prestressing force grouted anchor bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207761696U true CN207761696U (en) | 2018-08-24 |
Family
ID=63177697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621125208.7U Expired - Fee Related CN207761696U (en) | 2016-10-14 | 2016-10-14 | A kind of end expansion type can connect prestressing force grouted anchor bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207761696U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107326A (en) * | 2019-06-26 | 2019-08-09 | 张亚歌 | A kind of flexible roof bolt |
| CN110670599A (en) * | 2019-09-09 | 2020-01-10 | 中冶交通建设集团有限公司 | Hollow grouting prestressed anchor rod and construction method thereof |
| CN111706374A (en) * | 2020-06-30 | 2020-09-25 | 河海大学 | Anchor head expansion resistance-increasing type drainable multistage yielding anchor rod |
| CN112983519A (en) * | 2021-03-29 | 2021-06-18 | 河南理工大学 | High-pretightening-force anchor rod for actively and quickly realizing three-dimensional stress balance and anchoring method thereof |
| CN114810166A (en) * | 2022-05-14 | 2022-07-29 | 陕西煤业股份有限公司 | Temporary support system for roof bolt of coal mine roadway and support method thereof |
-
2016
- 2016-10-14 CN CN201621125208.7U patent/CN207761696U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107326A (en) * | 2019-06-26 | 2019-08-09 | 张亚歌 | A kind of flexible roof bolt |
| CN110670599A (en) * | 2019-09-09 | 2020-01-10 | 中冶交通建设集团有限公司 | Hollow grouting prestressed anchor rod and construction method thereof |
| CN111706374A (en) * | 2020-06-30 | 2020-09-25 | 河海大学 | Anchor head expansion resistance-increasing type drainable multistage yielding anchor rod |
| CN112983519A (en) * | 2021-03-29 | 2021-06-18 | 河南理工大学 | High-pretightening-force anchor rod for actively and quickly realizing three-dimensional stress balance and anchoring method thereof |
| CN112983519B (en) * | 2021-03-29 | 2023-08-22 | 河南理工大学 | High-pretightening-force anchor rod capable of actively and rapidly realizing three-dimensional stress balance and anchoring method thereof |
| CN114810166A (en) * | 2022-05-14 | 2022-07-29 | 陕西煤业股份有限公司 | Temporary support system for roof bolt of coal mine roadway and support method thereof |
| CN114810166B (en) * | 2022-05-14 | 2024-04-09 | 陕西煤业股份有限公司 | Temporary support system for roof anchor rod of coal mine tunnel and support method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20180824 Termination date: 20191014 |