CN107313794A - A kind of shell extrusion friction anchor pole that rises for roadway support - Google Patents
A kind of shell extrusion friction anchor pole that rises for roadway support Download PDFInfo
- Publication number
- CN107313794A CN107313794A CN201710558476.0A CN201710558476A CN107313794A CN 107313794 A CN107313794 A CN 107313794A CN 201710558476 A CN201710558476 A CN 201710558476A CN 107313794 A CN107313794 A CN 107313794A
- Authority
- CN
- China
- Prior art keywords
- anchor pole
- swelling agent
- hollow lever
- rises
- flexible pipe
- 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.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
- E21D20/021—Grouting with inorganic components, e.g. cement
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0093—Accessories
Abstract
A kind of shell extrusion friction anchor pole that rises for roadway support is to be connected and composed by anchor pole front end hollow lever by branch sleeve with solid anchor pole；The plastic flexible pipe of bottom lock, and the injection swelling agent rear enclosed in plastic flexible pipe are arranged with the hollow lever of the anchor pole front end；In the anchor pole front end, the side of hollow lever is respectively arranged with 12 opening steel discs, after the extruding of inflated agent, constitutes the expansion shell type anchoring structure of an outwardly flared state.The present invention is inserted in anchor pole front end hollow lever by stirring in advance after swelling agent and injected plastic flexible pipe, effectively fill the gap between anchor pole and drilling, improve anchoring quality, the expansion of the side steel disc of anchor pole front end hollow lever simultaneously, it further increasing the frictional force between anchor pole and swelling agent, working procedure is simplified, efficiency of construction is improved.
Description
Technical field
The present invention relates to a kind of shell extrusion friction anchor pole that rises for roadway support, particularly it is a kind of be used for mine it is aqueous compared with
Roadway support is risen shell extrusion friction anchor pole in many solid rocks.
Background technology
Tunnel is under mining in soft rock mining and high stress overlaying state, and supporting gets up very difficult, and anchor pole is among Modern coal mines
The element of roadway support, is a kind of active support simple in construction, and it can keep the stabilization of country rock to greatest extent
Property and integrality, while having easy construction, efficiency high, are conducive to accelerating construction progress, the characteristics of cost-effective.Conventional anchor
Mortar need to be injected, anchor pole is inserted into, nut is re-tightened, and checks prestressing force, some resin explosive roll anchor poles then use and are first put into tree
Fat powder stick, is inserted into anchor rod stirring.
The anchorage technology of existing anchor pole needs first to inject mortar, is inserted into anchor pole, re-tightens nut, and check prestressing force；
And powder stick anchor pole is inserted into anchor pole then using resin explosive roll is first put into, resin solidification is treated in stirring, then carries out the works such as top nut pretension
Sequence, these anchor pole working method operating times are long, and process is numerous and diverse, is an impediment to construction speed, therefore, for the desirable of anchor pole
Anchor force can be quickly formed to install anchor pole, rock mass deformation is controlled, while construction is simple, in the ambient stress and work that underground is complicated
There can be stronger adaptability under journey execution conditions.
The content of the invention
In view of the above-mentioned problems, the present invention provides a kind of shell extrusion friction anchor pole that rises for roadway support, before the anchor pole is
Hollow, the middle plastic flexible pipe structure for inserting prepackage swelling agent in end, so as to simplify construction, eliminates grouting stirring process, together
When in down-hole drilling in the case of many water, this swelling agent can effectively absorb moisture, not but not reduce anchor force, on the contrary can
Increase reaction effect, volumetric expansion more acutely, the frictional force between the country rock of surrounding can strengthen therewith.
To achieve the above object, the technical solution adopted by the present invention is as follows.
A kind of shell extrusion friction anchor pole that rises for roadway support, including anchor pole front end hollow lever, plastic flexible pipe, expansion
Agent, branch sleeve, solid anchor pole, pallet and hex nut；It is characterized in that：The anchor pole is by anchor pole front end hollow stem
Body is connected and composed by the branch sleeve with the solid anchor pole；
Anchor pole front end hollow lever it is hollow in be arranged with the plastic flexible pipe of bottom lock, and inject swollen in plastic flexible pipe
Swollen dose of rear enclosed；
The lateral surface of anchor pole front end hollow lever is respectively equipped with the steel disc of 12 openings, and the steel disc is squeezed in inflated agent
After pressure, the expansion shell type anchoring structure of an outwardly flared state is constituted；
The composition and its content of the swelling agent are every 100g by CaO 90g, MgO 2g, SiO2 3g、Al2O3 3g and Fe2O3 2g
Constitute, and the swelling agent thus constituted is mixed per 70g with 30g water, stirs into slurry.
In the above-mentioned technical solutions, the swelling agent is that the industrial soda that weight is gross weight 1% is added in whipping process.
In the above-mentioned technical solutions, after the swelling agent reacts, under unconfined state, volume is increased to substance
Long-pending 2 times, in the state of Constrained, volume is increased to 1.5 times of original volume.
A kind of technical scheme of above-mentioned shell extrusion friction anchor pole that rises for roadway support, compared with prior art beneficial
Effect is：The present invention will be placed in the hollow lever of anchor pole front end by stirring swelling agent in advance after expansion agent injected plastic flexible pipe,
Reaction increase volume, is effectively filled with the gap between anchor pole and drilling after ten minutes, is compacted by swelling agent behind gap
Frictional force, improves anchoring quality；Simultaneously anchor pole front end hollow stem side steel disc expansion, further increasing anchor pole with it is swollen
Frictional force between swollen dose, and working procedure is simplified, improve efficiency of construction.
Brief description of the drawings
Fig. 1 is the structural representation that the anchor pole front end hollow lever steel disc of shell extrusion friction anchor pole is not switched on that rises.
Fig. 2 be rise shell extrusion friction anchor pole anchor pole front end hollow lever steel disc open after structural representation.
Fig. 3 is the solid anchor structure schematic diagram of shell extrusion friction anchor pole of rising.
Fig. 4 is branch sleeve structural representation.
Fig. 5 is the left view structure chart of branch sleeve structural representation.
Fig. 6 is the shell extrusion friction anchor bolt construction structural representation that rises.
Fig. 7 is the cross-sectional view of shell extrusion friction anchor pole of rising.
In figure：1：Anchor pole front end hollow lever；2：Anchor pole front end hollow lever tailing screw flight；3：Swelling agent；4：Steel disc；5：
Branch sleeve；6：Internal thread；7：Solid rock bolt head screw thread；8：Solid anchor pole；9：Solid anchor pole tailing screw flight；10：Top rock
Layer；11：Old top；12：Directly push up；13：Pallet；14：Pad；15：Hex nut；16：Plastic flexible pipe.
Embodiment
In order that the purpose of the present invention, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing to the present invention's
Technical scheme is further illustrated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
The shell extrusion friction anchor pole that rises as shown in Figure 1, including anchor pole front end hollow lever 1 and expansible steel disc 4, it is described
Anchor pole front end hollow lever 1 be hollow body of rod, there are 12 opening steel discs 4 wherein body of rod side respectively, can be used for
Swelling agent 3 expands spilling in the body of rod and used, in addition this 12 opening steel discs 4 inflated agent extruding after, formed one to
The state opened outside, forms the form of expansion shell type anchoring.Wherein hollow lever afterbody in anchor pole front end sets connection external screw thread 2,
The external screw thread 7 of the solid body of rod 8 is connected by the screw thread 6 inside branch sleeve 5.
The swelling agent 3 being stirred is circulated into after plastic flexible pipe 16 and is put into anchor pole front end hollow lever 1, when swelling agent 3
Start reaction, when outwards expanding, the passive open of steel disc 4 supports anchor pole front end hollow lever 1, prevented in anchor pole front end automatically
The empty body of rod 1 is moved.
The composition and its content of the swelling agent 3 press CaO 90g, MgO 2g, SiO per 100g2 3g、Al2O3 3g and Fe2O3
2g is constituted, and the swelling agent 3 thus constituted is mixed per 70g with 30g water, stirs into slurry.With mechanical or manual（Will with hand stirring
Wear rubber gloves）The even slurry with mobility is stirred into, it is ensured that swelling agent 3 is completely dissolved in water, if swelling agent 3 and water
Reaction speed is too fast, and the industrial soda that need to add weight no more than gross weight 1% suppresses reaction rate.
After being reacted due to swelling agent 3,2 times or so of original volume, Constrained are increased in unconfined condition lower volume
In the case of about 1.5 times of original volume, therefore the frictional force being consequently formed provides the vertical constraint of anchor pole.
The anchor pole front end hollow lever 1 filled is put into drilling, branch sleeve 5 is installed, by branch sleeve 5
The screw thread 6 in portion connects the external screw thread 7 of the solid body of rod 8.
Anchor pole is headed into foot of hole, lower end is fixed by installing pallet 13, pad 14 and hex nut 15.
Claims (3)
1. a kind of shell extrusion friction anchor pole that rises for roadway support, including anchor pole front end hollow lever, plastic flexible pipe, expansion
Agent, branch sleeve, solid anchor pole, pallet and hex nut；It is characterized in that：The anchor pole is by anchor pole front end hollow stem
Body（1）Pass through the branch sleeve（5）With the solid anchor pole（8）Connect and compose；
Anchor pole front end hollow lever（1）It is hollow in be arranged with the plastic flexible pipe of bottom lock（16）, and in plastic flexible pipe
（16）Middle injection swelling agent（3）Rear enclosed；
Anchor pole front end hollow lever（1）Lateral surface be respectively equipped with 12 opening steel discs（4）, the steel disc（4）
Inflated agent（3）After extruding, the expansion shell type anchoring structure of an outwardly flared state is constituted；
The swelling agent（3）Composition and its content be every 100g by CaO 90g, MgO 2g, SiO2 3g、Al2O3 3g and Fe2O3
2g is constituted, and the swelling agent thus constituted（3）Mixed per 70g with 30g water, stir into slurry.
2. it is used for the shell extrusion friction anchor pole that rises of roadway support as claimed in claim 1, it is characterised in that：The swelling agent
（3）It is that the industrial soda that weight is gross weight 1% is added in whipping process.
3. it is used for the shell extrusion friction anchor pole that rises of roadway support as claimed in claim 1, it is characterised in that：The swelling agent
（3）After reacting, under unconfined state, volume is increased to 2 times of original volume, in the state of Constrained, and volume increases
Greatly 1.5 times of original volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710558476.0A CN107313794A (en) | 2017-07-10 | 2017-07-10 | A kind of shell extrusion friction anchor pole that rises for roadway support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710558476.0A CN107313794A (en) | 2017-07-10 | 2017-07-10 | A kind of shell extrusion friction anchor pole that rises for roadway support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107313794A true CN107313794A (en) | 2017-11-03 |
Family
ID=60178246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710558476.0A Pending CN107313794A (en) | 2017-07-10 | 2017-07-10 | A kind of shell extrusion friction anchor pole that rises for roadway support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107313794A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905224A (en) * | 2017-11-19 | 2018-04-13 | 三峡大学 | It is a kind of to expand head in perforate steel pipe to improve the anchor structure of anti-pulling of anchor bar and construction method using expanding cement |
| CN108301410A (en) * | 2018-01-24 | 2018-07-20 | 三峡大学 | Different bulking agent levels lower bolt ultimate pullout capacity design parameter optimization design methods in a kind of Rock And Soil |
| CN109681253A (en) * | 2019-02-27 | 2019-04-26 | 太原理工大学 | A kind of underground deep wall rock supporting novel anchor rod |
| CN112879058A (en) * | 2021-01-21 | 2021-06-01 | 北京科技大学 | Radial internal expansion resistance-increasing anchor rod cable supporting device and method |
| CN114892519A (en) * | 2022-04-20 | 2022-08-12 | 三峡大学 | Suspension bridge anchor cable structure and construction method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57165521A (en) * | 1981-04-01 | 1982-10-12 | Sekisui Prefab Homes Ltd | Reinforcing work for retaining wall |
| DE3138610C2 (en) * | 1981-09-29 | 1984-10-18 | Bergwerksverband Gmbh, 4300 Essen | Device for durable fastening of objects in boreholes |
| CN201396179Y (en) * | 2009-03-31 | 2010-02-03 | 中国矿业大学 | Back-resistant self-grout stopping grouting anchor |
| CN102704936A (en) * | 2012-06-13 | 2012-10-03 | 太原理工大学 | Caving control method for fully mechanized mining face tip mining road way top plate |
| CN205036397U (en) * | 2015-10-15 | 2016-02-17 | 山东科技大学 | But recycle cavity cling compound slip casting stock |
| CN205894069U (en) * | 2016-07-28 | 2017-01-18 | 山东科技大学 | Enlarged footing resistance to plucking stock |
-
2017
- 2017-07-10 CN CN201710558476.0A patent/CN107313794A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57165521A (en) * | 1981-04-01 | 1982-10-12 | Sekisui Prefab Homes Ltd | Reinforcing work for retaining wall |
| DE3138610C2 (en) * | 1981-09-29 | 1984-10-18 | Bergwerksverband Gmbh, 4300 Essen | Device for durable fastening of objects in boreholes |
| CN201396179Y (en) * | 2009-03-31 | 2010-02-03 | 中国矿业大学 | Back-resistant self-grout stopping grouting anchor |
| CN102704936A (en) * | 2012-06-13 | 2012-10-03 | 太原理工大学 | Caving control method for fully mechanized mining face tip mining road way top plate |
| CN205036397U (en) * | 2015-10-15 | 2016-02-17 | 山东科技大学 | But recycle cavity cling compound slip casting stock |
| CN205894069U (en) * | 2016-07-28 | 2017-01-18 | 山东科技大学 | Enlarged footing resistance to plucking stock |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905224A (en) * | 2017-11-19 | 2018-04-13 | 三峡大学 | It is a kind of to expand head in perforate steel pipe to improve the anchor structure of anti-pulling of anchor bar and construction method using expanding cement |
| CN107905224B (en) * | 2017-11-19 | 2020-10-02 | 三峡大学 | Anchoring structure for improving anti-pulling force of anchor rod by expanding head of expansion cement in perforated steel pipe and construction method |
| CN108301410A (en) * | 2018-01-24 | 2018-07-20 | 三峡大学 | Different bulking agent levels lower bolt ultimate pullout capacity design parameter optimization design methods in a kind of Rock And Soil |
| CN108301410B (en) * | 2018-01-24 | 2019-09-24 | 三峡大学 | Different bulking agent levels lower bolt ultimate pullout capacity design parameter optimization design methods in a kind of Rock And Soil |
| CN109681253A (en) * | 2019-02-27 | 2019-04-26 | 太原理工大学 | A kind of underground deep wall rock supporting novel anchor rod |
| CN112879058A (en) * | 2021-01-21 | 2021-06-01 | 北京科技大学 | Radial internal expansion resistance-increasing anchor rod cable supporting device and method |
| CN114892519A (en) * | 2022-04-20 | 2022-08-12 | 三峡大学 | Suspension bridge anchor cable structure and construction method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
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Application publication date: 20171103 |