CN108049903A - Shearing resistance-large deformation tension and compression combination fried dough twist type anchor pole - Google Patents
Shearing resistance-large deformation tension and compression combination fried dough twist type anchor pole Download PDFInfo
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- CN108049903A CN108049903A CN201810116393.0A CN201810116393A CN108049903A CN 108049903 A CN108049903 A CN 108049903A CN 201810116393 A CN201810116393 A CN 201810116393A CN 108049903 A CN108049903 A CN 108049903A
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- rod
- fried dough
- dough twist
- anchor pole
- tension
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- 230000006835 compression Effects 0.000 title claims abstract description 23
- 238000007906 compression Methods 0.000 title claims abstract description 23
- 238000010008 shearing Methods 0.000 title claims abstract description 19
- 230000008093 supporting effect Effects 0.000 claims abstract description 28
- 230000010354 integration Effects 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 17
- 239000003245 coal Substances 0.000 abstract description 7
- 230000008859 change Effects 0.000 abstract description 3
- 238000004873 anchoring Methods 0.000 description 12
- 239000003795 chemical substances by application Substances 0.000 description 10
- 238000009826 distribution Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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 OR ROCK 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses shearing resistance large deformation tension and compression to combine fried dough twist type anchor pole, including fried dough twist the type body of rod A, B, integrates screw thread, loading plate, pallet, nut, PVC plastic set.Its stroke is big, shear resistance is strong, stress performance is good, pulling force concentrated, pressure concentrated, pulling force decentralized, pressure dispersing type, the combined function of tension and compression can be achieved, anchor pole failure phenomenon occurs after supporting caused by reduce stress concentration, for coal mine roadway surrounding rock supporting, roadway surrounding rock stablizes relatively in holding service life.The present invention is applied widely, can thoroughly change the support form of roadway surrounding rock anchor pole, significantly improves supporting effect of roadway, increases safe coefficient, efficiently creates conditions for mine safety.
Description
Technical field
The present invention relates to a kind of novel anchor rods, are related to engineering support utensil, anchor especially used in coal mine roadway surrounding rock supporting
Bar.
Background technology
In recent years, mineral industry is with the increase of mining depth, and strata behaviors is particularly evident, and tunnel is given birth to as mine
The chief component of production system is responsible for the vital task of the normal production and transport of entire mine, ventilation and pedestrian.So coal
Roadway surrounding rock in the entire service life of ore deposit is stablized relatively for ensureing that safe and efficient production is of great significance.For this purpose, using
Bolt support technology can significantly improve supporting effect of roadway, suspension roof support be by country rock inside the body of rod, change country rock sheet
The mechanical state of body improves the intensity of country rock, so as to form a carrier ring completely stablized in the surrounding rock body of tunnel, with enclosing
Rock collective effect achievees the purpose that safeguard tunnel.Existing anchor pole development shows as variation at present, includes pulling force concentrated, pressure
A variety of patterns such as power concentrated, pulling force decentralized, pressure dispersing type, tension and compression mixed type, the anchor pole of these patterns is in Bracing Process
In its mechanical characteristic will difference.Pulling force concentrated anchor pole is generating stress concentration, pressure concentrated anchor at free segment
Bar is generating stress concentration at loading plate, and pulling force decentralized, dispersed pressure anchor stress distribution are than more uniform；Pulling force
Decentralized anchor pole is higher compared with pulling force concentrated anchor pole bearing capacity, and the bearing capacity of dispersed pressure anchor and pulling force decentralized
Anchor pole compares the raising for having bigger.But coal mine anchor rod is all tension type anchor pole at present, is by anchor pole-Anchor Agent-country rock
Between cohesive force anchor force is provided, tunnel is in anchorage effect, after rockbolt stress, load by with anchoring
The cementation of agent passes to Anchor Agent, the mutual shear action between Anchor Agent and anchor pole so that Anchor Agent is in tension
State, and the anchoring section that end is stretched close to anchor pole forms shear stress concentration phenomenon, be anchored at end gradually failure so as to anchoring
Deep is shifted, final to influence anchoring support effect, especially deep roadway with large deformation, tradition so as to cause anchoring global failure
Suspension roof support be increasingly difficult in adapt to roadway deformation requirement.On the other hand, traditional tension type anchor pole, anchor pole and Anchor Agent glue
It ties together, anchor pole shearing resistance deformation energy force difference, and bearing capacity ratio is relatively fixed, anchor pole is easily cut under the action of shearing.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of stroke is big, shear resistance is strong, the good fried dough twist of stress performance
Type anchor pole is, it can be achieved that pulling force concentrated, pressure concentrated, pulling force decentralized, pressure dispersing type, the combined function of tension and compression, to subtract
Anchor pole failure phenomenon occurs after supporting caused by small stress concentration, for coal mine roadway surrounding rock supporting, keeps lane in service life
Road country rock is stablized relatively.
Technical scheme is as follows：
Shearing resistance-large deformation tension and compression combination fried dough twist type anchor pole, including fried dough twist the type body of rod A, B, integrates screw thread, PVC plastic set, taper
Supporting body, pallet, nut.
The outer section of the fried dough twist type body of rod A, B is integrated screw thread by one and is drawn, integrate be cased on screw thread pallet and with screw thread kissing
The nut of conjunction, fried dough twist type body of rod endpiece are connected to taper supporting body.
The present invention realizes following 5 kinds of supporting types by controlling the length of the fried dough twist type body of rod A, B and whether covering PVC plastic set
Formula.
Pulling force concentrated structure is isometric fried dough twist the type body of rod A, B, due to the features of shape of fried dough twist type anchor pole itself, stroke
Greatly, the stretch capability and shear resistance of such anchor pole are improved.
Pressure concentrated structure is isometric fried dough twist the type body of rod A, B, and PVC plastic set isometric therewith is cased on the body of rod A, B, due to
The features of shape of fried dough twist type anchor pole itself, stroke is big, improves the stretch capability and shear resistance of such anchor pole.
Pulling force decentralized architecture is non-isometric fried dough twist the type body of rod A, B, and body of rod B is slightly longer than body of rod A, be cased on body of rod B with
PVC plastic set isometric body of rod A, so that anchoring section shearing stress distribution than more uniform, improves anchoring property；Simultaneously because fried dough twist type
The features of shape of anchor pole itself, stroke is big, also improves the stretch capability and shear resistance of such anchor pole.
Pressure dispersing type structure is non-isometric fried dough twist the type body of rod A, B, and body of rod B is slightly longer than body of rod A, distinguishes on the body of rod A, B
PVC plastic set is cased with, and each length and itself body of rod are isometric, so that anchoring section shearing stress distribution, than more uniform, raising anchors
Performance；Simultaneously because the features of shape of fried dough twist type anchor pole itself, stroke is big, improves the stretch capability of such anchor pole and resists
Cut ability.
Tension and compression combined structure is non-isometric fried dough twist the type body of rod A, B, and body of rod B is slightly longer than body of rod A, be cased on body of rod B with
Itself isometric PVC plastic set, body of rod B realize pressure-type supporting, and body of rod A realizes tension type supporting, due to the pressure-type branch of body of rod B
Shield, Anchor Agent are in pressured state, so that anchoring section shearing stress distribution uniformity is improved outside, further enhance anchoring
Performance；Simultaneously because the features of shape of fried dough twist type anchor pole itself, stroke is big, improves the stretch capability of such anchor pole and resists
Cut ability.
After fried dough twist type body of rod A, B tension of the present invention, each other by it is engaged together, form the bar hitch of similar anchor cable
Structure further improves the tensile strength of anchor pole.That is, during supporting stand under load, intensity, bearing capacity and the drawing of anchor pole
Increase progressively with load is adapted by the amount of stretching.
The invention has the advantages that：
(1) shearing resistance-large deformation tension and compression combination fried dough twist type anchor pole, stroke is big, bearing capacity, shear resistance are strong, is used for
Coal mine roadway surrounding rock supporting, keep service life in roadway surrounding rock relatively stablize.
(2) during supporting stand under load, intensity, bearing capacity and the amount of tension of the anchor pole are by the increase phase progressively with load
It adapts to, further improves the stability of country rock.
(3) it is applied widely, it can thoroughly change the support form of roadway surrounding rock anchor pole, significantly improve supporting effect of roadway,
Increase safe coefficient, create conditions for mine high-yield and high-efficiency.
Description of the drawings
Fig. 1-5 be respectively shearing resistance of the present invention-large deformation tension and compression combine fried dough twist type axis force of anchor concentrated, pressure concentrated,
Pulling force decentralized, pressure dispersing type, the combined 5 kinds of type structure schematic diagrames of tension and compression；
In Fig. 1：1- bodies of rod A, the 2- body of rod B, 3- integrate screw thread, 4- taper supporting bodies, 5- pallets, 6- nuts
In Fig. 2：1- bodies of rod A, the 2- body of rod B, 3- integrate screw thread, 4- taper supporting bodies, 5- pallets, 6- nuts, 7-PVC mould sets
In Fig. 3：1- bodies of rod A, the 2- body of rod B, 3- integrate screw thread, 4- taper supporting bodies, 5- pallets, 6- nuts, 7-PVC mould sets
In Fig. 4：1- bodies of rod A, the 2- body of rod B, 3- integrate screw thread, 4- taper supporting bodies, 5- pallets, 6- nuts, 7-PVC mould sets
In Fig. 5：1- bodies of rod A, the 2- body of rod B, 3- integrate screw thread, 4- taper supporting bodies, 5- pallets, 6- nuts, 7-PVC mould sets
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment belongs to the scope of protection of the invention.
Shearing resistance-large deformation tension and compression combination fried dough twist type anchor pole, including fried dough twist type body of rod A (1), B (2), integrates screw thread (3), cone
Shape supporting body (4), pallet (5), nut (6), PVC plastic set (7).
It by taking tension and compression are combined as an example, drills in portion of coal mine roadway side, Anchor Agent is sent into drilling bottom, then should
Rockbolt installation enters in drilling, set top tray (5), applies prestressing force by nutting (6).The slightly long fried dough twist type body of rod B (2) endpiece
Taper supporting body (4) directly contacted with Anchor Agent, Anchor Agent can improve tension type anchor pole anchor in the case of compression at this time
The adhesive property of liquid/solid interface.PVC plastic set (7) is cased on fried dough twist type body of rod B, length is isometric with the body of rod, so that anchoring section is cut
Stress distribution is uniformly improved and improves, and improves the bearing capacity of anchor pole, and pressure dissipation function is realized with this；Shorter fried dough twist type
Anchor pole A (1) realizes tension type supporting, and the taper supporting body (4) of endpiece is directly contacted with Anchor Agent in addition, further improves anchor
Solidity energy；Summary realizes that tension and compression are combined, and improves the shear resistance of anchoring section；Simultaneously because the shape of fried dough twist type anchor pole itself
Shape feature, stroke is big, improves the stretch capability and shear resistance of such anchor pole.
After fried dough twist type body of rod A (1), B (2) tension, each other by it is engaged together, form the bar hitch of similar anchor cable
Structure further improves the tensile strength of anchor pole.That is, during supporting stand under load, the intensity and bearing capacity of anchor pole will
Progressively the increase with load is adapted.
Figure of description is only used as the structure of product, principle schematic, and actual product structure snd size are designed with inventor
It produces subject to drawing.
Above embodiment be only the preferred embodiment of the present invention is described, not to the scope of the present invention into
Row limits, and on the premise of design spirit of the present invention is not departed from, this field ordinary skill technical staff is to the technical side of the present invention
The various modifications and improvement that case is made should all be fallen into the protection domain that claims of the present invention determines.The model of the present invention
It encloses and is indicated by the appended claims rather than the foregoing description, it is intended that meaning and model in the equivalent requirements of the claims will be fallen
All changes in enclosing are included within the present invention, and any reference numeral in claim should not be considered as to the involved power of limitation
Profit requirement.
Claims (7)
1. shearing resistance-large deformation tension and compression combination fried dough twist type anchor pole, including fried dough twist type body of rod A (1), B (2), integrates screw thread (3), taper
Supporting body (4), pallet (5), nut (6), PVC plastic set (7).The fried dough twist type body of rod A (1), B (2) outer section are by an integration spiral shell
Line (3) is drawn, and integrates the nut (6) for being cased with pallet (5) on screw thread and matching with screw thread；By controlling fried dough twist type body of rod A
(1), the length of B (2) and PVC plastic set (7) whether is covered to realize pulling force concentrated, pressure concentrated, pulling force decentralized, pressure
Decentralized, the combined 5 kinds of supporting types of tension and compression.
2. shearing resistance according to claim 1-large deformation tension and compression combination fried dough twist type anchor pole, it is characterised in that：The pulling force collection
Medium-sized fried dough twist body of rod A (1), B (2) equal length.
3. shearing resistance according to claim 1-large deformation tension and compression combination fried dough twist type anchor pole, it is characterised in that：The pressure collection
Medium-sized fried dough twist body of rod A (1), B (2) equal length are cased with PVC plastic set (7) isometric therewith on body of rod A (1), B (2).
4. shearing resistance according to claim 1-large deformation tension and compression combination fried dough twist type anchor pole, it is characterised in that：The pulling force point
It dissipates type body of rod B (2) and is slightly longer than body of rod A (1), the PVC plastic set (7) isometric with body of rod A (1) is cased on body of rod B (2).
5. shearing resistance according to claim 1-large deformation tension and compression combination fried dough twist type anchor pole, it is characterised in that：The pressure point
Dissipate type and body of rod B (2) and be slightly longer than body of rod A (1), be cased with PVC plastic set (7) on body of rod A (1), B (2) respectively, and each length with from
The body body of rod is isometric.
6. shearing resistance according to claim 1-large deformation tension and compression combination fried dough twist type anchor pole, it is characterised in that：The body of rod B
(2) body of rod A (1) is slightly longer than, the PVC plastic set (7) isometric with itself is cased on body of rod B (2).
7. shearing resistance according to claim 1-large deformation tension and compression combination fried dough twist type anchor pole, it is characterised in that：The fried dough twist type
After body of rod A (1), B (2) tension, each other by it is engaged together, form the strut-cable structure of similar anchor cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810116393.0A CN108049903B (en) | 2018-02-06 | 2018-02-06 | Shearing-large deformation pulling-pressing combined twist anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810116393.0A CN108049903B (en) | 2018-02-06 | 2018-02-06 | Shearing-large deformation pulling-pressing combined twist anchor rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108049903A true CN108049903A (en) | 2018-05-18 |
| CN108049903B CN108049903B (en) | 2023-07-25 |
Family
ID=62125691
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810116393.0A Active CN108049903B (en) | 2018-02-06 | 2018-02-06 | Shearing-large deformation pulling-pressing combined twist anchor rod |
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| Country | Link |
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Citations (19)
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|---|---|---|---|---|
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| US5785463A (en) * | 1996-01-11 | 1998-07-28 | Jennmar Corporation | Combination cable bolt system |
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| DE20201927U1 (en) * | 2002-02-08 | 2003-06-12 | Fischer Artur Werke Gmbh | Shear connector has deformable plastic centering bush fitted on anchor shank and with external circumferential surface widening axially in one direction, and has shear force sleeve seated on anchor shank |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108049903B (en) | 2023-07-25 |
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