CN105178995B - A kind of multiple grouted anchor bar of side bare weight - Google Patents
A kind of multiple grouted anchor bar of side bare weight Download PDFInfo
- Publication number
- CN105178995B CN105178995B CN201510674920.6A CN201510674920A CN105178995B CN 105178995 B CN105178995 B CN 105178995B CN 201510674920 A CN201510674920 A CN 201510674920A CN 105178995 B CN105178995 B CN 105178995B
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- China
- Prior art keywords
- repeatable
- muscle material
- grouting pipe
- slip casting
- locating support
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Abstract
The invention discloses a kind of multiple grouted anchor bar of side bare weight, include the locating support of the corresponding arrangement of some upper-lower positions, locating support is provided with muscle material groove and repeatable slip casting tube seat, repeatable slip casting tube seat is located at the side of muscle material groove, muscle material is placed with muscle material groove, repeatable slip casting tube seat is placed with repeatable Grouting Pipe, repeats Grouting Pipe bottom end seal, pulp aperture is which is provided with, pulp aperture is unidirectional slurry outlet.The beneficial effects of the invention are as follows repeatedly slip casting is implemented to breaking surrounding rock in good time by repeatable slurry injection technique, crack in country rock is filled, improves the globality and intensity of breaking surrounding rock, while maintain anchor pole intensity in itself and impetus, play its carrying effect.
Description
Technical field
The invention belongs to civil engineering equipment technical field, is related to a kind of multiple grouted anchor bar of side bare weight.
Background technology
Anchor pole（Including anchor cable）It is a kind of very extensive Rock And Soil reinforcement technique of application, is obtained in mine support universal
Using.Hollow grouting anchor（Including hollow grouting cable anchor）So that its valency is low, pulling capacity is high, and in mine, especially in colliery branch
It is applied in shield, and shows its good effect.But current hollow grouting anchor can only slip casting once, Wu Fa
Its slip casting function is recycled to carry out surrounding rock consolidation and the impetus reparation or reinforcement of anchor pole after roadway surrounding rock is broken；Simultaneously because belonging to fixed
Product processed, design flexibility are limited.Because deep tunnel has the characteristics of continuing large deformation, the result of tunnel continuous deformation will
Cause rock crusher, and broken anchor rod drawing bearing capacity, the especially rock crusher of reducing of country rock develops into anchor pole and puted forth effort
When at point, anchor pole will fail.Colliery km depth lane support engineering practice have shown that, in the tunnel of hollow grouting cable anchor supporting one month
Still there is 500mm large deformation, country rock is crushed and developed to deep again, but because the slip casting function of hollow slurry anchor cable can not be again
Play, Drift stability is affected or threatened.
The content of the invention
It is an object of the invention to provide a kind of multiple grouted anchor bar of side bare weight, solving existing hollow grouting anchor can only
Slip casting once, can not recycle the problem of progress surrounding rock consolidation of its slip casting function is with its impetus reinforcement after country rock crushes again.
The technical solution adopted in the present invention is to include the locating support of the corresponding arrangement of some upper-lower positions, on locating support
Provided with muscle material groove and repeatable slip casting tube seat, repeatable slip casting tube seat is located at the side of muscle material groove, and muscle material is placed with muscle material groove,
Repeatable slip casting tube seat is placed with repeatable Grouting Pipe, and repeatable Grouting Pipe is provided with pulp aperture, and pulp aperture is unidirectionally to go out
Starch hole.
Further, the repeatable Grouting Pipe is the Grouting Pipe compared with hard elastic PVC material；The muscle material groove sets one
It is or multiple；The muscle material is reinforcing bar, steel hinge line.
Further, the repeatable Grouting Pipe bottom end seal, and set at each locating support position correspondence position 3 circle Ф 6 ~
8mm pulp aperture, spacing 5cm is enclosed, often circle is evenly arranged 3 ~ 4 pulp apertures.
Further, the muscle material, if reinforcing bar, is then locked using clamp nut；If steel hinge line, then using special anchor cable
Lockset carries out tensioning fixation.To the three small anchor poles as current colliery（Including anchor cable）, then the diameter of muscle material（Steel hinge line is public affairs
Claim diameter）It is preferably less than normal and increase its radical.
Further, the locating support spacing 1m.
Further, 2 ~ 3 layers of rubber sleave of covering outside the pulp aperture of the repeatable Grouting Pipe, rubber sleave length 4 ~
5cm。
Further, the locating support thickness 5cm, by a series of PVC sheetings of the different weak bonding of adhesion strengths
It is formed by stacking.
Further, at the locating support, the aggregate outer wrap of locating support, muscle material and repeatable Grouting Pipe has steel
Silk netting protective layer.
The beneficial effects of the invention are as follows repeatedly slip casting is implemented to breaking surrounding rock in good time by repeatable slurry injection technique, filling is enclosed
Crack in rock, dynamic improve the globality and intensity of breaking surrounding rock, maintain anchor pole intensity in itself and its impetus, effectively play
Its carrying acts on.
Brief description of the drawings
Fig. 1 is the multiple grouted anchor bar drawing in side sectional elevation of side bare weight of three muscle material groove positions；
Fig. 2 is the multiple grouted anchor bar drawing in side sectional elevation of side bare weight of four muscle material groove positions；
Fig. 3 is the multiple grouted anchor bar profilograph of side bare weight.
In figure, 1. locating supports, 2. muscle material grooves, 3. repeatable slip casting tube seats, 4. muscle materials, 5. repeatable Grouting Pipes, 6. go out
Starch aperture, 7. steel fabric sheet protective layers, 8. rubber sleaves, 9. locksets or clamp nut, 10. billets.
Embodiment
With reference to embodiment, the present invention is described in detail.
The multiple grouted anchor bar of the side bare weight of the present invention, as shown in Figure 1 to Figure 3, including some upper-lower positions correspond to determining for arrangement
Position support 1, locating support 1 are provided with muscle material groove 2 and repeatable slip casting tube seat 3, repeat slip casting tube seat 3 positioned at muscle material groove 2
Side, muscle material 4 is placed with muscle material groove 2, repeatable slip casting tube seat 3 is placed with repeatable Grouting Pipe 5, repeats in Grouting Pipe 5
Provided with pulp aperture 6, pulp aperture 6 is unidirectional slurry outlet, can be achieved that the purpose of slip casting is repeated several times.
Preferably, it is the Grouting Pipe compared with hard elastic PVC material to repeat Grouting Pipe 5.Muscle material groove 2 can set one or
Multiple, muscle material 4 is the wire muscle materials such as reinforcing bar, steel hinge line.The repeatable bottom end seal of Grouting Pipe 5, and in the corresponding portion of locating support 1
Position sets 36 ~ 8mm of circle Ф pulp aperture 6, encloses spacing 5cm, and often circle is evenly arranged 3 ~ 4 pulp apertures 6.The spacing of locating support 1
1m.Outside the pulp aperture 6 of repeatable Grouting Pipe 5,2 ~ 3 layers of elasticity and the preferable rubber sleave 8 of toughness, rubber sleave are covered
84 ~ 5cm of length, can so realize unidirectional pulp.The thickness 5cm of locating support 1, is formed by stacking by the PVC sheetings of weak bonding.
The repeatable Grouting Pipe 5 of the present invention is located at the side of anchor pole muscle material, does not stress；Loosely couple between muscle material 4, quantity is according to need
Depending on wanting.Locating support 1 is regularly arranged by repeatable Grouting Pipe 5 and muscle material 4.The repeatable internal diameter of Grouting Pipe 5 is advisable with 2 ~ 3cm,
Coating butter on its outer wall, to reduce the adhesion strength that grout curing body is attached thereto, it is easy to the slurries of slip casting again along outer tube
Wall is flowed at the inclusion enclave cracking of anchor rod body, and is entered in breaking surrounding rock.At locating support 1, locating support 1, the and of muscle material 4
The outer wrap for the aggregate that repeatable Grouting Pipe 5 is formed has steel fabric sheet protective layer 7, and steel fabric sheet protective layer 7 plays protection
Rubber sleave 8, to avoid the effect that the body of rod scratches when inserting, while also function to fixing muscle material 4 and the work of repeatable Grouting Pipe 5
With.
Locating support 1 is designed as thickness 5cm, is formed by stacking by the PVC sheetings of weak bonding, when being easy to slip casting again,
Slurries are broken through from this, and enter in breaking surrounding rock.The thick locating support 1 that thin slice overlapping is formed, one can be big in roadway surrounding rock
During deformation, anchor pole is easy to rupture here, path is infiltrated into offer in breaking surrounding rock for the slurries of its grouting behind shaft or drift lining, second, thereafter
The slurries of slip casting can cleave along between thin slice, and penetrate into breaking surrounding rock.Cleaved for the ease of gradation along between partial sheet,
Can design makes having differences property of bonding strength between different thin slices.
Directly reinforcing bar is locked as shown in figure 3, anchor pole is coordinated by lockset or clamp nut 9 with billet 10；It is right
In the situation that muscle material is steel hinge line, anchor pole relocks after carrying out tensioning by special anchor cable lock.
The anchor pole application method of the present invention is as follows：
1. the processing of anchor pole muscle material.Suitable locating support 1 is selected, anchor pole muscle material is processed, sets Grouting Pipe, Grouting Pipe
Bottom end seal, the external envelope circle of muscle material and Grouting Pipe at locating support set steel wire lamella, protect rubber in Grouting Pipe
Set, while take firm muscle material to act on.
2. drilling.According to design parameter, the drill bit of suitable dimension is selected, is drilled to the depth of design requirement.If design
For enlarged footing anchor pole, then treating at reaming, spudded in using local reaming bit, and completing the construction of reaming section.
3. anchor rod body is placed.By in the anchor pole muscle material patchhole with Grouting Pipe, Grouting Pipe is set to make close to hole wall as far as possible
Muscle material is placed in the middle.
4. slip casting first.Slip casting can be implemented to anchor pole by tunnel section, using grouting pressure and grouting amount double control, and
Implement a slip casing by pressure again before slurries initial set.For shorter anchor pole, once full pipe range slip casting can be implemented by Grouting Pipe；
For long anchor pole, anchor cable, slip casting is preferably carried out using protrusive or retrusive segmenting slip casting method.After slip casting, it must use in time
Water rushes Xian's Grouting Pipe, residual slurry in pipe is removed, in case next slip casting.
5. tensioning fixation.When grouting serous fluid solidification reaches certain intensity（7 days generally after slip casting）, tackle muscle material and enter
Row locking.If muscle material is reinforcing bar, need reinforcing bar being inserted in billet（During more reinforcing bars）Or pallet（During single steel bar）Kong Zhong,
And locked one by one with clamp nut.If muscle material is steel hinge line, needs steel hinge line being inserted in billet hole, then use
Anchor cable special lockset carries out tensioning fixation to it.
6. repeat slip casting.When roadway deformation is obvious, roadway surrounding rock ruptures, and when crack is more, can carry out a pressure note
Slurry.For shorter anchor pole, once full pipe range slip casting can be implemented by Grouting Pipe；For long anchor pole, anchor cable, preferably using protrusive
Or retrusive segmenting slip casting method carries out slip casting.After slip casting, Xian's Grouting Pipe must be rushed with water in time, remove residual slurry in pipe
Liquid, in case slip casting from now on uses.
It is also an advantage of the present invention that the empty repeatable grouted anchor bar in side, real by repeating slip casting with the particular design of structure
Existing anchor pole self-healing, realize the stabilization of anchor pole environment, the stabilized soil pavement of long sustaining anchor pole；It is right by repeating slip casting
Constantly broken country rock carries out the reparation of strength and stiffness, makes one good stable state of country rock long sustaining, improves country rock
Bearing capacity, safeguard the stabilization in tunnel.Due to its self-healing function, can make up at present to roadway surrounding rock engineering properties,
Engineering-environment grasps inaccurate caused problem, can preferably tackle uncertainty in construction, in normal operation etc. and cause
Stability of the roadway sex chromosome mosaicism.
According to statistics, annual advance amount in China's coal-mine tunnel uses anchor pole more than 8000 ~ 10000km, 80% tunnel（Including anchor
Rope）Supporting, as coal resources are to deep mining, supporting power needs to greatly improve.Conventionally, the quantity of anchor pole, length need
Substantial increase.However, this technology can significantly reduce its length and dosage, difficulty of construction is reduced（Elongated hole is bored to be difficult to bore short-bore,
Cost performance is exponentially increased with hole depth）.In addition to coal mining, the pit mining in other mines similarly applies a large amount of anchor poles.
Therefore, the economic benefit of this technology will be very huge.
Described above is only the better embodiment to the present invention, not makees any formal limit to the present invention
System, any simple modification that every technical spirit according to the present invention is made to embodiment of above, equivalent variations and modification,
Belong in the range of technical solution of the present invention.
Claims (6)
- A kind of 1. multiple grouted anchor bar of side bare weight, it is characterised in that：Include the locating support of the corresponding arrangement of some upper-lower positions（1）, Locating support（1）It is provided with muscle material groove（2）With repeatable slip casting tube seat（3）, repeat slip casting tube seat（3）Positioned at muscle material groove（2） Side, muscle material groove（2）Inside it is placed with muscle material（4）, repeat slip casting tube seat（3）It is placed with repeatable Grouting Pipe（5）, can weigh Multiple Grouting Pipe（5）It is provided with pulp aperture（6）, pulp aperture（6）For unidirectional slurry outlet, the locating support（1）Thickness 5cm, It is formed by stacking by a series of PVC sheetings of the different weak bonding of adhesion strengths.
- 2. the multiple grouted anchor bar of side bare weight according to claim 1, it is characterised in that：The repeatable Grouting Pipe（5）For PVC materials The Grouting Pipe of matter；The muscle material groove（2）Set one or more；The muscle material（4）For reinforcing bar, steel hinge line.
- A kind of 3. multiple grouted anchor bar of side bare weight according to claim 1, it is characterised in that：The repeatable Grouting Pipe（5）Bottom End sealing, and with locating support（1）Corresponding position, if 36 ~ 8mm of circle Ф pulp aperture（6）, spacing 5cm is enclosed, often Circle is evenly arranged 3 ~ 4 pulp apertures（6）.
- 4. the multiple grouted anchor bar of side bare weight according to claim 1, it is characterised in that：The locating support（1）Spacing 1m.
- 5. the multiple grouted anchor bar of side bare weight according to claim 1, it is characterised in that：The repeatable Grouting Pipe（5）Pulp Aperture（6）Outside cover 2 ~ 3 layers of rubber sleave（8）, rubber sleave（8）4 ~ 5cm of length.
- 6. the multiple grouted anchor bar of side bare weight according to claim 1, it is characterised in that：The locating support（1）Place, locating support （1）, muscle material（4）With repeatable Grouting Pipe（5）Aggregate external envelope circle be enclosed with steel fabric sheet protective layer（7）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510674920.6A CN105178995B (en) | 2015-10-19 | 2015-10-19 | A kind of multiple grouted anchor bar of side bare weight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510674920.6A CN105178995B (en) | 2015-10-19 | 2015-10-19 | A kind of multiple grouted anchor bar of side bare weight |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105178995A CN105178995A (en) | 2015-12-23 |
| CN105178995B true CN105178995B (en) | 2017-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510674920.6A Expired - Fee Related CN105178995B (en) | 2015-10-19 | 2015-10-19 | A kind of multiple grouted anchor bar of side bare weight |
Country Status (1)
| Country | Link |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882225B (en) * | 2019-04-04 | 2024-01-23 | 河南理工大学 | Extendable repeated grouting pipe and double-circle repeated grouting anchor rod |
| CN111927511B (en) * | 2020-07-29 | 2022-05-24 | 安徽理工大学 | Steel pipe anchor cable end blasting and grouting combined supporting method and system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4068481A (en) * | 1977-05-05 | 1978-01-17 | Chevron Research Company | Self-retaining roof bolt |
| CN201801861U (en) * | 2010-06-02 | 2011-04-20 | 中国京冶工程技术有限公司 | Repeated self-adaptive grouting system |
| CN203867598U (en) * | 2014-04-11 | 2014-10-08 | 衢州市优德工业设计有限公司 | Anchor cable capable of applying prestress repeatedly |
| CN104405423A (en) * | 2014-10-23 | 2015-03-11 | 山西晋城无烟煤矿业集团有限责任公司 | Mining grouting anchor rope |
| CN204401624U (en) * | 2015-01-09 | 2015-06-17 | 曹世贵 | Grouting Pipe |
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2015
- 2015-10-19 CN CN201510674920.6A patent/CN105178995B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN105178995A (en) | 2015-12-23 |
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| C10 | Entry into substantive examination | ||
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| CB03 | Change of inventor or designer information |
Inventor after: Wang Shuren Inventor after: Zou Zhengsheng Inventor after: Liu Lei Inventor after: Wu Gang Inventor after: Zheng Qingjie Inventor after: Zhang Jinsong Inventor after: Chen Xiaodong Inventor after: Qin Guanzhen Inventor before: Zou Zhengsheng Inventor before: Zheng Qingjie Inventor before: Zhang Jinsong Inventor before: Wang Shuren Inventor before: Chen Xiaodong Inventor before: Qin Guanzhen |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171212 Termination date: 20211019 |
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| CF01 | Termination of patent right due to non-payment of annual fee |