CN105178995A - Lateral hollow repeatable grouting anchor bar - Google Patents
Lateral hollow repeatable grouting anchor bar Download PDFInfo
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- CN105178995A CN105178995A CN201510674920.6A CN201510674920A CN105178995A CN 105178995 A CN105178995 A CN 105178995A CN 201510674920 A CN201510674920 A CN 201510674920A CN 105178995 A CN105178995 A CN 105178995A
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- China
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- grouting pipe
- anchor bar
- muscle material
- locating support
- slip casting
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Abstract
The invention discloses a lateral hollow repeatable grouting anchor bar comprising a plurality of locating supports vertically and correspondingly arranged in position, wherein the locating supports are provided with reinforced material chases and repeatable grouting pipe chases; the repeatable grouting pipe chases are located at one sides of the reinforced material chases; reinforced materials are placed in the reinforced material chases; repeatable grouting pipes are placed in the repeatable grouting pipe chases; and the bottom ends of the repeatable grouting pipes are sealed, and small slurry discharging holes which are one-way slurry discharging holes are formed in the repeatable grouting pipes. The lateral hollow repeatable grouting anchor bar has the beneficial effects that broken surrounding rocks are repeatedly grouted at the right moment by using a repeatable grouting technology to fill cracks in the surrounding rocks, so that the integrality and strength of the broken surrounding rocks are improved, meanwhile, the strength and acting point of the anchor bar are maintained, and the bearing effect of the anchor bar is taken.
Description
Technical field
The invention belongs to civil engineering equipment technical field, relate to the multiple grouted anchor bar of a kind of side bare weight.
Background technology
Anchor pole (comprising anchor cable) is a kind of application Rock And Soil reinforcing technique widely, is widely used in mine support.Hollow grouting anchor (comprising hollow grouting cable anchor) is low with its valency, pulling capacity is high, and in mine, is especially applied in coal mine support, and demonstrates its good effect.But, current hollow grouting anchor can only slip casting once, cannot recycle in roadway surrounding rock fragmentation origin of force reparation or the reinforcement that its slip casting function carries out surrounding rock consolidation and anchor pole afterwards; Simultaneously because belonging to customed product, design flexibility is limited.Because deep tunnel has the feature of lasting large deformation, the result of tunnel continuous deformation will cause rock crusher, and the fragmentation of country rock will reduce anchor rod drawing supporting capacity, and when especially rock crusher develops into anchor pole origin of force place, anchor pole will lose efficacy.The support engineering practice of colliery km dark lane shows, still there is the large deformation of 500mm in one month in the tunnel of hollow grouting cable anchor supporting, country rock is again broken and to deep development, but cannot again play because of the slip casting function of hollow slurry anchor cable, and Drift stability is affected or threatens.
Summary of the invention
The object of the present invention is to provide the multiple grouted anchor bar of a kind of side bare weight, solve existing hollow grouting anchor can only slip casting once, after country rock is broken again, its slip casting function of recycling cannot carry out the problem of surrounding rock consolidation and its origin of force reinforcement.
The technical solution adopted in the present invention is the locating support comprising the arrangement of some upper-lower positions correspondence, locating support is provided with muscle material groove and can repeats slip casting tube seat, Grouting Pipe slot can be repeated in the side of muscle material groove, muscle material is placed with in muscle material groove, slip casting tube seat can be repeated be placed with and can repeat Grouting Pipe, can repeat Grouting Pipe and be provided with pulp aperture, pulp aperture is unidirectional slurry outlet.
Further, the described Grouting Pipe that repeats is Grouting Pipe compared with hard elastic PVC material; Described muscle material groove arranges one or more; Described muscle material is reinforcing bar, steel hinge line.
Further, describedly repeat Grouting Pipe bottom end seal, and establish the pulp aperture of 3 circle Ф 6 ~ 8mm at each locating support position corresponding position, turn separation 5cm, often circle is evenly arranged 3 ~ 4 pulp apertures.
Further, described muscle material, if reinforcing bar, then adopts clamp nut locking; If steel hinge line, then special anchor cable lock is adopted to carry out tensioning fixation.To become current colliery three little anchor poles (comprising anchor cable), then the diameter (steel hinge line is nominal diameter) of muscle material less than normally should increase its radical.
Further, described locating support spacing 1m.
Further, 2 ~ 3 layers of rubber sleave are covered outside the described pulp aperture repeating Grouting Pipe, rubber sleave length 4 ~ 5cm.
Further, described locating support thickness 5cm, is formed by stacking by the PVC sheeting of the different weak bonding of a series of adhesion strength.
Further, described locating support place, locating support, muscle material and the aggregate outer wrap that can repeat Grouting Pipe have steel fabric sheet topping.
The invention has the beneficial effects as follows that slurry injection technique is repeatedly in good time implements slip casting to breaking surrounding rock, crack in filling country rock by repeating, and dynamically improves globality and the intensity of breaking surrounding rock, maintains intensity and the origin of force thereof of anchor pole itself, effectively play its carrying effect.
Accompanying drawing explanation
Fig. 1 is the multiple grouted anchor bar drawing in side sectional elevation of side bare weight of three muscle material slots;
Fig. 2 is the multiple grouted anchor bar drawing in side sectional elevation of side bare weight of four muscle material slots;
Fig. 3 is the multiple grouted anchor bar longitudinal plan of side bare weight.
In figure, 1. locating support, 2. muscle material groove, 3. can repeat slip casting tube seat, 4. muscle material, 5. can repeat Grouting Pipe, 6. pulp aperture, 7. steel fabric sheet topping, 8. rubber sleave, 9. lockset or clamp nut, 10. billet.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in detail.
The multiple grouted anchor bar of side of the present invention bare weight, as shown in Figure 1 to Figure 3, comprise the locating support 1 of some upper-lower positions correspondence arrangement, locating support 1 is provided with muscle material groove 2 and can repeats slip casting tube seat 3, can repeat the side that slip casting tube seat 3 is positioned at muscle material groove 2, be placed with muscle material 4 in muscle material groove 2, slip casting tube seat 3 can be repeated be placed with and can repeat Grouting Pipe 5, can repeat Grouting Pipe 5 and be provided with pulp aperture 6, pulp aperture 6 is unidirectional slurry outlet, can realize the object repeatedly repeating slip casting.
Preferably, can repeat Grouting Pipe 5 is Grouting Pipe compared with hard elastic PVC material.Muscle material groove 2 can arrange one or more, and muscle material 4 is the wire such as reinforcing bar, steel hinge line muscle material.Can repeat Grouting Pipe 5 bottom end seal, and establish the pulp aperture 6 of 3 circle Ф 6 ~ 8mm at the corresponding position of locating support 1, turn separation 5cm, often circle is evenly arranged 3 ~ 4 pulp apertures 6.Locating support 1 spacing 1m.Outside the pulp aperture 6 that can repeat Grouting Pipe 5, cover 2 ~ 3 layers of elasticity and the good rubber sleave 8 of toughness, rubber sleave 8 length 4 ~ 5cm, can realize unidirectional pulp like this.Locating support 1 thickness 5cm, is formed by stacking by the PVC sheeting of weak bonding.
The present invention can repeat the side that Grouting Pipe 5 is positioned at anchor pole muscle material, does not stress; Loose connection between muscle material 4, quantity is determined according to needs.Locating support 1 can repeat Grouting Pipe 5 and muscle material 4 is regularly arranged.Can repeat Grouting Pipe 5 internal diameter to be advisable with 2 ~ 3cm, coating butter on its outer wall, to reduce the adhesion strength that grout curing body is attached thereto, the slurries being convenient to slip casting again flow into the inclusion enclave cracking place of anchor rod body along outer tube wall, and enter in breaking surrounding rock.At locating support 1 place; locating support 1, muscle material 4 and the outer wrap of aggregate that Grouting Pipe 5 forms can be repeated have steel fabric sheet topping 7; steel fabric sheet topping 7 plays protection rubber sleave 8; the effect of scratching when inserting to avoid the body of rod, also plays fixing muscle material 4 and the effect that can repeat Grouting Pipe 5 simultaneously.
Locating support 1 is designed to thickness 5cm, and be formed by stacking by the PVC sheeting of weak bonding, when being convenient to slip casting again, from then on slurries are broken through, and enter into breaking surrounding rock.The thick locating support 1 of the superimposed formation of thin slice, one can when roadway surrounding rock large deformation, and anchor pole is convenient to break herein, and the slurries for its grouting behind shaft or drift lining enter in breaking surrounding rock to provide and infiltrate path, two is that the slurries of its grouting behind shaft or drift lining along splitting between thin slice, and can penetrate in breaking surrounding rock.For the ease of gradation along splitting between partial sheet, the bonding strength property of there are differences made between different thin slice can be designed.
As shown in Figure 3, anchor pole to be coordinated with billet 10 by lockset or clamp nut 9 and directly locks reinforcing bar; Be the situation of steel hinge line for muscle material, anchor pole locks after carrying out stretch-draw by special anchor cable lock again.
Anchor pole using method of the present invention is as follows:
1. the processing of anchor pole muscle material.Select suitable locating support 1, processing anchor pole muscle material, set Grouting Pipe, Grouting Pipe bottom end seal, arrange gauze wire cloth lamella at the muscle material at locating support place and the external envelope circle of Grouting Pipe, rubber sleeve in protection Grouting Pipe, gets the effect of firm muscle material simultaneously.
2. hole.According to design parameters, select the drill bit of suitable dimension, hole to the degree of depth of designing requirement.If be designed to enlarged footing anchor pole, then treating reaming place, adopting local reaming bit to spud in, and complete the construction of reaming section.
3. anchor rod body is placed.By in the anchor pole muscle material patchhole of band Grouting Pipe, make Grouting Pipe make muscle material placed in the middle near hole wall as far as possible.
4. slip casting first.Slip casting can be implemented by tunnel section to anchor pole, adopt grouting pressure and grouting amount two ore control, and before slurries initial set, implement a slip casing by pressure again.For shorter anchor pole, implement once full pipe range slip casting by Grouting Pipe; For long anchor pole, anchor cable, protrusive or retrusive segmenting slip casting method should be adopted to carry out slip casting.After slip casting, Xian's Grouting Pipe must be rushed by timely water, remove residual slurry in pipe, in order to next slip casting.
5. tensioning fixation.When grouting serous fluid solidification reaches certain intensity (be generally slip casting after 7 days), reply muscle material locks.If muscle material is reinforcing bar, then needs reinforcing bar to be inserted in billet (during many reinforcing bars) or pallet (during single steel bar) hole, and lock with clamp nut one by one.If muscle material is steel hinge line, then need steel hinge line to be inserted in billet hole, then adopt anchor cable special lockset to carry out tensioning fixation to it.
6. repeat slip casting.When roadway deformation is obvious, roadway surrounding rock breaks, and when crack is more, can carry out a slip casing by pressure.For shorter anchor pole, implement once full pipe range slip casting by Grouting Pipe; For long anchor pole, anchor cable, protrusive or retrusive segmenting slip casting method should be adopted to carry out slip casting.After slip casting, Xian's Grouting Pipe must be rushed by timely water, remove residual slurry in pipe, use in order to slip casting from now on.
The present invention be advantageous in that side sky can repeat grouted anchor bar, with the particular design of structure, realizing anchor pole self-healing by repeating slip casting, realizing the stable of anchor pole environment, the stabilized soil pavement of long sustaining anchor pole; By repeating slip casting, constantly broken country rock being carried out to the reparation of strength and stiffness, making the stable state that country rock long sustaining one is good, improve the supporting capacity of country rock, safeguard the stable of tunnel.Due to its self-healing function, can make up and at present the inaccurate problem brought be grasped to roadway surrounding rock engineering properties, engineering-environment, the stability of the roadway sex chromosome mosaicism that the uncertainty etc. in construction, in normal operation causes can be tackled preferably.
According to statistics, annual advance amount in China's coal-mine tunnel is more than 8000 ~ 10000km, and the tunnel of 80% adopts anchor pole (comprising anchor cable) supporting, and along with coal resources are to deep mining, supporting power needs greatly to improve.Routinely, the quantity of anchor pole, length need to roll up.But this technology can significantly reduce its length and consumption, reduce difficulty of construction (bore elongated hole to be difficult to bore short-bore, cost performance and hole depth exponentially increase).Except coal mining, the pit mining in other mine applies a large amount of anchor pole too.Therefore, the economic benefit of this technology will be very huge.
The above is only to better embodiment of the present invention, not any pro forma restriction is done to the present invention, every any simple modification done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all belong in the scope of technical solution of the present invention.
Claims (7)
1. the multiple grouted anchor bar of side bare weight, it is characterized in that: the locating support (1) comprising the arrangement of some upper-lower positions correspondence, locating support (1) is provided with muscle material groove (2) and can repeats slip casting tube seat (3), the side that slip casting tube seat (3) is positioned at muscle material groove (2) can be repeated, muscle material (4) is placed with in muscle material groove (2), slip casting tube seat (3) can be repeated be placed with and can repeat Grouting Pipe (5), can repeat Grouting Pipe (5) and be provided with pulp aperture (6), pulp aperture (6) is unidirectional slurry outlet.
2., according to the multiple grouted anchor bar of a kind of side bare weight described in claim 1, it is characterized in that: the described Grouting Pipe repeating Grouting Pipe (5) and be PVC material; Described muscle material groove (2) arranges one or more; Described muscle material (4) is reinforcing bar, steel hinge line.
3. according to the multiple grouted anchor bar of a kind of side bare weight described in claim 1, it is characterized in that: describedly repeat Grouting Pipe (5) bottom end seal, and at the position corresponding with locating support (1), if the pulp aperture (6) of 3 circle Ф 6 ~ 8mm, turn separation 5cm, often circle is evenly arranged 3 ~ 4 pulp apertures (6).
4., according to the multiple grouted anchor bar of a kind of side bare weight described in claim 1, it is characterized in that: described locating support (1) spacing 1m.
5., according to the multiple grouted anchor bar of a kind of side bare weight described in claim 1, it is characterized in that: cover 2 ~ 3 layers of rubber sleave (8) outside the described pulp aperture (6) repeating Grouting Pipe (5), rubber sleave (8) length 4 ~ 5cm.
6. according to the multiple grouted anchor bar of a kind of side bare weight described in claim 1, it is characterized in that: described locating support (1) thickness 5cm, be formed by stacking by the PVC sheeting of the different weak bonding of a series of adhesion strength.
7. according to the multiple grouted anchor bar of a kind of side bare weight described in claim 1, it is characterized in that: described locating support (1) place, locating support (1), muscle material (4) and the aggregate external envelope circle that can repeat Grouting Pipe (5) are enclosed with steel fabric sheet topping (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 true CN105178995A (en) | 2015-12-23 |
| CN105178995B 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 |
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| CN (1) | CN105178995B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882225A (en) * | 2019-04-04 | 2019-06-14 | 河南理工大学 | It is extending to repeat Grouting Pipe and the repeatable grouted anchor bar of double circles |
| CN111927511A (en) * | 2020-07-29 | 2020-11-13 | 安徽理工大学 | Steel pipe anchor cable end blasting and grouting combined supporting method and system |
Citations (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 |
-
2015
- 2015-10-19 CN CN201510674920.6A patent/CN105178995B/en not_active Expired - Fee Related
Patent Citations (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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882225A (en) * | 2019-04-04 | 2019-06-14 | 河南理工大学 | It is extending to repeat Grouting Pipe and the repeatable grouted anchor bar of double circles |
| 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 |
| CN111927511A (en) * | 2020-07-29 | 2020-11-13 | 安徽理工大学 | Steel pipe anchor cable end blasting and grouting combined supporting method and system |
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| Publication number | Publication date |
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| CN105178995B (en) | 2017-12-12 |
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| CB03 | Change of inventor or designer information | ||
| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171212 Termination date: 20211019 |