CN102146673A - Anchoring structure for liquid-injection corrosion-resistant anchor rod or anchor cable and construction method thereof - Google Patents
Anchoring structure for liquid-injection corrosion-resistant anchor rod or anchor cable and construction method thereof Download PDFInfo
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- CN102146673A CN102146673A CN 201110049394 CN201110049394A CN102146673A CN 102146673 A CN102146673 A CN 102146673A CN 201110049394 CN201110049394 CN 201110049394 CN 201110049394 A CN201110049394 A CN 201110049394A CN 102146673 A CN102146673 A CN 102146673A
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Abstract
The invention discloses an anchoring structure for a liquid-injection corrosion-resistant anchor rod or anchor cable and a construction method thereof. The anchoring structure comprises a resin end-anchored anchor rod or anchor cable body arranged in an anchor hole, wherein a grouting-stop plug is also arranged at the opening of the anchor hole; an anchor rod head or an anchor cable head is exposed out of the anchor hole from the plug hole of the grouting-stop plug; the grouting-stop plug is also provided with two plug holes; a liquid injection nozzle is inserted into one plug hole and chemical grout is filled into the anchor hole through the liquid injection nozzle; an exhaust pipe with two open ends is inserted into the other plug hole; a check-valve ball and a return spring are arranged in the liquid injection nozzle; a locking slot connected with grouting equipment is reserved on the peripheral surface of the liquid injection nozzle; the length of the exhaust pipe is equivalent to that of the end-anchored anchor rod or anchor cable; and exhaust holes are reserved on the peripheral surface of the exhaust pipe close to the bottom of a drilled hole. The anchoring structure solves the problem of sealing water and preventing corrosion of anchor rod holes at the positions such as an arch part and the like, not only can serve as permanent support, but also can serve as temporary support.
Description
Technical field
The present invention relates to anchor pole or anchor cable that mine, traffic, hydraulic engineering supporting are used, relate in particular to fluid injection anticorrosion anchor rod and anchor cable that the weak glued soft-rock tunnel of the argillization that contains strong alkaline water, chamber and tunnel support are used.
Background technology
In mine working, chamber and the constructing tunnel that geotechnical engineering relates to, jeopardize safety for preventing surrouding rock deformation or unstability, a kind of main support technology that country rock is reinforced is to adopt anchor pole or cable bolting.Anchor pole or cable bolting are to bore anchor hole on the roadway surrounding rock, and (interior dress anchor pole is called anchor eye, square at anchor hole with anchor pole or anchorage cable anchoring; Interior dress anchor cable is called the anchor cable hole) in.Anchor pole and anchor cable are with a kind of supporting type, only are the differences of material forms.The also available anchor cable of the anchor pole of the following stated replaces.
The anchor pole type can be divided into mechanical anchor formula, total length bond-anchorage formula, resin-bonded anchoring type, friction-type by anchoring process; Can be divided into common bolt and prestressed anchor by the prestressing force mode; Can be divided into full length fastening and end anchorage by the anchoring section form.Modal be with resin-bonded termination point of anchor rod in anchor hole bottom, abbreviate " resin end anchor formula " as.Bolt support can be brought into play the stabilizing power of geotechnical body self fully, be a kind of little to the protolith disturbance, speed of application is fast, safe and reliable, cost-effective reinforcing technique, in mine construction, obtained using widely, obtained good economic benefit and social benefit.
But in certain areas, belong to Jurassic system basement rock stratum, mainly be mud stone layer, sand layers, mud sandstone alternating layers, wherein sand layers is rich in pore water, and the mud stone water-swellable, sandstone, mud stone intensity are all not high, and degree of consolidation is low, chance water softening, intensity sharply descend, and are glued dilatancy soft rock a little less than the typical argillization.Mainly there is following problem in this geological condition when adopting anchor pole or cable bolting construction:
(1) country rock mainly is mud stone, sandstone alternating layers around the tunnel, and the mud stone layer has water shutoff preferably, and sand layers is rich in pore water, but the intensity of mud stone and sandstone and degree of cementation are all lower, and meet water electrode easily expand, softening, intensity sharply descends.Even surface, tunnel country rock is not moisture, because the disturbance when the construction square, connect mutually between each rock stratum, after particularly ganging up water-bearing stratum, cause pore water to ooze out, cause each rock stratum to suffer large tracts of land water enchroachment (invasion) evil, cause rock property reduction, intensity to be fallen suddenly, anchor pole is also owing to lose required anchoring strength and global failure.Therefore, ganging up the aquifer problem when how to overcome the square construction, is one of key that solves the weak glued dilatancy soft-rock tunnel of argillization, chamber anchor pole effective support.
(2) moisture major part is strong basicity in the weak glued soft rock rock stratum of argillization, and is more serious to the corrosion of anchor pole." resin end anchor formula " structure of using in tunnel, the chamber support only is to live the body of rod in the anchor hole bottom with chemical anchoring agent (resinoid bond) anchoring, so be called " end anchor ".This anchor structure is except that anchoring section is subjected to the parcel protection of anchoring agent, and all the other most of anchor rod bodies all are exposed in the anchor eye air.When square infiltrated strong alkaline water, the serious consequence that lost efficacy in the period of service very easily took place in anchor bar body after the corrosiveness that is subjected to strong alkaline water for a long time.Therefore, how to avoid the large tracts of land etching problem of the free section of anchor rod body, be solve the weak glued dilatancy soft-rock tunnel of argillization, chamber anchor pole effective support key two.
(3) in order to address the above problem, some engineering attempts using total length bond-anchorage type anchor pole.Common total length bond-anchorage formula anchor pole is the hollow type grouted anchor bar at present, and it is made up of hollow type anchor bar body and stop grouting plug, is processed with some eyelets on the anchor bar body, charges into cement grout in the gap of square and anchor bar body.This hollow type grouted anchor bar is often owing to reasons such as construction and rock stratum densifications, and grouting serous fluid can not be filled full eye.When the anchor pole of construction arch, because the upwards extruding of intraocular air can't be discharged fully; cause often leakiness of the cement grout annotated, regular meeting stays big space, and cement grout can not be filled full eye; do not reach water shutoff, corrosion-resistant effect, and cement grout there is corrosiveness to anchor bar body.Simultaneously, the lever strength of hollow type grouted anchor bar is lower, and country rock is stressed can not to provide enough anchored force when big.Therefore, how to improve anchor rod strength, thereby and guarantee that the closely knit and timely discharge of total length bonding anchor pole slurries total length intraocular air reaches water shutoff, corrosion-resistant effect, be glued dilatancy soft-rock tunnel a little less than the solution argillization, chamber anchor pole effective support key three.
In sum, single end anchorage type and common grouted anchor bar all can not effectively solve water shutoff, anticorrosion problem in the reinforcing of glued dilatancy soft rock strata a little less than argillization, and supporting effect is not satisfactory.
Summary of the invention
The present invention is for solving the supporting problem of the weak glued dilatancy soft-rock tunnel of argillization, chamber, and the pluses and minuses of binding end anchor anchor pole and grouted anchor bar provide the anchor structure of a kind of total length fluid injection anticorrosion anchor rod and anchor cable.This anchor pole and anchor cable can form high-strength anchored force rapidly after installing, and effectively solve the water shutoff of position squares such as arch, anticorrosion problem, both can be used as permanent support, can be used as temporary lining again.
The anchor structure of total length fluid injection anticorrosion anchor rod of the present invention is, it comprises the resin end anchor formula anchor bar body that is installed in the anchor hole, and it is characterized in that: stop grouting plug also is installed on the aperture of anchor hole, and the anchor pole head exposes outside the anchor hole from the jack of stop grouting plug; Also be processed with two jacks on the described stop grouting plug, insert liquid injecting mouth in the jack, in anchor hole, charge into chemical grout, insert the stack of open at both ends in another jack by liquid injecting mouth;
In the described liquid injecting mouth import check-valve ball and return spring are installed, liquid injecting mouth entrance point side face is provided with the draw-in groove that is connected with grouting equipment.
Described stack length is suitable with end anchor anchor bar body length, is having steam vent near on the stack side face of foot of hole, so that discharge air in the square during anchor pole fluid injection of arch.
But above-mentioned stack is double as high-pressure slip-casting pipe also, when needing high-pressure slip-casting again after the fluid injection construction is finished, can connect the enterprising horizontal high voltage mortar depositing construction of high-pressure slip-casting equipment.
Construction sequence of the present invention is as follows:
After accomplishing fluently anchor hole, termination anchoring type anchor bar body is installed at first, is formed termination resin anchoring section in the anchor hole bottom after construction is finished, install stop grouting plug, liquid injecting mouth and stack again; Carry out fluid injection by liquid injecting mouth, chemical grout charges at the bottom of the hole from the aperture, and air is discharged by stack in the anchor hole, the anchor hole space gradually by slurries fill up, closely knit, thereby realize that the anchor pole total length is by chemical grout sealing and closely knit bonding; Tray before chemical grout coagulates, fastening nut, or apply prestressing force, finish installation.
The anchor structure of the anticorrosion anchor cable of total length fluid injection of the present invention is identical with the anchor structure of above-mentioned total length fluid injection anticorrosion anchor rod.That is, replace anchor bar body with the anchor cable body.
The anchor structure advantage of this total length fluid injection anticorrosion anchor rod and anchor cable is:
(1) owing to enriched chemical grout in the anchor hole, it is bigger to produce anchored force, water blockoff, favorable anti-corrosion effect, can effectively solve the string water and the anchor pole corrosion difficult problem of the weak glued dilatancy soft-rock tunnel of argillization, chamber square, thereby avoid the country rock of mud stone, sandstone character to meet water reduction and intensity decline problem;
(2) than existing hollow type grouted anchor bar, employed anchor pole, the anchor cable body of rod are solid, and bigger anchored force can be provided;
(3) working procedure system, convenient, fast has simultaneously realized the total length bonding again playing the anchor pole corrosion-resistant, does not influence normal anchor bolt construction operation;
(4) can partly recover the stress of primary rock, guarantee that anchor pole is stressed to be evenly distributed, better bring into play the support action of anchor pole;
(5) processing technology thereof is simple and reliable, and cost performance is superior, and physical and mechanical property is stable.
Description of drawings
Fig. 1 is an organigram of the present invention;
Fig. 2 is a liquid injecting mouth organigram of the present invention.
Marginal data: 1-liquid injecting mouth, 2-stack, 3-stop grouting plug, 4-anchor bar body, 5-check-valve ball, 6-draw-in groove, 7-return spring, 8-anchor hole, 9-nut, 10-pallet, 11-steam vent, 12-termination resin anchoring section, 13-chemical grout.
The specific embodiment
As shown in Figure 1, the anchor structure of total length fluid injection anticorrosion anchor rod of the present invention is, it comprises the resin end anchor formula anchor bar body 4 that is installed in the anchor hole 8, and stop grouting plug 3 also is installed on the aperture of anchor hole 8, and the anchor pole head exposes outside the anchor hole 8 from the jack of stop grouting plug 3; Also be processed with two jacks on the described stop grouting plug 3, insert liquid injecting mouth 1 in the jack, in anchor hole 8, charge into chemical grout 13, insert the stack 2 of open at both ends in another jack by liquid injecting mouth 1; Described stack 2 length are suitable with anchor bar body 4 length, have steam vent 11 on stack 2 side faces near boring 8 bottoms.As shown in Figure 2, in described liquid injecting mouth 1 import check-valve ball 5 and return spring 7 are installed, liquid injecting mouth 1 entrance point side face is provided with the draw-in groove 6 that is connected with grouting equipment.
Liquid injecting mouth 1 length 150mm～200mm among the embodiment, external diameter 4～6mm.Stack 2 is the steel tube body of hollow, and external diameter 4～6mm has steam vent 11 on its side face in the 100～200mm length range of bottom.
Construction sequence is as follows:
After accomplishing fluently anchor hole 8, termination anchoring type anchor bar body 4 is installed at first, is formed termination resin anchoring section 12 in anchor hole 8 bottoms after construction is finished, install stop grouting plug 3, liquid injecting mouth 1 and stack 2 again; Carry out fluid injection by liquid injecting mouth 1, chemical grout 13 charges at the bottom of the hole from the aperture, air are discharged by stack 2 in the anchor hole 8, the space at the bottom of aperture to the hole gradually by chemical grout 13 fill up, closely knit, thereby realize that anchor bar body 4 total lengths are sealed by chemical grout 13 and bond.Chemical grout 13 solidifies preceding tray 10, fastening nut 9, or apply prestressing force, finish installation.
Anchor bar body 4 among the embodiment can replace with the anchor cable body.
Claims (2)
1. the anchor structure of fluid injection anticorrosion anchor rod or anchor cable, it comprises resin end anchor formula anchor pole or the anchor cable body that is installed in the anchor hole, it is characterized in that, stop grouting plug also is installed on the aperture of anchor hole, anchor pole or anchor cable head expose outside the anchor hole from the jack of stop grouting plug; Also be processed with two jacks on the described stop grouting plug, insert liquid injecting mouth in the jack, in anchor hole, charge into chemical grout, insert the stack of open at both ends in another jack by liquid injecting mouth;
In the described liquid injecting mouth import check-valve ball and return spring are installed, liquid injecting mouth entrance point side face is provided with the draw-in groove that is connected with grouting equipment;
Described stack length is suitable with end anchor anchor pole or anchor cable body length, is having steam vent near on the stack side face of foot of hole.
2. the job practices of fluid injection anticorrosion anchor rod as claimed in claim 1 or anchorage cable anchoring structure is characterized in that step is as follows:
After accomplishing fluently anchor hole, termination anchoring type anchor pole or anchor cable body are installed at first, are formed termination resin anchoring section in the anchor hole bottom after construction is finished, install stop grouting plug, liquid injecting mouth and stack again; Carry out fluid injection by liquid injecting mouth, chemical grout charges at the bottom of the hole from the aperture, and air is discharged by stack in the anchor hole, the anchor hole space gradually by slurries fill up, closely knit, thereby realize that anchor pole or anchor cable total length are by chemical grout sealing and closely knit bonding; Tray before chemical grout coagulates, fastening nut, or apply prestressing force, finish installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201110049394 CN102146673A (en) | 2011-02-27 | 2011-02-27 | Anchoring structure for liquid-injection corrosion-resistant anchor rod or anchor cable and construction method thereof |
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| CN 201110049394 CN102146673A (en) | 2011-02-27 | 2011-02-27 | Anchoring structure for liquid-injection corrosion-resistant anchor rod or anchor cable and construction method thereof |
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| CN102146673A true CN102146673A (en) | 2011-08-10 |
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| CN 201110049394 Pending CN102146673A (en) | 2011-02-27 | 2011-02-27 | Anchoring structure for liquid-injection corrosion-resistant anchor rod or anchor cable and construction method thereof |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505686A (en) * | 2011-10-19 | 2012-06-20 | 山东科技大学 | Control method of anchorage force loss of prestressed anchor cable caused by duct forming technology |
| CN102606178A (en) * | 2012-04-16 | 2012-07-25 | 王书铭 | Special sprayer for long anchor cable support in underground mine and rapid support method |
| CN102644471A (en) * | 2012-04-20 | 2012-08-22 | 天地科技股份有限公司 | Hole sealing machine and hole sealing method using hole sealing machine to perform small aperture grouting for anchoring anchor rope |
| CN102852538A (en) * | 2012-09-06 | 2013-01-02 | 太原理工大学 | Anchoring method of 'end part binding and full-length filling' in anchoring support in roadway |
| CN103147777A (en) * | 2013-03-22 | 2013-06-12 | 中国矿业大学 | Pumping paste prestress full bolting anchor rod/cable supporting method |
| CN103174444A (en) * | 2013-02-26 | 2013-06-26 | 中国矿业大学(北京) | Support method and support structure for soft coal/ rock stratum alley |
| CN103195061A (en) * | 2013-04-07 | 2013-07-10 | 浙江华东建设工程有限公司 | Multi-functional casing pipe part and anchor rod construction method using same |
| CN103321663A (en) * | 2013-02-28 | 2013-09-25 | 新汶矿业集团有限责任公司 | Roadway baseboard anchoring and top pouring type pre-stressed anchor cable strengthening device and construction method |
| CN103382847A (en) * | 2013-07-26 | 2013-11-06 | 中国矿业大学 | Prestressed drilling, anchoring and grouting anchor cable and supporting method |
| CN103498689A (en) * | 2013-10-10 | 2014-01-08 | 新乡市嘉汇科技有限公司 | Anchor cable slip casting hole packer |
| WO2014091074A1 (en) * | 2012-12-10 | 2014-06-19 | Suomen Metallityö Oy | Rock anchor bolt |
| CN104405424A (en) * | 2014-11-17 | 2015-03-11 | 神华集团有限责任公司 | Full-length-anchoring anchor rod and anchoring method |
| CN104632260A (en) * | 2015-03-19 | 2015-05-20 | 中国长江三峡集团公司 | High-compactness anchor rod grouting method |
| CN104675419A (en) * | 2013-12-02 | 2015-06-03 | 张弘 | Cylindrical pocket type anchor rod fixing structure |
| CN104846823A (en) * | 2015-05-18 | 2015-08-19 | 葛洲坝集团第一工程有限公司 | Full-bonding cement mortar anchor rod and grouting method |
| CN106907167A (en) * | 2017-05-03 | 2017-06-30 | 刘伟 | To long anchor cable gradation mortar depositing construction structure and its construction method on stope in hole |
| CN107013238A (en) * | 2017-03-20 | 2017-08-04 | 化工部长沙设计研究院 | Resin mortar combined bolt support structure and its construction method |
| CN108661682A (en) * | 2018-05-02 | 2018-10-16 | 阳泉煤业（集团）有限责任公司 | A kind of weak cementing rich water top plate anchor cable hole grouting water blocking method |
| CN110230511A (en) * | 2019-06-21 | 2019-09-13 | 安徽理工大学 | A kind of anchor dispensing device that can be vented for common bolt and its application method |
| CN110344866A (en) * | 2019-08-23 | 2019-10-18 | 中铁二院工程集团有限责任公司 | A kind of anchor pole suitable for large deformation tunnel-cable bolting system and application method |
| CN117386423A (en) * | 2023-11-08 | 2024-01-12 | 山东焱鑫矿用材料加工有限公司 | Full-length cementation anchor cable with sizing hierarchical control structure and use method |
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| CN201093101Y (en) * | 2007-08-02 | 2008-07-30 | 李树源 | One way valve for injecting slurry into pile side and bottom |
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Cited By (32)
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| CN102505686A (en) * | 2011-10-19 | 2012-06-20 | 山东科技大学 | Control method of anchorage force loss of prestressed anchor cable caused by duct forming technology |
| CN102606178A (en) * | 2012-04-16 | 2012-07-25 | 王书铭 | Special sprayer for long anchor cable support in underground mine and rapid support method |
| CN102606178B (en) * | 2012-04-16 | 2013-12-25 | 王书铭 | Special sprayer for long anchor cable support in underground mine and rapid support method |
| CN102644471A (en) * | 2012-04-20 | 2012-08-22 | 天地科技股份有限公司 | Hole sealing machine and hole sealing method using hole sealing machine to perform small aperture grouting for anchoring anchor rope |
| CN102644471B (en) * | 2012-04-20 | 2015-07-22 | 天地科技股份有限公司 | Hole sealing machine and hole sealing method using hole sealing machine to perform small aperture grouting for anchoring anchor rope |
| CN102852538A (en) * | 2012-09-06 | 2013-01-02 | 太原理工大学 | Anchoring method of 'end part binding and full-length filling' in anchoring support in roadway |
| CN102852538B (en) * | 2012-09-06 | 2015-11-25 | 太原理工大学 | The anchoring process of " end is cohered, total length filling " in the anchoring support of tunnel |
| RU2651681C2 (en) * | 2012-12-10 | 2018-04-23 | Суомен Металлитиё Ой | Rock anchor bolt |
| US9470088B2 (en) | 2012-12-10 | 2016-10-18 | Suomen Metallityö Oy | Rock anchor bolt |
| WO2014091074A1 (en) * | 2012-12-10 | 2014-06-19 | Suomen Metallityö Oy | Rock anchor bolt |
| CN103174444B (en) * | 2013-02-26 | 2014-12-10 | 中国矿业大学(北京) | Support method and support structure for soft coal/ rock stratum alley |
| CN103174444A (en) * | 2013-02-26 | 2013-06-26 | 中国矿业大学(北京) | Support method and support structure for soft coal/ rock stratum alley |
| CN103321663A (en) * | 2013-02-28 | 2013-09-25 | 新汶矿业集团有限责任公司 | Roadway baseboard anchoring and top pouring type pre-stressed anchor cable strengthening device and construction method |
| CN103147777A (en) * | 2013-03-22 | 2013-06-12 | 中国矿业大学 | Pumping paste prestress full bolting anchor rod/cable supporting method |
| CN103195061A (en) * | 2013-04-07 | 2013-07-10 | 浙江华东建设工程有限公司 | Multi-functional casing pipe part and anchor rod construction method using same |
| CN103195061B (en) * | 2013-04-07 | 2015-05-06 | 浙江华东建设工程有限公司 | Multi-functional casing pipe part and anchor rod construction method using same |
| CN103382847A (en) * | 2013-07-26 | 2013-11-06 | 中国矿业大学 | Prestressed drilling, anchoring and grouting anchor cable and supporting method |
| CN103382847B (en) * | 2013-07-26 | 2015-08-19 | 中国矿业大学 | Prestressed drilling, anchoring and grouting anchor cable and supporting method |
| CN103498689A (en) * | 2013-10-10 | 2014-01-08 | 新乡市嘉汇科技有限公司 | Anchor cable slip casting hole packer |
| CN104675419A (en) * | 2013-12-02 | 2015-06-03 | 张弘 | Cylindrical pocket type anchor rod fixing structure |
| CN104405424A (en) * | 2014-11-17 | 2015-03-11 | 神华集团有限责任公司 | Full-length-anchoring anchor rod and anchoring method |
| CN104632260A (en) * | 2015-03-19 | 2015-05-20 | 中国长江三峡集团公司 | High-compactness anchor rod grouting method |
| CN104846823A (en) * | 2015-05-18 | 2015-08-19 | 葛洲坝集团第一工程有限公司 | Full-bonding cement mortar anchor rod and grouting method |
| CN107013238A (en) * | 2017-03-20 | 2017-08-04 | 化工部长沙设计研究院 | Resin mortar combined bolt support structure and its construction method |
| CN106907167A (en) * | 2017-05-03 | 2017-06-30 | 刘伟 | To long anchor cable gradation mortar depositing construction structure and its construction method on stope in hole |
| CN108661682A (en) * | 2018-05-02 | 2018-10-16 | 阳泉煤业（集团）有限责任公司 | A kind of weak cementing rich water top plate anchor cable hole grouting water blocking method |
| CN108661682B (en) * | 2018-05-02 | 2024-05-28 | 阳泉煤业（集团）有限责任公司 | Grouting water plugging method for anchor cable hole of weakly cemented water-rich roof |
| CN110230511A (en) * | 2019-06-21 | 2019-09-13 | 安徽理工大学 | A kind of anchor dispensing device that can be vented for common bolt and its application method |
| CN110344866A (en) * | 2019-08-23 | 2019-10-18 | 中铁二院工程集团有限责任公司 | A kind of anchor pole suitable for large deformation tunnel-cable bolting system and application method |
| CN110344866B (en) * | 2019-08-23 | 2024-03-19 | 中铁二院工程集团有限责任公司 | Anchor rod-anchor cable supporting system suitable for large-deformation tunnel and use method |
| CN117386423A (en) * | 2023-11-08 | 2024-01-12 | 山东焱鑫矿用材料加工有限公司 | Full-length cementation anchor cable with sizing hierarchical control structure and use method |
| CN117386423B (en) * | 2023-11-08 | 2024-05-10 | 烟台佑利技术有限公司 | Full-length cementation anchor cable with sizing hierarchical control structure and use method |
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Application publication date: 20110810 |