CN102748048A - Hole wall grouting anchor cable - Google Patents
Hole wall grouting anchor cable Download PDFInfo
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- CN102748048A CN102748048A CN2012102461427A CN201210246142A CN102748048A CN 102748048 A CN102748048 A CN 102748048A CN 2012102461427 A CN2012102461427 A CN 2012102461427A CN 201210246142 A CN201210246142 A CN 201210246142A CN 102748048 A CN102748048 A CN 102748048A
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- anchor cable
- hole
- supporting plate
- grouting
- anchor
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Abstract
The invention discloses a hole wall grouting anchor cable which is characterized in that an L-shaped grouting hole is formed in an anchor cable supporting plate and on the periphery of a steel strand mounting hole, wherein one end of the grouting hole is communicated with an anchor cable hole in the anchor cable supporting plate and is communicated with an annular grouting cavity between a steel strand and a hole drilling wall through the anchor cable hole, and the other end of the grouting hole is located on the surface of the anchor cable supporting plate and is connected with an external grouting pipe; a hole pipe located in a drilled hole is connected with the anchor cable supporting plate; and a groove is turned on the periphery of the hole pipe and is internally provided with a hole wall sealing ring. The hole wall grouting anchor cable disclosed by the invention can effectively improve the grout anchoring strength of an anchor cable and reduces the manufacturing cost of the anchor cable.
Description
Technical field
The present invention relates to a kind of anchor cable, be applied to the colliery shaft and drift supporting.
Background technology
The colliery tunnel support anchor cable is made up of steel strand, resin anchoring agent anchoring section, the free section of steel strand, aperture backing plate and ground tackle; Through resin anchoring agent steel strand are anchored at the roadway surrounding rock depths, anchor cable are applied pretightning force through anchor cable supporting plate and stretch-draw appearance etc.Anchor cable is transferred to the country rock depths with roadway surrounding rock pressure through steel strand, the supporting tunnel.
At present, the anchor cable overwhelming majority who uses in the China's coal-mine belongs to small-bore resin anchoring prestress anchorage cable.There is following problem in this anchorage cable anchoring technology, directly influences or reduced the anchoring property and the supporting performance of anchor cable:
1, the anchorage cable anchoring degree of depth receives the restriction of mounting process, because the torque that anchor cable is installed facility can be provided can not support steel strand to stir darker anchoring agent;
2, the possible anchorage length=anchor cable hole depth+head-room-steel strand length-drill height of anchor cable, and steel strand length and drill height are fixed, therefore, the anchorage length of anchor cable receives the high restriction in lane, and the anchored force of anchor cable is difficult to further raising;
3, the packaging bag of anchoring agent is difficult to all blend, its sheet film separated anchoring agent and steel strand or with the bonding of hole wall, reduced the anchoring strength of anchor cable;
4, in anchoring agent propelling movement process, possibly take place that the anchoring agent is caved in, punching is crossed, can not all arrive anchorage point etc., cause part anchoring agent to lose the uncertainty of anchor, anchorage cable anchoring performance or anchored force.
In order to solve the problem that exists in the anchorage cable anchoring technology of existing colliery, the domestic hollow grouting cable anchor of having developed in recent years.The body of rod of hollow grouting cable anchor is a hollow structure, carries slip casting core pipe, and the anchor cable body of rod is that steel pipe and some high strength helical rib compressor wires volume strands form by a center.High strength helical rib compressor wire is that the semiproduct after being handled by the calendering drawing process form through last plastic strain drawing, and Steel Wire Surface forms the spiral ribs of three to six continuous convexities, and spiral ribs is an one with basic circle.The anchor cable sealing of hole is replaced using before this method of cotton yarn or rapid setting cement shutoff injected hole by the whitewashing sealing.Resin explosive roll end anchor is carried out on hollow grouting cable anchor top, can apply pretightning force and carrying after the installation immediately.
Hollow slip casting anchor has overcome the above-mentioned shortcoming of existing anchor cable to a certain extent.But also there is following defective in the hollow grouting cable anchor:
1, anchor cable body of rod Fracture Force is low, adopts the central steel tube outside to compile the anchor cable body of rod of strand high strength helical rib compressor wire, has seriously reduced the Fracture Force of anchor cable;
2, the anchor cable body of rod constitutes for two or more material, and its material is eliminated without internal stress and the setting stabilized treatment, has seriously undermined the mechanical performance and the anchoring property of coal mine support anchor cable;
3, grouting pipeline is long and thin, stops up easily during slip casting, possibly cause slip casting anchoring failure;
4, hollow grouting cable anchor cost of manufacture is higher.
Summary of the invention
The present invention is for avoiding above-mentioned existing in prior technology weak point, a kind of hole wall grouting cable anchor is provided, and the anchor cable body of rod still adopts the high-strength prestress steel strand, to improve the Fracture Force of anchor cable; Through injected hole rationally is set the ring-type between steel strand and the hole wall is carried out slip casting at interval; Guarantee that the slip casting passage is unimpeded,, avoid the obstruction of grouting pipe so that can press the slurries of annotating viscosity higher, higher consolidating strength; Improve the slurries anchoring strength of anchor cable, can reduce the anchor cable cost of manufacture.
The design feature of hole wall grouting cable anchor of the present invention is: in the anchor cable supporting plate, be positioned at periphery setting " L " the shape injected hole of steel strand installing hole; One end of said injected hole is connected with anchor cable hole in the anchor cable supporting plate; And through the anchor cable hole be formed on steel strand and be connected with ring-type slip casting chamber between the drill hole wall; The other end of injected hole is positioned at the surface of anchor cable supporting plate, is used to connect outside Grouting Pipe; The orifice tube and the said anchor cable supporting plate that are arranged in boring link, and at the periphery of the said orifice tube groove of having got on the bus, the hole wall sealing ring are installed in the groove.
The design feature of hole wall grouting cable anchor of the present invention also is: car has step to the steel strand installing hole on the said anchor cable supporting plate at the place, aperture, and the steel strand sealing ring is installed.
Compared with present technology, beneficial effect of the present invention is embodied in:
1, the present invention has kept the good mechanical performance and the anchoring property of colliery tunnel support anchor cable through adopting the high-strength prestress steel strand as the anchor cable body of rod, has improved the supporting intensity or the Fracture Force of anchor cable;
2, the present invention adopts the hole wall grouting cable anchor, and the anchorage depth and the anchorage length of anchor cable are unrestricted; Can effectively improve the anchoring strength of anchor cable;
3, the anchoring quality of the adhesive property of the anchoring medium of stream line of the present invention and anchor cable is reliable and stable;
4, the present invention carries out slip casting through the annular channel between steel strand and the hole wall in the anchor cable hole, and the slip casting passage is unimpeded, improves the slip casting efficient of anchor cable;
5, anchor cable low cost of manufacture of the present invention.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Label among the figure: 1 anchor cable supporting plate; 2 injected holes; 3 orifice tubes; 4 hole wall sealing rings; 5 steel strand sealing rings; 6 steel strand; 7 resin anchoring sections; 8 cement paste anchoring sections, 9 ground tackles.
The specific embodiment
Referring to Fig. 1, the form of structure of hole wall grouting cable anchor is in the present embodiment:
" L " shape injected hole 2 is set in anchor cable supporting plate 1; One end of injected hole 2 is connected with anchor cable hole in the anchor cable supporting plate 1; And through the anchor cable hole be formed on steel strand and be connected with ring-type slip casting chamber between the drill hole wall; The other end of injected hole 2 is positioned at the surface of anchor cable supporting plate 1, is used to connect outside Grouting Pipe; The orifice tube 3 that is arranged in boring links with the anchor cable supporting plate, at the periphery of orifice tube 3 groove of having got on the bus, hole wall sealing ring 4 is installed in the groove, in order to shutoff hole wall gap, stops injection slurry from the clearance leakage between orifice tube and the hole wall; Car has step to steel strand installing hole on the anchor cable supporting plate 1 at the place, aperture, and the steel strand sealing ring is installed, and leaks in order to the slurries that stop up between steel strand and the backing plate anchor cable hole.
Anchor cable of the present invention adopts resin anchoring agent and cement grout mixing anchoring, installation process:
1, in boring, push the anchoring agent, with steel strand 6 the anchoring agent is pushed into the hole at the bottom of, utilize steel strand to stir the anchoring agent, formation resin anchoring section 7, the partial-length anchoring of realization anchor cable;
2, anchor cable supporting plate 1 and ground tackle 9 are installed, anchor cable is carried out pretension stretch-draw;
3, outside Grouting Pipe is inserted the injected hole on the anchor cable supporting plate, anchor cable is carried out hole wall slip casting, form the cement grout anchoring section 8 of anchor cable.
The present invention is under the constant basically situation of existing anchor cable mounting technique and mounting process; Accomplish at anchor cable after the resin anchoring of partial-length; Have the anchor cable supporting plate of sealing of hole, slip casting and the triple functions of supporting plate concurrently through installation, realize the slip casting anchoring of anchor cable through the ring-type slip casting chamber between steel strand and the drill hole wall.
Claims (2)
1. hole wall grouting cable anchor; It is characterized in that in anchor cable supporting plate (1), be positioned at periphery setting " L " the shape injected hole (2) of steel strand installing hole; One end of said injected hole (2) is connected with anchor cable hole in the anchor cable supporting plate (1); And through the anchor cable hole be formed on steel strand and be connected with ring-type slip casting chamber between the drill hole wall, the other end of injected hole (2) is positioned at the surface of anchor cable supporting plate (1), is used to connect outside Grouting Pipe; The orifice tube (3) that is arranged in boring links with said anchor cable supporting plate, at the periphery of said orifice tube (3) groove of having got on the bus, hole wall sealing ring (4) is installed in the groove.
2. hole wall grouting cable anchor according to claim 1 is characterized in that car has step at aperture place for steel strand installing hole on the said anchor cable supporting plate (1), and the steel strand sealing ring is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102461427A CN102748048A (en) | 2012-07-17 | 2012-07-17 | Hole wall grouting anchor cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102461427A CN102748048A (en) | 2012-07-17 | 2012-07-17 | Hole wall grouting anchor cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102748048A true CN102748048A (en) | 2012-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102461427A Pending CN102748048A (en) | 2012-07-17 | 2012-07-17 | Hole wall grouting anchor cable |
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| CN (1) | CN102748048A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147777A (en) * | 2013-03-22 | 2013-06-12 | 中国矿业大学 | Pumping paste prestress full bolting anchor rod/cable supporting method |
| CN104265329A (en) * | 2014-09-29 | 2015-01-07 | 湖南科技大学 | Steel tube truss grouting reinforcing and supporting structure for high-stress weak broken surrounding rocks |
| CN106403872A (en) * | 2016-12-07 | 2017-02-15 | 中国科学院武汉岩土力学研究所 | Coal-mine deep section multipoint displacement meter measuring point anchoring agent push device |
| CN109026101A (en) * | 2018-09-13 | 2018-12-18 | 于守东 | A kind of mining anchor dispensing device and its application method |
| CN110030022A (en) * | 2019-03-28 | 2019-07-19 | 华北科技学院 | A kind of hole sealing device and method |
| CN111502720A (en) * | 2020-05-28 | 2020-08-07 | 淮南矿业(集团)有限责任公司 | Solid anchor rod capable of grouting |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2062543C (en) * | 1992-03-09 | 1996-09-17 | Douglas Milne | Cable bolt monitoring device |
| CN201650323U (en) * | 2010-03-27 | 2010-11-24 | 中国矿业大学 | Grouting anchor rope |
| WO2011057349A1 (en) * | 2009-11-13 | 2011-05-19 | Mortlach Holdings Pty Ltd | Cable bolt plug |
| CN202047850U (en) * | 2011-05-06 | 2011-11-23 | 何富连 | Anchor-grouting integrated support plate module |
| WO2012000016A1 (en) * | 2010-06-30 | 2012-01-05 | Dywidag-Systems International Pty Limited | An apparatus for post-grouting a cable bolt, cable bolt assembly and method of installing a cable bolt |
| CN202170802U (en) * | 2011-08-17 | 2012-03-21 | 安徽恒源煤电股份有限公司祁东煤矿 | Slip-casting anchor cable |
-
2012
- 2012-07-17 CN CN2012102461427A patent/CN102748048A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2062543C (en) * | 1992-03-09 | 1996-09-17 | Douglas Milne | Cable bolt monitoring device |
| WO2011057349A1 (en) * | 2009-11-13 | 2011-05-19 | Mortlach Holdings Pty Ltd | Cable bolt plug |
| CN201650323U (en) * | 2010-03-27 | 2010-11-24 | 中国矿业大学 | Grouting anchor rope |
| WO2012000016A1 (en) * | 2010-06-30 | 2012-01-05 | Dywidag-Systems International Pty Limited | An apparatus for post-grouting a cable bolt, cable bolt assembly and method of installing a cable bolt |
| CN202047850U (en) * | 2011-05-06 | 2011-11-23 | 何富连 | Anchor-grouting integrated support plate module |
| CN202170802U (en) * | 2011-08-17 | 2012-03-21 | 安徽恒源煤电股份有限公司祁东煤矿 | Slip-casting anchor cable |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147777A (en) * | 2013-03-22 | 2013-06-12 | 中国矿业大学 | Pumping paste prestress full bolting anchor rod/cable supporting method |
| CN104265329A (en) * | 2014-09-29 | 2015-01-07 | 湖南科技大学 | Steel tube truss grouting reinforcing and supporting structure for high-stress weak broken surrounding rocks |
| CN106403872A (en) * | 2016-12-07 | 2017-02-15 | 中国科学院武汉岩土力学研究所 | Coal-mine deep section multipoint displacement meter measuring point anchoring agent push device |
| CN106403872B (en) * | 2016-12-07 | 2017-10-17 | 中国科学院武汉岩土力学研究所 | A kind of colliery deep displacement measuring point Anchor Agent pusher |
| CN109026101A (en) * | 2018-09-13 | 2018-12-18 | 于守东 | A kind of mining anchor dispensing device and its application method |
| CN110030022A (en) * | 2019-03-28 | 2019-07-19 | 华北科技学院 | A kind of hole sealing device and method |
| CN110030022B (en) * | 2019-03-28 | 2024-05-24 | 华北科技学院 | Hole sealing device and method |
| CN111502720A (en) * | 2020-05-28 | 2020-08-07 | 淮南矿业(集团)有限责任公司 | Solid anchor rod capable of grouting |
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Application publication date: 20121024 |