CN101749041A - Dual-anchoring rod and construction method thereof - Google Patents
Dual-anchoring rod and construction method thereof Download PDFInfo
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- CN101749041A CN101749041A CN200910219574A CN200910219574A CN101749041A CN 101749041 A CN101749041 A CN 101749041A CN 200910219574 A CN200910219574 A CN 200910219574A CN 200910219574 A CN200910219574 A CN 200910219574A CN 101749041 A CN101749041 A CN 101749041A
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- anchoring
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Abstract
The invention relates to a dual-anchoring rod and a construction method thereof. In the dual-anchoring rod, a spiral anchoring body is arranged at the anchoring end of the anchoring rod, wherein the spiral anchoring body is a rod body which is provided with vortex filament at the outer side. The construction method of the dual-anchoring rod comprises the following steps of: firstly, drilling, wherein a drilled mounting hole comprises a front-end auxiliary hole and a rear-end main hole; secondly, placing anchoring agent in a drill hole; thirdly, bumping the anchoring agent into the mounting hole with the anchoring rod; then, starting a mounting tool to rotate and stir the anchoring agent and further propelling the anchoring body so that the spiral anchoring head of the anchoring rod is screwed into the auxiliary hole. The spiral anchoring body has the anchoring function once being carved into a rock, and the torque applied by the mounting tool enables the rod body to obtain proper prestress. The anchoring rod does not need to wait for the coagulation time of the anchoring agent, can apply proper primary anchoring force to the rock after installation in one step, can reinforce the rock in time, becomes the prestress anchoring rod structure when the intensity of the later-stage anchoring agent reaches and can exert the function of the anchoring rod to the maximum extent.
Description
Technical field
The present invention relates to anchor pole and job practices that a kind of mining engineering supporting is used, be specifically related to a kind of dual-anchoring rod and job practices thereof.
Background technology
Supporting has important function to the mine bolt technology to crossheading, and the speed of anchor bolt construction quality and anchor bolt construction is the focus that people are concerned about always, and anchor structure or pattern are most important in this field.Anchor pole and the job practices of using mainly contains following deficiency at present:
1) uses cement or resin anchor pole, need to wait for that cementing agent solidifies just can remove in the construction and installation process to bore and implement clamp nut technology as cementing agent.
2) anchor pole is installed the prestressing force that rear supporting plate applies and is had only seldom part of the body of rod.
Summary of the invention
The objective of the invention is at above-mentioned the deficiencies in the prior art, providing a kind of can increase prestressing force and dual-anchoring rod and job practices thereof quickly and easily are installed.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of dual-anchoring rod, comprise anchor rod body, pallet and nut, it is characterized in that the anchored end of described anchor rod body is provided with the Screw Anchor solid, described Screw Anchor solid is that the outside has the body of rod that revolves silk.
Described anchor rod body is reinforcing bar, steel strand or glass fiber reinforced plastic, and described Screw Anchor solid and anchor rod body connect as one.
Described Screw Anchor solid is connected on the body of rod or with the body of rod and is made into integration for revolving wire bond.
The silk that revolves of described Screw Anchor solid is single head or multi-head spiral line, and described helix is two kinds of forms continuous or that be interrupted.
The described spiral that revolves silk revolves silk and exceeds body of rod 1-4mm apart from being 4-25mm.
Described Screw Anchor solid is taper.
The front end drill bit is 2 cutter heads, and described reaming bit is provided with 3 above cutter heads.
Described front end drill bit and reaming bit comprise the hard wear-resistant material sheet that is arranged on the cutting face, and described hard wear-resistant material sheet outer end is straight, and the inboard is a circular arc.
The job practices of dual-anchoring rod is characterized in that may further comprise the steps:
(1) at first boring, the installing hole that gets out comprises the auxilliary hole of front end and the main aperture that is communicated with auxilliary hole, main aperture has different diameters with auxilliary hole, described auxilliary hole be used for described termination Screw Anchor solid cooperation and diameter less than described main aperture diameter;
(2) throw in the anchoring agent, the anchoring agent is pushed in the installing hole, start then and the facility rotation is installed stirs the anchoring agent and further advance anchor rod body to make in the auxilliary hole of spiral anchorage head precession of anchor pole simultaneously with anchor pole;
(3) fastening nut fixed tray.
Adopt composite drill bit to hole during boring, this composite drill bit comprises the front end drill bit, preceding Leptospiral that is connected with the front end drill bit and the reaming bit that is connected with preceding Leptospiral.
The present invention compared with prior art has the following advantages:
1, the revolving silk and can be carved into geotechnical body and form frictional resistance and play certain first anchor-hold of dual-anchoring rod in time reinforced structure, delays the unsettled unstability time limit of structure.
2, dual-anchoring rod can apply long prestressing force to anchor rod body, thereby makes the installation reliability of anchor pole improve greatly.
3, adopt the inventive method can improve efficiency of construction, and use simple.
Below in conjunction with accompanying drawing the present invention is described in further detail.
Description of drawings
Fig. 1 is a kind of example structure schematic diagram of dual-anchoring rod of the present invention.
Fig. 2 is the hole structure schematic diagram in the job practices of the present invention.
The composite drill bit structural representation of Fig. 3 for using in the job practices of the present invention.
Fig. 4 is a composite drill bit A-A view.
Fig. 5 is a composite drill bit B-B view.
Fig. 6 is the another kind of example structure schematic diagram of dual-anchoring rod of the present invention.
Description of reference numerals:
| 1-Screw Anchor solid; | The 2-anchor rod body; | The 3-pallet; | The 4-nut; |
| 5-assists the hole; | The 6-main aperture; | The 7-aperture; | 8-front end drill bit; |
| Leptospiral before the 9-; | The 10-reaming bit; | The 11-junction button; | 12-revolves silk; |
| 13-cutter head one; | 14-cutter head two; | 15-hard wear-resistant material sheet; |
The specific embodiment
Embodiment 1
Dual-anchoring rod as shown in Figure 1 comprises anchor rod body 2, anchor rod body 2 terminal pallet 3 and nuts 4 for being used to install and fix, and anchor rod body 2 front ends are Screw Anchor solid 1.Screw Anchor solid 1 is for having the body of rod that revolves silk 12, and anchor rod body 2 be a screw-thread steel, Screw Anchor solid 1 to revolve 12 direction be dextrorotation, the hand of spiral of anchor rod body 2 is left-handed.Anchor rod body 2 can also be other forms of steel, steel strand, glass fiber reinforced plastic, materials such as wood or bamboo.
Screw Anchor solid 1 connects as one with anchor rod body 2.
Screw Anchor solid 1 is welded on the body of rod for revolving silk 12.
The silk 12 that revolves of Screw Anchor solid 1 is the single head helix, and described helix is the continuous helical line.
The spiral that revolves silk 12 revolves silk 12 and exceeds body of rod 1mm apart from being 4mm.
The job practices of dual-anchoring rod may further comprise the steps:
(1) bore installing hole according to dual-anchoring rod length, drilling depth is less than rock-bolt length 100mm.As shown in Figure 2, get out the main aperture 6 and the auxilliary hole 5 of connection, make main aperture 6 have different diameters with auxilliary hole 5, auxilliary hole 5 be used for cooperating with Screw Anchor solid 1 and diameter less than main aperture 6 diameters;
Shown in Fig. 3,4 and 5, adopt composite drill bit to hole during boring, this composite drill bit comprises the front end drill bit 8 of front end, the preceding Leptospiral 9 that is connected with the front end drill bit, the junction button 11 of reaming bit 10 that is connected with preceding Leptospiral and reaming bit 10 rear ends.
Front end drill bit 8 is provided with 2 cutter heads 1, and reaming bit 10 is provided with 3 cutter heads 2 14.
Front end drill bit 8 and reaming bit 10 comprise the hard wear-resistant material sheet 15 that is arranged on the cutting face, and hard wear-resistant material sheet 15 outer ends are straight, and the inboard is a circular arc.
(2) anchoring agent medicine core is filled in the anchor hole that step (1) accomplished fluently, with dual-anchoring rod anchoring agent medicine core is headed in the installing hole, start then and facility rotation stirring anchoring agent medicine core is installed and is further advanced anchor rod body 2 to make revolving silk 12 precessions of Screw Anchor solid 1 assist in the hole 5 simultaneously;
(3) anchor rod body 2 ends are installed pallet 3 and nut 4 is fixed.
Revolving silk 12 and can being carved into geotechnical body and forming frictional resistance and play certain first anchor-hold of dual-anchoring rod in time reinforced structure, delays the unsettled unstability time limit of structure.Dual-anchoring rod applies long prestressing force can for anchor rod body 2, thereby makes the installation reliability of anchor pole improve greatly.Adopt the inventive method can improve efficiency of construction, and use simple.
Dual-anchoring rod as shown in Figure 6 comprises anchor rod body 2, anchor rod body 2 terminal pallet 3 and nuts 4 for being used to install and fix, and anchor rod body 2 front ends are Screw Anchor solid 1.Screw Anchor solid 1 is a leptospira structure, and anchor rod body 2 is a screw-thread steel, and a direction of revolving of Screw Anchor solid 1 is left-handed, and the hand of spiral of anchor rod body 2 is dextrorotation.Anchor rod body 2 is a solid construction.Screw Anchor solid 1 and anchor rod body 2 are for being made into integration.
Screw Anchor solid 1 is an one with anchor rod body 2.
Screw Anchor solid 1 is made into integration with the body of rod for revolving silk.
The silk 12 that revolves of Screw Anchor solid 1 is the multi-head spiral line, the form of described helix for being interrupted, and advantage is that precession speed is fast, helix helps the diffusion of anchoring agent medicine core for being interrupted.
The spiral that revolves silk 12 revolves silk 12 and exceeds body of rod 4mm apart from being 25mm.
Screw Anchor solid 1 front end is a sharp cone distal.Screw Anchor solid 1 can also integral body be set to the thinner taper of front end.
The job practices of dual-anchoring rod may further comprise the steps:
(1) bores installing hole according to dual-anchoring rod length, as shown in Figure 2, get out the main aperture 6 and the auxilliary hole 5 of connection, make main aperture 6 have different diameters with auxilliary hole 5, auxilliary hole 5 be used for that Screw Anchor solid 1 pierces and diameter less than main aperture 6 diameters, the diameter of main aperture 6 is than anchor rod body 2 big 6-10mm;
Shown in Fig. 3,4 and 5, adopt composite drill bit to hole during boring, this composite drill bit comprises the front end drill bit 8 of front end, the preceding Leptospiral 9 that is connected with the front end drill bit, the junction button 11 of reaming bit 10 that is connected with preceding Leptospiral and reaming bit 10 rear ends.
(2) anchoring agent medicine core is filled in the installing hole that step (1) accomplished fluently, dual-anchoring rod is withstood anchoring agent medicine core to be placed in the installing hole, dual-anchoring rod is screwed in installing hole, and Screw Anchor solid 1 cooperates with auxilliary hole 5, and the silk that revolves on the Screw Anchor solid 1 is carved in 5 hole walls of auxilliary hole;
(3) the 7 fastening nut fixed trays in the aperture.
The present invention can adapt to the DIFFERENT SOIL body according to the different parameters that revolves silk 12 sizes and spacing.
Revolving silk 12 and can being carved into geotechnical body and forming frictional resistance and play certain first anchor-hold of dual-anchoring rod in time reinforced structure, delays the unsettled unstability time limit of structure.Dual-anchoring rod applies long prestressing force can for anchor rod body 2, thereby makes the installation reliability of anchor pole improve greatly.Adopt the inventive method can improve efficiency of construction, and use simple.
Claims (10)
1. a dual-anchoring rod comprises anchor rod body, pallet and nut, it is characterized in that the anchored end of described anchor rod body is provided with the Screw Anchor solid, and described Screw Anchor solid is that the outside has the body of rod that revolves silk.
2. dual-anchoring rod according to claim 1 is characterized in that described anchor rod body is reinforcing bar, steel strand or glass fiber reinforced plastic, and described Screw Anchor solid and anchor rod body connect as one.
3. dual-anchoring rod according to claim 1 and 2 is characterized in that described Screw Anchor solid is connected on the body of rod or with the body of rod and is made into integration for revolving wire bond.
4. dual-anchoring rod according to claim 1 and 2 is characterized in that the silk that revolves of described Screw Anchor solid is single head or multi-head spiral line, and described helix is two kinds of forms continuous or that be interrupted.
5. dual-anchoring rod according to claim 1 and 2 is characterized in that the described spiral that revolves silk apart from being 4-25mm, revolving silk and exceeds body of rod 1-4mm.
6. dual-anchoring rod according to claim 1 and 2 is characterized in that described Screw Anchor solid is taper.
7. the job practices of a dual-anchoring rod as claimed in claim 1 is characterized in that may further comprise the steps:
(1) at first boring: the installing hole that gets out comprises the auxilliary hole of front end and the main aperture that is communicated with auxilliary hole, and main aperture has different diameters with auxilliary hole, described auxilliary hole be used for described termination Screw Anchor solid cooperation and diameter less than described main aperture diameter;
(2) throw in the anchoring agent: with anchor pole the anchoring agent is pushed into the installing hole inner bottom part, start then and the facility rotation is installed stirs the anchoring agent and further advance anchor rod body to make in the auxilliary hole of spiral anchorage head precession of anchor pole simultaneously;
(3) fastening nut fixed tray.
8. the job practices of the dual-anchoring rod body of rod according to claim 7, adopt composite drill bit to hole when it is characterized in that holing, this composite drill bit comprises the front end drill bit, preceding Leptospiral that is connected with the front end drill bit and the reaming bit that is connected with preceding Leptospiral.
9. composite drill bit according to claim 8 is characterized in that described front end drill bit is 2 cutter heads, and described reaming bit is provided with 3 above cutter heads.
10. according to Claim 8 or 9 described composite drill bits, it is characterized in that described front end drill bit and reaming bit comprise the hard wear-resistant material sheet that is arranged on the cutting face, described hard wear-resistant material sheet outer end is straight, and the inboard is a circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910219574A CN101749041A (en) | 2009-12-21 | 2009-12-21 | Dual-anchoring rod and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910219574A CN101749041A (en) | 2009-12-21 | 2009-12-21 | Dual-anchoring rod and construction method thereof |
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| Publication Number | Publication Date |
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| CN101749041A true CN101749041A (en) | 2010-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910219574A Pending CN101749041A (en) | 2009-12-21 | 2009-12-21 | Dual-anchoring rod and construction method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102605777A (en) * | 2011-12-20 | 2012-07-25 | 武汉大学 | Glass reinforced plastic spiral anchor rod and using method thereof |
| CN102943681A (en) * | 2012-11-21 | 2013-02-27 | 天地科技股份有限公司 | Method and device for supporting weak adhesion bond soft rock roadway |
| CN105673038A (en) * | 2016-03-23 | 2016-06-15 | 山东科技大学 | Double-bearing arch combined anchor rod supporting method |
| CN106285747A (en) * | 2016-09-27 | 2017-01-04 | 中国恩菲工程技术有限公司 | Anchor rod component and the anchor with it |
| CN108468559A (en) * | 2018-04-28 | 2018-08-31 | 青岛达邦钻机有限责任公司 | The end anchoring process and mating Hole drilling set of self tapping precession anchor pole |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2202799Y (en) * | 1994-07-16 | 1995-07-05 | 煤炭科学研究总院北京建井研究所 | Reinforced glass fiber anchor rod |
| CN2278083Y (en) * | 1996-10-29 | 1998-04-08 | 赵建平 | High-strength metal anchor shaft |
| CN2351554Y (en) * | 1999-03-26 | 1999-12-01 | 李涛 | Strength round steel spiral coil resin roofbolt |
| CN2690557Y (en) * | 2004-04-13 | 2005-04-06 | 中国石化集团中原石油勘探局钻井工程技术研究院 | Large diameter well drill bit |
| CN2934577Y (en) * | 2006-04-12 | 2007-08-15 | 永城煤电(集团)有限责任公司 | Recoverable screw thread anchor rod |
| KR20080025902A (en) * | 2006-09-19 | 2008-03-24 | 황현주 | Rock bolt and fixation method the rock bolt |
| CN101413396A (en) * | 2008-09-26 | 2009-04-22 | 中国水利水电第十四工程局有限公司 | Injecting and mounting method of stretching anchor rod |
| CN201581911U (en) * | 2009-12-21 | 2010-09-15 | 惠兴田 | Double-anchoring anchor rod |
-
2009
- 2009-12-21 CN CN200910219574A patent/CN101749041A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2202799Y (en) * | 1994-07-16 | 1995-07-05 | 煤炭科学研究总院北京建井研究所 | Reinforced glass fiber anchor rod |
| CN2278083Y (en) * | 1996-10-29 | 1998-04-08 | 赵建平 | High-strength metal anchor shaft |
| CN2351554Y (en) * | 1999-03-26 | 1999-12-01 | 李涛 | Strength round steel spiral coil resin roofbolt |
| CN2690557Y (en) * | 2004-04-13 | 2005-04-06 | 中国石化集团中原石油勘探局钻井工程技术研究院 | Large diameter well drill bit |
| CN2934577Y (en) * | 2006-04-12 | 2007-08-15 | 永城煤电(集团)有限责任公司 | Recoverable screw thread anchor rod |
| KR20080025902A (en) * | 2006-09-19 | 2008-03-24 | 황현주 | Rock bolt and fixation method the rock bolt |
| CN101413396A (en) * | 2008-09-26 | 2009-04-22 | 中国水利水电第十四工程局有限公司 | Injecting and mounting method of stretching anchor rod |
| CN201581911U (en) * | 2009-12-21 | 2010-09-15 | 惠兴田 | Double-anchoring anchor rod |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102605777A (en) * | 2011-12-20 | 2012-07-25 | 武汉大学 | Glass reinforced plastic spiral anchor rod and using method thereof |
| CN102943681A (en) * | 2012-11-21 | 2013-02-27 | 天地科技股份有限公司 | Method and device for supporting weak adhesion bond soft rock roadway |
| CN105673038A (en) * | 2016-03-23 | 2016-06-15 | 山东科技大学 | Double-bearing arch combined anchor rod supporting method |
| CN106285747A (en) * | 2016-09-27 | 2017-01-04 | 中国恩菲工程技术有限公司 | Anchor rod component and the anchor with it |
| CN108468559A (en) * | 2018-04-28 | 2018-08-31 | 青岛达邦钻机有限责任公司 | The end anchoring process and mating Hole drilling set of self tapping precession anchor pole |
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Application publication date: 20100623 |