CN102877867A - Novel inflatable yielding pre-stress grouting anchor rod and usage method thereof - Google Patents
Novel inflatable yielding pre-stress grouting anchor rod and usage method thereof Download PDFInfo
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- CN102877867A CN102877867A CN2012103853083A CN201210385308A CN102877867A CN 102877867 A CN102877867 A CN 102877867A CN 2012103853083 A CN2012103853083 A CN 2012103853083A CN 201210385308 A CN201210385308 A CN 201210385308A CN 102877867 A CN102877867 A CN 102877867A
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- anchor rod
- rod body
- grouting
- pallet
- expansion tube
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Abstract
The invention discloses a novel inflatable yielding pre-stress grouting anchor rod and a usage method thereof. A taper head with the diameter larger than the diameter of the rod body and smaller than the diameter of a drill hole is processed at the front end of an anchor rod body, an expansion pipe is sleeved on the anchor rod body, an open slot is arranged at the front end of the expansion pipe, the front end of the expansion pipe abuts against the taper head and the rear end abuts against a nut; a circle of grouting holes are arranged on the anchor rod body at the open slot; and a tray is composed of two tray bodies which are stacked and fastened, wherein one tray body is a disc-shaped tray body for yielding, and the other tray body is a horn-head-shaped tray body for being plugged at an orifice. The grouting anchor rod is provided with initial anchor force and a yielding effect, a good support effect is provided when surrounding rock deforms, and effects of grouting reinforcement fracture development and loosing surrounding rock are provided. The arranged tray provides a yielding effect for the whole anchor rod and a grout plugging effect of a grouting plug is provided, and the trouble that the grouting plug is needed to be added during grouting of a prior anchor rod is omitted.
Description
Technical field
The present invention relates to that mine working, roads and tunnels, water conservancy culvert support engineering use grouted anchor bar.
Background technology
At present, various anchor poles have been used in large quantities in engineerings such as mine timbering, roads and tunnels supporting, the supporting of water conservancy culvert, massif reinforcing, building pile foundation reinforcings, country rock on every side being played reinforcement effect, thereby improve the intensity that country rock self bears pressure, is a kind of support form of active.
But in the situation that country rock exists crack and rock loose, depend merely on the single anchorage effect of anchor pole and also do not reach country rock is combined into one effectively, improve the purpose of country rock self bearing pressure.Therefore various grouted anchor bars occurred on the market, grouted anchor bar is comprised of hollow bolt body, pallet and nut; Grouted anchor bar can inject unconsolidated rock with slurries by hollow cavity, thereby anchor bar body is combined into one with country rock effectively, improves the purpose of country rock carrying self pressure.But this grouted anchor bar is without first anchor-hold, just produces anchorage effect after only having slurries to be solidified to some strength; And pallet belongs to plate shaped, when surrouding rock deformation, can not play the pressure effect that allows, although also allow at present the pressure pallet, such as butterfly-shaped and hemispherical pallet, but this allowing presses pallet can not play the stifled slurry of grouting plug, slurry easily overflows from the aperture during slip casting, causes grouting pressure not enough, does not reach slip casting effect.
Summary of the invention
The purpose of this invention is to provide a kind of cost low, easy for installation, both possessed first anchor-hold, have again the expansion type grouted anchor bar of grouting and reinforcing cranny development and loose wall rock effect.
The technical solution used in the present invention is: a kind of Novel expansion allows presses the prestressing force grouted anchor bar, it comprises the hollow bolt body of rod, pallet and nut, it is characterized in that, the front end of described anchor rod body is processed with greater than body of rod diameter and less than the taper head of bore diameter, put a diameter on the anchor rod body less than the expansion tube of taper head diameter, the expansion tube front end is provided with open slot, and the length of expansion tube should satisfy that front end withstands on the taper head, the rear end withstands on the nut; Anchor rod body at the open slot place is provided with a circle injected hole; Described pallet is comprised of two overlapping disk bodies that interlock, and one of them disk body has been to allow the dish-shaped shape disk body of pressure effect, and another disk body is be used to the loudspeaker head disk body that is blocked on the aperture.
For the ease of exhaust, in the anchor pole hollow cavity, be provided with wireway, exposed junction is provided with gas port in the hole of anchor rod body, and wireway is communicated with gas port.
Installation and application of the present invention is, at first beats the petrosal foramen consistent with the expansion tube external diameter at country rock, expansion tube is enclosed within on the anchor rod body puts in the petrosal foramen, loads onto pallet, the nut of screwing on, and during tray, pallet dish shape disk body is near nut; Behind the skyhook, the grouting equipment of special use is connected on the anchor rod body exposed junction, wall-rock crack is carried out slip casting, slurries are permeated to wall-rock crack.
Operating principle of the present invention is: nut and pallet, expansion tube are in contact with one another in the process of nutting, anchor rod body is applied pulling force, expansion tube produces the axial compression effect, expansion tube is subjected to the impact of anchor rod body taper head, the open slot distending, be squeezed on the hole wall, increased the frictional force with hole wall, make integral body have certain anchorage effect; Pallet is subjected to nut shaft to pressure-acting simultaneously, and butterfly shape disk body is compressed, and whole bolt support is worked the pressure effect that allows, and loudspeaker head disk body is clamp-oned in the petrosal foramen, blocks petrosal foramen, plays stifled slurry plug; Air in petrosal foramen and the rock gap is derived in gas port, prevents that slip casting is unreal.
Good effect of the present invention is, has low, the easy for installation characteristics of cost, both possessed first anchor-hold and allowed the pressure effect, still has preferably supporting effect when large deformation appears in country rock, has again the effect of grouting and reinforcing cranny development and loose wall rock.The pallet that arranges can also play the effect of the stifled slurry of grouting plug except whole anchor pole being worked the pressure effect that allows, and need to add in addition the trouble of grouting plug when having saved existing bolt grouting.
Description of drawings
Fig. 1 is front view of the present invention.
Fig. 2 is the schematic diagram of pallet among Fig. 1.
Marginal data: 1-nut, 2-pallet, 3-expansion tube, 4-anchor rod body, 5-open slot, 6-injected hole, 7-gas port, 8-wireway, 9-taper head, 10-dish shape disk body, 11-loudspeaker head disk body.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described in further details:
As shown in Figure 1, a kind of expansion type allows presses the prestressing force grouted anchor bar, it comprises the hollow bolt body of rod 4, pallet 2 and nut 1, the front end of described anchor rod body 4 is processed with greater than body of rod diameter and less than the taper head 9 of bore diameter, put a diameter on the anchor rod body 4 less than the expansion tube 3 of taper head 9 diameters, expansion tube 3 front ends are provided with open slot 5, and the length of expansion tube 3 should satisfy that front end withstands on the taper head 9, the rear end withstands on the nut 1; Anchor rod body 4 at open slot 5 places is provided with a circle injected hole 6; Described pallet 2 is comprised of two overlapping disk bodies that interlock, and one of them disk body has been to allow the dish-shaped shape disk body 10 of pressure effect, and another disk body is be used to the loudspeaker head disk body 11 (seeing Fig. 2) that is blocked on the aperture.
For the ease of exhaust, in the anchor pole hollow cavity, be provided with wireway 8, exposed junction is provided with gas port 7 in the hole of anchor rod body 4, and wireway 8 is communicated with gas port 7.
During use, at first beat the petrosal foramen consistent with expansion tube 3 external diameters at country rock, expansion tube 3 is enclosed within on the anchor rod body 4 puts in the petrosal foramen, load onto pallet 2, the nut 1 of screwing on, during tray 2, the dish-shaped shape disk body 10 of pallet is near nut 1; Behind the skyhook, the grouting equipment of special use is connected on anchor rod body 4 exposed junctions, wall-rock crack is carried out slip casting, slurries are permeated to wall-rock crack.
Operating principle is: nut 1 is in contact with one another with pallet 2, expansion tube 3 in the process of nutting 1, anchor rod body 4 is applied pulling force, expansion tube 3 produces the axial compression effect, expansion tube 3 is subjected to the impact of anchor rod body taper head 9, open slot 5 distendings, be squeezed on the hole wall, increased the frictional force with hole wall, make integral body have certain anchorage effect; Pallet 2 is subjected to nut 1 axial compression effect simultaneously, and butterfly shape disk body 10 is compressed, and whole bolt support is worked the pressure effect that allows, and loudspeaker head disk body 11 is clamp-oned in the petrosal foramen, blocks petrosal foramen, plays stifled slurry plug; Air in petrosal foramen and the rock gap prevents that from gas port 7 interior derivation slip casting is unreal.
Claims (4)
1. a Novel expansion allows and presses the prestressing force grouted anchor bar, it comprises the hollow bolt body of rod, pallet and nut, it is characterized in that, the front end of described anchor rod body is processed with greater than body of rod diameter and less than the taper head of bore diameter, put a diameter on the anchor rod body less than the expansion tube of taper head diameter, the expansion tube front end is provided with open slot, and the length of expansion tube should satisfy that front end withstands on the taper head, the rear end withstands on the nut; Anchor rod body at the open slot place is provided with a circle injected hole; Described pallet is comprised of two overlapping disk bodies that interlock, and one of them disk body has been to allow the dish-shaped shape disk body of pressure effect, and another disk body is be used to the loudspeaker head disk body that is blocked on the aperture.
2. Novel expansion as claimed in claim 1 allows and presses the prestressing force grouted anchor bar, it is characterized in that, be provided with wireway in the anchor pole hollow cavity, exposed junction is provided with gas port in the hole of anchor rod body, and wireway is communicated with gas port.
3. Novel expansion as claimed in claim 1 or 2 allows the using method of pressing the prestressing force grouted anchor bar, it is characterized in that, during use, at first beat the petrosal foramen consistent with the expansion tube external diameter at country rock, expansion tube is enclosed within on the anchor rod body puts in the petrosal foramen, load onto pallet, the nut of screwing on, during tray, pallet dish shape disk body is near nut; Behind the skyhook, the grouting equipment of special use is connected on the anchor rod body exposed junction, wall-rock crack is carried out slip casting, slurries are permeated to wall-rock crack.
4. Novel expansion as claimed in claim 1 or 2 allows the method for work of pressing the prestressing force grouted anchor bar, it is characterized in that, nut and pallet, expansion tube are in contact with one another in the process of nutting, anchor rod body is applied pulling force, and expansion tube produces the axial compression effect, and expansion tube is subjected to the impact of anchor rod body taper head, the open slot distending, be squeezed on the hole wall, increased the frictional force with hole wall, make integral body have certain anchorage effect; Pallet is subjected to nut shaft to pressure-acting simultaneously, and butterfly shape disk body is compressed, and whole bolt support is worked the pressure effect that allows, and loudspeaker head disk body is clamp-oned in the petrosal foramen, blocks petrosal foramen, plays stifled slurry plug; Air in petrosal foramen and the rock gap is derived in gas port, prevents that slip casting is unreal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210385308.3A CN102877867B (en) | 2012-09-26 | 2012-09-26 | Novel inflatable yielding pre-stress grouting anchor rod and usage method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210385308.3A CN102877867B (en) | 2012-09-26 | 2012-09-26 | Novel inflatable yielding pre-stress grouting anchor rod and usage method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102877867A true CN102877867A (en) | 2013-01-16 |
| CN102877867B CN102877867B (en) | 2015-07-15 |
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| CN201210385308.3A Active CN102877867B (en) | 2012-09-26 | 2012-09-26 | Novel inflatable yielding pre-stress grouting anchor rod and usage method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018863A (en) * | 2014-05-16 | 2014-09-03 | 山东科技大学 | Multi-section-expansion yielding prestress grouting anchor rod and using method thereof |
| CN106869978A (en) * | 2017-03-14 | 2017-06-20 | 中国十七冶集团有限公司 | A kind of tunnel hollow grouting anchor of the simple automatic exhaust device of band |
| CN106992365A (en) * | 2017-05-08 | 2017-07-28 | 河南中多科技发展有限公司 | A kind of expansion type earthing or grounding means and its earthing method |
| CN107059862A (en) * | 2017-06-11 | 2017-08-18 | 贵州大学 | It is a kind of that fixed butterfly fixed plate is aided in for anchor pole |
| CN107654249A (en) * | 2017-11-14 | 2018-02-02 | 淮南久辉工贸有限责任公司 | A kind of novel anchor rod, anchor cable combined type stop grouting plug |
| CN107780955A (en) * | 2017-12-15 | 2018-03-09 | 湖南科技大学 | A kind of controllable grouting and reinforcing device and construction method for breaking surrounding rock tunnel |
| CN108678789A (en) * | 2018-06-25 | 2018-10-19 | 王运来 | A kind of combined anchor |
| CN109083668A (en) * | 2018-08-20 | 2018-12-25 | 中钢集团马鞍山矿山研究院有限公司 | A kind of grouting and reinforcing anchor pole suitable for high stress breaking surrounding rock supporting |
| CN110331998A (en) * | 2019-07-24 | 2019-10-15 | 古小辉 | A kind of adaptive pressure release type grouted anchor bar |
| CN113738425A (en) * | 2021-10-15 | 2021-12-03 | 四川省交通勘察设计研究院有限公司 | Anchor rod body, grouting anchor rod and using method |
| CN114893235A (en) * | 2022-04-29 | 2022-08-12 | 福州大学 | Hollow scalelike grouting double expansion type anchor rod for crushing area |
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| US5017067A (en) * | 1989-05-29 | 1991-05-21 | Scantool Handelsbolag | Anchoring bolt device |
| US20020025230A1 (en) * | 2000-04-04 | 2002-02-28 | Jennmar Corporation | Three-prong shell |
| CN2809009Y (en) * | 2005-07-08 | 2006-08-23 | 吴德兴 | Expansion shell anchor rod for multifunctional stop-grouting plug |
| CN101054901A (en) * | 2007-06-19 | 2007-10-17 | 郑晓雯 | Bush bulging shell type self-drilling hollow anchor rod |
| CN101956561A (en) * | 2009-07-16 | 2011-01-26 | 李云义 | Expanding grouting bolt |
| CN202381109U (en) * | 2010-07-19 | 2012-08-15 | 伊利诺斯工具制品有限公司 | Self-drilling rock bolt |
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2012
- 2012-09-26 CN CN201210385308.3A patent/CN102877867B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5017067A (en) * | 1989-05-29 | 1991-05-21 | Scantool Handelsbolag | Anchoring bolt device |
| US20020025230A1 (en) * | 2000-04-04 | 2002-02-28 | Jennmar Corporation | Three-prong shell |
| CN2809009Y (en) * | 2005-07-08 | 2006-08-23 | 吴德兴 | Expansion shell anchor rod for multifunctional stop-grouting plug |
| CN101054901A (en) * | 2007-06-19 | 2007-10-17 | 郑晓雯 | Bush bulging shell type self-drilling hollow anchor rod |
| CN101956561A (en) * | 2009-07-16 | 2011-01-26 | 李云义 | Expanding grouting bolt |
| CN202381109U (en) * | 2010-07-19 | 2012-08-15 | 伊利诺斯工具制品有限公司 | Self-drilling rock bolt |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018863A (en) * | 2014-05-16 | 2014-09-03 | 山东科技大学 | Multi-section-expansion yielding prestress grouting anchor rod and using method thereof |
| CN106869978A (en) * | 2017-03-14 | 2017-06-20 | 中国十七冶集团有限公司 | A kind of tunnel hollow grouting anchor of the simple automatic exhaust device of band |
| CN106992365B (en) * | 2017-05-08 | 2023-04-28 | 河南中多科技发展有限公司 | Expansion type grounding device and grounding method thereof |
| CN106992365A (en) * | 2017-05-08 | 2017-07-28 | 河南中多科技发展有限公司 | A kind of expansion type earthing or grounding means and its earthing method |
| CN107059862A (en) * | 2017-06-11 | 2017-08-18 | 贵州大学 | It is a kind of that fixed butterfly fixed plate is aided in for anchor pole |
| CN107654249A (en) * | 2017-11-14 | 2018-02-02 | 淮南久辉工贸有限责任公司 | A kind of novel anchor rod, anchor cable combined type stop grouting plug |
| CN107780955A (en) * | 2017-12-15 | 2018-03-09 | 湖南科技大学 | A kind of controllable grouting and reinforcing device and construction method for breaking surrounding rock tunnel |
| CN107780955B (en) * | 2017-12-15 | 2023-05-26 | 湖南科技大学 | Controllable grouting reinforcement device for breaking surrounding rock roadway and construction method |
| CN108678789A (en) * | 2018-06-25 | 2018-10-19 | 王运来 | A kind of combined anchor |
| CN108678789B (en) * | 2018-06-25 | 2024-03-15 | 王运来 | Combined anchor rod |
| CN109083668A (en) * | 2018-08-20 | 2018-12-25 | 中钢集团马鞍山矿山研究院有限公司 | A kind of grouting and reinforcing anchor pole suitable for high stress breaking surrounding rock supporting |
| CN109083668B (en) * | 2018-08-20 | 2020-05-19 | 中钢集团马鞍山矿山研究院有限公司 | Be suitable for slip casting reinforcing stock of high stress broken country rock support usefulness |
| CN110331998A (en) * | 2019-07-24 | 2019-10-15 | 古小辉 | A kind of adaptive pressure release type grouted anchor bar |
| CN113738425A (en) * | 2021-10-15 | 2021-12-03 | 四川省交通勘察设计研究院有限公司 | Anchor rod body, grouting anchor rod and using method |
| CN114893235B (en) * | 2022-04-29 | 2023-02-10 | 福州大学 | Hollow scalelike grouting double-expansion anchor rod for crushing area |
| CN114893235A (en) * | 2022-04-29 | 2022-08-12 | 福州大学 | Hollow scalelike grouting double expansion type anchor rod for crushing area |
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| CN102877867B (en) | 2015-07-15 |
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