CN203559918U - Mining spacing distribution energy absorption super long combined anchor rod - Google Patents
Mining spacing distribution energy absorption super long combined anchor rod Download PDFInfo
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- CN203559918U CN203559918U CN201320674600.7U CN201320674600U CN203559918U CN 203559918 U CN203559918 U CN 203559918U CN 201320674600 U CN201320674600 U CN 201320674600U CN 203559918 U CN203559918 U CN 203559918U
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Abstract
The utility model discloses a mining spacing distribution energy absorption super long combined anchor rod which comprises a high intensity thread steel anchor rod, a shearing and energy absorbing component, a flexible connecting component, a thin-walled plastic sleeve pipe, a metal pallet, an injection pipe, a grout stop plug and a pre-tightening nut, wherein the shearing and energy absorbing component is connected with the flexible connecting component, one end of the high intensity thread steel anchor rod is connected with the shearing and energy absorbing component, the other end of the high intensity thread steel anchor rod is connected with the flexible connecting component, the shearing and energy absorbing component comprises a sliding drum, a sliding cylinder and a shearing plug pin, internal threads are formed in one end of the sliding drum, an inward protruding circular truncated cone structure is arranged at the other end of the sliding drum, external threads are formed in one end of the sliding cylinder, an outward protruding circular truncated cone structure is arranged at the other end of the sliding cylinder, a sliding slot matched with the shearing plug pin is arranged at the inner lower part of the outward protruding circular truncated cone structure, and the thin-walled plastic sleeve pipe is mounted at the outer part of the cylindrical rod body of the flexible connecting component.
Description
Technical field
The utility model relates to coal mine support security fields, is specifically related to a kind of mining energy-absorption type superlong array anchor pole spaced apart.
Background technology
Coal enters deep mining, tunnel presents significant large deformation feature, particularly high seam and is subject to the development heading of mining influence and impacts roadway with large deformation or soft rock large deformation tunnel under pressure ring border, highland, because lane space is narrow and small, rock-bolt length is limited, common bolt anchoring scope is little, the extraneous deep wall rock distortion of uncontrollable anchoring, and traditional twisted steel anchor rod rigidity is large, supporting intensity is high, but ductility is little, resistance capacity to deformation is poor, cannot adapt to large deformation of roadway requirement.How to solve and impact large deformation and soft rock large deformation supporting roadway surrounding rock and be stable into problem and become great difficult problem urgently to be resolved hurrily.
At present, for impacting large deformation or soft rock large deformation tunnel, adopt energy-absorption anchor rod or extra long anchor bar control country rock more.Energy-absorption anchor rod, as at the disclosed a kind of shearing sleeve type yielding bolt of number of patent application 201110332484, the disclosed a kind of Fast Installation effective energy-absorbing mine anchor rod of number of patent application 201210118241 etc., the single endergonic structure of the many employings of such anchor pole, endergonic structure is positioned at end of anchor rod or head end, deformation of the surrounding rock in tunnel can be concentrated and act on single energy-absorbing member place, when deformation energy exceedes its energy-absorbing limit, the easy disrumpent feelings inefficacy of anchor pole.Extra long anchor bar, as at the disclosed a kind of extra long anchor bar of patent No. 201835847U, between anchor head and anchor tail, be provided with at least one connecting portion, anchor head is connected with anchor tail, this anchor pole can be controlled deep wall rock and is out of shape and efficiently solves the problem that can not use long anchor pole due to insufficient spaces such as tunnels, but anchor pole entirety belongs to rigidity does not possess energy-absorbing function, for roadway with large deformation, exist and regulate deflection limited, can not allow large deformation.Mining points out that with safety first engineering journal (2009, the 4th phase) roadway with large deformation requirement support unit must possess high strength, large rigidity and certain flexibility simultaneously, guarantees the high strength support of support system and allows two powerfuls of pressing.
Summary of the invention
It is large that the technical problems to be solved in the utility model is to provide a kind of control country rock scope, possesses multi-point every distributed energy-absorbing function, can effectively guide release and the conversion of controlling energy, high energy is flexibly connected in the stretcher strain process of member at shear failure and each position of each shearing latch, energy consumption disperses, the energy-absorbing member rupture failure of certain does not affect the anchoring effect at other positions, whole anchor pole adopts total length slip casting anchoring, possess and step down fast and constant-resistance energy-absorbing function, simple in structure, the energy-absorption type superlong array anchor pole mining spaced apart of making and easy construction.
For addressing the above problem, the utility model adopts following technical scheme:
A kind of mining energy-absorption type superlong array anchor pole spaced apart, comprise high-strength deformed steel bar anchor pole, shear energy-absorbing parts, flexible attachment components, thin-walled plastic sleeve pipe, metal tray, Grouting Pipe, stop grouting plug and pre-load nut, described shear energy-absorbing parts are connected with flexible attachment components, described high-strength deformed steel bar anchor pole one end is connected with shear energy-absorbing parts, the other end is connected with flexible attachment components, described shear energy-absorbing parts are by sliding cylinder, sliding cylinder and shearing latch composition, described sliding cylinder one end is provided with internal thread, the other end is provided with convex frustum cone structure, described sliding cylinder one end is provided with external screw thread, the other end is provided with evagination frustum cone structure, in evagination frustum cone structure bottom, be provided with the sliding tray matching with described shearing latch, described thin-walled plastic sleeve pipe is arranged on the cylindrical bar external body of flexible attachment components.
As preferred technical scheme, described flexible attachment components is made by the good steel matter of ductility, two ends are is with female tubular structure, the external diameter of two ends tubular structure is greater than high-strength screw-thread steel bolt diameter and is less than rockbolt installation bore diameter, middle part is the cylindrical body of rod, and cylindrical body of rod diameter equals or is slightly smaller than high-strength deformed steel bar bolt diameter.
As preferred technical scheme, the number of described shear energy-absorbing parts and flexible attachment components can be in conjunction with the length setting of superlong array rock-bolt length and high-strength deformed steel bar anchor pole, the length of described connecting elements is definite according to surrouding rock deformation feature and energy-absorbing requirement, and described flexible attachment components can be used alone and also can coordinate shear energy-absorbing member to use.
As preferred technical scheme, described shearing latch is made by metal material, and shears the intensity of latch and lay spacing and can adjust as required.
As preferred technical scheme, described high-strength deformed steel bar rock-bolt length is between 1～2.4m.
As preferred technical scheme, the interval laying along its length of described sliding cylinder is some to circular aperture, and the aperture size of described circular aperture matches with shearing latch diameter.
As preferred technical scheme, described high-strength deformed steel bar anchor pole head and the tail two ends are provided with the external screw thread matching with described flexible attachment components and shear energy-absorbing parts.
The beneficial effect of a kind of mining energy-absorption type superlong array anchor pole spaced apart of the utility model is: utilize shear energy-absorbing parts with flexible attachment components, high-strength deformed steel bar anchor pole to be connected, whole anchor pole has the distributed energy-absorbing function of stepping down fast of multiple spot, can effectively guide release and the conversion of controlling energy, by high energy in the shear failure of each shearing latch with respectively flexibly connect in the stretcher strain process of member, effectively resist the impact of soft rock large deformation or impact large deformation, guarantee the stable of roadway surrounding rock and support system; Owing to adopting full length fastening, on the basis that guarantees support system bulk strength, certain flexibly connects member rupture failure and does not affect the anchoring effect at other positions; Extra long anchor bar can be controlled wider failure and deformation of surrounding rocks, be specially adapted to high seam mining influence tunnel and impact roadway with large deformation or large soft rock distortion tunnel, before use, extra long anchor bar is in disintegration state, during use, utilize jumbolter automatically by root, to connect pretension in boring, effectively avoid because of the little problem that can not use extra long anchor bar in the spaces such as tunnel.
Accompanying drawing explanation
Fig. 1 is the mining energy-absorption type superlong array anchor structure schematic diagram spaced apart of one of the present utility model;
Fig. 2 is the shear energy-absorbing modular construction schematic diagram of a kind of mining energy-absorption type superlong array anchor pole spaced apart of the utility model;
Fig. 3 is shear energy-absorbing components A-A sectional drawing of a kind of mining energy-absorption type superlong array anchor pole spaced apart of the utility model;
Fig. 4 is the flexible attachment components structural representation of a kind of mining energy-absorption type superlong array anchor pole spaced apart of the utility model;
Fig. 5 is the high-strength deformed steel bar anchor structure schematic diagram of a kind of mining energy-absorption type superlong array anchor pole spaced apart of the utility model.
In figure: 1-pre-load nut; 2-metal tray; 3-stop grouting plug; 4-Grouting Pipe; 5-high-strength deformed steel bar anchor pole; 6-shear energy-absorbing parts; 6-1 sliding cylinder; 6-2 sliding cylinder 6-3 sliding tray; 6-4 shears latch; 7-flexible attachment components; 7-1 two ends band internal thread tubular structure; 7-2 thin-walled plastic sleeve pipe; 8-anchoring slurry; 9-rock mass; 10-internal thread; 11-convex frustum cone structure.
The specific embodiment
Consult the mining energy-absorption type superlong array anchor pole spaced apart of the one shown in Fig. 1 to Fig. 5, comprise high-strength deformed steel bar anchor pole 5, shear energy-absorbing parts 6, flexible attachment components 7, thin-walled plastic sleeve pipe 7-2, metal tray 2, Grouting Pipe 4, stop grouting plug 3 and pre-load nut 1, described shear energy-absorbing parts 6 are connected with flexible attachment components 7, described high-strength deformed steel bar anchor pole 5 one end are connected with shear energy-absorbing parts 6, the other end is connected with flexible attachment components 7, described shear energy-absorbing parts 6 are by sliding cylinder 6-1, sliding cylinder 6-2 and shearing latch 6-4 composition, described sliding cylinder 6-1 one end is provided with internal thread 10, the other end is provided with convex frustum cone structure 11, described sliding cylinder 6-2 one end is provided with external screw thread (not shown), the other end is provided with evagination frustum cone structure (not shown), in evagination frustum cone structure bottom, be provided with the sliding tray 6-3 matching with described shearing latch 6-4, described thin-walled plastic sleeve pipe 7-2 is arranged on the cylindrical bar external body of flexible attachment components 7.
Described flexible attachment components 7 is made by the good steel matter of ductility, two ends are is with female tubular structure, the external diameter of two ends tubular structure is greater than high-strength screw-thread steel bolt diameter and is less than rockbolt installation bore diameter, middle part is the cylindrical body of rod, and cylindrical body of rod diameter equals or is slightly smaller than high-strength deformed steel bar bolt diameter.
The number of described shear energy-absorbing parts and flexible attachment components can be in conjunction with the length setting of superlong array rock-bolt length and high-strength deformed steel bar anchor pole, the length of described connecting elements is definite according to surrouding rock deformation feature and energy-absorbing requirement, and described flexible attachment components can be used alone and also can coordinate shear energy-absorbing member to use.
Described shearing latch 6-4 is made by metal material, and shears the intensity of latch 6-4 and lay spacing and can adjust as required, and then changes assembled bolt shear energy-absorbing resistance.
Described high-strength deformed steel bar anchor pole 5 length are between 1～2.4m.
Described sliding cylinder 6-1 interval laying is along its length some to circular aperture (not shown), and the aperture size of described circular aperture (not shown) matches with shearing latch diameter.
Described high-strength deformed steel bar anchor pole 5 head and the tail two ends are provided with the external screw thread (not shown) matching with described flexible attachment components 7 and shear energy-absorbing parts 6, shear energy-absorbing parts 6 adopt thread connecting mode that many high-strength deformed steel bar anchor pole head and the tail are connected with flexible attachment components 7, whole anchor pole adopts total length slip casting anchoring, possess and step down fast and constant-resistance energy-absorbing function, and the energy-absorbing member rupture failure of certain does not affect the anchoring effect at other positions.
Further, described sliding cylinder one end is for being provided with internal thread for connecting high-strength screw-thread steel anchor pole, the other end is provided with the frustum cone structure of convex, for anti-skidding cylinder, departs from sliding cylinder, and sliding cylinder interval laying is along its length some is used for installing shearing latch to circular aperture.
Further, described sliding cylinder one end is provided with external screw thread for connecting flexible energy absorbing component, the frustum cone structure acting in conjunction anti-skidding cylinder that the other end is provided with evagination frustum cone structure and sliding cylinder departs from sliding cylinder, in evagination frustum cone structure bottom, be provided with and the sliding tray of shearing latch and adapting, after shearing that latch is stressed and cutting off, realize the quick sliding of the body of rod and step down.
Further, described sliding cylinder is set on sliding cylinder by shearing the axial restraint of latch realization and sliding cylinder.
Further, the cylindrical bar external body cover of described flexible attachment components has thin-walled plastic sleeve pipe, for the bonding of isolated flexible connecting elements and country rock, guarantees freely to stretch under its swelling stress effect producing in country rock large deformation.
Further, the distributed energy-absorption anchor rod length of described overlength is definite according to surrouding rock deformation scope, and high-strength deformed steel bar rock-bolt length can adjust accordingly as required between 1～2.4m.
Further, the number of described shear energy-absorbing parts and flexible attachment components can be in conjunction with the length setting of superlong array rock-bolt length and high-strength deformed steel bar anchor pole, the length of described connecting elements is definite according to surrouding rock deformation feature and energy-absorbing requirement, and described flexible attachment components can be used alone and also can coordinate shear energy-absorbing member to use.
Further, take substep full length fastening during described one is mining energy-absorption type superlong array rockbolt installation spaced apart, the first step, adopts resin explosive roll end anchorage, and second step is to remainder body of rod total length slip casting anchoring.
Below in conjunction with Fig. 1 to Fig. 5, use procedure of the present utility model is described: during use, the first step: according to design rock-bolt length, select the boring of respective diameters construction rockbolt installation.Second step: drilling construction is complete, in boring, put into a resin anchoring agent, utilize shear energy-absorbing parts and flexible attachment components to be connected piecemeal high-strength screw-thread steel anchor pole and push in turn boring inside, then Grouting Pipe, stop grouting plug, metal tray, pre-load nut are installed successively.The 3rd step: utilize rockbolt installation facility to rotate anchor rod stirring resin explosive roll after each member installs, tighten pre-load nut, implement first step anchoring, apply certain initial prestressing force to country rock.Finally, all the other section of body of rod adopted to total length slip casting anchoring, strengthen the bulk strength of support system.For impacting roadway with large deformation, when occurring to impact large deformation, the shearing latch of spaced apart shear energy-absorbing member is cut off by sliding cylinder under impact force action, sliding cylinder glides rapidly, realize the energy-absorbing of stepping down fast, flexibly connect member stretcher strain in deformation process, by deformation energy consumption in the stretcher strain process that flexibly connects member, realizing constant-resistance energy-absorbing steps down, and high-strength screw-thread steel anchor pole resists surrouding rock deformation, keep Surrounding Rock Strength, for the soft rock large deformation tunnel that does not need to step down fast, can be used alone and flexibly connect member connection high-strength deformed steel bar anchor pole, soft rock large deformation consumption flexibly connects in the stretcher strain process of member at each, realize the controlled distribution formula consumption of country rock large deformation energy.Whole anchor pole has multi-point every the distributed energy-absorbing function of stepping down, can effectively guide release and the conversion of controlling energy, deformation of the surrounding rock in tunnel can be consumed to multiple energy-absorbing members place default in support system, indivedual energy-absorbing member rupture failures do not affect the anchoring effect at other positions, support system can all not lose efficacy, well solve common energy-absorption anchor rod and because energy absorption ability is not enough, caused the whole Problem of Failure of support system, mining energy-absorption type superlong array anchor pole spaced apart is specially adapted to high seam mining influence tunnel and impacts roadway with large deformation or soft rock large deformation tunnel, effectively resist the impact of soft rock large deformation or impact large deformation.
The beneficial effect of a kind of mining energy-absorption type superlong array anchor pole spaced apart of the utility model is: utilize shear energy-absorbing parts with flexible attachment components, high-strength deformed steel bar anchor pole to be connected, whole anchor pole has the distributed energy-absorbing function of stepping down fast of multiple spot, can effectively guide release and the conversion of controlling energy, by high energy in the shear failure of each shearing latch with respectively flexibly connect in the stretcher strain process of member, effectively resist the impact of soft rock large deformation or impact large deformation, guarantee the stable of roadway surrounding rock and support system; Owing to adopting full length fastening, on the basis that guarantees support system bulk strength, certain flexibly connects member rupture failure and does not affect the anchoring effect at other positions; Extra long anchor bar can be controlled wider failure and deformation of surrounding rocks, be specially adapted to high seam mining influence tunnel and impact roadway with large deformation or large soft rock distortion tunnel, before use, extra long anchor bar is in disintegration state, during use, utilize jumbolter automatically by root, to connect pretension in boring, effectively avoid because of the little problem that can not use extra long anchor bar in the spaces such as tunnel.
The above, be only the specific embodiment of the present utility model, but protection domain of the present utility model is not limited to this, and any variation of expecting without creative work or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain that claims were limited.
Claims (7)
1. a mining energy-absorption type superlong array anchor pole spaced apart, it is characterized in that: comprise high-strength deformed steel bar anchor pole, shear energy-absorbing parts, flexible attachment components, thin-walled plastic sleeve pipe, metal tray, Grouting Pipe, stop grouting plug and pre-load nut, described shear energy-absorbing parts are connected with flexible attachment components, described high-strength deformed steel bar anchor pole one end is connected with shear energy-absorbing parts, the other end is connected with flexible attachment components, described shear energy-absorbing parts are by sliding cylinder, sliding cylinder and shearing latch composition, described sliding cylinder one end is provided with internal thread, the other end is provided with convex frustum cone structure, described sliding cylinder one end is provided with external screw thread, the other end is provided with evagination frustum cone structure, in evagination frustum cone structure bottom, be provided with the sliding tray matching with described shearing latch, described thin-walled plastic sleeve pipe is arranged on the cylindrical bar external body of flexible attachment components.
2. mining energy-absorption type superlong array anchor pole spaced apart according to claim 1, it is characterized in that: described flexible attachment components is made by the good steel matter of ductility, two ends are is with female tubular structure, the external diameter of two ends tubular structure is greater than high-strength screw-thread steel bolt diameter and is less than rockbolt installation bore diameter, middle part is the cylindrical body of rod, and cylindrical body of rod diameter equals or is slightly smaller than high-strength deformed steel bar bolt diameter.
3. mining energy-absorption type superlong array anchor pole spaced apart according to claim 1, it is characterized in that: the number of described shear energy-absorbing parts and flexible attachment components can be in conjunction with the length setting of superlong array rock-bolt length and high-strength deformed steel bar anchor pole, the length of described connecting elements is definite according to surrouding rock deformation feature and energy-absorbing requirement, and described flexible attachment components can be used alone and also can coordinate shear energy-absorbing member to use.
4. mining energy-absorption type superlong array anchor pole spaced apart according to claim 1, is characterized in that: described shearing latch is made by metal material, and shears the intensity of latch and lay spacing and can adjust as required.
5. mining energy-absorption type superlong array anchor pole spaced apart according to claim 1, is characterized in that: described high-strength deformed steel bar rock-bolt length is between 1～2.4m.
6. mining energy-absorption type superlong array anchor pole spaced apart according to claim 1, is characterized in that: the interval laying along its length of described sliding cylinder is some to circular aperture, and the aperture size of described circular aperture matches with shearing latch diameter.
7. mining energy-absorption type superlong array anchor pole spaced apart according to claim 1, is characterized in that: described high-strength deformed steel bar anchor pole head and the tail two ends are provided with the external screw thread matching with described flexible attachment components and shear energy-absorbing parts.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320674600.7U CN203559918U (en) | 2013-10-21 | 2013-10-21 | Mining spacing distribution energy absorption super long combined anchor rod |
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| CN201320674600.7U CN203559918U (en) | 2013-10-21 | 2013-10-21 | Mining spacing distribution energy absorption super long combined anchor rod |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103541750A (en) * | 2013-10-21 | 2014-01-29 | 辽宁工程技术大学 | Alternately-distributed energy-absorbing overlength combined anchor rod for mining and application method |
| CN110145350A (en) * | 2019-06-05 | 2019-08-20 | 北京矿冶科技集团有限公司 | A kind of pulling force dispersing type twin-stage constant-resistance stress release anchor pole |
-
2013
- 2013-10-21 CN CN201320674600.7U patent/CN203559918U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103541750A (en) * | 2013-10-21 | 2014-01-29 | 辽宁工程技术大学 | Alternately-distributed energy-absorbing overlength combined anchor rod for mining and application method |
| CN103541750B (en) * | 2013-10-21 | 2016-04-20 | 辽宁工程技术大学 | A kind of mining energy-absorption type superlong array anchor pole spaced apart |
| CN110145350A (en) * | 2019-06-05 | 2019-08-20 | 北京矿冶科技集团有限公司 | A kind of pulling force dispersing type twin-stage constant-resistance stress release anchor pole |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140423 Termination date: 20161021 |
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| CF01 | Termination of patent right due to non-payment of annual fee |