CN107269302A - A kind of self-locking tunnel top side suspension device - Google Patents

A kind of self-locking tunnel top side suspension device Download PDF

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Publication number
CN107269302A
CN107269302A CN201710610992.3A CN201710610992A CN107269302A CN 107269302 A CN107269302 A CN 107269302A CN 201710610992 A CN201710610992 A CN 201710610992A CN 107269302 A CN107269302 A CN 107269302A
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CN
China
Prior art keywords
suspension device
rod
tunnel top
side suspension
strength steel
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Granted
Application number
CN201710610992.3A
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Chinese (zh)
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CN107269302B (en
Inventor
王宏伟
肖博
方婷婷
白慧芳
闫鑫
徐成
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China University of Mining and Technology Beijing CUMTB
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China University of Mining and Technology Beijing CUMTB
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Priority to CN201710610992.3A priority Critical patent/CN107269302B/en
Publication of CN107269302A publication Critical patent/CN107269302A/en
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00Caps for supporting mine roofs

Abstract

The present invention relates to a kind of self-locking tunnel top side suspension device, including two high-strength steel strips and Duo Gen supporting bar assemblies, the high strength steel band is provided with the equidistant circular groove that is adapted with branch guard bar, and the circular groove of the two ends of the supporting bar assembly respectively with two high-strength steel strips is connected.The support system of the high-strength steel strip and supporting bar assembly composition supporting effect overall by both are played in the present invention, the region strengthening supporting that side produces stress concentration is pushed up to tunnel, prevents the deformation of top side.

Description

A kind of self-locking tunnel top side suspension device
Technical field
The present invention relates to roadway support apparatus field, specifically, it is related to a kind of self-locking tunnel top side suspension device.
Background technology
Rich coal resources of China, but for a long time, the extensive Coal Industry Development pattern of China and extensive Mining work activities so that coal in China exploitation extended downwardly using the speed of annual 8-12 meters (10-20m is in some areas), colliery Roadway surrounding rock pressure is obvious acutely, roadway deformation aggravation, larger or deformation of weak surrounding rock is even more especially for degree of crushing So.Therefore, the safety and high efficiency of coal resources and supporting roadway surrounding rock technology are closely related.
The existing very long developing history of supporting roadway surrounding rock technology, it is especially nearly 50 years since, multi-form and content Experiment, actual measurement and research etc. are very active, and in roadway layout, tunnel protection, unloading blast and roadway support and monitoring etc. Various aspects all achieve great successes.Representative theory abroad has the classic pressure reason grown up early 20th century By, collapse arch theoretical, New Austrian Tunneling Method and energy support theory etc..The achievement of domestic scholars has lithology Transformation Theory, combined supporting Technology, Supporting Theory of Broken Rock Zone and engineering m echanics ofsoftrock support theory etc..In above support theory, Support Resistance is to control country rock Deformation failure play decisive role, under the conditions of rated load, the higher rock deformation of Support Resistance is smaller.
In the design planning of coal mine roadway, the use of rectangular shaped roadways is quite varied.Rectangle is due to two, top angle point Stress concentration degree is higher, and deformation is very violent, causes the large deformation of tunnel top side.Research shows, because rectangular shaped roadways two The limitation of side top side small space, is used alone the roadway surrounding rock control technologies pair such as anchor shaft anchor cable, Bolt net and jet or U-shaped steel supporting When the large deformation problem of tunnel top side is solved, it is impossible to which enough Support Resistances are provided.And by increasing anchor pole density and the body of rod Intensity causes the serious waste of support material.
In summary, tunnel is in process of deformation and failure, the deformation of top side be it is the most violent, existing support technology without Method provides enough Support Resistances, limited to reinforcing top effect.
The content of the invention
The technical problems to be solved by the invention are that there is provided a kind of self-locking roadway support in view of the shortcomings of the prior art Bar.
The technical scheme that the present invention solves above-mentioned technical problem is as follows:
The present invention provides a kind of tunnel top side suspension device, including two high-strength steel strips and Duo Gen supporting bar assemblies, institute State high strength steel band and be provided with the circular groove that is adapted with supporting bar assembly, the two ends of the supporting bar assembly respectively with two The circular groove of high-strength steel strip is connected.
The beneficial effects of the invention are as follows:The tunnel top side suspension device of the present invention can be by some by two high-strength steel bands Self-locking supporting bar assembly connects and forms a supporting entirety, plurality of rods part is played integrated supporting effect, tunnel is enclosed Rock produces the region strengthening supporting of stress concentration, prevents the deformation of top side.
Further, the branch guard bar includes first body of rod and second body of rod, one end of first body of rod and second body of rod One end connected by threaded self-locking.
Further, first body of rod includes the first bar body and threaded connection section, and first bar body and screw thread connect Being integrally formed for section is connect, the threaded connection section is provided with external screw thread.
Further, second body of rod includes the second bar body and screw nipple, and second bar body and screw thread connect Being integrally formed for adapter, is provided with the internal thread being adapted with external screw thread in the screw nipple.
The beneficial effect of above-mentioned further scheme is:Pass through twisting for the first rod member and the second rod member, the length of branch guard bar Degree is adjustable, is applicable to the roadway support of different in width;And it can be applied according to friction self-locking principle at the two ends of branch guard bar Plus pressure it is no matter much, branch guard bar all without occur axial crushing deformation, realize to tunnel push up side support reinforcement.
Further, the externally threaded depth is be threadedly coupled section diameter 0.1-0.15 times.
Further, the externally threaded tangent line and the angle α between the plane of your axis of first body of rod arrive for 5 30°
Further, in addition to gauze fabric layer, gauze fabric layer is wrapped in the outside of first body of rod and second body of rod.
Further, the gauze fabric layer is made up of elastic wire or elastic copper wire, and the gauze fabric layer has bullet Property.
Further, in addition to anticorrosive coat, the anticorrosive coat is set in the outside of gauze fabric layer, and the anticorrosive coat is by rubber Or latex is made, the anticorrosive coat is brought into close contact with gauze fabric layer.
Further, the multiple circular groove equidistantly distributed on high-strength steel strip.
Further, the diameter of the circular groove on the high-strength steel band is equal to the external diameter of supporting bar assembly.
The beneficial effect of above-mentioned further scheme is:The circular groove of equidistantly distributed is engaged with supporting bar assembly, Being uniformly distributed for stress is ensure that, so as to preferably realize the supporting to tunnel.
Brief description of the drawings
Fig. 1 helps the structural representation of suspension device for the tunnel top of the present invention;
Fig. 2 is the structural representation of the supporting bar assembly of the present invention;
Fig. 3 is the enlarged drawing at Fig. 2 A positions;
Fig. 4 is the cross-sectional view of the supporting bar assembly of the present invention
Fig. 5 is the structural representation of the high-strength steel strip of the present invention;
Fig. 6 is the structural representation of the gauze fabric layer of the present invention.
Embodiment
The principle and feature of the present invention are described below in conjunction with accompanying drawing, the given examples are served only to explain the present invention, and It is non-to be used to limit the scope of the present invention.
As shown in figure 1, the present invention provides a kind of tunnel top side suspension device, including two high-strength steel strips 5 and Duo Gen branch Guard bar component, the high-strength steel strip 5 is provided with the circular groove 51 being adapted with supporting bar assembly, the supporting bar assembly Two ends are connected with the circular groove 51 of two high-strength steel strips 5 respectively.Suspension device is helped by high intensity in the tunnel top of the present invention Steel band and the formation supporting of supporting bar assembly are overall, and the region strengthening supporting of stress concentration is produced to roadway surrounding rock, prevent top side from becoming Shape, wherein high-strength steel strip can directly be bought by upper above, facilitate durable.
As shown in Fig. 2 the supporting bar assembly includes first body of rod 1 and second body of rod 2, one end of first body of rod 1 Connected with one end of second body of rod 2 by threaded self-locking.As shown in figure 3, locking phenomenon refers to if acting on the master of object Power make a concerted effort F position within angle of friction α (angle of friction α tangent value be equal to material coefficient of friction, i.e. tan α=f, F is material friction coefficient.), then no matter how big this power is, always has a staff cultivation counter-force F ' to balance therewith, and object keeps quiet Only;, whereas if the F that makes a concerted effort of active force position is outside angle of friction, then no matter how small this power is, and object is also impossible to Keep balance.It is this unrelated with power size and the equilibrium condition relevant with angle of friction is referred to as condition of self-locking.Object is in this condition Under equilibrium appearance be referred to as locking phenomenon.
First body of rod 1 includes the first bar body 11 and threaded connection section 12, and first bar body 11 and screw thread connect Being integrally formed for section 12 is connect, the threaded connection section 12 is provided with external screw thread 13.
Second body of rod 2 includes the second bar body 21 and screw nipple 22, and second bar body 21 and screw thread connect Being integrally formed for adapter 22, is provided with the internal thread 23 being adapted with external screw thread in the screw nipple 22.Internal thread and outer spiral shell The adaptation connection of line, further ensures the realization of locking phenomenon.
Thus, twisting by screw thread, the adjustable in length of supporting bar assembly, so being applicable to the tunnel of different in width Supporting;In addition, according to self-lock mechanism, the power applied at the two ends of supporting bar assembly is big in any case, supporting bar assembly all without Generation axial deformation.
The depth of the external screw thread 13 is 0.1-0.15 times of threaded connection section diameter.This depth of thread both ensure that certainly The realization of phenomenon is locked, can guarantee that in control supporting bar assembly length and tunnel be accessories again, it is easy to operate.
The tangent line of the external screw thread 23 and angle α between the plane of your axis of first body of rod are 5 to 30 °.
As shown in figure 4, also including gauze fabric layer 3, the gauze fabric layer 3 is wrapped in first body of rod 1 and second body of rod 2 Outside.The supporting bar assembly that is set to of gauze fabric layer has done dual fail-safe, further strengthens the tunnel top side of the present invention The intensity of suspension device.
The gauze fabric layer 3 is made up of elastic wire or elastic copper wire, and 3 layers of the gauze fabric is flexible.Such as Shown in Fig. 6, the elastic knitmesh is formed using the weaving method braiding of warp parallel, so it is equal in axially and radially direction With certain elasticity, and flexible gauze fabric layer preferably can be adapted to body of rod laminating.
As shown in figure 4, also including anticorrosive coat 4, the anticorrosive coat 4 is set in the outside of gauze fabric layer 3, the anticorrosive coat 4 are made up of rubber or latex, and the anticorrosive coat 4 is brought into close contact with gauze fabric layer 3.The setting of anticorrosive coat can slow down the body of rod Aging speed with web layer is so as to extend the service life of suspension device.
As shown in figure 5, the multiple circular groove equidistantly distributed on high-strength steel strip.Equally distributed circular groove It is also equally distributed to show the supporting bar assembly being adapted to therewith, and the distribution of such power is more uniform, is more favorable for tunnel top side Supporting.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.

Claims (10)

1. a kind of tunnel top side suspension device, it is characterised in that including two high-strength steel strips (5) and many supporting bar assemblies, The high-strength steel strip (5) is provided with the circular groove (51) being adapted with supporting bar assembly, the two ends of the supporting bar assembly The circular groove (51) with two high-strength steel strips (5) is connected respectively.
2. side suspension device in tunnel top according to claim 1, it is characterised in that the supporting bar assembly includes the first bar Body (1) and second body of rod (2), one end of first body of rod (1) and one end of second body of rod (2) are connected by threaded self-locking Connect.
3. side suspension device in tunnel top according to claim 2, it is characterised in that first body of rod (1) includes first Being integrally formed for bar body (11) and threaded connection section (12), first bar body (11) and threaded connection section (12), it is described It is threadedly coupled section (12) and is provided with external screw thread (13).
4. side suspension device in tunnel top according to claim 3, it is characterised in that second body of rod (2) includes second Bar body (21) and screw nipple (22), being integrally formed for second bar body (21) and screw nipple (22) are described Provided with the internal thread (23) being adapted with external screw thread in screw nipple (22).
5. side suspension device in tunnel top according to claim 3, it is characterised in that the depth of the external screw thread (13) is spiral shell 0.1-0.15 times of line linkage section diameter.
6. side suspension device in tunnel top according to claim 3, it is characterised in that the tangent line of the external screw thread (23) is with hanging down Directly the angle α between the plane of your axis of first body of rod is 5 to 30 °.
7. according to any described tunnel top side suspension devices of claim 1-6, it is characterised in that also including gauze fabric layer (3), the gauze fabric layer (3) is wrapped in the outside of first body of rod (1) and second body of rod (2).
8. side suspension device in tunnel top according to claim 7, it is characterised in that the gauze fabric layer (3) is by elasticity Steel wire or elastic copper wire are made, and gauze fabric (3) layer is flexible;Also include anticorrosive coat (4), the anticorrosive coat (4) The outside of gauze fabric layer (3) is set in, the anticorrosive coat (4) is made up of rubber or latex, the anticorrosive coat (4) and metal Web layer (3) is brought into close contact.
9. help suspension device according to claim 1-6,8 any described being pushed up from tunnel, it is characterised in that the multiple circle is recessed Groove equidistantly distributed on high-strength steel strip.
10. side suspension device in tunnel top according to claim 1, it is characterised in that circular recessed on the high-strength steel band The diameter of groove is equal to the external diameter of supporting bar assembly.
CN201710610992.3A 2017-07-25 2017-07-25 A kind of self-locking tunnel top side suspension device Active CN107269302B (en)

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CN201710610992.3A CN107269302B (en) 2017-07-25 2017-07-25 A kind of self-locking tunnel top side suspension device

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Application Number Priority Date Filing Date Title
CN201710610992.3A CN107269302B (en) 2017-07-25 2017-07-25 A kind of self-locking tunnel top side suspension device

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CN107269302A true CN107269302A (en) 2017-10-20
CN107269302B CN107269302B (en) 2019-12-03

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11280397A (en) * 1998-03-30 1999-10-12 Super Resin Kogyo Kk Lock bolt structural body
CN202090926U (en) * 2011-05-10 2011-12-28 中国华冶科工集团有限公司 Support for down-hole rail roadway formwork
CN202266277U (en) * 2011-08-26 2012-06-06 鹤壁煤业二矿有限责任公司 Contractible strut for U-shaped shed support
CN102733820A (en) * 2012-07-05 2012-10-17 山东新阳能源有限公司 Gob-side entry retaining support wall and integrated construction method thereof
CN104153798A (en) * 2014-07-31 2014-11-19 山东华联矿业股份有限公司 Roof supporting device
CN205172591U (en) * 2015-11-18 2016-04-20 中国水利水电第四工程局有限公司 Tunnel concrete placement new plastic formworking jumbo

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11280397A (en) * 1998-03-30 1999-10-12 Super Resin Kogyo Kk Lock bolt structural body
CN202090926U (en) * 2011-05-10 2011-12-28 中国华冶科工集团有限公司 Support for down-hole rail roadway formwork
CN202266277U (en) * 2011-08-26 2012-06-06 鹤壁煤业二矿有限责任公司 Contractible strut for U-shaped shed support
CN102733820A (en) * 2012-07-05 2012-10-17 山东新阳能源有限公司 Gob-side entry retaining support wall and integrated construction method thereof
CN104153798A (en) * 2014-07-31 2014-11-19 山东华联矿业股份有限公司 Roof supporting device
CN205172591U (en) * 2015-11-18 2016-04-20 中国水利水电第四工程局有限公司 Tunnel concrete placement new plastic formworking jumbo

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