CN101265806A - Large-inclination thick coal seam gob-side entry driving side supporting device with small coal pillars - Google Patents
Large-inclination thick coal seam gob-side entry driving side supporting device with small coal pillars Download PDFInfo
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- CN101265806A CN101265806A CNA2008100475908A CN200810047590A CN101265806A CN 101265806 A CN101265806 A CN 101265806A CN A2008100475908 A CNA2008100475908 A CN A2008100475908A CN 200810047590 A CN200810047590 A CN 200810047590A CN 101265806 A CN101265806 A CN 101265806A
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Abstract
The invention discloses a large dip angle thick coal seam leaves little coal pillar to dig the roadway group part supporting device along the sky, it includes landing leg, triangular fixed bolster, landing leg stull and fixed anchor rod, the landing leg is "I" type, weld a triangular fixed bolster on the upper, lower end of the landing leg respectively, the fixed anchor rod of the upper end and lower end of the landing leg passes the anchor rod hole of the triangular fixed bolster, a section of anchor is in the top of the roadway, bottom plate stabilizes the rock stratum, another end hangs the brace, fix the upper, lower end of the landing leg on the coal wall of roadway group, support and combine with metal mesh, high-strength prestressed anchor rod, steel band, etc. to form a strong supporting whole. The method has the advantages of easily-obtained materials, simple construction and safe and reliable support, effectively improves the reliability and safety of the whole support, solves the technical problem of roadway support in a thick coal seam with a large inclination angle, has a good support effect on preventing the coal seam from being extracted and slipping, and has strong practical value.
Description
Technical field
The present invention relates to stay on the fender gob side entry driving in the high inclination-angle high seam of a kind of down-hole and help suspension device on the return airway, be specifically related to be in the support of going up when staying the fender gob side entry driving in the high inclination-angle high seam in the supporting of return airway fender one side coal group, it and wire lath, high-strength prestressed anchor pole, steel band constitute jointly a kind of supporting and protection structure.
Background technology
Stay fender on sky driving during return airway in the high inclination-angle high seam, group and base plate all are in the coal seam on the tunnel generally speaking.The mining influence when advanced by bank face and the long period of soaking effect of goaf goaf water, group's fender coal body is soft on the tunnel, globality is poor, obviously reduce owing to the immersional wetting shear strength between coal seam and its roof and floor, behind the roadway excavation, under fender selfweight stress and goaf old man's effect of water pressure, the fender coal body is taken out very easily downwards and is emitted landing, personnel and device security in stable, the tunnel in tunnel are constituted a threat to, bring serious hidden danger to safety in production.At present, the U shaped steel collapsible timbering that the employing that the road supporting of the thick coal road of high inclination-angle has is traditional or the shed ding support mode of i iron support, the employing anchor guipure supporting that has.When adopting shed ding support, canopy pin shakiness is difficult to stop the downslide of group's fender on the tunnel, and very easily produces large deformation under the roof pressure effect, is difficult to control stability of the roadway.Though anchor guipure combined supporting can improve integrality and the stress state of helping rib in tunnel two to a certain extent, strengthen the self-bearing capacity of coal body, but still be difficult to prevent that the integral body of group's fender is taken out on the tunnel emits landing, therefore, even more ideal novel support pattern must be sought and a supporting difficult problem of helping on the tunnel in the high inclination-angle high seam could be solved effectively.
Summary of the invention
The objective of the invention is to be to provide a kind of high inclination-angle high seam to stay portion of fender gob side entry driving group suspension device, this device and wire lath, prestressed anchor, the supporting use of steel band supporting and protection structure, the supporting of having helped on having realized in the high inclination-angle high seam the tunnel, the present invention further is fixed on wire lath, prestressed anchor, steel band supporting and protection structure on the wall of tunnel by support, formed solid support wall one, improve whole supporting effect greatly, guaranteed the safety of construction operation in the tunnel.
In order to achieve the above object, the present invention adopts following technical measures:
For the supporting of strengthening helping on the tunnel, at wire lath commonly used, prestressed anchor, on the basis of supporting and protection structure such as steel band, be close to and perpendicular to the surface arrangement supporting leg of steel band, supporting leg is made of the 14# mining i beam, for fixed supporting leg, on supporting leg, a triangle fixed support of making of steel plate is respectively welded at following two ends, the triangle fixed support is made up of horizontal support and bearing diagonal, on the surface of horizontal support and bearing diagonal, respectively have one and be convenient to the φ 40mm bolthole that fixing anchor bar passes, between two boltholes, add the sleeve pipe that welds a φ 40, to improve the enabling capabilities of horizontal support and bearing diagonal.
A kind of high inclination-angle high seam stays portion of fender gob side entry driving group suspension device, it comprises supporting leg, the triangle fixed support, supporting leg stull and last, the lower end fixing anchor bar, it is characterized in that: described supporting leg is " worker " font, on supporting leg, the lower end respectively is welded with a triangle fixed support, the fixing anchor bar of supporting leg top and bottom passes the support bracket fastened bolthole of triangle, one section anchors into the top, tunnel, in the base slab stability rock stratum, the other end hangs up supporting plate with on the supporting leg, the lower end is fixed on to be helped on the rib, with wire lath on the tunnel, high-strength prestressed anchor pole, strong supporting integral body of formation is united in the steel band supporting.
Described supporting leg adopts 1 4# mining i beam to make, and the one side on its edge of a wing is close to and perpendicular to steel band, the upper and lower end of supporting leg respectively is welded with a triangle fixed support.
It is that 30 ° and lower end angle are 60 ° triangle that described triangle fixed support is formed a upper end angle respectively by horizontal support and bearing diagonal, have the φ 40mm bolthole that upper and lower end fixedly passes on horizontal support and the bearing diagonal, be beneficial to the upper and lower end fixing anchor bar and pass.
The support bracket fastened supporting sleeve of described supporting leg, with the steel pipe manufacturing of φ 40mm, and with fixed support on the bolthole welding, in order to improve the enabling capabilities of horizontal support and bearing diagonal when installing and fixing anchor pole.
Described supporting leg upper and lower end fixing anchor bar adopts high-strength prestressed anchor pole, during anchoring, anchor pole passes horizontal support in the fixed support and the supporting sleeve between the bearing diagonal, become the angle of 60 ° and 30 ° to anchor into the coal seam roof and floor respectively with tunnel axis horizontal face and stablize in the rock stratum, play the effect of fixed supporting leg.
The present invention compared with prior art has the following advantages and effect:
On high inclination-angle high seam digging laneway, help in the supporting, adopt supporting leg, the combined supporting mode of anchor band net, can improve the stress distribution of helping on the tunnel, play the good whole supporting effect, with the frame supporting with anchor band net supporting compare, can promote the reliability and the safety of whole supporting effectively, ensured the safety of roadway construction operation more, having prevented effectively that fender from taking out emits landing, solved the roadway support technical barrier in the high inclination-angle high seam, and support material is drawn materials easily, making and construction are simple, supporting safety, reliably, save support cost greatly, have very strong practical value.
Description of drawings
Fig. 1 stays portion of fender gob side entry driving group suspension device structural representation for a kind of high inclination-angle high seam
Fig. 2 stays portion of fender gob side entry driving group suspension device upper end fixed support A-A sectional drawing for a kind of high inclination-angle high seam
Fig. 3 stays portion of fender gob side entry driving group suspension device upper end fixed support B-B sectional drawing for a kind of high inclination-angle high seam
Fig. 4 stays portion of fender gob side entry driving group suspension device lower end fixed support C-C sectional drawing for a kind of high inclination-angle high seam
Fig. 5 stays portion of fender gob side entry driving group suspension device lower end fixed support D-D sectional drawing for a kind of high inclination-angle high seam
Fig. 6 is a kind of high inclination-angle high seam pick lane portion of group supporting elevation
Wherein: 1-supporting leg, the horizontal support of 2A, 2B-, 3A, 3B-bearing diagonal, 4A, 4B-supporting sleeve, 5A-upper end fixing anchor bar, 5B-lower end fixing anchor bar, 6A, 6B-supporting plate, 7A, 7B-triangle fixed support, the 8-wire lath, the high-strength prestressed anchor pole of 9-, 10-M4 steel band, 11-prestressed anchor supporting plate, the stull of 12-supporting leg.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail:
A kind of high inclination-angle high seam stays portion of fender gob side entry driving group suspension device, it comprises supporting leg 1, triangle fixed support 7A, 7B, supporting leg stull 12 and last, lower end fixing anchor bar 5A, 5B, it is characterized in that: described supporting leg 1 is " worker " font, on supporting leg 1, the lower end respectively is welded with a triangle fixed support 7A, 7B, supporting leg 1 top and bottom fixing anchor bar 5A, 5B passes triangle fixed support 7A, the bolthole of 7B, one section anchors into the top, tunnel, in the base slab stability rock stratum, the other end hangs up supporting plate 6A, 6B is with on the supporting leg 1, the lower end is fixed on to be helped on the rib, with wire lath 8 on the tunnel, high-strength prestressed anchor pole 9, supporting and protection structure such as M4 steel band 10 are united strong supporting integral body of formation.
Described supporting leg 1 adopts the 14# mining i beam to make, and the one side on its edge of a wing is close to and perpendicular to M4 steel band 10, the upper and lower end of supporting leg 1 respectively is welded with triangle fixed support 7A, a 7B.
Described triangle fixed support 7A, 7B support 2A, 2B and bearing diagonal 3A, 3B to form a upper end angle respectively are that 30 ° and lower end angle are 60 ° triangle by horizontal.Have the bolthole that upper and lower end fixing anchor bar 5A, 5B pass on horizontal support 2A, 2B and bearing diagonal 3A, the 3B, bolthole is φ 40mm, so that upper and lower end fixing anchor bar 5A, 5B pass.Between horizontal support 2A, the 2B and bearing diagonal 3A, 3B of supporting leg 1 fixed triangle shape support 7A, 7B, weld and do support and connection with the bolthole on supporting sleeve 4A, 4B and the fixed support, in order to improve the horizontal enabling capabilities that supports 2A, 2B and bearing diagonal 3A, 3B when installing and fixing anchor pole 5A, 5B.
Described upper and lower end fixing anchor bar 5A, 5B adopt high-strength prestressed anchor pole, pass the horizontal supporting sleeve 4A that supports between 2A, 2B and bearing diagonal 3A, the 3B among fixed triangle shape support 7A, the 7B, 4B, become the angle of 60 ° and 30 ° to anchor in top, tunnel, the base slab stability rock stratum respectively with tunnel axis horizontal face, play the effect of fixed supporting leg 1.
Behind the coal mine roadway excavation, flatten wall immediately, according to conventional support pattern, elder generation's close plating net 8, high-strength prestressed anchor pole 9 is installed, move towards to install M4 steel band 10 again along the tunnel, be close to the supporting plate 11 that M4 steel band 10 hangs up high-strength prestressed anchor pole 9, supporting leg 1 is installed on surface at vertical M4 steel band 10, on supporting leg 1, lower end triangle fixed support 7A, the bolthole of 7B pushes up to the tunnel respectively, each makes a call to an anchor hole in the base slab stability rock stratum, on, lower end fixing anchor bar 5A, one section of 5B is passed triangle fixed support 7A, the bolthole of 7B is fixed on the top, tunnel, in the base slab stability rock stratum, the other end hangs up supporting plate 6A, behind the 6B supporting leg 1 is fixed on the rib of tunnel portion of group tightly, the elevation angle of upper end fixing anchor bar 5A is 60 °, the angle of depression of lower end fixing anchor bar 5B is 30 °, link with supporting leg stull 12 between supporting leg 1 and the supporting leg 1, to guarantee the lateral stability of supporting leg 1.
Claims (5)
1, a kind of high inclination-angle high seam stays portion of fender gob side entry driving group suspension device to put, it comprises supporting leg (1), triangle fixed support (7A, 7B), supporting leg stull (12) and last, lower end fixing anchor bar (5A, 5B), it is characterized in that: described supporting leg (1) is I shape, on supporting leg (1), the lower end respectively is welded with a triangle fixed support (7A, 7B), fixing anchor bar (the 5A of supporting leg (1) top and bottom, 5B) pass triangle fixed support (7A, bolthole 7B), one section anchors into the top, tunnel, in the base slab stability rock stratum, the other end hangs up supporting plate (6A, 6B) with on the supporting leg (1), the lower end is fixed on to be helped on the rib, with wire lath (8) on the tunnel, high-strength prestressed anchor pole (9), M4 steel band (10) combined supporting forms a supporting integral body.
2, a kind of high inclination-angle high seam according to claim 1 stays portion of fender gob side entry driving group suspension device, it is characterized in that: described supporting leg (1) adopts the 14# mining i beam to make, and the one side on its edge of a wing is close to and perpendicular to M4 steel band (10).
3, a kind of high inclination-angle high seam according to claim 1 stays portion of fender gob side entry driving group suspension device, it is characterized in that: it is that 30 ° and lower end angle are 60 ° triangle that triangle fixed support (7A, 7B) is formed a upper end angle respectively by horizontal support (2A, 2B) and bearing diagonal (3A, 3B), has the bolthole that upper and lower end fixing anchor bar (5A, 5B) passes on horizontal support (2A, 2B) and the bearing diagonal (3A, 3B).
4, a kind of high inclination-angle high seam according to claim 1 stays portion of fender gob side entry driving group suspension device, it is characterized in that: go up at supporting leg (1) between the horizontal support (2A, 2B) and bearing diagonal (3A, 3B) of fixed triangle shape support (7A, 7B), with the welding of the bolthole on supporting sleeve (4A, 4B) and the fixed triangle shape support (7A, 7B).
5, a kind of high inclination-angle high seam according to claim 1 stays portion of fender gob side entry driving group suspension device, it is characterized in that: upper and lower end fixing anchor bar (5A, 5B) adopts high-strength prestressed anchor pole (9), high-strength prestressed anchor pole (9) passes horizontal support (2A, 2B) in the triangle fixed support (7A, 7B) and the supporting sleeve (4A between the bearing diagonal (3A, 3B), 4B), become the angle of 60 ° and 30 ° to anchor in top, tunnel, the floor strata respectively with tunnel axis horizontal face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100475908A CN101265806A (en) | 2008-05-06 | 2008-05-06 | Large-inclination thick coal seam gob-side entry driving side supporting device with small coal pillars |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100475908A CN101265806A (en) | 2008-05-06 | 2008-05-06 | Large-inclination thick coal seam gob-side entry driving side supporting device with small coal pillars |
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| CN101265806A true CN101265806A (en) | 2008-09-17 |
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| CNA2008100475908A Pending CN101265806A (en) | 2008-05-06 | 2008-05-06 | Large-inclination thick coal seam gob-side entry driving side supporting device with small coal pillars |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094660A (en) * | 2010-12-24 | 2011-06-15 | 西安科技大学 | Integral high-strength flexible support method of roadway at large-inclined angle coal-seam longwall mining section |
| CN102296976A (en) * | 2011-09-02 | 2011-12-28 | 安徽理工大学 | Asymmetrical bolt-net-cable combined supporting method for special-shaped recovery tunnel of large inclination angle coal bed |
| CN103485809A (en) * | 2012-06-10 | 2014-01-01 | 解波 | Shoulder protection type steel belt |
| CN103953376A (en) * | 2014-05-13 | 2014-07-30 | 中国矿业大学 | Method for large dip angle work surface rapid mesh laying and top plate stabilizing |
| CN106884671A (en) * | 2017-03-06 | 2017-06-23 | 刘冲 | The method for protecting support of underground coal mine working face air intake crossheading |
| CN109026094A (en) * | 2018-07-20 | 2018-12-18 | 河北充填采矿技术有限公司 | A kind of auxiliary shoring device and method for protecting support that back inclination angle is adaptive |
| CN110318372A (en) * | 2019-07-02 | 2019-10-11 | 上海外高桥造船有限公司 | Anchor tie interconnection method |
| CN110700883A (en) * | 2019-09-23 | 2020-01-17 | 兖矿新疆矿业有限公司 | Gob-side entry driving prevention and control method for large-dip-angle coal seam composite disaster small coal pillar |
-
2008
- 2008-05-06 CN CNA2008100475908A patent/CN101265806A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094660A (en) * | 2010-12-24 | 2011-06-15 | 西安科技大学 | Integral high-strength flexible support method of roadway at large-inclined angle coal-seam longwall mining section |
| CN102094660B (en) * | 2010-12-24 | 2013-06-05 | 西安科技大学 | Integral high-strength flexible support method of roadway at large-inclined angle coal-seam longwall mining section |
| CN102296976A (en) * | 2011-09-02 | 2011-12-28 | 安徽理工大学 | Asymmetrical bolt-net-cable combined supporting method for special-shaped recovery tunnel of large inclination angle coal bed |
| CN102296976B (en) * | 2011-09-02 | 2013-10-30 | 安徽理工大学 | Asymmetrical bolt-net-cable combined supporting method for special-shaped recovery tunnel of large inclination angle coal bed |
| CN103485809A (en) * | 2012-06-10 | 2014-01-01 | 解波 | Shoulder protection type steel belt |
| CN103953376A (en) * | 2014-05-13 | 2014-07-30 | 中国矿业大学 | Method for large dip angle work surface rapid mesh laying and top plate stabilizing |
| CN106884671A (en) * | 2017-03-06 | 2017-06-23 | 刘冲 | The method for protecting support of underground coal mine working face air intake crossheading |
| CN109026094A (en) * | 2018-07-20 | 2018-12-18 | 河北充填采矿技术有限公司 | A kind of auxiliary shoring device and method for protecting support that back inclination angle is adaptive |
| CN110318372A (en) * | 2019-07-02 | 2019-10-11 | 上海外高桥造船有限公司 | Anchor tie interconnection method |
| CN110318372B (en) * | 2019-07-02 | 2021-03-12 | 上海外高桥造船有限公司 | Anchor rod butt joint method |
| CN110700883A (en) * | 2019-09-23 | 2020-01-17 | 兖矿新疆矿业有限公司 | Gob-side entry driving prevention and control method for large-dip-angle coal seam composite disaster small coal pillar |
| CN110700883B (en) * | 2019-09-23 | 2022-03-11 | 兖矿新疆矿业有限公司 | Gob-side entry driving prevention and control method for large-dip-angle coal seam composite disaster small coal pillar |
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Open date: 20080917 |