CN203531935U - Mine multi-steel-strand combined support device - Google Patents
Mine multi-steel-strand combined support device Download PDFInfo
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- CN203531935U CN203531935U CN201320610374.6U CN201320610374U CN203531935U CN 203531935 U CN203531935 U CN 203531935U CN 201320610374 U CN201320610374 U CN 201320610374U CN 203531935 U CN203531935 U CN 203531935U
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- steel strand
- grouting pipe
- steel
- support device
- steel strands
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Abstract
The utility model relates to a mine multi-steel-strand combined support device. A guide cap is arranged at the front ends of steel strands, a grouting pipe is arranged in the center of the steel strands, a slurry blocking round bar is arranged between the front end of the grouting pipe and the top end of the guide cap, slurry outlet holes are formed in the wall of the grouting pipe, hoop rings are arranged on the periphery of the steel strands from top to bottom, the periphery of the steel strands located in the free section of the support device is sleeved with a steel strand casing pipe in a meshed mode, the periphery of the steel strands located in the sealed section of the support device is sleeved with a lug piece type seal rubber sleeve and a circular-truncated-cone hole sealing rubber sleeve in a sleeved mode, the tail ends of the steel strands are fastened on a support plate through a multi-hole lock, and clamping pieces are arranged between the steel strands and the multi-hole lock. According to the support device and a method, not only can tensile strength and shearing strength of support components be improved to a great degree, but also bearing capacity of stable surrounding rock in a deep part can be improved better. The support device is simple in structure and convenient to install and brings great convenience for reinforcing work for the rock stratum of a mine big broken rock zone.
Description
Technical field
the utility model relates to a kind of suspension device, especially by many steel strand combination supportings, controls a kind of mining many steel strand combination supporting device of deformation of the surrounding rock in tunnel.
Background technology
current domestic mine mainly adopts by common mining single steel strand anchor cable or hollow grouting cable anchor tunnel deep wall rock is reinforced.Common mining single anchor cable how by end resin anchoring to country rock with higher pretightning force, transfer the supporting capacity of deep wall rock.Hollow grouting cable anchor generally first carries out end resin anchoring, and stretch-draw is carried out grouting and reinforcing again and realizes full length fastening later, has high pre-stress and full length fastening characteristic concurrently.
but the deepening with mining level, deep tunnel is at residual stress, adopt under the conditions such as disturbance by force, large deformation characteristic when surrouding rock deformation shows obvious soft rock length, relaxation zone obviously increases (the local 5m of surpassing), and now common mining single anchor cable and hollow grouting cable anchor will show deficiency:
1. the length of common mining single anchor cable and hollow grouting cable anchor is generally at 6-7m, and under large relaxation zone condition, the anchor cable of finite length can not anchor into deep and stablize in rock stratum to give full play to its supporting capacity;
2. tension, the shear strength of considering single steel strand are lower, and under the compound influence of the stress of primary rock, tectonic stress, mining induced stress, common single Mine anchorage cable and hollow grouting cable anchor easily carried limit and caused and break, cut off;
3. though hollow grouting cable anchor can carry out grouting and reinforcing to the country rock in certain limit, slip casting forms full length fastening later, and the whole limit elongation of anchor cable reduces, and can not adapt to the continuous deformation characteristic of deep weak surrounding rock;
4. the resistance to shock loads ability of common mining single anchor cable and hollow grouting cable anchor, incompatible with the Burst Tendency of deep mining.
Utility model content
the problem that can not reinforce large relaxation zone rock stratum in order to solve existing mining single steel strand anchor cable or hollow grouting cable anchor, the utility model provides a kind of mining many steel strand combination supporting device, this suspension device and method can improve the tension of support unit largely, shear strength, also can better transfer the supporting capacity of deep stabilizing surrounding rock, the continuous deformation characteristic that can adapt to Burst Tendency and the deep wall rock of deep mining when country rock is carried out to grouting and reinforcing, and this suspension device is simple in structure, easy for installation, there is stronger shock loading ability, by many steel strand are carried out to synchronous tension, make many steel strand uniform stresseds, be conducive to the stability of supporting and protection structure, bring great convenience to the reinforcement of the large relaxation zone of mine rock stratum.
the utility model solves the technical scheme that its technical problem adopts: a kind of mining many steel strand combination supporting device, this suspension device is divided into anchoring section from top to bottom, free segment, seal section and revealed section, this suspension device comprises guiding cap, steel strand, stifled slurry round steel, Grouting Pipe, slurry outlet, garter spring, steel strand sleeve pipe, auricle formula seal rubber sleeve, round platform sealing of hole gum cover, supporting plate, fixing hole, intermediate plate and porous lockset, the front end of described steel strand is provided with the guiding cap of taper, the center of steel strand is provided with Grouting Pipe, the front end of Grouting Pipe is to the stifled slurry round steel that is provided with diameter and Grouting Pipe internal diameter between the top of guiding cap and matches, on the tube wall of Grouting Pipe, be distributed with slurry outlet, described slurry outlet is distributed in noncontact place of steel strand and Grouting Pipe, the distribution of slurry outlet by free segment to anchoring section density gradually, the periphery of steel strand is provided with 2-4 garter spring from top to bottom, garter spring tightly binds round many steel strand in Grouting Pipe around, peripheral the coincideing of steel strand that is positioned at suspension device free segment is set with steel strand sleeve pipe, peripheral the coincideing of steel strand that is positioned at suspension device seal section is set with auricle formula seal rubber sleeve and round platform sealing of hole gum cover, the tail end of steel strand is fastened on supporting plate by porous lockset, on supporting plate, have circular fixing hole, during constructability, by the fixing supporting plate of setscrew, between steel strand and porous lockset, be provided with intermediate plate.
during supporting, first according to size and the orientation construction drill of design, after drilling construction completes, guiding cap is stretched in boring, at the bottom of relying on manpower progressively many steel strand combination supporting device to be pushed into hole, and auricle formula seal rubber sleeve and round platform sealing of hole gum cover are clamp-oned in hole, make the large end face of round platform sealing of hole gum cover concordant with country rock surface, rapidly supporting plate is close to country rock through the exposed junction of steel strand, at the country rock place construction drill corresponding with fixing hole so that fixedly supporting plate of setscrew to be installed, during this period, should utilize temporary lining equipment to withstand supporting plate, in case device landing, grouting pipeline and Grouting Pipe are connected and started slip casting, after slip casting completes one week, by anchor cable tensioning machine tool, many steel strand are carried out to synchronous tension, by clip type porous lockset, lock many steel strand simultaneously.
the beneficial effects of the utility model are, this suspension device and method can improve tension, the shear strength of support unit largely, also can better transfer the supporting capacity of deep stabilizing surrounding rock, the continuous deformation characteristic that can adapt to Burst Tendency and the deep wall rock of deep mining when country rock is carried out to grouting and reinforcing, and this suspension device is simple in structure, easy for installation, there is stronger shock loading ability; By many steel strand are carried out to synchronous tension, make many steel strand uniform stresseds, be conducive to the stability of supporting and protection structure, bring great convenience to the reinforcement of the large relaxation zone of mine rock stratum.
Accompanying drawing explanation
below in conjunction with accompanying drawing and example, the utility model is described in further detail.
fig. 1 is structural principle schematic diagram of the present utility model.
in Fig. 1,1. guiding cap, 2. steel strand, 3. stifled slurry round steel, 4. Grouting Pipe, 5. slurry outlet, 6. garter spring, 7. steel strand sleeve pipe, 8. hole wall, 9. auricle formula seal rubber sleeve, 10. round platform sealing of hole gum cover, 11. supporting plates, 12. fixing holes, 13. intermediate plates, 14. porous locksets.
The specific embodiment
in Fig. 1, a kind of mining many steel strand combination supporting device, this suspension device is divided into anchoring section from top to bottom, free segment, seal section and revealed section, this suspension device comprises guiding cap 1, steel strand 2, stifled slurry round steel 3, Grouting Pipe 4, slurry outlet 5, garter spring 6, steel strand sleeve pipe 7, auricle formula seal rubber sleeve 9, round platform sealing of hole gum cover 10, supporting plate 11, fixing hole 12, intermediate plate 13 and porous lockset 14, the front end of described steel strand 2 is provided with the guiding cap 1 of taper, the center of steel strand 2 is provided with Grouting Pipe 4, the front end of Grouting Pipe 4 is to the stifled slurry round steel 3 that is provided with diameter and Grouting Pipe 4 internal diameters between the top of guiding cap 1 and matches, on the tube wall of Grouting Pipe 4, be distributed with slurry outlet 5, described slurry outlet 5 is distributed in noncontact place of steel strand 2 and Grouting Pipe 4, the distribution of slurry outlet 5 by free segment to anchoring section density gradually, the periphery of steel strand 2 is provided with 2-4 garter spring 6 from top to bottom, garter spring 6 tightly binds round many steel strand 2 in Grouting Pipe 4 around, peripheral the coincideing of steel strand 2 that is positioned at suspension device free segment is set with steel strand sleeve pipe 7, peripheral the coincideing of steel strand 2 that is positioned at suspension device seal section is set with auricle formula seal rubber sleeve 9 and round platform sealing of hole gum cover 10, the tail end of steel strand 2 is fastened on supporting plate 11 by porous lockset 14, on supporting plate 11, have circular fixing hole 12, during constructability, by the fixing supporting plate 11 of setscrew, between steel strand 2 and porous lockset 14, be provided with intermediate plate 13.
during supporting, first according to size and the orientation construction drill of design, after drilling construction completes, guiding cap 1 is stretched in boring, at the bottom of relying on manpower progressively many steel strand combination supporting device to be pushed into hole, and auricle formula seal rubber sleeve 9 and round platform sealing of hole gum cover 10 are clamp-oned in hole, make the large end face of round platform sealing of hole gum cover 10 concordant with country rock surface, rapidly supporting plate 11 is close to country rock through the exposed junction of steel strand 2, at the country rock place construction drill corresponding with fixing hole 12 so that fixedly supporting plate 11 of setscrew to be installed, during this period, should utilize temporary lining equipment to withstand supporting plate 11, in case device landing, grouting pipeline and Grouting Pipe 4 are connected and started slip casting, after slip casting completes one week, by anchor cable tensioning machine tool, many steel strand 2 are carried out to synchronous tension, by clip type porous lockset 14, lock many steel strand 2 simultaneously.
Claims (3)
1.
a kind of mining many steel strand combination supporting device, this suspension device is divided into anchoring section from top to bottom, free segment, seal section and revealed section, this suspension device comprises guiding cap (1), steel strand (2), stifled slurry round steel (3), Grouting Pipe (4), slurry outlet (5), garter spring (6), steel strand sleeve pipe (7), auricle formula seal rubber sleeve (9), round platform sealing of hole gum cover (10), supporting plate (11), fixing hole (12), intermediate plate (13) and porous lockset (14), it is characterized in that, the front end of described steel strand (2) is provided with the guiding cap (1) of taper, the center of steel strand (2) is provided with Grouting Pipe (4), the front end of Grouting Pipe (4) is to being provided with stifled slurry round steel (3) between the top of guiding cap (1), on the tube wall of Grouting Pipe (4), be distributed with slurry outlet (5), the periphery of steel strand (2) is provided with 2-4 garter spring (6) from top to bottom, garter spring (6) tightly binds round many steel strand (2) in Grouting Pipe (4) around, peripheral the coincideing of steel strand (2) that is positioned at suspension device free segment is set with steel strand sleeve pipe (7), peripheral the coincideing of steel strand (2) that is positioned at suspension device seal section is set with auricle formula seal rubber sleeve (9) and round platform sealing of hole gum cover (10), the tail end of steel strand (2) is fastened on supporting plate (11) by porous lockset (14), on supporting plate (11), have circular fixing hole (12), between steel strand (2) and porous lockset (14), be provided with intermediate plate (13).
2.
a kind of mining many steel strand combination supporting device according to claim 1, is characterized in that, described stifled slurry round steel (3) diameter and Grouting Pipe (4) internal diameter match.
3.
a kind of mining many steel strand combination supporting device according to claim 1, is characterized in that, described slurry outlet (5) is distributed in noncontact place of steel strand (2) and Grouting Pipe (4), the distribution of slurry outlet (5) by free segment to anchoring section density gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320610374.6U CN203531935U (en) | 2013-09-30 | 2013-09-30 | Mine multi-steel-strand combined support device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320610374.6U CN203531935U (en) | 2013-09-30 | 2013-09-30 | Mine multi-steel-strand combined support device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203531935U true CN203531935U (en) | 2014-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320610374.6U Expired - Fee Related CN203531935U (en) | 2013-09-30 | 2013-09-30 | Mine multi-steel-strand combined support device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203531935U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296390A (en) * | 2018-09-11 | 2019-02-01 | 福建工程学院 | The cable bolting method in breaking surrounding rock tunnel |
| CN113322950A (en) * | 2021-04-29 | 2021-08-31 | 上海长凯岩土工程有限公司 | Inclined strut steel pipe middle locking type remote constraint bin grouting device and construction method thereof |
-
2013
- 2013-09-30 CN CN201320610374.6U patent/CN203531935U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296390A (en) * | 2018-09-11 | 2019-02-01 | 福建工程学院 | The cable bolting method in breaking surrounding rock tunnel |
| CN109296390B (en) * | 2018-09-11 | 2020-11-10 | 福建工程学院 | Anchor cable supporting method for broken surrounding rock roadway |
| CN113322950A (en) * | 2021-04-29 | 2021-08-31 | 上海长凯岩土工程有限公司 | Inclined strut steel pipe middle locking type remote constraint bin grouting device and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20140409 Termination date: 20150930 |
|
| EXPY | Termination of patent right or utility model |