CN204371386U - The inside and outside two note formula prestressed anchor Cable Structure of a kind of roadway floor - Google Patents
The inside and outside two note formula prestressed anchor Cable Structure of a kind of roadway floor Download PDFInfo
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- CN204371386U CN204371386U CN201420839609.3U CN201420839609U CN204371386U CN 204371386 U CN204371386 U CN 204371386U CN 201420839609 U CN201420839609 U CN 201420839609U CN 204371386 U CN204371386 U CN 204371386U
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Abstract
The inside and outside two note formula prestressed anchor Cable Structure of a kind of roadway floor, this structure is through grouting and reinforcing district, grouting layer, terrace layer and macadam, bore pick and have boring, anchor cable is fitted with in boring, lockset and outer tube are housed outside anchor cable, outer tube is built with interior Grouting Pipe and outer Grouting Pipe, its lower end is inner by Ma Lisan fixed closed outside, inner fixing by cotton yarn filling at outer sleeve upper, outer sleeve upper is concordant with terrace layer, anchor cable upper end, lockset, terrace layer is all exposed in outer Grouting Pipe and interior Grouting Pipe upper end, being set with by three hole flat pallets is laid in terrace aspect, be fixed on that outer tube is outside and anchor cable is outside, fixed by rapid setting cement and cement grout filling and blocking respectively, grouting layer and terrace layer are fitted with Shallow hole grouting pipe downwards.This structure not only can carry out end distension improvement, realizes anchor cable and have high pre-stress in longer scope; And improve floor rocks opposing because of by horizontal pressure force and dynamic pressure affect the ability of deformation failure with prevent anchor cable from corroding.
Description
Technical field
the utility model relates to the anchor cable structure of the supporting of Soft Rock Drifts At Coal base plate and reinforcing, is especially applied to the inside and outside two note formula prestressed anchor Cable Structure of a kind of roadway floor of highland, deep pressure, Fu Shui.
Background technology
the China's coal-mine pit mining degree of depth is with the speed increase of annual 8 ~ 12m, under highland, deep pressure, high dynamic pressure mining conditions, Soft Rock Roadway Floor Heave is violent, particularly under the rich water condition of floor rocks, karst water, crevice water exacerbate the argillization disintegration of argillaceous rock further, distension amount is up to 1.5 ~ 2m at the end, circulation planted agent increases roadway maintenance cost, has a strong impact on tunnel and normally uses, and safety problem is abnormal outstanding.
the method of administering for floor lift in gallery is at present broadly divided into destressing method, Enhanced support method and combined supporting method, and adopts anchor cable to carry out the method easy construction of base plate anchor pouring reinforcement and regulation effect is remarkable, uses the most extensive.Want to realize anchor cable high pre-stress, must first carry out after anchor cable end anchorage could Shi Hanzhang, use common anchor cable that following three kinds of methods can be adopted to realize anchor cable high pre-stress: 1) base plate drilling construction complete after employing cement grout boring certain depth within the scope of grouting carry out anchoring, after-applied prestressing force; 2) base plate drilling construction complete after employing resin anchoring agent carry out anchoring in the certain limit of anchor cable deep, after-applied prestressing force; 3), after base plate drilling construction completes, rubber stopper is adopted to carry out grouting under pressure anchoring after the sealing of hole of deep, after-applied prestressing force.
under the rich water condition of base plate, there is in boring a large amount of underground water, construction water, and again can rapid aggregation after extracting out, there are following three outstanding problems in obvious said method: first, conventional grout anchoring, Anchor Agent anchoring cannot effectively be implemented by water mitigation, anchoring effect extreme difference; The second, rubber stopper cannot contact with drill hole wall is closely knit, and spillage phenomenon is serious, and grouting pressure is low, and anchoring effect is poor; 3rd, if direct grouting under pressure after superficial part sealing of hole, post-tensioning anchor cable, can ensure slip casting effect and realize full length fastening, but cannot realize anchor cable have high prestressing force in longer scope.Therefore can find out, use common anchor cable and current anchoring, hole sealing technology cannot realize baseboard anchor cable, in longer scope, there is high pre-stress.
Summary of the invention
use common anchor cable and current anchoring, hole sealing technology cannot realize the deficiency that baseboard anchor cable has high pre-stress in longer scope to overcome in prior art, the utility model provides the inside and outside two note formula prestressed anchor Cable Structure of a kind of roadway floor, the inside and outside two note formula prestressed anchor Cable Structure of this roadway floor is used for realizing baseboard anchor cable and has high pre-stress in longer scope, and then improve stress state and the mechanical property of roadway floor country rock, improve the self-bearing capacity of roadway floor rock, ensure that the complete of floor rocks is with stable.
the utility model solves the technical scheme that its technical problem adopts: this kind of inside and outside two note formula prestressed anchor Cable Structure of roadway floor comprises macadam, terrace floor, anchor cable, anchor cable upper end, lockset, three hole flat pallets, Shallow hole grouting pipe, cotton yarn, interior Grouting Pipe, outer tube, Ma Lisan, outer Grouting Pipe, cement grout, anchor cable lower end, boring, rapid setting cement, grouting floor and grouting and reinforcing district; The inside and outside two note formula prestressed anchor Cable Structure of this roadway floor, through the macadam on the grouting layer in the middle part of deep slip casting 18 stabilization zone, terrace layer and top, is bored the boring of digging and having 6-21m dark, is directly arrived grouting and reinforcing district; The anchor cable of the oval column of 6-20m is fitted with in boring, the peripheral order of anchor cable is set with lockset and outer tube, outer tube is built with interior Grouting Pipe and outer Grouting Pipe, its lower end is inner by Ma Lisan fixed closed outside, inner fixing by cotton yarn filling at outer sleeve upper, outer sleeve upper is also concordant with terrace layer, and terrace layer is all exposed in anchor cable upper end, lockset, outer Grouting Pipe and interior Grouting Pipe upper end, and be set with by three hole flat pallets and be laid in terrace aspect, be fixed on that outer tube is outside and anchor cable is outside; Outer tube outside is from top to bottom fixed by rapid setting cement and cement grout filling and blocking respectively, and grouting layer and terrace layer are evenly fitted with Shallow hole grouting pipe downwards, and fills reinforcing to the slip casting of grouting layer.
described outer tube is outer through being 65 ~ 75mm, 10 ~ 25mm less of boring aperture, and through being 60 ~ 70mm in outer tube, overcoat pipe range is 3 ~ 10m.
described anchor cable external diameter is 20 ~ 30mm, and length is 6 ~ 20m, and the length that outer tube is stretched out in outer tube and anchor cable upper end is 50 ~ 200mm.
the beneficial effects of the utility model are: inside and outside this kind of roadway floor, two note formula prestressed anchor Cable Structure provide not only highland, a kind of deep pressure, rich water-bed slat element goes to the bottom distension improvement anchor cable structure, use this anchor cable structure to carry out end distension improvement, in longer scope, there is high pre-stress by anchor cable can be realized after note two inside and outside sleeve pipe; And carry out by the outer Grouting Pipe of this structure angle of internal friction and the cohesion that deep high-pressure slip-casting can improve floor rock, rock in roadway floor certain limit can be converted into from biaxial stress state, low confined pressure triaxial stress state the triaxial stress state had compared with high confining pressure by anchor cable high pre-stress, greatly improves floor rocks opposing because of the ability of deformation failure by horizontal pressure force and dynamic pressure affect; And can, by the secretion between anchor cable and sleeve pipe, prevent anchor cable be subject to water mitigation and corrode by Grouting Pipe slip casting in this structure.
Accompanying drawing explanation
below in conjunction with accompanying drawing, the utility model is further illustrated.
fig. 1 is structural representation of the present utility model.
fig. 2 is the sectional drawing of anchor cable structure.
1. macadams in figure, 2. terrace layer, 3. anchor cable, 4. anchor cable upper end, 5. lockset, 6. three hole flat pallets, 7. Shallow hole grouting pipe, 8. cotton yarn, Grouting Pipe 9., 10. outer tube, 11. Ma Lisan, 12. outer Grouting Pipe, 13. cement grouts, 14. anchor cable lower ends, 15. borings, 16. rapid setting cements, 17. grouting layers, 18. grouting and reinforcing districts.
Detailed description of the invention
in the drawings, the inside and outside two note formula prestressed anchor Cable Structure of a kind of roadway floor, comprising: macadam 1, terrace floor 2, anchor cable 3, anchor cable upper end 4, lockset 5, three hole flat pallet 6, Shallow hole grouting pipe 7, cotton yarn 8, interior Grouting Pipe 9, outer tube 10, Ma Lisan 11, outer Grouting Pipe 12, cement grout 13, anchor cable lower end 14, boring 15, rapid setting cement 16, grouting floor 17 and grouting and reinforcing district 18; The inside and outside two note formula prestressed anchor Cable Structure of this roadway floor, through the macadam 1 on the grouting floor 17 at grouting and reinforcing district, deep 18, middle part, terrace floor 2 and top, is bored the boring 15 of digging and having 6-21m dark, is directly arrived grouting and reinforcing district 18; The anchor cable 3 of the oval column of 6-20m is fitted with in boring 15, the peripheral order of anchor cable 3 is set with lockset 5 and outer tube 10, outer tube 10 is built with interior Grouting Pipe 9 and outer Grouting Pipe 12, inner by Ma Lisan 11 fixed closed in outer tube 10 lower end, clog fixing in inside, outer tube 10 upper end by cotton yarn 8, outer tube 10 upper end is also concordant with terrace layer 2, terrace layer 2 is all exposed in anchor cable upper end 4, lockset 5, outer Grouting Pipe 12 and interior Grouting Pipe 9 upper end, and be laid on 2, terrace layer by three hole flat pallets 6 suits, be fixed on outer tube 10 outside and anchor cable 3 outside; Outer tube 10 outside is from top to bottom fixed by rapid setting cement 16 and cement grout 13 filling and blocking respectively, and grouting layer 17 and terrace layer 2 are evenly fitted with Shallow hole grouting pipe 7 downwards, and fills reinforcing to grouting layer 17 slip casting.
described outer tube 10 is outer through being 65 ~ 75mm, 10 ~ 25mm less of boring 15 aperture, and through being 60 ~ 70mm in outer tube 10, outer tube 10 length is 3 ~ 10m.
described anchor cable 3 external diameter is 20 ~ 30mm, and length is 6 ~ 20m, and the length that outer tube 10 is stretched out in outer tube 10 and anchor cable upper end 4 is 50 ~ 200mm.
Claims (3)
1.
the inside and outside two note formula prestressed anchor Cable Structure of a kind of roadway floor, comprises macadam (1), terrace floor (2), anchor cable (3), anchor cable upper end (4), lockset (5), three hole flat pallets (6), Shallow hole grouting pipe (7), cotton yarn (8), interior Grouting Pipe (9), outer tube (10), Ma Lisan (11), outer Grouting Pipe (12), cement grout (13), anchor cable lower end (14), boring (15), rapid setting cement (16), grouting floor (17) and grouting and reinforcing district (18), it is characterized in that: through the macadam (1) on the grouting floor (17) at grouting and reinforcing district, deep (18), middle part, terrace floor (2) and top, bore the boring (15) of digging and having 6 ~ 21m dark, directly arrive grouting and reinforcing district (18), the anchor cable (3) of the oval column of 6 ~ 20m is fitted with in boring (15), the peripheral order of anchor cable (3) is set with lockset (5) and outer tube (10), outer tube (10) is built with interior Grouting Pipe (9) and outer Grouting Pipe (12), inner by Ma Lisan (11) fixed closed in outer tube (10) lower end, in outer tube (10) upper end, inner filling by cotton yarn (8) is fixed, outer tube (10) upper end is also concordant with terrace layer (2), anchor cable upper end (4), lockset (5), terrace layer (2) is all exposed in outer Grouting Pipe (12) and interior Grouting Pipe (9) upper end, and be laid on terrace layer (2) face by three hole flat pallets (6) suits, be fixed on outer tube (10) outside and anchor cable (3) outside, outer tube (10) outside is from top to bottom fixed by rapid setting cement (16) and cement grout (13) filling and blocking respectively, is above evenly fitted with Shallow hole grouting pipe (7) downwards at grouting layer (17) and terrace layer (2).
2.
the inside and outside two note formula prestressed anchor Cable Structure of roadway floor according to claim 1, it is characterized in that: outer tube (10) is outward through being 65 ~ 75mm, 10 ~ 25mm less of boring (15) aperture, through being 60 ~ 70mm in outer tube (10), outer tube (10) length is 3 ~ 10m.
3.
the inside and outside two note formula prestressed anchor Cable Structure of roadway floor according to claim 1, it is characterized in that: anchor cable (3) external diameter is 20 ~ 30mm, length is 6 ~ 20m, and the length that outer tube (10) is stretched out in outer tube (10) and anchor cable upper end (4) is 50 ~ 200mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420839609.3U CN204371386U (en) | 2014-12-26 | 2014-12-26 | The inside and outside two note formula prestressed anchor Cable Structure of a kind of roadway floor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420839609.3U CN204371386U (en) | 2014-12-26 | 2014-12-26 | The inside and outside two note formula prestressed anchor Cable Structure of a kind of roadway floor |
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| Publication Number | Publication Date |
|---|---|
| CN204371386U true CN204371386U (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420839609.3U Active CN204371386U (en) | 2014-12-26 | 2014-12-26 | The inside and outside two note formula prestressed anchor Cable Structure of a kind of roadway floor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374653A (en) * | 2019-08-21 | 2019-10-25 | 中国矿业大学 | A kind of hollow grouting cable anchor hole sealing device of rock crusher band and its method for sealing |
| CN110593927A (en) * | 2019-09-30 | 2019-12-20 | 宁夏久威矿山安全工程有限责任公司 | Grouting structure with adjustable depth and grouting method |
| CN113216172A (en) * | 2021-05-25 | 2021-08-06 | 宜宾学院 | Basalt fiber anchor rod for slope support |
-
2014
- 2014-12-26 CN CN201420839609.3U patent/CN204371386U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374653A (en) * | 2019-08-21 | 2019-10-25 | 中国矿业大学 | A kind of hollow grouting cable anchor hole sealing device of rock crusher band and its method for sealing |
| CN110593927A (en) * | 2019-09-30 | 2019-12-20 | 宁夏久威矿山安全工程有限责任公司 | Grouting structure with adjustable depth and grouting method |
| CN113216172A (en) * | 2021-05-25 | 2021-08-06 | 宜宾学院 | Basalt fiber anchor rod for slope support |
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