CN201902218U - Anchor rod and anchor cable supporting device - Google Patents
Anchor rod and anchor cable supporting device Download PDFInfo
- Publication number
- CN201902218U CN201902218U CN2010206869465U CN201020686946U CN201902218U CN 201902218 U CN201902218 U CN 201902218U CN 2010206869465 U CN2010206869465 U CN 2010206869465U CN 201020686946 U CN201020686946 U CN 201020686946U CN 201902218 U CN201902218 U CN 201902218U
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- boring
- millimeters
- anchor cable
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Abstract
The utility model provides an anchor rod and anchor cable supporting device which comprises a top plate, a plurality of steel belts, a plurality of anchor rods and a plurality of anchor cables, wherein two arrays of drilling holes are arranged in the top plate and form a matrix form through uniform deformation, the second array of drilling holes is arranged every two lines and two rows oppositely to the first array of drilling holes, the vertical row spacing and the transverse row spacing of the second array of drilling holes are 1.5-2.5 times of those of the first array of drilling holes; the steel belts are all fixed below each row or each line of the first array of drilling holes and are tightly attached onto the lower surface of the top plate, and through holes formed on the steel tapes are aligned with the corresponding one of the first array of drilling holes; each anchor rod passes through the through holes on the steel tapes, then is anchored to the corresponding one of the first array of drilling holes and is fixed on the top plate by an anchor rod tray and a nut; the end part of each anchor cable passes through the corresponding one of the second array of drilling holes to be exposed out, and the exposed end part is fixed on channel steel through an anchor cable tray and a rigging. With the adoption of the anchor rod and anchor cable supporting device, the stability of a narrow coal pillar can be ensured, and the induced damage mode of the narrow coal pillar can be prevented.
Description
Technical field
The utility model relates to a kind of anchor shaft anchor cable suspension device.
Background technology
At present, in the performing comprehensive coal mining work plane, according to current actual production technical condition, arranging that coal-face carries out in the process of back production, generally stay the coal pillar width established generally between 20-30 rice, this can cause a large amount of Coal Loss, is unfavorable for the long term growth of mine.
Correspondingly, employing supporting roadway with narrow coal pillar technology has been proposed in this area.Adopt this technical arrangement stope drift active workings, reduced coal pillar width, help improving coal recovery rate, alleviate the coal mine excavation nervous contradiction that continues, increase mine economic benefit, enhance productivity and guarantee the back production of work plane safety.
Yet if adopt the supporting roadway with narrow coal pillar technology, when adopting supporting roadway with narrow coal pillar in the tunnel, the tunnel is easy to occur deformation failure.Especially under the bigger situation of measure lane height, when adopting supporting roadway with narrow coal pillar, the most probable the greatest danger in tunnel comes from the stability of narrow coal column.Therefore, especially under the situation in this type of tunnel, focus on preventing the failure mode of narrow coal column induction type.
In fact, bolt support technology has obtained applying to a certain degree in the tunnel.Yet, see that with practical conditions establish in the supporting roadway with narrow coal pillar staying, those skilled in the art also do not tackle bolt support technology and carried out further investigation.
The utility model content
At problems of the prior art and demand, the utility model provides a kind of anchor shaft anchor cable suspension device, in the hope of guaranteeing the stability of narrow coal column, prevents the failure mode of narrow coal column induction type.
Particularly, the utility model provides a kind of anchor shaft anchor cable suspension device, comprising:
Top board, be furnished with boring of first array and the boring of second array in the top board, boring of first array and the boring of second array all form matrix form, second array boring arranges every two row and two row with respect to the boring of first array, between second array boring vertical array pitch and laterally between array pitch be 1.5-2.5 times of first array boring;
Many steel bands, every steel band are fixed on every row or every row below of first array boring, and this steel band is close on the soffit of top board, on the described steel band perforation is set, and perforation is aimed at during first array is holed corresponding one;
Many anchor poles, every anchor pole pass perforation on the described steel band and anchor in the boring of first array corresponding one again, are fixed on the top board by the anchor pole pallet;
Many anchor cables, an end of every anchor cable pass corresponding and expose in second array boring, and the end of exposing is fixed on the U-steel by anchor cable pallet and rigging.
Preferably, array pitch is 750 millimeters-850 millimeters between described first array boring vertical, and array pitch is 750 millimeters-850 millimeters laterally.
Preferably, the width of top board is a 4.4-4.8 rice, highly is 3.6-4.0 rice.
Preferably, described anchor pole is a complete set of anchor pole with the full thread high-performance body of rod and high-intensity supporting plate.
Preferably, the body of rod of described anchor pole is the vertical concrete steel muscle of the left-handed nothing of 22#, and the bar tail screw thread of described anchor pole is M24.
Preferably, two row at the most close top board edge and the vertical direction of two row anchor poles and top board are angled, and all the other anchor poles become vertical relation with top board.
More preferably, described certain angle is 20 °.
Preferably, described anchor pole pallet is not less than 120 millimeters * 120 millimeters * 10 millimeters.
Preferably, described anchor cable pallet is not less than 300 millimeters * 300 millimeters * 16 millimeters.
Preferably, between second array boring vertical array pitch and laterally between array pitch be 2 times of first array boring.
Preferably, on the upper surface of top board, overlay the layer of metal net.
Employing has solved problems of the prior art effectively according to anchor shaft anchor cable suspension device of the present utility model, in the process of comprehensive back production, can guarantee the stability of narrow coal column, prevents the failure mode of narrow coal column induction type.
Description of drawings
Hereinafter, describe the utility model in detail with reference to accompanying drawing.Described accompanying drawing is as follows:
Fig. 1 illustrates the complete sectional view according to the anchor shaft anchor cable suspension device of an embodiment of the present utility model, wherein mainly illustrates the distribution of anchor pole;
Fig. 2 illustrates the complete sectional view according to the anchor shaft anchor cable suspension device of an embodiment of the present utility model, wherein mainly illustrates the distribution of anchor cable.
The specific embodiment
Hereinafter, identical Reference numeral refers to components identical.
Fig. 1 illustrates the complete sectional view according to the anchor shaft anchor cable suspension device 100 of an embodiment of the present utility model, wherein mainly illustrates the distribution of anchor pole 102.As shown in Figure 1, anchor shaft anchor cable suspension device 100 comprises top board 101 and anchor pole 102.
The overall dimension of top board 101 is determined with concrete drift section.In engineering, the width of top board 101 can be made as 4.4-4.8 rice, highly be made as 3.6-4.0 rice, preferably, the width of top board 101 is 4.6 meters, highly is 3.8 meters.
But anchor pole 102 of anchoring in each boring 103.In actual engineering, anchor pole 102 can adopt a complete set of anchor pole with the full thread high-performance body of rod and high-intensity supporting plate.Anchor rod body can adopt the left-handed nothing of 22# to indulge the concrete steel muscle, and bar tail screw thread is M24.The diameter of anchor rod body can be 22 millimeters, and the length of anchor pole 102 can be 2.6 meters.Every anchor pole 102 all can use 3 volume resin explosive rolls to be anchored in the corresponding boring 103, and the anchor pole prefastening torque that anchor pole 102 is anchored in the boring 103 should reach more than 400N * M usually.
Because first array boring 103 presents matrix shape, therefore when all anchor poles 102 all anchored in separately the boring 103, all anchor poles 102 also presented matrix shape.Two row and the two row anchor poles 102 at the most close top board 101 edges are angled with the vertical direction of top board 101, are preferably 20 ° of angles.And 101 one-tenth vertical relations of remaining anchor pole 102 and top board.
Preferably, can below every row of first array boring 103 or every row, fix a steel band, this steel band is close on the soffit of top board 101, perforation is set on the steel band, perforation is aimed at boring 103, thereby the perforation that every anchor pole 102 was passed before anchoring to boring 103 on the steel band in advance anchors to boring 103 again, fixes by pallet then.Preferably, the anchor pole pallet is not less than 120 millimeters * 120 millimeters * 10 millimeters.
If do not install this steel band additional, abutment pressure will be carried on the every anchor pole 102 one by one, thereby make anchor pole 102 bear bigger load.And installed additional after this steel band, the anchor pole 102 on a permutation or a full line will bear identical load together, be linear pressure even surface pressure thereby point pressure shared, and the load that anchor pole 102 is born greatly reduces.
Described steel band can be selected T type or M steel band of model for use, and thickness is preferably more than 5 millimeters.
In addition, preferably, can on the upper surface of top board 101, overlay the layer of metal net, be preferably diamond mesh.Top board 101 itself is used for heavy load to be supported.Yet well-known, coal mine roadway back warp regular meeting falls granules such as ut, if let alone to drop, may influence production safety.Therefore, preferably, consider this situation, on the upper surface of top board 101, overlay the layer of metal net, thereby can stop effectively that the tunnel small particles continues to fall.
Anchor shaft anchor cable suspension device 100 further comprises many anchor cables 202.Fig. 2 illustrates the complete sectional view according to the anchor shaft anchor cable suspension device 100 of an embodiment of the present utility model, wherein mainly illustrates the distribution of anchor cable 202.
As shown in Figure 2, on top board same as shown in Figure 1 101, arrange second array boring 203.With first array boring 103 similarly is that second array boring 203 also is matrix shape.Yet, holing with first array 103 different is, on the position, second array boring 203 is generally holed every 2 row and two row and 103 arranged, correspondingly, between second array boring 203 vertical array pitch and laterally between array pitch be 1.5 times to 2.5 times of first array boring 103.In the embodiment shown in Figure 2, between second array boring 203 vertical array pitch and laterally between array pitch be 2 times of first array boring 103.That is to say, between first array boring 103 vertical array pitch and laterally between array pitch be under 800 millimeters the situation, between second array boring 203 vertical array pitch and laterally between array pitch be 1600 millimeters.
An end of every anchor cable 202 can pass each boring 203, thus the end that makes anchor cable 202 203 expose from holing, the end of exposing is fixed on the U-steel 204 by pallet and rigging, thereby makes the supporting traverse of U-steel 204 as every anchor cable 202.The anchor cable pallet is not less than 300 millimeters * 300 millimeters * 16 millimeters.Anchor cable 202 can be made of steel strand, and steel strand employing diameter is 21.6 millimeters a low relaxed prestress steel strand.According to different situations, its length difference, prestressing force also can correspondingly be adjusted.
When constructing under special geologic condition, as the location that tunnel wall rock condition of living in changes, back is comparatively broken, the string bag is many, just array pitch between anchor pole further must be reduced or reset.
Employing has solved problems of the prior art effectively according to anchor shaft anchor cable suspension device of the present utility model, in the process of performing comprehensive coal mining, can guarantee the stability of narrow coal column, prevents the failure mode of narrow coal column induction type.
Those skilled in the art will also be appreciated that protection domain of the present utility model is not limited in the foregoing description, and all drop in the scope of the present utility model equivalents of the present utility model.
Claims (10)
1. an anchor shaft anchor cable suspension device (100) is characterized in that, comprising:
Top board (101), be furnished with first array boring (103) and second array boring (203) in the top board (101), first array boring (103) and second array boring (203) all form matrix form, second array boring (203) arranges every two row and two row with respect to first array boring (103), between second array boring (203) vertical array pitch and laterally between array pitch be 1.5-2.5 times of first array boring (103);
Many steel bands, every steel band are fixed on every row or every row below of first array boring (103), and this steel band is close on the soffit of top board (101), on the described steel band perforation is set, and corresponding of holing in (103) aims at for perforation and first array;
Many anchor poles (102), every anchor pole (102) pass perforation on the described steel band and anchor in first array boring (103) corresponding one again, are fixed on the top board (101) by the anchor pole pallet;
Many anchor cables (202), an end of every anchor cable (202) pass corresponding and expose in second array boring (203), and the end of exposing is fixed on the U-steel (204) by anchor cable pallet and rigging.
2. anchor shaft anchor cable suspension device according to claim 1 (100) is characterized in that, array pitch is 750 millimeters-850 millimeters between described first array boring (103) vertical, and array pitch is 750 millimeters-850 millimeters laterally.
3. anchor shaft anchor cable suspension device according to claim 1 (100) is characterized in that, the width of top board (101) is a 4.4-4.8 rice, highly is 3.6-4.0 rice.
4. anchor shaft anchor cable suspension device according to claim 1 (100) is characterized in that, described anchor pole (102) is a complete set of anchor pole with the full thread high-performance body of rod and high-intensity supporting plate.
5. anchor shaft anchor cable suspension device according to claim 4 (100) is characterized in that, the body of rod of described anchor pole (102) is the vertical concrete steel muscle of the left-handed nothing of 22#, and the bar tail screw thread of described anchor pole (102) is M24.
6. anchor shaft anchor cable suspension device according to claim 1 (100), it is characterized in that, two row and the two row anchor poles (102) at the most close top board (101) edge are angled with the vertical direction of top board (101), and all the other anchor poles (102) become vertical relation with top board (101).
7. anchor shaft anchor cable suspension device according to claim 6 (100) is characterized in that, described certain angle is 20 °.
8. anchor shaft anchor cable suspension device according to claim 1 (100) is characterized in that, described anchor pole pallet is not less than 120 millimeters * 120 millimeters * 10 millimeters, and/or described anchor cable pallet is not less than 300 millimeters * 300 millimeters * 16 millimeters.
9. anchor shaft anchor cable suspension device according to claim 1 (100) is characterized in that, overlays the layer of metal net on the upper surface of top board (101).
10. anchor shaft anchor cable suspension device according to claim 1 (100) is characterized in that, between second array boring (203) vertical array pitch and laterally between array pitch be 2 times of first array boring (103).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206869465U CN201902218U (en) | 2010-12-17 | 2010-12-17 | Anchor rod and anchor cable supporting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206869465U CN201902218U (en) | 2010-12-17 | 2010-12-17 | Anchor rod and anchor cable supporting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201902218U true CN201902218U (en) | 2011-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206869465U Expired - Lifetime CN201902218U (en) | 2010-12-17 | 2010-12-17 | Anchor rod and anchor cable supporting device |
Country Status (1)
| Country | Link |
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| CN (1) | CN201902218U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670465A (en) * | 2013-12-12 | 2014-03-26 | 青海省能源发展（集团）有限责任公司 | Supporting frame of roadway surrounding rock |
| CN103742177A (en) * | 2013-12-30 | 2014-04-23 | 北京科技大学 | High mine pressure roadway support design method |
| CN105626095A (en) * | 2015-12-29 | 2016-06-01 | 大同煤矿集团有限责任公司 | Small coal pillar protection roadway surrounding rock support method under condition of coal seam group mining hard roof |
| CN106761867A (en) * | 2016-12-23 | 2017-05-31 | 四川广旺能源发展（集团）有限责任公司 | High-dipping surrounding rock of actual mining roadway stabilization supporting facility and support process |
| CN107461215A (en) * | 2017-08-29 | 2017-12-12 | 河南理工大学 | A kind of back timber formula anchor cable constant-resistance structure and its installation method |
-
2010
- 2010-12-17 CN CN2010206869465U patent/CN201902218U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670465A (en) * | 2013-12-12 | 2014-03-26 | 青海省能源发展（集团）有限责任公司 | Supporting frame of roadway surrounding rock |
| CN103742177A (en) * | 2013-12-30 | 2014-04-23 | 北京科技大学 | High mine pressure roadway support design method |
| CN103742177B (en) * | 2013-12-30 | 2016-03-02 | 北京科技大学 | A kind of strong ore deposit pressure roadway support design method |
| CN105626095A (en) * | 2015-12-29 | 2016-06-01 | 大同煤矿集团有限责任公司 | Small coal pillar protection roadway surrounding rock support method under condition of coal seam group mining hard roof |
| CN106761867A (en) * | 2016-12-23 | 2017-05-31 | 四川广旺能源发展（集团）有限责任公司 | High-dipping surrounding rock of actual mining roadway stabilization supporting facility and support process |
| CN107461215A (en) * | 2017-08-29 | 2017-12-12 | 河南理工大学 | A kind of back timber formula anchor cable constant-resistance structure and its installation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110720 |
|
| CX01 | Expiry of patent term |