CN103422871A - Truss cable arrangement method for controlling super-large-section open-off cut roof - Google Patents
Truss cable arrangement method for controlling super-large-section open-off cut roof Download PDFInfo
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- CN103422871A CN103422871A CN2013103730800A CN201310373080A CN103422871A CN 103422871 A CN103422871 A CN 103422871A CN 2013103730800 A CN2013103730800 A CN 2013103730800A CN 201310373080 A CN201310373080 A CN 201310373080A CN 103422871 A CN103422871 A CN 103422871A
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000000178 monomer Substances 0.000 claims description 25
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000005641 tunneling Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 239000003245 coal Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The invention discloses a truss cable arrangement method for controlling a super-large-section open-off cut roof. The truss cable arrangement method comprises the following steps: tunnelling of a first-section tunnel is carried out, a row of first anchor rods A1 is arranged on the corresponding roof when the tunnelling for a first distance is completed, moreover, first truss cable systems B1 and first single anchor cables C1 are arranged on the corresponding roof during tunnelling, the first single anchor cables C1 are enabled to be positioned between two adjacent first truss cable systems B1; tunnelling of a first-section tunnel is carried out, a row of second anchor rods A2 is arranged on the corresponding roof when the tunnelling reaches a position corresponding to the first anchor rods; second truss cable systems B2 are arranged on the corresponding roof when the tunnelling reaches a position corresponding to the first truss cable systems B1; second single anchor cables C2 are arranged on the corresponding roof when the tunnelling reaches a position corresponding to the first single anchor cables C1, and a third truss cable system B3 is arranged on the communicating part of the first-section tunnel and the second-section tunnel. The open-off cut roof with the section width range of 7-12m can be supported and effectively and safely.
Description
Technical field
The present invention relates to laneway support method, relate in particular to a kind of girders anchorage cable method for arranging for extra-large cross-section open-off cut Roof Control.
Background technology
In coal mining, the normal span length of producing generally is no more than 6 meters, and open-off cut generally is no more than 9m, takes the supporting measures such as general anchor pole-anchor cable-net or its combination to be effective.Along with coal in China is exploited the increasing of scale, the device category that the extraction technique progress is used is more and more advanced, and volume is increasing, and the section in tunnel is also increasing.Drift section is wider, is subject to the impact of geostatic stress larger, and distortion is just more obvious, and the danger of collapsing is also higher, and the increase of drift section makes roadway support face huge difficulty, has had a strong impact on the safety of coal mines High-efficient Production.
Summary of the invention
Purpose of the present invention is exactly the problem existed in order to overcome above-mentioned prior art, and a kind of girders anchorage cable method for arranging of extra-large cross-section open-off cut Roof Control is provided, and can realize effective, the safety support of section width scope at the open-off cut top board of 9 meters～12 meters.
For realizing above-mentioned purpose of the present invention, provide following technical scheme:
A kind of girders anchorage cable method for arranging of extra-large cross-section open-off cut Roof Control, comprise the step of carrying out as follows: the driving that carries out the first section tunnel, every driving the first distance arranges that on its top board one ranked first anchor pole, and the first girders anchorage cable system and the first monomer anchor cable are arranged in driving limit, limit on its top board, make the first monomer anchor cable between adjacent two first girders anchorage cable systems; Carry out the driving of the second section tunnel, every driving to the first anchor pole correspondence position, arrange that on its top board one ranked second anchor pole; Every driving to the first girders anchorage cable system correspondence position, arrange the second girders anchorage cable system on its top board; Every driving to the first monomer anchor cable correspondence position, arrange the second monomer anchor cable on its top board, in the first section tunnel and the second section tunnel connectivity part layout the 3rd girders anchorage cable system; Wherein, the width of the first section tunnel is greater than the second section tunnel, and the first section tunnel and the second section tunnel are communicated with the described extra-large cross-section open-off cut of formation.
Preferably, described the first distance is d1, and the distance between adjacent described the first girders anchorage cable system is d2,0.8m≤d1≤1.4m; 3.2m≤d2≤12m.
Preferably, described layout the first girders anchorage cable system comprises the step of carrying out as follows: throw the first girders anchorage cable on the top board of described the first section tunnel, make the first girders anchorage cable in vertical direction with the β angle; Throw the second girders anchorage cable on the top board of described the first section tunnel, make the second girders anchorage cable and the first girders anchorage cable along lateral arrangement and be positioned at same perpendicular, the second girders anchorage cable is in vertical direction with the γ angle; Adopt locker that the first girders anchorage cable is connected with the second girders anchorage cable.
Preferably, the second girders anchorage cable system of arranging comprises the step of carrying out as follows: throw the 3rd girders anchorage cable on the top board of described the second section tunnel, make the 3rd girders anchorage cable in vertical direction with the β angle; Throw the 4th girders anchorage cable on the top board of described the second section tunnel, make the 4th girders anchorage cable and the 3rd girders anchorage cable along lateral arrangement and be positioned at same perpendicular, the 4th girders anchorage cable is in vertical direction with the γ angle; Adopt locker that the 3rd girders anchorage cable is connected with the 4th girders anchorage cable.
Preferably, 0≤β≤15 °, 0≤γ≤8 °.
Preferably, the first girders anchorage cable and described the 3rd girders anchorage cable tilt towards the lane, both sides of described open-off cut side respectively, and described the second girders anchorage cable and the 4th girders anchorage cable be centroclinal towards described open-off cut respectively.
Preferably, the span between the second girders anchorage cable and the first girders anchorage cable is H1, and the span between the 4th girders anchorage cable and the 3rd girders anchorage cable is H1.
Preferably, the 3rd girders anchorage cable system of arranging comprises the step of carrying out as follows: throw the 5th girders anchorage cable on the top board of described the first section tunnel into; Throw the 6th girders anchorage cable on the top board of described the second section tunnel, make the 6th girders anchorage cable and the 5th girders anchorage cable lateral arrangement and be positioned at same perpendicular, the 5th girders anchorage cable and the 6th girders anchorage cable tilt towards lane, the both sides side of described open-off cut respectively; Adopt locker that the 5th girders anchorage cable is connected with the 6th girders anchorage cable.
Preferably, the 5th girders anchorage cable and the 6th girders anchorage cable be respectively in vertical direction with the α angle, 0≤α≤12 °.
Preferably, the span between the 6th girders anchorage cable and the 5th girders anchorage cable is H2,0≤H2-H1≤2m.
Beneficial effect of the present invention embodies in the following areas:
The present invention adopts secondary to become the lane method to carry out the driving of extra-large cross-section open-off cut, and arrange the 3rd girders anchorage cable system at the second section tunnel and the first section tunnel connectivity part between adjacent two first girders anchorage cable systems or the second girders anchorage cable system, in order to control the vertical load of extra-large cross-section open-off cut zone line top board, prevent the excessive roof destruction caused of central region tensile stress, effect is remarkable; And make two anchor cables in the first girders anchorage cable system and the second girders anchorage cable system respectively towards lane side and centroclinal, and be different angle from vertical direction, in order to meet the needs of zones of different anchoring, dependable performance.
The accompanying drawing explanation
Fig. 1 is the girders anchorage cable arrangement diagram of extra-large cross-section open-off cut Roof Control of the present invention;
Fig. 1 a is the tunneling process figure of the present invention's the first section tunnel;
Fig. 1 b is the tunneling process figure of the second section tunnel of the present invention;
Fig. 2 is the sectional view of extra-large cross-section open-off cut of the present invention.
Description of reference numerals: 1-the first section tunnel; 2-the second section tunnel; 10,20-anchor pole; 11-the first girders anchorage cable; 12-the second girders anchorage cable; The 13-locker; 21-the 3rd girders anchorage cable; 22-the 4th girders anchorage cable; The 23-locker; 31-the 5th girders anchorage cable; 32-the 6th girders anchorage cable; The 33-locker; A1-the first anchor pole; A2-the second anchor pole; B1-the first girders anchorage cable system; C1-the first monomer anchor cable; B2-the second girders anchorage cable system; B3-the 3rd girders anchorage cable system; C2-the second monomer anchor cable.
The specific embodiment
Fig. 1 is the girders anchorage cable arrangement diagram of extra-large cross-section open-off cut Roof Control of the present invention; Fig. 2 is the sectional view of extra-large cross-section open-off cut of the present invention; As shown in Figure 1, 2, the present invention adopts secondary to become the method in lane, driving forms the extra-large cross-section open-off cut in two steps, at first tunnel the first section tunnel 1, the supporting of its top board is carried out on driving limit, limit, then tunnels the second section tunnel 2, and the supporting of its top board is carried out on driving limit, limit, the width of the first section tunnel 1 is greater than the second section tunnel, and the first section tunnel 1 and the second section tunnel 2 are communicated with formation extra-large cross-section open-off cut of the present invention.
Particularly, as shown in Figure 1, 2, the girders anchorage cable method for arranging of extra-large cross-section open-off cut Roof Control of the present invention comprises the step of carrying out as follows:
At first, tunnel the first section tunnel 1 towards the direction of arrow in Fig. 1 a, every driving first just arranges on its top board that apart from d1 one ranked first anchor pole A1, as shown in Figure 1a, every row's anchor pole A1 comprises along the first section tunnel 1 a plurality of anchor poles 10 that laterally width of the first section tunnel (along) arranged, a plurality of anchor poles 10 are positioned at same perpendicular, and each anchor pole 10 is vertical with top board respectively, a plurality of anchor poles 10 are connected to form integral body by a reinforcing bar ladder, every row's anchor pole A1 shown in Fig. 1 comprises 6 anchor poles 10, the number of anchor pole 10 can be arranged according to the width of the first section tunnel 1, wherein, 0.8m≤d1≤1.4m.And, the first girders anchorage cable system B1 and the first monomer anchor cable C1 are arranged in driving limit, limit on its top board, making the distance between adjacent the first girders anchorage cable system B1 is d2, and each first girders anchorage cable system B1 is between adjacent two row's anchor pole A1, the first monomer anchor cable C1 is between adjacent two first girders anchorage cable system B1, and the first monomer anchor cable C1 extremely distance between adjacent first a girders anchorage cable system B1 is 1/2d2, wherein, 3.2m≤d2≤12m; The first monomer anchor cable C1 is perpendicular to top board, and is positioned at along the plane of the first section tunnel horizontal expansion.For example, as shown in Figure 1a, when the direction along arrow is tunneled to the Z1 position, just on its top board in arrangement diagram 1a along first girders anchorage cable system B1 of the direction of arrow, then continue driving, when tunneling to the Z2 position, just arrange row's anchor pole A1 on its top board, continue again afterwards driving, when tunneling to the Z3 position, arrange again row's anchor pole A1 on its top board, continue afterwards driving, when tunneling to the Z4 position, throw first a monomer anchor cable C1 on its top board, continue again afterwards driving, in such a manner until whole the first section tunnel driving is complete.
Wherein, the present invention arranges that the first girders anchorage cable system B1 comprises the step of carrying out as follows: throw the first girders anchorage cable 11 on the top board of the first section tunnel, as shown in Figure 2; Afterwards, throw the second girders anchorage cable 12 on the top board of the first section tunnel, make the second girders anchorage cable 12 and the first girders anchorage cable 11 along lateral arrangement and be positioned at same perpendicular, and, the first girders anchorage cable 11 and the second girders anchorage cable 12 tilt towards the both sides of the first section tunnel respectively, make the first girders anchorage cable 11 in vertical direction with the β angle, so that the anchor point of the first girders anchorage cable 11 is positioned at rib, institute planar surveys, anchor point is stable, the second girders anchorage cable is in vertical direction with the γ angle, in order to control the vertical load of open-off cut central area; Wherein, 0≤β≤15 °, 0≤γ≤8 °; Span between the second girders anchorage cable and the first girders anchorage cable is H1.Finally adopt locker 13 that the first girders anchorage cable is connected with the second girders anchorage cable.Locker 13 of the present invention is prior art, and the method that no longer it is connected to the first girders anchorage cable and the second girders anchorage cable at this is described in detail.
After the first section tunnel driving, tunnel the second section tunnel 2, the second section tunnels 2 towards the direction of arrow in Fig. 1 b and be communicated with the first section tunnel 1, form extra-large cross-section open-off cut of the present invention.The method of the second section tunnel driving is: every driving to the first anchor pole A1 aligned position, just arrange on its top board that one ranked second anchor pole A2, as shown in Figure 1 b, every row's anchor pole A2 comprises along the second section tunnel 2 a plurality of anchor poles 20 that laterally width of the second section tunnel (along) arranged, a plurality of anchor poles 20 are positioned at same perpendicular, and each anchor pole 20 is vertical with top board respectively, a plurality of anchor poles 20 connect into integral body by a reinforcing bar ladder; Every row's anchor pole A2 shown in Fig. 1 comprises 4 anchor poles 20, and the number of anchor pole 20 can be arranged according to the width of the second section tunnel 2; Every driving to the first girders anchorage cable system B1 aligned position, arrange the second girders anchorage cable system B2 on its top board; Every driving to the first monomer anchor cable C1 aligned position, arrange the second monomer anchor cable C2 on its top board, arrange the 3rd girders anchorage cable system B3 at the first section tunnel 1 and the second section tunnel 2 connectivity parts, make each second girders anchorage cable system B2 between adjacent two row's anchor pole A2, the second monomer anchor cable C2 is between adjacent two second girders anchorage cable system B2, the 3rd girders anchorage cable system B3 is between adjacent two second girders anchorage cable system B2, and, in the horizontal, the 3rd girders anchorage cable system B3 is between the first monomer anchor cable C1 and the second monomer anchor cable C2.The the second monomer anchor cable C2 extremely distance between adjacent second a girders anchorage cable system B2 is 1/2d2, wherein, and 3.2m≤d2≤12m; The second monomer anchor cable C2 is perpendicular to top board, and is positioned at along the plane of the second section tunnel horizontal expansion.
For example, as shown in Figure 1 b, when the direction along arrow is tunneled to the Y1 position (in corresponding diagram 1b along last first girders anchorage cable system B1 of the direction of arrow), just on its top board in arrangement diagram 1b along first the second girders anchorage cable system B2 of the direction of arrow, then continue driving, when tunneling to the Y2 position, just arrange row's anchor pole A2 on its top board, continue again afterwards driving, when tunneling to the Y3 position, arrange again row's anchor pole A1 on its top board, continue afterwards driving, when tunneling to the Y4 position, throw second a monomer anchor cable C2 on its top board, and arrange the 3rd a girders anchorage cable system B3 between the first section tunnel to should position and the second section tunnel, make the 3rd girders anchorage cable system B3 between should the second monomer anchor cable C2 and the first monomer anchor cable C1 of position.Continue again afterwards driving, in such a manner until whole the second section tunnel 2 drivings are complete.
Wherein, the present invention arranges that the second girders anchorage cable system B2 comprises the step of carrying out as follows: throw the 3rd girders anchorage cable 21 on the top board of the second section tunnel into, afterwards, throw the 4th girders anchorage cable 22 on the top board of the second section tunnel, make the 4th girders anchorage cable 22 and the 3rd girders anchorage cable 21 along lateral arrangement and be positioned at same perpendicular, and, the 3rd girders anchorage cable 21 and the 4th girders anchorage cable 22 tilt towards the both sides of the second section tunnel respectively, as shown in Figure 2, make the 3rd girders anchorage cable 21 in vertical direction with the β angle, so that the anchor point of the 3rd girders anchorage cable 21 is positioned at rib, institute planar surveys, anchor point is stable, the 4th girders anchorage cable is in vertical direction with the γ angle, in order to control the vertical load of open-off cut central area, wherein, 0≤β≤15 °, 0≤γ≤8 °, span between the 3rd girders anchorage cable and the 4th girders anchorage cable is H1.Finally adopt locker 23 that the 3rd girders anchorage cable is connected with the 4th girders anchorage cable.Locker 23 of the present invention is prior art, and the method that no longer it is connected to the first girders anchorage cable and the second girders anchorage cable at this is described in detail.
The present invention arranges that the 3rd girders anchorage cable system B3 comprises the step of carrying out as follows: throw the 5th girders anchorage cable 31 on the top board of the first section tunnel into; Afterwards, throw the 6th girders anchorage cable 32 on the top board of the second section tunnel, make the 6th girders anchorage cable 32 and the 5th girders anchorage cable 31 lateral arrangement and be positioned at same perpendicular, the 5th girders anchorage cable 31 and the 6th girders anchorage cable 32 tilt towards lane, the both sides side of open-off cut respectively; As shown in Figure 2, the 5th girders anchorage cable and the 6th girders anchorage cable are respectively in vertical direction with the α angle, 0≤α≤12 °, in order to control the vertical load of open-off cut zone line top board, prevent the excessive roof destruction caused of open-off cut central region tensile stress, span between the 6th girders anchorage cable and the 5th girders anchorage cable is H2,0≤H2-H1≤2m.Finally adopt locker 33 that the 5th girders anchorage cable is connected with the 6th girders anchorage cable.As shown in Figure 1, each locker 33De center corresponding of the present invention he interrupt the center of face open-off cut.
Although above-mentioned, the present invention is described in detail; but the invention is not restricted to this; those skilled in the art can principle according to the present invention modify, and therefore, all various modifications of carrying out according to principle of the present invention all should be understood to fall into protection scope of the present invention.
Claims (10)
1. the girders anchorage cable method for arranging of an extra-large cross-section open-off cut Roof Control comprises the step of carrying out as follows:
Carry out the driving of the first section tunnel, every driving the first distance arranges that on its top board one ranked first anchor pole A1, and the first girders anchorage cable system B1 and the first monomer anchor cable C1 are arranged in driving limit, limit on its top board, make the first monomer anchor cable C1 between adjacent two first girders anchorage cable system B1;
Carry out the driving of the second section tunnel, every driving to the first anchor pole correspondence position, arrange that on its top board one ranked second anchor pole A2; Every driving to the first girders anchorage cable system B1 correspondence position, arrange the second girders anchorage cable system B2 on its top board; Every driving to the first monomer anchor cable C1 correspondence position, arrange the second monomer anchor cable C2 on its top board, at the first section tunnel and the second section tunnel connectivity part layout the 3rd girders anchorage cable system B3;
Wherein, the width of the first section tunnel is greater than the second section tunnel, and the first section tunnel and the second section tunnel are communicated with the described extra-large cross-section open-off cut of formation.
2. the method for claim 1, is characterized in that, described the first distance is d1, and the distance between adjacent described the first girders anchorage cable system B1 is d2,0.8m≤d1≤1.4m; 3.2m≤d2≤12m.
3. method as claimed in claim 1 or 2, is characterized in that, described layout the first girders anchorage cable system B1 comprises the step of carrying out as follows:
Throw the first girders anchorage cable on the top board of described the first section tunnel, make the first girders anchorage cable in vertical direction with the β angle;
Throw the second girders anchorage cable on the top board of described the first section tunnel, make the second girders anchorage cable and the first girders anchorage cable along lateral arrangement and be positioned at same perpendicular, the second girders anchorage cable is in vertical direction with the γ angle;
Adopt locker that the first girders anchorage cable is connected with the second girders anchorage cable.
4. method as claimed in claim 3, is characterized in that, described layout the second girders anchorage cable system B2 comprises the step of carrying out as follows:
Throw the 3rd girders anchorage cable on the top board of described the second section tunnel, make the 3rd girders anchorage cable in vertical direction with the β angle;
Throw the 4th girders anchorage cable on the top board of described the second section tunnel, make the 4th girders anchorage cable and the 3rd girders anchorage cable along lateral arrangement and be positioned at same perpendicular, the 4th girders anchorage cable is in vertical direction with the γ angle;
Adopt locker that the 3rd girders anchorage cable is connected with the 4th girders anchorage cable.
5. method as claimed in claim 4, is characterized in that, 0≤β≤15 °, 0≤γ≤8 °.
6. method as claimed in claim 5, it is characterized in that, described the first girders anchorage cable and described the 3rd girders anchorage cable tilt towards the lane, both sides of described open-off cut side respectively, and described the second girders anchorage cable and the 4th girders anchorage cable be centroclinal towards described open-off cut respectively.
7. method as claimed in claim 6, is characterized in that, the span between described the second girders anchorage cable and the first girders anchorage cable is H1, and the span between the 4th girders anchorage cable and the 3rd girders anchorage cable is H1.
8. method as claimed in claim 7, is characterized in that, described layout the 3rd girders anchorage cable system comprises the step of carrying out as follows:
Throw the 5th girders anchorage cable on the top board of described the first section tunnel;
Throw the 6th girders anchorage cable on the top board of described the second section tunnel, make the 6th girders anchorage cable and the 5th girders anchorage cable lateral arrangement and be positioned at same perpendicular, the 5th girders anchorage cable and the 6th girders anchorage cable tilt towards lane, the both sides side of described open-off cut respectively;
Adopt locker that the 5th girders anchorage cable is connected with the 6th girders anchorage cable.
9. method as claimed in claim 8, is characterized in that, described the 5th girders anchorage cable and the 6th girders anchorage cable be respectively in vertical direction with the α angle, 0≤α≤12 °.
10. method as claimed in claim 8, is characterized in that, the span between the 6th girders anchorage cable and the 5th girders anchorage cable is H2,0≤H2-H1≤2m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310373080.0A CN103422871B (en) | 2013-08-23 | 2013-08-23 | A kind of girders anchorage cable method for arranging of extra-large cross-section open-off cut Roof Control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310373080.0A CN103422871B (en) | 2013-08-23 | 2013-08-23 | A kind of girders anchorage cable method for arranging of extra-large cross-section open-off cut Roof Control |
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| Publication Number | Publication Date |
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| CN103422871A true CN103422871A (en) | 2013-12-04 |
| CN103422871B CN103422871B (en) | 2015-10-14 |
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| CN201310373080.0A Active CN103422871B (en) | 2013-08-23 | 2013-08-23 | A kind of girders anchorage cable method for arranging of extra-large cross-section open-off cut Roof Control |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104141503A (en) * | 2014-06-28 | 2014-11-12 | 四川省华蓥山煤业股份有限公司绿水洞煤矿 | Sharp inclination fully mechanized coal face open-off cut square supporting method |
| CN108518234A (en) * | 2018-03-27 | 2018-09-11 | 中国矿业大学(北京) | A kind of wrong title formula anchor cable method for arranging of extra-large cross-section open-off cut Roof Control |
| CN109488353A (en) * | 2018-10-23 | 2019-03-19 | 新汶矿业集团有限责任公司 | A kind of stope advance support system and method |
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| US4679967A (en) * | 1985-07-25 | 1987-07-14 | F. M. Locotos Co., Inc. | Truss bracket |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141503A (en) * | 2014-06-28 | 2014-11-12 | 四川省华蓥山煤业股份有限公司绿水洞煤矿 | Sharp inclination fully mechanized coal face open-off cut square supporting method |
| CN108518234A (en) * | 2018-03-27 | 2018-09-11 | 中国矿业大学(北京) | A kind of wrong title formula anchor cable method for arranging of extra-large cross-section open-off cut Roof Control |
| CN109488353A (en) * | 2018-10-23 | 2019-03-19 | 新汶矿业集团有限责任公司 | A kind of stope advance support system and method |
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| Publication number | Publication date |
|---|---|
| CN103422871B (en) | 2015-10-14 |
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