CN109630168A - Comprehensive extracting and caving face tunnel is arranged along floor strata and support pattern - Google Patents
Comprehensive extracting and caving face tunnel is arranged along floor strata and support pattern Download PDFInfo
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- CN109630168A CN109630168A CN201910098386.7A CN201910098386A CN109630168A CN 109630168 A CN109630168 A CN 109630168A CN 201910098386 A CN201910098386 A CN 201910098386A CN 109630168 A CN109630168 A CN 109630168A
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- 239000003245 coal Substances 0.000 claims abstract description 62
- 230000008093 supporting effect Effects 0.000 abstract description 12
- 238000005065 mining Methods 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000011435 rock Substances 0.000 description 27
- 229910000831 Steel Inorganic materials 0.000 description 14
- 239000010959 steel Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 230000005641 tunneling Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 241001270131 Agaricus moelleri Species 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000002969 egg yolk Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010454 slate Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/18—Methods of underground mining; Layouts therefor for brown or hard coal
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- Structural Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses comprehensive extracting and caving face tunnels along floor strata arrangement and support pattern, belong to coal mining technology field, including U-shaped capplce, U-shaped canopy leg, anchor cable, anchor cable beam, rope leg anchor pole and rope leg beam, the both ends of U-shaped capplce are fixed on U-shaped canopy leg, multiple anchor cables are arranged in the top of U-shaped capplce, one end of anchor cable is fixed on U-shaped capplce by anchor cable beam, the other end runs through seat earth and roof, it is coal seam between seat earth and roof, the top of U-shaped capplce is in contact with the lower part of seat earth, setting lock leg anchor pole on the U-shaped canopy leg of U-shaped capplce two sides, the one end for locking leg anchor pole is fixed on U-shaped canopy leg by locking leg beam, the other end is fixed in the wall in tunnel.This support pattern is suitable for special thick pole weak seam mining exploitation roadway workface arrangement and support pattern, and driving speed is fast, and supporting effect is good, high safety and reliability, effective guarantee safety and high efficiency.
Description
Technical field
The present invention relates to coal mining comprehensive extracting and caving faces, specifically, the present invention relates to a kind of minings
Roadway workface is arranged along floor strata and support pattern.
Background technique
Coal Mine coal seam geological condition is extremely complicated, wherein opening using main mining coal seam coal as the extremely soft super high seam of representative
Excavating technology is based on mining technique, 8 ~ 15m of coal seam thickness, hardness factor f≤0.3.This kind of coal seam feature is special thick, pole
Soft, top coal control difficulty is big when full coal tunnels, and driving is single into low efficiency.According to the currently used mode of process requirement roadway layout
It is to be arranged in full coal the bottom of along, using U-shaped steel canopy supporting, under the high-ground stress environment of underground, driving and supporting ten in coal seam
Divide difficulty, and seriously restricts fully mechanized coal face safety and high efficiency.
The Major Difficulties and drawback of the prior art are:
1, top plate is difficult to control, and since coal seam is special thick soft, easily emits leakage, and when tunnelling can only take partial circulating, hut shelves
U-shaped steel canopy support form is set up, and the fore-supports measure such as must take water filling, beat wedge, roof safety threat is greatly.
2, supporting is very difficult, since the soft suspension roof support in coal seam is difficult to pore-forming, can anchor it is very poor, and wall rock loosening ring is big,
This passive protecting mode of semicircular arch U-shaped steel canopy is taken, supporting effect is poor, and roadway deformation amount is big, repairs, is reprocessed again toward after digging forward
It repairs.
3, driving progress is slow, and since yolk coal top control difficulty is big, shed shoring labor intensity is high, and driving progress is slow,
Cause " that adopts is fast, pick slow ", digging is uneven, influences to produce normal continuance.
4, unfavorable high winning technology, is on the one hand U-shaped steel canopy maintenance, and when two lane Advanced management of fully mechanized coal face, heavy workload is used
Work is more, large labor intensity, simultaneously because semicircular arch U-shaped steel canopy section, is unfavorable for fully mechanized mining advance timbering application, is unfavorable for fully mechanized coal face
Two lane equipment standard configurations, restrict safe and efficient back production.
5, the increase of disaster degree is controlled, the digging laneway in full coal, generation side fall roof probability is big, is not only roof safety threat
Greatly, and easily the hidden danger such as gas exceeding limit and roof fall area spontaneous combustion occur.As upgrading development and high seam safety are equipped in fully mechanized mining
High-efficiency mining needs, it would be highly desirable to crack driving and supporting problem under comprehensive extracting and caving face coal top.
Summary of the invention
Technical problem to be solved by the invention is to provide one kind to be suitable for special thick pole weak seam mining exploitation
Roadway workface arrangement and support pattern, driving speed is fast, and supporting effect is good, high safety and reliability, and effective guarantee is safe and efficient
Exploitation.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that: comprehensive extracting and caving face tunnel edge
Floor strata arrangement and support pattern, including U-shaped capplce, U-shaped canopy leg, anchor cable, anchor cable beam, rope leg anchor pole and rope leg beam, the U
The both ends of type capplce are fixed on U-shaped canopy leg, and multiple anchor cables are arranged in the top of U-shaped capplce, and one end of anchor cable is solid by anchor cable beam
It is scheduled on U-shaped capplce, the other end runs through seat earth and roof, is coal seam, U-shaped canopy between seat earth and roof
The top of beam is in contact with the lower part of seat earth, setting lock leg anchor pole, the lock on the U-shaped canopy leg of the U-shaped capplce two sides
One end of leg anchor pole is fixed on U-shaped canopy leg by locking leg beam, and the other end is fixed in the wall in tunnel.
Preferably, the angle of the U-shaped canopy leg and horizontal plane is 78 ° to 79 °.
A kind of embodiment is that comprehensive extracting and caving face tunnel is arranged along floor strata and support pattern, including U-shaped canopy
Beam, U-shaped canopy leg, anchor cable, anchor cable beam, rope leg anchor pole and rope leg beam, the both ends of the U-shaped capplce are fixed on U-shaped canopy leg, U-shaped
Multiple anchor cables are arranged in the top of capplce, and one end of anchor cable is fixed on U-shaped capplce by anchor cable beam, and the other end runs through seat earth
And roof, it is coal seam between seat earth and roof, protrudes at the top of U-shaped capplce inside coal seam and connect with coal seam
It touches, one end of setting lock leg anchor pole on the U-shaped canopy leg of the U-shaped capplce two sides, the lock leg anchor pole is fixed on U by locking leg beam
On type canopy leg, the other end is fixed in the wall in tunnel.
A kind of embodiment is that comprehensive extracting and caving face tunnel is arranged along floor strata and support pattern, including U-shaped canopy
Beam, U-shaped canopy leg, anchor cable, anchor cable beam, rope leg anchor pole and rope leg beam, the both ends of the U-shaped capplce are fixed on U-shaped canopy leg, U-shaped
Multiple anchor cables are arranged in the top of capplce, and one end of anchor cable is fixed on U-shaped capplce by anchor cable beam, and the other end runs through seat earth
And roof, it is coal seam between seat earth and roof, is spaced a spacing between the top and seat earth of U-shaped capplce
From one end of setting lock leg anchor pole on the U-shaped canopy leg of the U-shaped capplce two sides, the lock leg anchor pole is fixed on U by locking leg beam
On type canopy leg, the other end is fixed in the wall in tunnel.
Using technical solution of the present invention, can obtain it is below the utility model has the advantages that
(1) tunnel layer bit optimization, realizes roof safety.Roadway layout is avoided and is constructed in the weak seam of pole in rock stratum,
The side fall roof phenomenon frequently occurred, is conducive to Safety Control of Roof, while avoiding because of coal seam side fall roof, causes gas big
Amount, which is gushed out, waits disaster threats.
(2) support process improves, and realizes stable supporting.It is strong that the supporting of U-shaped steel canopy is improved using anchor cable beam and lock leg anchor pole
Degree, solves that dead-soft soft seam relaxation zone is big, and pressure manifestation is strong, the easily-deformable problem of bracket, while making full use of rock
Stability and self-bearing ability improve supporting effect.
(3) form of fracture optimizes, and equips standard configuration for fully mechanized coal face and high winning technology creates conditions.Drift section can fit well
It answers the new equipments such as comprehensive extracting and caving face advance timbering, face end support to install, simplifies two lane Advanced management processes, alleviate duty
Work labor intensity, works at the same time that face fltting speed is fast, and back production is high-efficient, and per unit area yield is promoted obvious, realizes safe and efficient back production.
(4) piercing technique simplifies, and improves single into efficiency.Original is tunneled under the weak seam coal top of pole to apply using big gun tunneling process
Work after layer bit optimization, is constructed using comprehensive tunneling process, simultaneously because side fall roof phenomenon is reduced, no longer frequently using artificial advanced
Wedge gib is played, advance of working cycle improves 1 times, and list improves 30% or more into efficiency.
Detailed description of the invention
Brief description is made to content expressed by each attached drawing of this specification and the label in figure below:
Fig. 1 is that support coal top total rock arranges drift section figure；
Fig. 2 is that support coal top total rock arranges tunnel across pitch sectional view；
Fig. 3 is that support half coal petrography of coal top arranges drift section figure；
Fig. 4 is that support half coal petrography of coal top arranges tunnel across pitch sectional view；
Fig. 5 is that column total rock is stayed to arrange drift section figure；
Fig. 6 is that column total rock is stayed to arrange tunnel across pitch sectional view；
Label in above-mentioned figure is equal are as follows: 1, coal seam；2, seat earth；3, roof；4, U-shaped capplce；5, U-shaped canopy leg；6, anchor
Rope；7, anchor cable beam；8, leg anchor pole is locked；9, leg beam is locked.
Specific embodiment
Below against attached drawing, by the description of the embodiment, to for example related each structure of a specific embodiment of the invention
The works such as the shape of part, construction, the mutual alignment between each section and connection relationship, the effect of each section and working principle are further
Detailed description.
It as shown in Figure 1, 2, is support coal top total rock arrangement, i.e., tunnel is constructed in 2 rock stratum of seat earth, and back is shown in
Coal, the construction of support coal top, U-shaped 4 top of capplce are in contact with seat earth 2, are fixed on coal by more anchor cables 6 at the top of U-shaped capplce 4
On layer, U-shaped canopy leg 5 is fixed on the rock on tunnel side by locking leg anchor pole 8, and roadway's sides and boring head end face are rock
Stone is conducive to anti-wall caving and because of roof fall caused by wall caving, simultaneously because wall rock loosening ring is small in rock stratum, is conducive to stablize branch
The angle of shield, U-shaped canopy leg 5 and horizontal plane is 78 ° to 79 °.
As shown in Figure 3,4, it is support half coal petrography of coal top arrangement, i.e., is located at drift section internal upper part 1/3 ~ 1/ at the top of U-shaped capplce 4
2 in coal seam, and lower half is fixed on coal seam at the top of U-shaped capplce 4 by more anchor cables 6, U-shaped canopy in seat earth rock stratum
Leg 5 is fixed on the rock on tunnel side by locking leg anchor pole 8, and this arrangement favorably lacks broken rock stone, especially breaks bottom plate less
Hard rock, advantageous speedy drivage, simultaneously because top support coal is less, coal wall height is small, is not susceptible to wall caving, and due to lane side rock
Be conducive to anti-survey pressure supporting, reduce U-shaped steel canopy two and help the amount of shifting near.
As shown in Figure 5,6, it is located at roadway full-fracture-surfacanchoring-rod to stay rock pillar total rock to arrange, i.e., at the top of U-shaped capplce 4 and is arranged in coal seam bottom
In slate layer, top plate stays the rock pillar of 1m or so, is fixed on coal seam at the top of U-shaped capplce 4 by more anchor cables 6, U-shaped canopy leg 5 is logical
It crosses lock leg anchor pole 8 to be fixed on the rock on tunnel side, prevents the pumping of weak seam top plate from emitting, reduce advanced wedge workload, have
Using roof control, roof fall phenomenon is reduced, this mode is applicable in non-protruding coal seam.
1, tunnel is tunneled by design level position:
Using comprehensive tunneling process, advance of working cycle 1.2m ~ 1.4m.The specific layer position in tunnel is selected according to coal seam conditions, seat earth is with mud
Based on rock, thickness is more than 3m, is constructed using total rock, only in bracket back with coal；2 mud stone of seat earth is relatively thin, with hard sand
Based on, it is constructed using half coal petrography, reduces broken hard rock thickness, while controlling coal wall height, to reduce wall caving leakage top phenomenon；It is non-prominent
Total rock construction, while the rock stratum roof plate for staying 1m or so can be used in coal output layer, reduces advanced wedge shield top workload, prevents soft
Roof emits leakage.
2, design parameter supporting is pressed in tunnel:
Size is pressed in base area, is selected Telescopic U-shaped steel canopy model and rack form, is generallyd use 29U or 36U, be typically chosen flat
Ceiling beam, trapezoid support section, press is biggish, and micro- shape (basket handle arch) arched shed may be selected；Top beam across pitch arranges that 2-3 arranges anchor cable
Beam, two valance legs respectively add one of anchor pole lock leg.Concrete mode and parameter are as follows:
(1) collapsible timbering installs: flat-top U-shaped steel bracket be three section canopies, U-shaped steel lap-joint is fixed with limiting card cable, canopy away from
600mm, installed between canopy and canopy 4 metal pull bars (top 2,2 help it is each 1), top plate use dual anti-net+iron backboard back,
Portion, side uses rhombus net+iron backboard back.
(2) anchor cable beam is constructed: anchor cable beam arranges 2 row's anchor cable beams in roof symmetric by laneway midline, and press is larger to arrange 3
Row, Suo Liang use 29U section steel beam, and the hole of φ 20 is opened in centre, and every Suo Liang locks 2 canopy U-shaped steel canopies.
(3) lane side anchor pole locks leg: anchor pole specification is 22 × 3000mm of φ, spacing 1200mm；Roadway's sides are respectively arranged 1 row
Leg beam is locked, beam is U-shaped steel beam, and every root long degree 1000mm, the hole of φ 24, every lock bridge 2 canopy U-shaped steel canopy legs of lock are opened in centre.
The present invention is exemplarily described above in conjunction with attached drawing, it is clear that the present invention implements not by aforesaid way
Limitation, as long as the improvement for the various unsubstantialities that the inventive concept and technical scheme of the present invention carry out is used, or without changing
It is within the scope of the present invention into the conception and technical scheme of the invention are directly applied to other occasions.
Claims (4)
1. comprehensive extracting and caving face tunnel is arranged along floor strata and support pattern, it is characterised in that: including U-shaped capplce, U-shaped
Canopy leg, anchor cable, anchor cable beam, rope leg anchor pole and rope leg beam, the both ends of the U-shaped capplce are fixed on U-shaped canopy leg, U-shaped capplce
Multiple anchor cables are arranged in top, and one end of anchor cable is fixed on U-shaped capplce by anchor cable beam, and the other end runs through seat earth and coal seam
Top plate is coal seam between seat earth and roof, and the top of U-shaped capplce is in contact with the lower part of seat earth, described U-shaped
One end of setting lock leg anchor pole on the U-shaped canopy leg of capplce two sides, the lock leg anchor pole is fixed on U-shaped canopy leg by locking leg beam,
The other end is fixed in the wall in tunnel.
2. comprehensive extracting and caving face tunnel according to claim 1 is arranged along floor strata and support pattern, feature
Be: the angle of the U-shaped canopy leg and horizontal plane is 78 ° to 79 °.
3. comprehensive extracting and caving face tunnel is arranged along floor strata and support pattern, it is characterised in that: including U-shaped capplce, U-shaped
Canopy leg, anchor cable, anchor cable beam, rope leg anchor pole and rope leg beam, the both ends of the U-shaped capplce are fixed on U-shaped canopy leg, U-shaped capplce
Multiple anchor cables are arranged in top, and one end of anchor cable is fixed on U-shaped capplce by anchor cable beam, and the other end runs through seat earth and coal seam
Top plate is coal seam between seat earth and roof, and coal seam inside is protruded at the top of U-shaped capplce and is in contact with coal seam, the U
One end of setting lock leg anchor pole on the U-shaped canopy leg of type capplce two sides, the lock leg anchor pole is fixed on U-shaped canopy leg by locking leg beam
On, the other end is fixed in the wall in tunnel.
4. comprehensive extracting and caving face tunnel is arranged along floor strata and support pattern, it is characterised in that: including U-shaped capplce, U-shaped
Canopy leg, anchor cable, anchor cable beam, rope leg anchor pole and rope leg beam, the both ends of the U-shaped capplce are fixed on U-shaped canopy leg, U-shaped capplce
Multiple anchor cables are arranged in top, and one end of anchor cable is fixed on U-shaped capplce by anchor cable beam, and the other end runs through seat earth and coal seam
Top plate is coal seam, spaced apart between the top and seat earth of U-shaped capplce, institute between seat earth and roof
Setting lock leg anchor pole on the U-shaped canopy leg of U-shaped capplce two sides is stated, one end of the lock leg anchor pole is fixed on U-shaped canopy by locking leg beam
On leg, the other end is fixed in the wall in tunnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910098386.7A CN109630168A (en) | 2019-01-31 | 2019-01-31 | Comprehensive extracting and caving face tunnel is arranged along floor strata and support pattern |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910098386.7A CN109630168A (en) | 2019-01-31 | 2019-01-31 | Comprehensive extracting and caving face tunnel is arranged along floor strata and support pattern |
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| CN201910098386.7A Pending CN109630168A (en) | 2019-01-31 | 2019-01-31 | Comprehensive extracting and caving face tunnel is arranged along floor strata and support pattern |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130928A (en) * | 2019-06-28 | 2019-08-16 | 淮北矿业（集团）有限责任公司 | Integrated mole and technique under fully mechanized coal face coal top |
| CN111561333A (en) * | 2020-06-17 | 2020-08-21 | 山东东山矿业有限责任公司株柏煤矿 | Steeply inclined coal seam roof rock stratum supporting system |
| CN113187480A (en) * | 2021-05-13 | 2021-07-30 | 河南大有能源股份有限公司耿村煤矿 | Comprehensive protection method for coal mine rock burst |
| CN114483126A (en) * | 2021-12-31 | 2022-05-13 | 贵州大学 | Shed cable collaborative anchoring method and device for dynamic pressure half-coal-rock roadway asymmetric deformation control |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130928A (en) * | 2019-06-28 | 2019-08-16 | 淮北矿业（集团）有限责任公司 | Integrated mole and technique under fully mechanized coal face coal top |
| CN111561333A (en) * | 2020-06-17 | 2020-08-21 | 山东东山矿业有限责任公司株柏煤矿 | Steeply inclined coal seam roof rock stratum supporting system |
| CN111561333B (en) * | 2020-06-17 | 2021-09-17 | 山东东山矿业有限责任公司株柏煤矿 | Steeply inclined coal seam roof rock stratum supporting system |
| CN113187480A (en) * | 2021-05-13 | 2021-07-30 | 河南大有能源股份有限公司耿村煤矿 | Comprehensive protection method for coal mine rock burst |
| CN114483126A (en) * | 2021-12-31 | 2022-05-13 | 贵州大学 | Shed cable collaborative anchoring method and device for dynamic pressure half-coal-rock roadway asymmetric deformation control |
| CN114483126B (en) * | 2021-12-31 | 2022-12-09 | 贵州大学 | Shed cable collaborative anchoring method and device for dynamic pressure half-coal-rock roadway asymmetric deformation control |
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