CN1482344A - Fully-mechanized mining working plane supplementary laneway multiple passage quick-speed moving process - Google Patents
Fully-mechanized mining working plane supplementary laneway multiple passage quick-speed moving process Download PDFInfo
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Abstract
The invention discloses a fully-mechanized mining working plane supplementary laneway multiple passage quick-speed moving process which comprises, excavating two substantially parallel auxiliary channels spaced apart of a predetermined distance along the coal wall at the working surface mining stop line position, making at least one auxiliary channel to be the withdrawing channel of the working surface holder withdrawal, making at least another auxiliary channel to be the transportation channel of the working surface holder withdrawal, then excavating a plurality of connecting channels between at least two of the auxiliary channels, thus realizing the aim of quick-speed withdrawal.
Description
Technical field
The invention belongs to the mining technology, particularly a kind of comprehensive mechanical coal mining working plane supplementary laneway multiple passage quick-speed moving process.
Background technology
It is to combine the important production preparation adopt mine main that face is fallen in the removal of home of fully-mechanized mining working, and it is not only the important step that mine is realized safety in production, and is directly restricting the raising of fully-mechanized mining working unit yield.In China, the assistant conveyance mode of most mines is a rail transport, therefore, the transportation of fully-mechanized mining equipment also can only be adopted the mode of rail transport, work plane is installed generally and is adopted " the retrusive shield support is installed method ", utilizes winch, flat car, servicing units such as the tripod of unloading, iron plate are realized fully-mechanized mining equipment unloads, tuning and installation; Work plane returns to remove and generally adopts coal-winning machine to do back method between evacuating certainly, when near work plane is adopted principal vertical line, carrying out the cut of last a few cutter coals, realize that by the whole reach of coal-winning machine and transporter normal cut hydraulic support then keeps motionless, with form enough equipment tunings reach back evacuate between.The tradition removal of home is fallen face owing to be subjected to back to remove the restriction of factors such as mounting process, assistant conveyance mode, be difficult to realize face of removal of home fast, usually, return to remove and a fully-mechanized mining working is installed is needed about 35 days approximately, need to drop into 15000 man-hours, be difficult to ensure the above intensification production objective of the struggle of fully-mechanized mining working realization per unit area yield 8,000,000 t.
Because traditional fully-mechanized mining working returns to remove to be installed on the technology and do not make breakthroughs,, greatly restricted the raising of fully-mechanized mining working unit yield so be difficult to realize move fast face.Realize face of removal of home fast, there are many difficult points in traditional handicraft:
1) during, adopts at the fully-mechanized mining working end, not only need to lay wire rope and wire lath, and need to reserve between returning of fully-mechanized mining equipment evacuate, under the prerequisite that hydraulic support does not move, coal-winning machine and drag conveyor need whole reach to carry out falling, adorn, transporting of coal, and need to increase the outstanding support work that reveals the top board space, working link is many, progress is slow, the safety management difficulty is big, can't realize that the end adopts quick propelling;
2), carry out the shipping work of fully-mechanized mining equipment, the loading platform of equipment need be set because of the mode that adopts rail transport, equipment to remove, adorn, transport link many, height consuming time, auxiliary equipment and the supporting facility of use are many, poor stability can't be realized fast time removing;
3), traditional fully-mechanized mining working installs because of adopting backward rail transport mode, work plane is cut eye must lay a conveying track, while and install and reclaim track, the unloading of equipment, tuning, installation be equal difficulties comparatively also, link is many, and process is numerous and diverse, is difficult for realizing Fast Installation.
Summary of the invention
The present invention provides a kind of comprehensive mechanical coal mining working plane supplementary laneway multiple passage quick-speed moving process in order to overcome the difficult point of face of traditional fully-mechanized mining working removal of home, thereby can realize returning fast removes, safely and efficiently purpose.
According to fully-mechanized mining working plane supplementary laneway multiple passage quick-speed moving method of the present invention, may further comprise the steps: at first stop adopting line position, dig out at least two adits substantially parallel, separated by a distance along rib at stope; Making described at least one adit is the return channel that work plane is removed frame, and described another adit at least is the transport channel that support is withdrawn from; Between described at least two adits, excavate some connection roadways more then, fall the purpose of face thereby reach quick removal of home.
The effect of return channel is to adopt when stopping adopting line the tuning space in the time of need not cutting rack restoring specially before support when work plane; Can be because safeguarding this space returning of extension drag conveyor, coal-winning machine and hydraulic support not remove, can not worsen the roof control condition, thereby reach the purpose that shortens moving time because of the slowing down of face propulsion speed yet.
Take bolting with wire mesh with the return channel that stope connects.Return channel also is equipped with hydraulic prop, mining i beam, hydraulic support.
Hydraulic support is a brettis, vertically props up to be located in the return channel.The transport channel and the connection roadway that return removing supporters all adopt concrete to solidify base plate.
Transport channel adopts bolt support, and connection roadway adopts anchor pole and single-layer metal net combined supporting.
The beneficial effect that the present invention had is very tangible.
Take the measure in the auxilliary lane of pre-pick, make full use of the advantage of mining area continuous miner speedy drivage, with ' pick ' generation ' adopting ', be pre-formed force piece and returned the tuning passage of removing, thereby exempted stope for forming the tuning space of removing frame, the operation and the needed time of the cutting rib of controlling oneself; Superpower supporting this passage has improved the correlation that force piece returns support and country rock when removing, and helps returning of support and removes operation.
The formation of ' multichannel ', the superiority of the bull operation that the coal in China industry is formed for many years at the individual prop work plane, segmentation caving management top board is applied at fully-mechanized mining working; And passage connection roadway length has only 10-20 rice, as the emergency exit of work plane, has created the sense of security of being convenient to withdraw to the operating personnel, helps increasing work efficiency.The bull operation is apparent especially for improving the frame speed of removing, shorten the condition of removing the creation of frame time.The realization of segmentation caving has improved the stress relation of face roof and support, more to the later stage, may form the situation that support is removed for good more time.
The employing of auxilliary fortune multichannel new technology, the speed of face has reached advanced international standard to make the mining area move.Its main effect is:
1. technology is simple, and is easy to operate.
2. escape way is many, and it is short to keep away the calamity route, thereby has increased worker's the sense of security.
3. face roof is easy to management, time removing supporters bull parallel operations have been realized, the segmentation caving, thereby the generation of work plane concentrated stress and the intensity that manifests have been reduced to greatest extent, make the remaining support of work plane avoid tangible concentrated stress, improved the load situation of support, for the face of moving has fast been created very good working environment.
4. owing to excavate return channel before the work plane frame in advance, and hang the high strength net, thereby shortened the time of removing before the frame.
Description of drawings
Fig. 1 is the multichannel design drawing in auxilliary lane of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment of the present invention is described further.
In Fig. 1, Reference numeral 9 expression fully-mechanized mining workings, Reference numeral 4,5,6 represent that respectively substantially parallel return air Da Xiang, glue transports big lane and the big lane of auxilliary fortune.Air return way 7 and haulage gate 8 are basically perpendicular to the big lane 4 of return air, glue is transported big lane 5 and the big lane 6 of auxilliary fortune.
According to the present invention, stop adopting line at stope and excavate two adits 1 that are parallel to stope in advance, 2, then according to the geological conditions in coal seam, the technical equipment of removal of home, situations such as personnel's configuration excavate some connection roadways 3 between two auxilliary lanes, just constituted ' auxilliary lane multichannel ' system.Concrete mode can be tunneled a wide support of 3m along rib and be turned to return channel 1; Be parallel to former work plane simultaneously, excavate an adit at a distance of 10m, the transport channel of withdrawing from as support 2.Separated by a distancely then excavate nine connection roadways 3 between Liang Xiang, work plane just forms the advantage of can bull returning removing supporters respectively.
Auxilliary lane section: clear span 4.5-5.0m, clear height 3.6-3.8m; Support pattern:, take bolt support as the transport channel 2 of assistant conveyance; Return channel 1 with stope connects except that taking bolting with wire mesh, is equipped with hydraulic prop, mining i beam beam, hydraulic support etc., according to the next supporting use of the actual conditions of top board.Hydraulic support is the special-purpose brettis of mining area design, vertically is located in the return channel 1, strengthens the supporting to top board on the one hand, returns ' shielding ' support when removing as scaffold working face on the one hand.Taking to strengthen the purpose of supporting here, is not supporting for supporting, but in order more to help back removing the special measure that working surface hydraulic support is taked, " propping up " is " to return " for more successfully.
Supporting parameter: net: 40*40mm, the braiding of 8# iron wire;
Anchor pole: 1.8m * 1.6mm
I iron: 11#;
Individual prop: 3.6-3.8m;
Brettis: DZ4500-2.2/3.9
The predominant use in tunnel: stopping adopting the auxilliary lane of article one of line by work plane, is to return tuning passage when removing as the stope hydraulic support, work plane therewith the tunnel adopt logical, referred to herein as return channel 1; Auxilliary lane, the outside is the transport channel 2 when withdrawing from as working surface hydraulic support; 3 of connection roadways between the two auxilliary lanes become work plane and take the bull operation, the emergency exit of segmentation caving.
So-called return channel 1, be meant that fully-mechanized mining working stops adopting after, for guaranteeing working face equipment safety, returning and remove between returning of reserving in advance evacuate smoothly.It mainly acts on is to guarantee to have when removing working surface hydraulic support and coal-winning machine between enough returning evacuate returning.Return the mode of taking to hang the top net between evacuating, the balkstone stifled support that buries of work plane that bleeds during in order to anti-non-return removing supporters, normal the returning of influence removed operation.
The design rule Yu of return channel 1 is generally 3.6m * 5.0m, requires the clear height of return channel after laying the concrete base plate and installing steel I-beam to reach 3.6m.The used hydraulic prop of supporting passage has two kinds of 3.8m and 3.5m usually.Rationally whether the general thick concrete base plate of 200mm of laying of return channel 1, the selection of return channel 1 support density and supporting intensity are directly connected to back safety, speed and the material consumption of the work of removing.The return channel top board adopts bolting with wire mesh, it is the diamond mesh of 40 * 40mm that wire lath adopts mesh, the braiding of 8# iron wire, adopt logical side near work plane and adopt the Double-level Reticulated supporting, the wrong stubble of wire lath 200mm overlap joint, the junction button spacing must not surpass 200mm, and every button must not be less than 3 circles, and array pitch is 1 meter between anchor pole.Wire lath uses the supporting of 11# steel I-beam down, the steel I-beam spacing is 0.865m, steel I-beam adopts the mode of brettis and hydraulic prop combined supporting down, 40 hydraulic chocks have been installed altogether under the steel I-beam of work plane middle part, there is the steel I-beam of brettis to adopt a beam three post supportings down, do not have the steel I-beam of brettis to adopt a beam four post supportings down.
The safety guarantee of return channel then is to realize the key of above-mentioned target.With regard to return channel, passage tunnels in the entity coal, and its roof movement rule is compared as broad as long with common coal road, after natural arch forms, just is in stable state.But when stope near return channel and even adopt when logical, stress will change, the leading stress of stope will inevitably carry out stack repeatedly with the natural arch in tunnel, and where the peak value of stress is, and this just becomes the internal factor that determines back to remove Roadway Safety.From theory analysis, because the bolting with wire mesh in tunnel had both guaranteed that the country rock in the relaxation zone can not collapse, also limited the formation intensity of natural arch, the redistributing of tunnel stress is prior to the existence of the leading stress of stope; From the limit, in the natural arch scope, the inner primary physical property of country rock changes, stress is redistributed on the one hand, and country rock forms special physical property, has lost the ability that stress transmits continuously, therefore, the transmission of stope horizontal stress also will " so far ".On the other hand, the leading stress of stope is along with the continuation of work plane advances, more and more nearer with " return channel " spacing distance of pre-pick, the pressure of coal column manifests also therebetween can constantly increase, sheet nation and even cut the top phenomenon and all may take place, but when work plane and return channel adopt logical after, the direction of supercoated stress then can change to some extent, peak value or in the overlying rock of tunnel natural equilibrium, transmit, or the arch naturally of crossing over the tunnel is delivered to the place ahead, at this moment, return and remove the tunnel and then be in " exempting from nip " on a kind of new meaning.
From use, arrange that two transport channels 2 can reduce back shunting the time of the process of removing, help returning fast removing; Arrange that a transport channel 2 then can reduce disposable input (can save about 200,000 yuan approximately), time is relatively slightly long though shunt, but still can guarantee the normal transport of bracket carrier by the construction chamber of shunting, be a kind of roadway arrangement method that is worthy to be popularized.
At present, the applicant all adopts state-of-the-art in the world at present railless free-wheeled vehicle means of transportation in the assistant conveyance of each mine main in refreshing east, take railless free-wheeled vehicle, support is adorned, transports, unloaded and be integrated in one, just might straight entrucking transport outward for three pack supports, saved other operation over against contact entrance to a lane (passage).And, all the concrete sclerosis has all been realized on the road surface of transportation route, by digging return channel in advance in advance, strengthen the passage supporting quality, pre-pick is visited the lane and is guaranteed that safety connects, utilize means such as high-power bracket carrier and MPV (Multi-Purpose Vehicle) shipment fully-mechanized mining equipment, realized that unprecedented quick removal of home falls face, the a complete set of fully-mechanized mining equipment of ton surplus in the of 6000, adopting to lead to back to remove the whole installation in position of new work plane and reach the trial production condition from old work plane only needed less than 10 day time, elm man beam colliery 45101 fully-mechanized mining workings return to remove with the installation of 45102 fully-mechanized mining workings has only used 6 days 23 hours, has established sturdy basis for combining the quick growth of adopting production.The successful experience of its face of moving fast, become the guide to action that instructs the mining area to realize " the fully-mechanized mining working removal of home does not stop production, the not underproduction " this objective of the struggle, the model of worth reference also is provided for the construction of coal in China industry high-yield and high-efficiency mine simultaneously.
More than at specific embodiment the present invention has been described.But those skilled in the art should be appreciated that, in the spirit and scope of the invention, can carry out many kinds variations and modification.
Claims (6)
1. fully-mechanized mining working plane supplementary laneway multiple passage quick-speed moving method may further comprise the steps:
(1) at first stops adopting line position, dig out at least two adits substantially parallel, separated by a distance (1,2) along rib at stope;
(2) making described at least one adit is the return channel (1) that work plane is removed frame, and described another adit at least is the transport channel (2) that support is withdrawn from;
(3) between described two adits, excavate some connection roadways (3) then at least again, thus the face of moving down fast.
2. in accordance with the method for claim 1, it is characterized in that, take bolting with wire mesh with the return channel (1) that stope connects.
3. in accordance with the method for claim 2, it is characterized in that return channel (1) also is equipped with hydraulic prop, mining i beam, hydraulic support.
4. in accordance with the method for claim 3, it is characterized in that hydraulic support is a brettis, vertical is located in the return channel (1).
5. in accordance with the method for claim 1, it is characterized in that the transport channel (2) and the connection roadway (3) that return removing supporters all adopt concrete to solidify base plate.
6. in accordance with the method for claim 1, it is characterized in that transport channel (2) adopts bolt support, connection roadway (3) adopts anchor pole and single-layer metal net combined supporting.
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| CN02129399.6A CN1268831C (en) | 2002-09-09 | 2002-09-09 | Fully-mechanized mining working plane supplementary laneway multiple passage quick-speed moving process |
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| CN1268831C CN1268831C (en) | 2006-08-09 |
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| CN102373953A (en) * | 2011-10-24 | 2012-03-14 | 山西晋城无烟煤矿业集团有限责任公司 | Construction-bypass moving technique of fully-mechanized coal face |
| CN102383808A (en) * | 2011-10-24 | 2012-03-21 | 山西晋城无烟煤矿业集团有限责任公司 | Optimized laneway arrangement structure for high gas mining work surface |
| CN103939135A (en) * | 2014-05-07 | 2014-07-23 | 中国矿业大学 | Rapid construction method for support dismantling channel of fully mechanized coal mining face |
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| CN102373953B (en) * | 2011-10-24 | 2014-02-26 | 山西晋城无烟煤矿业集团有限责任公司 | Construction-bypass moving technique of fully-mechanized coal face |
| CN102373953A (en) * | 2011-10-24 | 2012-03-14 | 山西晋城无烟煤矿业集团有限责任公司 | Construction-bypass moving technique of fully-mechanized coal face |
| CN103939135A (en) * | 2014-05-07 | 2014-07-23 | 中国矿业大学 | Rapid construction method for support dismantling channel of fully mechanized coal mining face |
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| CN110107297A (en) * | 2019-06-13 | 2019-08-09 | 中国神华能源股份有限公司 | It is layered fully mechanized mining Caving in Lower-slicing contracting face method |
| CN111734413A (en) * | 2020-06-24 | 2020-10-02 | 陈芳 | Method for rapidly recovering working face of inclined thick coal seam |
| CN113356850A (en) * | 2021-07-08 | 2021-09-07 | 内蒙古利民煤焦有限责任公司 | Method and system for pre-digging and withdrawing channel of fully mechanized mining face with large mining height |
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