CN102080541B - Bidirectional cutting method for continuous miner - Google Patents

Bidirectional cutting method for continuous miner Download PDF

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Publication number
CN102080541B
CN102080541B CN201010589312A CN201010589312A CN102080541B CN 102080541 B CN102080541 B CN 102080541B CN 201010589312 A CN201010589312 A CN 201010589312A CN 201010589312 A CN201010589312 A CN 201010589312A CN 102080541 B CN102080541 B CN 102080541B
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China
Prior art keywords
coal
cutting
cut
cutting units
utilize
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CN201010589312A
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Chinese (zh)
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CN102080541A (en
Inventor
周成军
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中国神华能源股份有限公司
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Publication of CN102080541A publication Critical patent/CN102080541A/en
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Abstract

The invention discloses a bidirectional cutting method, which comprises the following steps: lifting a cutting part; utilizing the cutting part to positively cut a coal bed on a top plate; utilizing the cutting part to positively cut the forward coal bed; utilizing the cutting part to positively cut the coal bed on a baseboard; utilizing the cutting part to reversely cut the coal bed on the baseboard; utilizing the cutting part to reversely cut the forward coal bed; utilizing the cutting part to reversely cut the coal bed on the top plate; utilizing a coal loading shovel board to load and transport the coal cut in the reversely cutting process; and utilizing the coal loading shovel board to load and transport the coal cut in the positively cutting process. By using the bidirectional cutting method provided by the invention, the phenomenon that a coal car cannot be coaled in the coaling period because a continuous miner is busy in undercutting and sweeping top is avoided, and meanwhile, the phenomena of the prior art that the coal car carrying capability is less than the cutting speed of the continuous miner and the coal transportation process is delayed caused by no coal can be coaled are avoided, thereby greatly giving fully play to the production capacity of the continuous miner.

Description

The two-way cutting process of continuous miner
Technical field
The present invention relates to the coal winning technology of continuous miner, relate in particular to the two-way cutting process of a kind of continuous miner.
Background technology
At present, the coal winning technology of continuous miner is top-down unidirectional cutting process.Concrete steps comprise: lifting cutting units (abbreviate as and rise cutter); Cut coal body (abbreviate as and sweep the top) along back, from the rib top; Adjust the cutting drum height then gradually, cut coal body (abbreviating feed, coal cutting as) from top to bottom; When cutting drum during near seat earth, keep the cutting drum height simultaneously the coal machine draw back slightly, cut ground coal, make roadway floor smooth (abbreviate as and undercut).And adorned surplus coal, like this, coal-winning machine just cuts the cutter coal that is over.Then, again the coal-winning machine cutting drum is adjusted to back and begins to cut off a cutter coal.
In the top-down unidirectional cut technological process of above-mentioned continuous miner, the technology that can produce coal fast is feed, coal cutting, and take the flow process time for rising cutter, sweeping and push up and undercut.Reason mainly is: the first, and the tunnel that continuous miner excavates must guarantee that at first base plate is smooth, has only base plate smooth, continuous miner could guarantee steadily and not swing of fuselage when advancing, thereby guarantees that the cutting units coal cutting is steady.Secondly, guarantee that top board is smooth, the tunnel of cutting out so just reaches requirement.The 3rd, continuous miner in the downward coal cutting process, because cutting units weight is very big, adds the suppressing action of hydraulic jack after feed is accomplished, and workmanship is easy to guarantee in the coal cutting process, so cutting speed is very fast.Undercut with to sweep the end then different, the driver need focus one's attention on and observe the position of cutting units, and undercut, sweep the top to prevent not enough or undercut or to sweep the top amount excessive and cause roof and floor uneven phenomenon.The 4th, to adopt the heading end dust very big owing to connect, and sight line is very poor, careless slightlyly tunnelling engineering quality problems will occur, so undercut and to sweep top work all very slow.
After continuous miner is accomplished feed and coal cutting technology; At this moment follow under the mostly several situation of the coal conveyor at continuous miner rear and all do not fill; When particularly tunneling in the girdle below thickness 2m; Continuous miner is after accomplishing a complete cut circulation, and coal conveyor is not still filled.At this moment coal conveyor need be waited for continuous miner after completion undercuts and sweeps end task, withdraws from just now after in the technology of carrying out feed next time and coal cutting, filling coal and transports coal to crushing engine.Then the reforwarding coal car need be waited for being allowed for access after the coal conveyor of having filled withdraws from fully and coaling.
In fact the unit interval coal cutting ability of continuous miner is transported coal speed in turn much larger than two coal conveyors, and the fortune coal ability of the driving ability of continuous miner and coal conveyor all is not fully exerted like this, has influenced production efficiency.
Therefore, be necessary to design a kind of new continuous coal-winning machine cutting process, to overcome above-mentioned defective.
Summary of the invention
To the defective of prior art, the purpose of this invention is to provide a kind of cutting process that can make full use of the continuous miner ability to work, enhance productivity.
Two-way cutting process provided by the invention comprises: a1. lifting cutting units; A2. utilize the coal seam of cutting units forward cutting top board; A3. utilize the coal seam in cutting units forward cutting the place ahead; A4. utilize the coal seam of cutting units forward cutting base plate; A5. utilize the coal seam of cutting units reverse cut base plate; A6. utilize the coal seam in cutting units reverse cut the place ahead; A7. utilize the coal seam of cutting units reverse cut top board; A8. utilize the coal that cuts in hard plate shipment step a5, step a6, the step a7 process; A9. utilize the coal that cuts in hard plate shipment step a2, step a3, the step a4 process.
Preferably, utilize the hard plate that coal is shipped on the truck.
Preferably, utilize the hard plate that coal is shipped on the continuous fortune coal measures system.
Preferably, in any one step in step a5, step a6, step a7, in the space of the coal loading that cuts down between cutting units and hard plate.
Preferably, the depth of cut in coal seam of utilizing cutting units reverse cut the place ahead is less than the depth of cut in the coal seam that utilizes cutting units forward cutting the place ahead.
Preferably, utilize many fortune coal trucies that coal is loaded and transported.
Preferably, in step a3, the depth of cut of cutting units is 0.5m-0.7m.
Preferably, in step a3, the depth of cut of cutting units is 0.6m.
With respect to prior art; Adopt two-way cutting process of the present invention; Overcome coal conveyor during coalingging, the phenomenon that continuous miner can not coal conveyor owing to be busy with undercuting, sweep the top be coaling, simultaneously; Avoid in the prior art on the one hand the coal conveyor transport power less than continuous miner coal cutting speed, the fortune coal occurs again because no coal is adorned the phenomenon of waiting on the other hand, thereby farthest given play to the production capacity of continuous miner.
In addition, adopt prior art to sweep the top and when undercuting, continuous miner moves forward and backward frequently; And employing the present invention; The continuous miner operating personnel carve the coal conveyor of looking after the rear when not required, have alleviated operating personnel's burden, make to sweep the top and the technology that undercuts can be accomplished in high quality.Therefore, the present invention has also improved tunnelling engineering quality when improving driving speed.
Description of drawings
Fig. 1 is a cutting process sketch map of the present invention.
The specific embodiment
Fig. 1 is a two-way cutting process sketch map of the present invention, shows the cutting process before loading, i.e. step a1-a7.As shown in the figure, said continuous miner comprises cutting units 201 and hard plate 202.Cutting units 201 is used to cut the coal seam, and hard plate 202 is used for haulage device is advanced in the coal loading that cuts down, the truck or transport coal equipment continuously of for example coalingging.
Two-way cutting process in a kind of specific embodiment of the present invention comprises the steps:
Step a1, the lifting cutting units.The purpose of lifting cutting units is to make cutting units arrive the top board of bank, so that the coal seam of top board is cut.
Step a2 utilizes the cutting units forward to cut the coal seam of top board.Depth of cut confirms that according to concrete equipment or engine request in one embodiment of the invention, the diameter of cylinder of cutting units is 915mm, and then the depth of cut of each cutter of cutting units is 0.5m-0.7m, 0.6m for example, and depth of cut is about 70% of diameter of cylinder.
Step a3 utilizes the cutting units forward to cut the coal seam in the place ahead.After having cut the coal seam of top board, begin the coal seam in the place ahead is cut.Said " the place ahead " is the direction that the continuous miner construction is advanced.Depth of cut confirms according to concrete equipment or engine request, for example, and can be identical for the depth of cut in coal seam, the place ahead with depth of cut to top board.When cutting coal seam, the place ahead, adjust the roller height of cutting units gradually, from top to down cutting coal body.
Step a4 utilizes the cutting units forward to cut the coal seam of base plate.After having cut the coal seam in the place ahead, begin the coal seam of base plate is cut.When the cylinder of cutting units during near seat earth, keep the roller height of cutting units, continuous miner is backed off simultaneously, has cut ground coal, makes roadway floor smooth.
---top board the place ahead---base plate the place ahead---the direction at base plate rear from the top down---of can knowing that from top description said " forward " is meant from the top board rear.
Then, at step a5, utilize the coal seam of cutting units reverse cut base plate.After the coal seam of base plate is cut.According to thought of the present invention, need make the cutting units counter motion, carry out cutting once more to the coal seam.That is, with cutting units horizontal sliding forward, the coal seam of cutting base plate once more.
Step a6 utilizes the coal seam in cutting units reverse cut the place ahead.Behind the coal seam of reverse cut base plate, cutting units has arrived the root in anterior coal seam once more, and at this moment, cutting units cuts the coal seam from bottom to top.Because the forward coal cutting is relatively easy among the step a3, so the forward coal cutting all is " a full cutter ", " full cutter " is the maximum depth of cut of continuous coal mining cutting units.And when the coal seam in reverse cut the place ahead, preferably, can adjust the coal cutting degree of depth, guaranteeing under the prerequisite that coal conveyor or continuous coal conveyer can be filled the depth of cut when as far as possible reducing upwards coal cutting, the speed when making progress coal cutting to improve cutting units.
Step a7 utilizes the coal seam of cutting units reverse cut top board.Behind the coal seam in reverse cut the place ahead, cutting units has arrived top board.At this moment, cut top seam once more along the past direction backward.
Be appreciated that in the cutting process of step a5-a7 the coal of cutting off is stored in the zone between cutting units and the hard plate.Because this moment, cutting units was upwards coal cutting, so the space becomes big between cutting units and the hard plate, it is big that storage coal ability also becomes thereupon, so even guaranteed under the situation that does not have coal conveyor to coaling in the wings, continuous miner still can continue coal cutting.
After finishing above-mentioned forward and reverse cut, the coal that cuts down needs transportation.Step a8 at first transports the coal loading that is stored in behind the reverse cut between cutting units and the hard plate.That is, with the coal shipment of cutting in step a5, step a6, the step a7 process.
Then, step a9 is with the coal shipment of cutting in step a2, step a3, the step a4 process.That is, the coal that cuts down behind the forward cut is transported.
Preferably, for fully guaranteeing production efficiency, can utilize many fortune coal trucies that coal is loaded and transported.For example; Continuous miner starts earlier the hard plate, and the coal of storing is shipped on the coal conveyor, waits to load and transport after part of coal makes that storage coal space is vacated; Driving said cutting units presses down; Descend to coal cutting, treat that cutting units accomplishes down when coal cutting technology, can be loaded on the follow-up coal conveyor and transport.
Describe through above-mentioned preferred embodiment although it will be understood by those skilled in the art that the present invention, its way of realization is not limited to above-mentioned embodiment.Should be realized that under the situation that does not break away from purport of the present invention those skilled in the art can make different variations and modification to the present invention.

Claims (8)

1. two-way cutting process of continuous miner, said continuous miner comprises cutting units and hard plate, it is characterized in that, said method comprises:
A1. lifting cutting units;
A2. utilize the coal seam of cutting units forward cutting top board;
A3. utilize the coal seam in cutting units forward cutting the place ahead;
A4. utilize the coal seam of cutting units forward cutting base plate;
A5. utilize the coal seam of cutting units reverse cut base plate;
A6. utilize the coal seam in cutting units reverse cut the place ahead;
A7. utilize the coal seam of cutting units reverse cut top board;
A8. utilize the coal that cuts in hard plate shipment step a5, step a6, the step a7 process;
A9. utilize the coal that cuts in hard plate shipment step a2, step a3, the step a4 process; Wherein, Forward is meant: from the top board rear, and------from the top down---base plate the place ahead---the direction at base plate rear, the place ahead are the directions that the continuous miner construction is advanced in top board the place ahead; Oppositely be with just in the opposite direction, the rear is meant the orientation opposite with the place ahead.
2. method according to claim 1 is characterized in that, utilizes the hard plate that coal is shipped on the truck.
3. method according to claim 1 is characterized in that, utilizes the hard plate that coal is shipped on the continuous fortune coal measures system.
4. according to any described method among the claim 1-3, it is characterized in that, in any one step in step a5, step a6, step a7, in the space of the coal loading that cuts down between cutting units and hard plate.
5. method according to claim 4 is characterized in that, the depth of cut in coal seam of utilizing cutting units reverse cut the place ahead is less than the depth of cut in the coal seam that utilizes cutting units forward cutting the place ahead.
6. method according to claim 2 is characterized in that, utilizes many fortune coal trucies that coal is loaded and transported.
7. method according to claim 1 is characterized in that, in step a3, the depth of cut of cutting units is 0.5m-0.7m.
8. method according to claim 1 is characterized in that, in step a3, the depth of cut of cutting units is 0.6m.
CN201010589312A 2010-12-08 2010-12-08 Bidirectional cutting method for continuous miner CN102080541B (en)

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Application Number Priority Date Filing Date Title
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CN102080541B true CN102080541B (en) 2012-09-19

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100567703C (en) * 2005-05-19 2009-12-09 兖矿集团有限公司 Comprehensive coal-mining process by using long wall mining method
CN1932240B (en) * 2006-09-21 2010-07-28 闫振东 Full-seam cutting, retreating, separate moving and full-caving comprehensive mechanized coal mining method
CN101457645B (en) * 2008-04-30 2011-06-01 天地科技股份有限公司 Thick coal seam stepwise full-seam coal mining method
CN101787889B (en) * 2010-03-18 2012-01-11 北京昊华能源股份有限公司 Comprehensive mechanized coal mining method through cantilever support

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