CN102182477A - Mining method for mechanized mining working surface end and corresponding end support bracket - Google Patents
Mining method for mechanized mining working surface end and corresponding end support bracket Download PDFInfo
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- CN102182477A CN102182477A CN2011100868824A CN201110086882A CN102182477A CN 102182477 A CN102182477 A CN 102182477A CN 2011100868824 A CN2011100868824 A CN 2011100868824A CN 201110086882 A CN201110086882 A CN 201110086882A CN 102182477 A CN102182477 A CN 102182477A
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Abstract
The invention discloses a mining method for a mechanized mining working surface end and a corresponding end support bracket. The end support bracket comprises a base, a connecting rod, a covering beam, a top beam, a three-level side protecting board, a stand column and a side supporting plate; and the mining method for the mechanized mining working surface end comprises the process of fixing the height of a coal mining machine barrel, conducting coal mining at the end, supporting the end by the end support bracket so as to lead the side support plate of the end support bracket to be vertical to a mechanized mining working surface, and protecting the coal wall of the end laterally. By virtue of the end support bracket and the mining method for the mechanized mining working surface end, the operation difficulty of operators is alleviated, the phenomenon of mutual engagement between brackets is avoided, triangular coal is eliminated, and the recovery ratio of coal resources is improved.
Description
Technical field
The present invention relates to well worker colliery fully-mechanized mining technology, adopt hereinafter to be referred as combining, relate in particular to the production technique of thick and above coal seam fully-mechanized mining working in the well worker colliery, particularly, the present invention relates to a kind of fully-mechanized mining working faces end head coal-mining method and corresponding end support support thereof.
Background technology
The fully-mechanized mining working in thick and above coal seam in well worker colliery, mining height is generally all greater than the two ends height of tunnel, as shown in Figure 1, the schematic diagram of fully-mechanized mining working faces end head supporting and protection structure in the prior art wherein is shown in the mode of tunnel lateral cross section, for simplicity's sake, one end tunnel only is shown, and the other end is identical.As shown in the figure, the work plane mining height is H, and head-room is h, and face roof is labeled as 10, and base plate is labeled as 14, and the coal seam is labeled as 13.At present the coal-mining method that generally adopts is: the coal-winning machine (not shown) is by fully-mechanized mining working (a coal-winning machine wherein end is mined along direction shown in the arrow A) when 11 coal cuttings of tunnel, two ends, when distance tunnel 11 certain distances (deciding) according to the work plane mining height, coal mining machine roller begins to descend gradually, and the coal cutting height drops to h by H.The fully-mechanized mining working supporting carries out the transition to tunnel face end support 20 in the slow angle of transition bracket 21 (quantity is decided according to mining height) of step-down also by intermediate support 22 gradually through some supporting heights.
The shortcoming of this technology is:
1, formed the triangle coal of not adopting 12 between face roof 10 and back 15, this triangle coal 12 is dropped because of reclaiming, and the big more triangle coal 12 that abandons of mining height H will be many more.With 7 meters of mining heights, 300 meters of face lengths of work, tunnel is example for high 4 meters, and transition bracket need be arranged 9, and work plane triangle coal is lost the coal rate and reached 2.6%.
2, each transition bracket 21 bearing height does not wait, and stings the frame phenomenon easily each other, causes transition bracket 21 to damage.
3, owing to the existence of triangle coal 12, transition bracket 21 top top board injustice make transition bracket 21 unbalance stress, and the skew phenomenon easily takes place.
Summary of the invention
The object of the invention is to provide a kind of coal-mining method in the right angle transition of fully-mechanized mining working two ends, to eliminate the triangle coal, improves the rate of extraction of fully-mechanized mining working.
For this reason, the present invention at first provides a kind of end support support that is used for the fully-mechanized mining working faces end head supporting, comprising: base, connecting rod, caving shield, back timber, three-stage side protecting plate, column and sidepiece prop up backplate.Described base directly contacts with the fully-mechanized mining working base plate, and column is fixed on the base and supporting top beam, and caving shield and connecting rod are connected between back timber and the base.Back timber one end connects described caving shield, the other end connects described three-stage side protecting plate, sidepiece props up backplate and is fixed on the lateral edge of back timber perpendicular to described back timber plane earth, its width is less than the length of described back timber lateral edge, and its vertical height is poor more than or equal to fully-mechanized mining working mining height and head-room.
Preferably, described sidepiece prop up backplate at an upper portion thereof by be spirally connected, welding or articulated manner be fixed on the lateral edge of described back timber.
Preferably, the technical data of the width of described end support support, supporting height, three-stage side protecting plate is identical with the intermediate support that same fully-mechanized mining working uses.The technical data of the back timber of described end support support, caving shield and base is identical with conventional transition bracket.
The present invention also provides a kind of fully-mechanized mining working faces end head coal-mining method of utilizing described end support support, and it may further comprise the steps:
At first, utilize at fully-mechanized mining working middle part coal-winning machine along fully-mechanized mining working to the coal cutting of tunnel, two ends;
Then rocker arm of coal mining machine is fixed, made roller height constant, described height is mined highly identical with the fully-mechanized mining working middle part;
Then,, overlap with the nearly reinforcing wire in tunnel to the termination coal cutting along the fully-mechanized mining working middle part until centre of the drum;
At last, with described end support stent support in this termination, the back timber of the intermediate support that the back timber that makes described end support support and fully-mechanized mining working middle part are used flushes, and making the sidepiece of described end support support prop up backplate perpendicular to fully-mechanized mining working, the side direction retaining protects the rib between fully-mechanized mining working faces end head and the termination, tunnel.
Preferably, when described end support stent support during at this fully-mechanized mining working faces end head, described sidepiece props up backplate and overlaps with the nearly reinforcing wire in described tunnel.
By substitute the transition bracket of some routines with a frame end head support frame, the present invention can alleviate operative employee's operation easier, has avoided stinging the frame phenomenon between support mutually, thereby has reduced the support fault rate.And, by the fully-mechanized mining working faces end head coal-mining method among the present invention, can eliminate the triangle coal, improve the coal resources rate of extraction.
Description of drawings
Fig. 1 is the schematic diagram of work on hand face end support structure, for simplicity's sake, tunnel one end only is shown;
Fig. 2 is the lateral view of the end support support among the present invention;
Fig. 3 for simplicity's sake, only illustrates a side rocking arm and a cylinder of tunnel one end and coal-winning machine for the schematic diagram of the fully-mechanized mining working faces end head coal-mining method among the present invention;
Fig. 4 wherein, for simplicity's sake, only illustrates the back timber of termination support frame among the present invention and the lateral cross section that sidepiece props up backplate for the schematic diagram of end support rack arrangement one side in the termination among the present invention;
Fig. 5 is the structure reference diagram of the end support support among the present invention.
The specific embodiment
At first with reference to Fig. 2, Fig. 2 is the lateral view of the end support support among the present invention, and described end support support 1 comprises: base 2, connecting rod 3, caving shield 4, back timber 5, three-stage side protecting plate 6, column 7 and sidepiece prop up backplate 8.
In conjunction with Fig. 5, Fig. 5 is the structure reference diagram of the end support support among the present invention.Wherein, base 2 directly contacts with fully-mechanized mining working base plate 14, and transmission face roof pressure is to base plate and bear roof pressure, by column 7 supporting top beams 5.Described column 7 is mainly used in and bears fully-mechanized mining working top board load and regulate supporting height, is generally hydraulic cylinder.Described back timber 5 generally directly contacts with the top board 10 of fully-mechanized mining working as bearing the bracket component of balkstone load.Caving shield 4 and connecting rod 3 are connected between back timber 5 and the base 2; be used for the rear portion protection of fully-mechanized mining working on the one hand; stop the erecting dense individual props spoil; make it not pour in the work plane space; and the load of bearing the inbreak spoil; be used on the other hand in conjunction with column 7 fixing described back timbers 5, to bear the top board horizontal thrust.Described back timber 5 one ends connect caving shield 4, and the other end connects three-stage side protecting plate 6, and described three-stage side protecting plate 6 is used for the place ahead, supported face rib, and wherein said connected mode is hinged.
Described sidepiece prop up backplate 8 at an upper portion thereof can by be spirally connected, welding or mode such as hinged be perpendicular to the plane of described back timber 5, be fixed on the lateral edge of described back timber 5, its width is less than the length of described back timber lateral edge, and its vertical poor more than or equal to work plane mining height H and head-room h of height L.According to embodiments of the invention, sidepiece props up backplate 8 and is rectangle, be fixed on by the mode of being spirally connected on the lateral edge of described back timber 5, the uppermost edge that makes described sidepiece prop up backplate 8 does not exceed the upper surface of described back timber 5, preferably, sidepiece props up the uppermost edge surface of backplate 8 and the upper surface flush of back timber 5.When described end support support 1 was placed on the termination 17 of fully-mechanized mining working, its sidepiece propped up backplate 8 perpendicular to fully-mechanized mining working, and the side direction retaining protects the rib (as shown in Figure 4) between fully-mechanized mining working faces end head 17 and the termination, tunnel 16.
Below with reference to Fig. 3 the fully-mechanized mining working faces end head coal-mining method of utilizing the end support support among the present invention is described, it illustrates the schematic diagram of fully-mechanized mining working faces end head coal-mining method, for simplicity's sake, one side rocking arm and cylinder of tunnel one end and coal-winning machine only is shown, and described coal-mining method may further comprise the steps:
At first, adopt conventional coal-mining method, at fully-mechanized mining working middle part, utilize coal-winning machine along fully-mechanized mining working to the coal cutting of tunnel, two ends.According to embodiments of the invention, described coal-winning machine adopts drum shearer, and this coal-winning machine generally includes two cutting units, left and right sides tractive unit, control part and running part, and described cutting units mainly is made up of cylinder 31, rocking arm 30, motor etc.Usually, this type of coal-winning machine moves towards the tunnel, two ends from the fully-mechanized mining working middle part successively by running part, and along with the motion of coal-winning machine, the rocking arm 30 of coal-winning machine alternately swings up and down, and utilizes the pick coal cutting on the cylinder 31 that rotates.
In the time of near coal-winning machine runs to tunnel 11, coal mining machine roller rocking arm 30 is fixing, cylinder 31 is highly remained unchanged, described height is mined highly identical with the fully-mechanized mining working middle part, preferably, in the present embodiment, mining in the fully-mechanized mining working middle part highly is the height of face roof 10.Then, make this coal-winning machine from fully-mechanized mining working middle part to fully-mechanized mining working faces end head 17 coal cuttings, nearly reinforcing wire 18 overlaps until coal mining machine roller 31 centers and tunnel, so the nearly reinforcing wire of face roof 10 and tunnel 18 formation right angles, has eliminated the triangle coal.
Refer again to Fig. 4 below, Fig. 4 is arranged in the schematic diagram of fully-mechanized mining working faces end head one side for the end support support 1 among the present invention, and wherein, for simplicity's sake, only back timber 5 and the sidepiece that end support support 1 is shown with section form props up backplate 8.Fully-mechanized mining working faces end head coal-mining method of the present invention is further comprising the steps of, after the triangle coal 12 at fully-mechanized mining working faces end head 17 places declines, described end support support 1 is supported on this fully-mechanized mining working faces end head 17, the back timber of the used intermediate support 22 in its back timber 5 and fully-mechanized mining working middle part is flushed, in the present embodiment, back timber 5 is contacted with face roof 10, thereby its sidepiece props up backplate 8 perpendicular to fully-mechanized mining working, and the side direction retaining protects the rib between fully-mechanized mining working faces end head 17 and the termination, tunnel 16.Promptly when end support support 1 was supported on this fully-mechanized mining working faces end head 17, sidepiece propped up backplate 8 and overlaps with the nearly reinforcing wire 18 in described tunnel.Respectively arrange a frame end head support frame 1 symmetrically at the work plane two ends, the fully-mechanized mining working between the end support support 1 at two ends is then by intermediate support 22 supportings of routine.
According to embodiments of the invention, the width of end support support 1 (is meant when described end support support is used for end support, it is along the Breadth Maximum of work plane direction), technical datas such as the structure of supporting height, three-stage side protecting plate and supporting power are identical with the intermediate support 22 of the routine that same fully-mechanized mining working uses, and technical datas such as the structure of back timber, caving shield and base and appearance and size are identical with conventional transition bracket 21 (as shown in Figure 1), therefore, the end support support among the present invention comes down to a kind of improvement to existing support frame.
End support support among the present invention can substitute the transition bracket of some routines, has alleviated support operative employee's operation easier.Because the end support support among the present invention is identical with the intermediate support supporting height, so reduced the phenomenon of stinging frame between support mutually, has reduced the fault rate of support.Simultaneously,, can eliminate the triangle coal, improve the coal resources rate of extraction by fully-mechanized mining working faces end head coal-mining method provided by the invention.In addition and since coal-winning machine along the work plane coal cutting when the two ends, the cylinder coal cutting is highly constant, has eliminated because of the frequent operation of height change to roller height, has therefore alleviated coal-winning machine driver's operation easier.
Although the present invention is described by the mode of reference accompanying drawing with above-mentioned preferred embodiment, be appreciated that way of realization of the present invention is not limited to above-mentioned embodiment.Should be realized that in not deviating from claim of the present invention scope required for protection, those skilled in the art can make multiple different variation and adjustment to the present invention.
Claims (6)
1. end support support, described end support support is used for the fully-mechanized mining working faces end head supporting, it is characterized in that, described end support support comprises: base, connecting rod, caving shield, back timber, the three-stage side protecting plate, column and sidepiece prop up backplate, wherein, described base directly contacts with the fully-mechanized mining working base plate, described column is fixed on the described base and supporting top beam, described caving shield and connecting rod are connected between described back timber and the described base, described back timber one end connects described caving shield, the other end connects described three-stage side protecting plate, described sidepiece props up backplate and is fixed on the lateral edge of described back timber perpendicular to described back timber plane earth, described sidepiece props up the length of the width of backplate less than described back timber lateral edge, and vertical height that described sidepiece props up backplate is poor more than or equal to fully-mechanized mining working mining height and head-room.
2. end support support according to claim 1 is characterized in that, described sidepiece prop up backplate at an upper portion thereof by be spirally connected, welding or articulated manner be fixed on the lateral edge of described back timber.
3. end support support according to claim 1 is characterized in that, the technical data of the width of described end support support, supporting height, three-stage side protecting plate is identical with the intermediate support that same fully-mechanized mining working uses.
4. end support support according to claim 3 is characterized in that, the technical data of the back timber of described end support support, caving shield and base is identical with conventional transition bracket.
5. a fully-mechanized mining working faces end head coal-mining method of utilizing the described end support support of claim 1 is characterized in that, described fully-mechanized mining working faces end head coal-mining method comprises:
Utilize at fully-mechanized mining working middle part coal-winning machine along fully-mechanized mining working to the coal cutting of tunnel, two ends;
Rocker arm of coal mining machine is fixed, made roller height constant, described height is mined highly identical with the fully-mechanized mining working middle part;
, overlap with the nearly reinforcing wire in tunnel to the termination coal cutting along the fully-mechanized mining working middle part until centre of the drum;
With described end support stent support in this termination, the back timber of the intermediate support that the back timber that makes described end support support and fully-mechanized mining working middle part are used flushes, and making the sidepiece of described end support support prop up backplate perpendicular to fully-mechanized mining working, the side direction retaining protects the rib between fully-mechanized mining working faces end head and the termination, tunnel.
6. fully-mechanized mining working faces end head coal-mining method according to claim 5 is characterized in that, when described end support stent support during at this fully-mechanized mining working faces end head, described sidepiece props up backplate and overlaps with the nearly reinforcing wire in described tunnel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110086882 CN102182477B (en) | 2011-04-07 | 2011-04-07 | Mining method for mechanized mining working surface end and corresponding end support bracket |
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| CN 201110086882 CN102182477B (en) | 2011-04-07 | 2011-04-07 | Mining method for mechanized mining working surface end and corresponding end support bracket |
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| CN102182477B CN102182477B (en) | 2013-01-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111810147A (en) * | 2020-07-08 | 2020-10-23 | 神华神东煤炭集团有限责任公司 | Coal mining method of fully mechanized coal mining face with ultra-large mining height |
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| CN111810147A (en) * | 2020-07-08 | 2020-10-23 | 神华神东煤炭集团有限责任公司 | Coal mining method of fully mechanized coal mining face with ultra-large mining height |
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