WO2009103304A1 - Verfahren zur gesteuerten einhaltung eines kappe-kohlenstoss-abstandes bei strebbetrieben - Google Patents
Verfahren zur gesteuerten einhaltung eines kappe-kohlenstoss-abstandes bei strebbetrieben Download PDFInfo
- Publication number
- WO2009103304A1 WO2009103304A1 PCT/EP2008/001263 EP2008001263W WO2009103304A1 WO 2009103304 A1 WO2009103304 A1 WO 2009103304A1 EP 2008001263 W EP2008001263 W EP 2008001263W WO 2009103304 A1 WO2009103304 A1 WO 2009103304A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shield
- inclination
- support frame
- shield support
- cap
- Prior art date
Links
- 238000005065 mining Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000003245 coal Substances 0.000 claims abstract description 19
- 238000000605 extraction Methods 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims abstract description 3
- 230000002349 favourable effect Effects 0.000 claims abstract description 3
- 230000015556 catabolic process Effects 0.000 claims description 9
- 238000006731 degradation reaction Methods 0.000 claims description 9
- 210000001503 joint Anatomy 0.000 claims description 2
- 101100064676 Mus musculus Edem1 gene Proteins 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 238000001514 detection method Methods 0.000 claims 1
- 239000011435 rock Substances 0.000 claims 1
- 206010019133 Hangover Diseases 0.000 description 7
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 230000000454 anti-cipatory effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000004826 seaming Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/24—Remote control specially adapted for machines for slitting or completely freeing the mineral
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
- E21D23/0034—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face comprising a goaf shield articulated to a base member
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/03—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor having protective means, e.g. shields, for preventing or impeding entry of loose material into the working space or support
Definitions
- the invention relates to a method for controlling a longwall conveyor, at least one mining machine and a hydraulic shield removal having longwall mining operations in underground coal mining.
- KaKo cap-coal-collision distance
- mining operations inevitably lead to slope areas without development support Extraction with a roller cutter the shield removal at the coal-thrust end of his hanging end cap such a distance from Coal thrust that a passing of the scraper blade without collision with the expansion is possible.
- the invention is therefore based on the object to provide a method of the type mentioned, by means of which the cap-coal joint distance (KaKo) is monitored during the advancement of the face front with a view to minimizing the danger of Ausbruch the hanging wall and is adjustable.
- KaKo cap-coal joint distance
- the invention provides in its basic idea that for the controlled compliance of a rock-mechanically favorable cap-coal joint distance by means of at least three of the four main components of each shielding structure as Bodenkufe, broken shield, support arms and fractured area of the Hangendkappe mounted inclination sensors, the slope of Hangendkappe and Bodenkufe in the dismantling direction determined and based on the measured data in a computer unit in case of changes in Slope angle of the hang-end cap the impact on the cap-to-butt joint distance will be determined and an automatic adjustment will be made of the parameters prevailing at screw-in, pull-out and set duty cycle of the shield support frame.
- the invention has the advantage that initially alone due to be determined with a comparatively low effort inclination angle of the individual shield expansion point in the degradation direction, it is possible to draw conclusions on the each adjusting cap carbonization distance, in which case in a particular case Affected shield expansion rack whose working cycle when walking or pulling by the computer unit in an automated process can be set so that each adjusts under the applicable conditions as optimal to be regarded cap-coal joint distance.
- the inclination of the individual shield expansion point is also determined by the inclination sensors transversely to the degradation direction and compared with the determined bank angle of adjacent shield expansion point and above a value set as permissible during the working cycle an alignment of the respective shield support frame in relation to its neighbor shield extension points takes place. This is to ensure that the individual adjacent shield extension point have no strong differences in their angular position to the longwall conveyor, so do not fall in an automatic process, the adjacent shield expansion point from their mutual association.
- the working cycle can be automatically adjusted or aborted when the shield-building frame moves, so that the position of the individual can be corrected Shielding rack is possible.
- unwanted misalignments of a shield extension lead to an increase in the KaKo, so that this measure also ensures the mastery of the desired lowest possible KaKo.
- the hanging end cap is adjusted during every working cycle of the shield support frame in such a way that the wall end cap falls off from its coal-body end to its fracture-end.
- This desired position of the shield support frame can also be favored according to an embodiment in that the tilt of the Bodenkufe is set so that an increase in the Bodenkufe to the longwall conveyor results in each working cycle of the shield support, because by a lightly rising in degradation direction runner on optionally on the footing forming heap is favored.
- This slipping can be due to the induced by the inclination sensors knowledge of the shield position by an am Shield expansion rack in a known manner established lifting device can be brought about specifically.
- the hanging end cap when determining a change occurring between two working cycles in the slope of the hanging wall in the direction of dismantling the next cycle, is set only with a slope that corresponds to the position of the hanging wall in a previous cycle , The same procedure also results if, after driving under the breakout, the rear, fracture-side end of the hang-end cap pivots into the breakout, which would result in a misalignment of the hang-end cap towards the conveyor. Even in such a case, the hanging end cap is to be set with the predetermined inclination.
- the height of the extension of the hanging wall-carrying stamp of the shielding expansion frame is detected and the respective altitude of the hanging wallet cap is taken into account for the individual working cycles for determining the required position of the hanging end cap.
- the automatic finishing work is made more difficult in those cases where the shield extension are equipped with a so-called Nachsetz horrung.
- This Nachsetz horrung automatically ensures a setting of the shield support frame f until the Hangendkappe against the hanging wall pushing stamp have reached a working pressure of, for example, 300 bar. In the presence of outbreaks or sagging Hangend Geben this means that the Nachsetz horrung automatically presses the hangover cap until a correspondingly fixed resistance has set.
- the setting process of the shield support frame is automatically terminated when the slope sensor tilt indicator indicates a misalignment of the hanging end cap compared to its position in a previous cycle. Furthermore, according to one exemplary embodiment of the invention, provision may be made for a follow-up control set up in the case of a shield support frame to be automatically deactivated for the subsequent work cycle and then reactivated for the subsequent work cycle.
- the position of the individual shield support frame relative to the longwall conveyor and guided on the longwall conveyor mining machine can be detected, according to an embodiment of the invention provides that the path of the pulling the Schildausbaugestells causing the longwall conveyor Schreitzylinder is detected by a Wegmessvorraum.
- an inclined sensor is arranged on the longwall conveyor and / or mining machine and the angle of inclination of the longwall conveyor and / or mining machine is determined in the direction of dismantling.
- the arrangement of an inclination sensor on the mining machine is sufficient.
- the extraction machine traveling on and guided on the longwall conveyor unit effectively forms a unit with the longwall conveyor, to improve the accuracy of the control, it may also be useful to detect the inclination of the longwall conveyor via a tilt sensor disposed thereon.
- the arrangement of a tilt sensor differs only on the longwall conveyor for the purpose of control.
- the difference angle between the footprints of longwall conveyor and shield support frame is determined. With this difference angle is expressed whether longwall conveyor and mining machine on the one hand and shielding scaffolding on the other hand move on a common plane in the degradation direction, or whether a relative position of longwall conveyor with mining machine and shielding structure to each other results due to a change in the seam.
- the differential angle is less than 180 degrees in the case of a throughput through the throughput, it would be sufficient to exploit the full travel distance of the shield mounting frame which is valid for normal operation Collision with the mining machine, so that it is provided according to an embodiment of the invention that at a detected differential angle of less than 180 degrees of the path of the shield support frame to the longwall conveyor during the work cycle is reduced such that a passage of the mining machine before the coal side cap tip of the hanging end cap is possible.
- the KaKo is undesirably increased due to the position of the longwall conveyor and mining machine and shield support frame, so that in this case the advance of longwall mining conveyor with the mining machine is reduced in order to limit the KaKo.
- the return path of the longwall conveyor to the coal thrust out at advanced Schreitausbaugestell and thus the cutting width of the extraction mesh is reduced such that the passage of the mining machine in comparison with the normal cutting width of the mining machine sets lower cap-to-chip distance.
- FIG. 1 is a schematic side view of a shield expansion frame with inclination sensors arranged thereon in conjunction with a longwall conveyor and a roller skid loader used as mining machine;
- FIG. 1 is a schematic side view of a shield expansion frame with inclination sensors arranged thereon in conjunction with a longwall conveyor and a roller skid loader used as mining machine;
- FIG. 2 shows the longwall equipment according to FIG. 1 in use in a schematic illustration
- FIG. 3 shows the longwall equipment according to FIG. 2 in the case of a hanging wall to be feared due to a mountain padding resting on the hanging wall
- FIG. 4 is a schematic representation of the desired position of a shield support frame for avoiding a mountain cushion which forms on the wall end cap;
- FIG. 5 shows a development situation according to FIG. 2 in the event of a hangover eruption
- FIG. 6 shows the development situation according to FIG. 5 when the hangover is interrupted
- FIG. 7 shows the construction situation according to FIGS. 5 and 6 in a subsequent work cycle
- FIG. 9 shows the longwall equipment according to FIG. 1 with a shield extension frame having an additional adjusting sliding cap
- Fig. 10 is a representation of the so-called LemniskatenEffs in a designed as Lemniskatenschild shield frame.
- the longwall equipment shown in Figure 1 initially comprises a shield support frame 10 with a Bodenkufe 1 1, on the two pistons 12 are attached in a parallel arrangement, of which in Figure 1, only a stamp is recognizable and carry at its upper end a hanging wall 13. While the Hangendkappe 13 protrudes at its front (left) end in the direction of the still to be described extraction machine, at the rear, right end of the Hangendkappe 13 a breaker plate 14 is articulated by means of a hinge 15, wherein the broken shield of two in side view on the Bodekufe 1 1 resting support arms 16 is supported.
- three inclination sensors 17 are attached to the shield support 10, namely a tilt sensor 17 on the bottom skid 11, an inclination sensor 17 in the rear of the hang end cap 13 near the joint 15, and a tilt sensor 17 on the fracture shield 14.
- the support arms 16, three inclination sensors must be installed by the four possible inclination sensors 17 in order to determine the position of the shield support frame in a working space with the inclination values determined therefrom to determine.
- the invention is not limited to the arrangement of the inclination sensors shown concretely in FIG. 1, but encompasses all possible combinations of three inclination sensors on the four movable components of the shield support frame.
- the shield support frame 10 shown in Figure 1 is struck on a longwall conveyor 20, which also has a tilt sensor 21, so that in terms of the control of the longwall equipment in general also here data can be obtained in terms of conveyor position.
- a recovery machine in the form of a Walzenschrämladers 22 is guided with an upper roller 23 and a lower roller 24, wherein a tilt sensor 25 is disposed in the region of the Walzenschrämladers 22, further, a sensor 26 for detecting the respective location of the Walzenschrämladers 22 in Strut and reed rods 27 for cutting height measurement.
- the use of the longwall equipment described in FIG. 1 in a long-distance operation is such that the longwall equipment is moved on the horizontal 3 1, with the rollers 23 and 24 of the drum cutter 22 capturing the coalburst 32.
- the hanging wall 30 is supported by the hangover cap 13 of each shield support frame 10, whereby with increasing Verhiebieb the hanging wall 30 falls as a break 40 after Streb trimgang. From Figure 2 results in each individual operating situation between the top of the coal-side Hangendkappe 13 and the coal thrust 32 existing KaKo (cap-coal-butt-distance), which is a measure of the free-standing and not under cherries area 34 of the hanging 30, this area 34 is basically considered to be outbreak risk.
- KaKo cap-coal-butt-distance
- the KaKo 33 then increases when a mountain pad 35 forms on the hanging end cap 13 of the shield support frame 10, which forms the support for the hanging wall 30.
- an embossment 36 in Area of the upper bank of the coal thrust 32 occurred, and it can be seen how without a fundamentally different position of the longwall equipment in comparison with Figure 2 results in a much larger KaKo 33, so that the outbreak-prone area 34 increases significantly.
- FIGS. 8a to 8c the passage through the container and saddle traversing leads to an undesired change in the KaKo.
- FIG. 8b the approaching of a trough (FIG. 8b) leads to a tilting position of longwall conveyor 20 and mining machine 22, via tilt sensors arranged on them
- the inclination values recorded here can be compared with the inclination values recorded on the shielding support frame 10, and this results in a difference angle which is based on the respective contact surface of the walking support frame 10 and the longwall mining conveyor 20
- the invention provides that in such a situation, the shield support frame 10 is not retraced by the full amount, but with respect to the longwall conveyor 20 with Recovery machine 22 is left behind something, so that the necessary technical reasons, distance or KaKo is maintained.
- the so-called "plug-in" i. To reduce the distance between the shield support frame 10 and the longwall conveyor 20, so that while the hangover cap 13 projects further in the direction of the coal thrust 32 and thereby the KaKo 33 is reduced. Since the "plug-in" is changeable during operation, depending on the deposit conditions, the automatic operation of the longwall equipment can be adjusted by the preference of the shield removal station 10 is driven so far that the technically necessary KaKo is met.
- shield expansion points 10 are also known which have an outlet sliding cap 41 in the region of their hanging end cap 13.
- the invention is also to be realized with such shield expansion points 10, and it is provided that in the Ausstellschiebekappe 41 also a tilt sensor 17 and a displacement sensor 42 are arranged so that the position of the Ausstellschiebekappe 41 in relation to Bodenkufe 1 1 in the automatic sequence control of the duty cycle of the shield support frame 10 can be considered.
- the requirements for mastering the cap-coal-butt distance in an automated operation of the shield extension can also be improved by the fact that constructive changes to the shield extension points can be carried out in over-day repair and maintenance. This also applies, in particular, to new designs of shielding outgoers, in which the requirements of the automated removal operation can be taken into account from the outset.
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Remote Sensing (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Control Of Conveyors (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08715852.3A EP2247826B1 (de) | 2008-02-19 | 2008-02-19 | Verfahren zur gesteuerten einhaltung eines kappe-kohlenstoss-abstandes bei strebbetrieben |
PL08715852T PL2247826T3 (pl) | 2008-02-19 | 2008-02-19 | Sposób sterowanego utrzymania odległości między stropnicą i przodkiem w wybieraniu ścianowym |
US12/918,476 US8567870B2 (en) | 2008-02-19 | 2008-02-19 | Method for the controlled maintaining of a distance between the top canopy and the coal face in longwall mining operations |
PCT/EP2008/001263 WO2009103304A1 (de) | 2008-02-19 | 2008-02-19 | Verfahren zur gesteuerten einhaltung eines kappe-kohlenstoss-abstandes bei strebbetrieben |
RU2010133869/03A RU2470156C2 (ru) | 2008-02-19 | 2008-02-19 | Способ контролируемого соблюдения зазора между верхним перекрытием и угольным забоем в очистных забоях |
CN200880127061.7A CN101952548B (zh) | 2008-02-19 | 2008-02-19 | 用于在长壁式开采作业中有控制地保持顶梁至采煤工作面的间距的方法 |
AU2008351273A AU2008351273B2 (en) | 2008-02-19 | 2008-02-19 | Method for the controlled maintaining of a distance between the roof and the face in longwall mining operations |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2008/001263 WO2009103304A1 (de) | 2008-02-19 | 2008-02-19 | Verfahren zur gesteuerten einhaltung eines kappe-kohlenstoss-abstandes bei strebbetrieben |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009103304A1 true WO2009103304A1 (de) | 2009-08-27 |
Family
ID=40158663
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2008/001263 WO2009103304A1 (de) | 2008-02-19 | 2008-02-19 | Verfahren zur gesteuerten einhaltung eines kappe-kohlenstoss-abstandes bei strebbetrieben |
Country Status (7)
Country | Link |
---|---|
US (1) | US8567870B2 (de) |
EP (1) | EP2247826B1 (de) |
CN (1) | CN101952548B (de) |
AU (1) | AU2008351273B2 (de) |
PL (1) | PL2247826T3 (de) |
RU (1) | RU2470156C2 (de) |
WO (1) | WO2009103304A1 (de) |
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WO2013083185A1 (de) * | 2011-12-06 | 2013-06-13 | Rag Aktiengesellschaft | Verfahren zur überwachung eines automatisierten bewegungsablaufes bei einem im untertägigen bergbau eingesetzten ausbauschild |
UA109514C2 (uk) * | 2012-04-02 | 2015-08-25 | Забійне обладнання з покладеними між забійним конвеєром і каркасами щитового кріплення шланговими нівелірами | |
US8985699B2 (en) | 2013-03-14 | 2015-03-24 | Seneca Industries Inc. | Mining methods and equipment |
GB2577796B (en) | 2013-08-29 | 2020-09-23 | Joy Global Underground Mining Llc | Detecting sump depth of a miner |
ZA201506069B (en) | 2014-08-28 | 2016-09-28 | Joy Mm Delaware Inc | Horizon monitoring for longwall system |
US9506343B2 (en) * | 2014-08-28 | 2016-11-29 | Joy Mm Delaware, Inc. | Pan pitch control in a longwall shearing system |
CN105484778B (zh) * | 2015-11-27 | 2017-10-20 | 太原科技大学 | 一种液压支架立柱节能回路及控制方法 |
CN106194229B (zh) * | 2016-08-30 | 2018-06-05 | 安徽理工大学 | 一种基于支架底板改进的支架定向移动结构和方法 |
CN106121701B (zh) * | 2016-08-30 | 2018-03-06 | 中国矿业大学(北京) | 一种超前支架底座的导向装置和使用方法 |
US10920588B2 (en) | 2017-06-02 | 2021-02-16 | Joy Global Underground Mining Llc | Adaptive pitch steering in a longwall shearing system |
CN108442959A (zh) * | 2018-05-07 | 2018-08-24 | 陕西开拓建筑科技有限公司 | 一种薄煤层沿空留巷巷挡矸支架 |
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GB2576171A (en) * | 2018-08-07 | 2020-02-12 | Caterpillar Global Mining Gmbh | Self-advancing roof support for a longwall mining system |
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CN110410128B (zh) * | 2019-07-12 | 2020-12-11 | 湖南三五二环保科技有限公司 | 一种履带式采煤工作面的回撤装置及其使用方法 |
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CN115573756B (zh) * | 2022-12-09 | 2023-02-28 | 太原向明智控科技有限公司 | 一种煤矿沿空留巷用液压支架控制系统和方法 |
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- 2008-02-19 AU AU2008351273A patent/AU2008351273B2/en active Active
- 2008-02-19 RU RU2010133869/03A patent/RU2470156C2/ru not_active IP Right Cessation
- 2008-02-19 CN CN200880127061.7A patent/CN101952548B/zh active Active
- 2008-02-19 PL PL08715852T patent/PL2247826T3/pl unknown
- 2008-02-19 US US12/918,476 patent/US8567870B2/en active Active
- 2008-02-19 WO PCT/EP2008/001263 patent/WO2009103304A1/de active Application Filing
- 2008-02-19 EP EP08715852.3A patent/EP2247826B1/de not_active Not-in-force
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110242297A (zh) * | 2019-07-03 | 2019-09-17 | 精英数智科技股份有限公司 | 一种识别掘进工作面超循环作业的方法、装置及系统 |
CN110242297B (zh) * | 2019-07-03 | 2020-11-13 | 精英数智科技股份有限公司 | 一种识别掘进工作面超循环作业的方法、装置及系统 |
Also Published As
Publication number | Publication date |
---|---|
CN101952548A (zh) | 2011-01-19 |
CN101952548B (zh) | 2014-01-08 |
US8567870B2 (en) | 2013-10-29 |
RU2470156C2 (ru) | 2012-12-20 |
EP2247826B1 (de) | 2014-08-13 |
PL2247826T3 (pl) | 2015-01-30 |
AU2008351273A1 (en) | 2009-08-27 |
EP2247826A1 (de) | 2010-11-10 |
US20100320827A1 (en) | 2010-12-23 |
AU2008351273B2 (en) | 2011-07-14 |
RU2010133869A (ru) | 2012-03-27 |
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