EP2247825A1 - Verfahren zur automatischen herstellung einer definierten streböffnung in hobelbetrieben des steinkohlenbergbaus - Google Patents
Verfahren zur automatischen herstellung einer definierten streböffnung in hobelbetrieben des steinkohlenbergbausInfo
- Publication number
- EP2247825A1 EP2247825A1 EP08707766A EP08707766A EP2247825A1 EP 2247825 A1 EP2247825 A1 EP 2247825A1 EP 08707766 A EP08707766 A EP 08707766A EP 08707766 A EP08707766 A EP 08707766A EP 2247825 A1 EP2247825 A1 EP 2247825A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- planer
- shield
- height
- inclination
- control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000005065 mining Methods 0.000 title claims abstract description 13
- 239000003245 coal Substances 0.000 title claims abstract description 9
- 238000005520 cutting process Methods 0.000 claims abstract description 16
- 230000033001 locomotion Effects 0.000 claims description 19
- 230000015556 catabolic process Effects 0.000 claims description 15
- 230000008859 change Effects 0.000 claims description 15
- 238000006731 degradation reaction Methods 0.000 claims description 15
- 230000001133 acceleration Effects 0.000 claims description 8
- 238000011156 evaluation Methods 0.000 claims description 7
- 238000007598 dipping method Methods 0.000 claims description 6
- 238000004364 calculation method Methods 0.000 claims description 5
- 230000009194 climbing Effects 0.000 claims description 4
- 206010019133 Hangover Diseases 0.000 claims description 3
- 230000000977 initiatory effect Effects 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 claims description 2
- 230000005484 gravity Effects 0.000 claims 1
- 238000000605 extraction Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000009189 diving Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
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- 230000007935 neutral effect Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000004826 seaming Methods 0.000 description 1
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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
- E21D23/12—Control, e.g. using remote control
-
- 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
- E21C35/08—Guiding the machine
- E21C35/12—Guiding the machine along a conveyor for the cut material
- E21C35/14—Equipment for pressing the conveyor towards 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
- 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
- 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
- E21D23/0004—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
- E21D23/0039—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 and supported by a strut or by a row of struts parallel to the working face
-
- 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
- E21D23/0043—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 and supported by two or more rows of struts parallel to the working face
Definitions
- the invention relates to a method for an automatic production of a defined Strebö réelle in a longwall conveyor, at least one guided on the longwall planing machine as a mining machine and a hydraulic shield structure having Streb sesen in underground coal mining.
- planing operations in which a planer attached to the longwall conveyor guides a planer along the front of the fence.
- the equipped with chisels planer has an adjustment-related fixed cutting height and a relatively low depth of cut in the order of about 60 mm, so that in contrast to a cutting extraction, the cutting height is certainly not variable during a recovery trip.
- height control of the planer is arranged via a control cylinder arranged between the longwall conveyor as a fixed guide for the planer and the shield support frame attached to it as a so-called delivery control.
- the height control of the planer is carried out essentially according to the known method of Grenz Anlagenhobeins on the horizontal. In this method, it is determined by a carried in the level of the bottom chisel of the planer sensor, whether the bottom chisel of the planer cuts in the adjacent rock, ie in the horizontal, or in the coal. This method is initially prone to its hardware side, because the sensor in question and the associated evaluation in an extremely rough environment is built into or on the planer and thus subject to stress or occurring defects.
- the mobility of the planer requires a power supply of the hardware by battery and a data transmission by radio by means of several arranged transponders transponder, the radio conditions are very difficult to control, especially in low struts with high levels of ferromagnetic components of the longwall equipment.
- this method is also affected in its statement with uncertainties or requires corresponding time delay in a possibly necessary regulation, because a reasonably safe statement about the cut from the plane material only after a few planks, ie, after some, usually about after 5 pass-bys to meet at a shield stand.
- the invention is therefore based on the object to show a method of the type mentioned, by means of which an automation of the extraction and expansion work with regard to the production of a defined Strebö réelle is possible in planing operations.
- the invention provides a method in which by means of at least three of the four main components j edes Schildausbaugestells as Bodenkufe, rupture shield, support arms and bruch involvedem range of Hangendkappe mounted inclination sensors determines the inclination of the shield components against the horizontal and from the measured data in a computer unit Comparison with the stored therein, the geometric orientation of the components and their movement during the walking defining basic data, in each case the banking rights SchildHAN the Schildausbaugestells is calculated and in which the determined Shield height of the shield support frame with the machine-dependent fixed cutting height of the planer is adjusted, and in which for the correction of detected deviations over a existing between shield rack and longwall conveyor boom control to be effected height control of the planer, in the sense of a location-synchronous evaluation, the initiated height control of Planer is maintained until the lagging after a time delay the planing frame has reached the point at which the planer was at the time of the initiated altitude control.
- the invention has the advantage that initially, due to the plate height to be determined with a comparatively low effort, a parameter for the longwall control is available with sufficient accuracy and reliability.
- the other parameter is the plane height of the planer due to the design of the planer, which is approximated to the thickness of the seam to be plowed according to the deposit data.
- the invention provides that in the sense of a location-synchronous evaluation, the initiated height control of the planer is maintained until the lagging with a time lag the planing frame has reached the point at which the planer was at the time of the initiated height control.
- the method according to the invention essentially uses the determined height of the shield in order to set up a control loop for controlling the extraction and expansion work, including the cutting height of the planer, which in its application leads to automatic maintenance of a defined longwall opening.
- the bank rights shield height between the top edge of the cap and bottom edge runner can expediently be used as an indicator of the head height, the bank rights shield height between the top edge of the cap and bottom edge runner.
- the shield height in the field of the shield temple because otherwise the relative angle between the Hangendkappe and the Bodenkufe in individualracenanpassungsphasen to strong changes in height is based on the cap tip leads.
- control behavior of the system is to be optimized by self-learning algorithms stored in the computer unit, because a purely geometrical incremental procedure does not cover all practical effects such as ground bit condition, control behavior of the planter with different lying conditions, upward influence, mechanical play of the machine equipment can map.
- it is checked in the computer-aided control, whether the intended by the change in the height control of the planed Strebö réelle is actually achieved, and the deviations between the target of the introduced height control change and actual Strebö réelle are taken into account in the calculation and specification of subsequent changes in height control.
- Schildausbaugestelle be used with split Bodenkufe in which between the two skids the walking frame of the shield support frame is arranged so that the two individual skids of Schildplatten rack can be robbed separately from each other, in contrast to interconnected skids, whereby the so-called Elephant Step is possible as walking control.
- typical lower seam thicknesses Shield extension points on each j e e inclination sensor is arranged.
- the respective height of the shield is calculated from the measured angles of inclination for the hangover cap, the breakage plate and for the right and the left individual runners of the shield support frame, wherein it can be provided that the height of the shield determined for the shield support frame is calculated from the average of the height values of the shields calculated for the two individual runners.
- a single evaluation of the height of the sign is required for the right and left half of the sign based on the inclination angle determined on the single runners.
- a tilt sensor is arranged on the longwall conveyor and the angle of inclination of the longwall conveyor is determined in the direction of degradation, the inclination sensor arranged on the longwall conveyor indicates the direction of control of the planer and thus provides the basis for the individual control steps.
- a difference angle between the hanging wall of the shield support frame and the longwall conveyor is determined and included in the calculation of the slab to be produced by the planer.
- the invention may also be provided to additionally or alternatively to use the angle of inclination of the ungritztten hanging wall hanging Hangendkappe as a reference variable to determine the difference angle between the Bodenkufe of the Schildausbaugestells or the corresponding single runners and the longwall conveyor and in the calculation of the planer Include to be produced Strebö réelle.
- a control of the shield support frame is taking into account the determined Skid slope sufficient; In that case, it does not then require the determination of a skid angle.
- a need for control of the planer occurs regularly and inevitably when driving through pronounced in the direction of degradation troughs and / or saddles.
- the approach of a saddle is detected by the detected change in inclination of the adjacent hanging wall end cap of the Schildausbaugestells.
- the change in height in the sense of a reduction in the height can be calculated for each further walking process of the respective shielding structure.
- a height control movement in the sense of a dipping movement is initiated.
- the invention determines the determination of the slope of the hanging wall of the shield extension in the direction of degradation of the course of troughs and / or saddles in the degradation direction and predicted over the observed changes in the slope of the hanging wall over a predetermined period, the change in the longwall and the height control of the planer is adjusted accordingly.
- the inclination sensors arranged on the shield extension points also give a measure of the inclination of the shield expansion point transversely to the direction of dismantling, since in the direction of travel of the planer during the course of the run, saddles and hollows can be pronounced. Since the course of the hanging and lying in the longitudinal direction of the pillar can be derived from the bank of the shield extension, according to an embodiment of the invention provides that on the determination of the inclination of the individual shield extension transverse to the direction of degradation of the course of troughs and / or saddles in Verhiebscardi of the planer and the height control of the planer is adjusted so that a sufficient clearance height of the planer is ensured at the Schildausbaugestellen.
- the comparison of the desired shield height with the actual shield height can be superimposed by the occurrence of convergence, which reduces the cut-free end opening against the supporting effect of the shield construction used.
- the convergence occurred and the convergence is compensated for example by a corresponding dipping motion of the planer with prone.
- the longwall opening is increased by the amount of convergence to be expected over the duration of the operational standstill.
- the power consumption of the planer drive for the planer while passing the planing with respect to the individual Schildausbaugestelle is recorded and recorded and in the computer unit an evaluation takes place, to what extent in individual Strebabitesen the planer due to normal power consumption the boundary layer runs from the seam to the lying or whether a high power consumption marks a lying incision of the planer. If the height of the shield coincides with the amount of seam available from the deposit data, additional information that the planer will run to the deck at the boundary may be very helpful.
- acceleration sensors are used as inclination sensors, which detect the angular position of the acceleration sensor in space via the deviation from the gravitational acceleration.
- the angle to the vertical is determined physically, which is to be converted into the angle of inclination for the inclination of the shield components to the horizontal. It can be provided for eliminating caused by the vibrations of the components used errors that the measured values determined by the acceleration sensors are checked and corrected by means of a suitable damping method.
- Fig. 3 is a longwall equipment with planer, longwall conveyor and
- the shield support frame 10 shown in Figure 1 comprises a Bodenkufe 1 1, on the two pistons 12 are attached in a parallel arrangement, of which in Figure 1, only one stamp is recognizable and carry at its upper end a hanging end cap 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 hanging end cap 13, a fracture shield 14 is articulated by means of a hinge 15, wherein the fracture shield of in the side view 2 on the Bodenkufe 1 1 resting support arms 16 is supported.
- three inclination sensors 17 are mounted on the shield support 10, and two are a tilt sensor 17 on the bottom skid 11, an inclination sensor 17 in the rear of the hillside cap 13 near the joint 15, and a tilt sensor 17 on the fracture shield 14.
- the support arms 16, a tilt sensor, of the four possible inclination sensors 17 three inclination sensors must be installed in order with the determined therefrom inclination values of the position of the shield support in a Determine the amount of waste.
- 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.
- a computer unit 3 can be based on the known and stored therein, the geometrical alignment of the components and their movement during the below-defining kinematic data according to the position of Budenkufe 1 1, gob shield 14 and hanging wall 13 to each other, the heights hi, h 2 and h determine the height hi for the determination of the bank-legal height of the longwall 30, while the height h 2 is a measure of a possible excess height at a fully extended shield frame stand or for annensetzergefahr while the height h 3 can be used to study convergence.
- the determination of the heights hi, h 2 and h 3 can take place on the basis of the measured values of the inclination sensors 17, the values measured by these sensors 17 being compared in the mentioned computer unit with the basic data stored therein for the geometric alignment of the components and their movement data.
- the individual shield removal point 10 are calibrated after their installation in the longwall equipment by the hanging wall 13, the shield 14 and the Bodenenkufe 1 1 measured by handheld incinerator in the installed state and the measured values are entered into the appropriate control of Schildausbaugestells 10. Insofar as the height values hi, h 2 and h 3 are then displayed in the blade control, these height values can be measured with tapes and then the inclination sensors can be calibrated accordingly.
- the illustrated shield support frame 10 is struck on a longwall conveyor 20 which has a planing guide 21 for a planer 22 which can be moved along the longwall conveyor 20.
- reference numeral 24 designates the hanging wall
- reference numeral 25 denotes the horizontal end of the seam 23.
- the longwall conveyor 20 is connected by means of a boom control 26 with the associated shield support frame 10, via the boom control 26 of the longwall conveyor 20 is adjustable in its position against the horizontal in the dismantling direction, so that by raising or lowering the side stops for the boom control 26 am Strebannaer 20 the plane a diving movement or a climbing movement is to mediate.
- a tilt sensor 27 is arranged on the longwall conveyor 20.
- the shield support frame 10 shown in a side view in Figure 1 can basically have three types with respect to its Bodenkufe.
- the floor skid 11 consists of two partial runners which, however, are firmly connected to one another via a solid steel structure 28, so that a so-called "tunnel runner” results
- This tunnel runner has a better height mobility, but comes It leads to higher surface pressures and thus to a higher tendency to sink the two skids into the lying.
- the floor skid may be formed with two partial runners, which are connected to one another via a base plate 29, so that a larger bearing surface for the floor skid results.
- the surface pressure and thus the tendency is reduced, that impress the shield extension, especially in the area of the tip tip in the lying.
- this design limits the mobility for rapid changes in the height of the sign, because in particular at a rapid increase in the height of the sign, the stepping 37 can not follow a fast emerging longwall conveyor, because the walker then abuts the closed floor panel 29, which limits the possibility of height adjustment.
- FIG. 2c shows an embodiment which is preferably used in planing operations with a low seam thickness, for example below 1.5 m.
- separate individual runners 35 and 36 are provided, between which the walking mechanism 37 is arranged such that the right-hand single runner 35 in the walking direction can be raised independently of the single runner 36 in the direction of travel.
- This separation of the individual runners 35 and 36 allows the steps of the shield support frame 10 in the so-called Elephant-Step, by means of which a sinking of the two single skids 35 and 36 in the horizontal 25 and accumulation and postponement of debris against the skids 35, 36 can be counteracted.
- FIG 3 is shown schematically that the hanging end cap 13 rests against the undisturbed hanging end 24 of the seam 23. Only to illustrate the height control is exemplified in Figure 3, that in the recognizable from Figure 3 position the planer 22 has been mediated a dipping motion by the longwall conveyor 20 was slightly raised by the boom control 26.
- the planer 22 cuts easily into the horizontal 25, so that there is a differential angle ⁇ to the prone plane cut by the planer 22 at the still standing on the original level of the lying 25 Bodenkufe 1 1 of the shield support frame 10.
- this difference angle ⁇ and the position of the shield components determined by the inclination sensors 17 on the shield support frame 10 it is possible to calculate the change in the longwall during the further recovery runs of the planer 22.
- the Shield height corresponding to the thickness of the seam 23 to be taken from the available deposit data in the area in the restricted area including the information from a boundary layer recognition set up on the planer 22, as to whether the planer 22 cuts in the neighboring rock, preferably in the horizontal area 25 or not.
- the control of the extraction and the expansion work can therefore be placed on a secure basis.
- a sensor may be configured to such unwanted contacts of the planer 22 recognize, because even the detection of such contacts as control data in the process control can be taken complementary.
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)
- Mechanical Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Control Of Conveyors (AREA)
- Lifting Devices For Agricultural Implements (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL08707766T PL2247825T3 (pl) | 2008-02-19 | 2008-02-19 | Sposób automatycznego wykonywania określonego otworu w ścianie w operacjach strugania w górnictwie węgla kamiennego |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2008/001268 WO2009103309A1 (de) | 2008-02-19 | 2008-02-19 | Verfahren zur automatischen herstellung einer definierten streböffnung in hobelbetrieben des steinkohlenbergbaus |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2247825A1 true EP2247825A1 (de) | 2010-11-10 |
EP2247825B1 EP2247825B1 (de) | 2014-11-19 |
Family
ID=40219995
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08707766.5A Not-in-force EP2247825B1 (de) | 2008-02-19 | 2008-02-19 | Verfahren zur automatischen herstellung einer definierten streböffnung in hobelbetrieben des steinkohlenbergbaus |
Country Status (7)
Country | Link |
---|---|
US (1) | US8376467B2 (de) |
EP (1) | EP2247825B1 (de) |
CN (1) | CN101970796B (de) |
AU (1) | AU2008351278B2 (de) |
EA (1) | EA018180B1 (de) |
PL (1) | PL2247825T3 (de) |
WO (1) | WO2009103309A1 (de) |
Cited By (1)
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CN110529115A (zh) * | 2019-09-12 | 2019-12-03 | 大同煤矿集团有限责任公司 | 一种应对顶板破碎以及支架倾斜的采煤方法 |
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UA98900C2 (ru) * | 2008-12-17 | 2012-06-25 | Раг Акциенгезельшафт | Способ установки автоматической системы управления уровнем струга в струговых выемках угольной промышленности |
DE102010000481A1 (de) * | 2010-02-19 | 2011-08-25 | Bucyrus Europe GmbH, 44534 | Verfahren zur Bestimmung der Position oder Lage von Anlagekomponenten in Bergbau-Gewinnungsanlagen und Gewinnungsanlage |
CN102392664B (zh) * | 2011-07-26 | 2014-04-16 | 北京天地玛珂电液控制系统有限公司 | 一种带倾角传感器的液压支架及其高度测量方法 |
UA109514C2 (uk) * | 2012-04-02 | 2015-08-25 | Забійне обладнання з покладеними між забійним конвеєром і каркасами щитового кріплення шланговими нівелірами | |
UA109515C2 (uk) * | 2012-04-02 | 2015-08-25 | Забійне обладнання з покладеними на його каркасах щитового кріплення шланговими нівелірами | |
US8985699B2 (en) | 2013-03-14 | 2015-03-24 | Seneca Industries Inc. | Mining methods and equipment |
EP2803818B1 (de) * | 2013-05-13 | 2019-02-27 | Caterpillar Global Mining Europe GmbH | Steuerverfahren für strebwalze |
PL419230A1 (pl) | 2014-01-21 | 2017-05-22 | Joy Mm Delaware, Inc. | Układ równoważenia zbiorników płynu do maszyny górniczej |
US9506343B2 (en) | 2014-08-28 | 2016-11-29 | Joy Mm Delaware, Inc. | Pan pitch control in a longwall shearing system |
ZA201506069B (en) | 2014-08-28 | 2016-09-28 | Joy Mm Delaware Inc | Horizon monitoring for longwall system |
WO2018223028A1 (en) | 2017-06-02 | 2018-12-06 | Joy Global Underground Mining Llc | Adaptive pitch steering in a longwall shearing system |
CN109268049A (zh) * | 2018-08-08 | 2019-01-25 | 中国神华能源股份有限公司 | 综采工作面回撤方法 |
CN110145353B (zh) * | 2019-06-14 | 2024-06-14 | 中国矿业大学(北京) | 一种基于rfid的自动化放煤控制系统及方法 |
CN113653525B (zh) * | 2021-08-13 | 2024-04-30 | 天津美腾科技股份有限公司 | 放顶煤控制的矫正方法、装置和电子设备 |
US12000284B1 (en) * | 2023-01-10 | 2024-06-04 | Swanson Industries, Inc. | Swing arm plow apparatuses and methods |
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DE1758270A1 (de) * | 1968-05-04 | 1971-01-07 | Bergwerksverband Gmbh | Einrichtung zur maschinellen Gewinnung von Kohle |
DE2714506C2 (de) | 1977-04-01 | 1982-06-16 | Bergwerksverband Gmbh, 4300 Essen | Verfahren und Einrichtung zur Überwachung und Steuerung von Strebausrüstungen |
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DE2917609C2 (de) | 1979-05-02 | 1985-12-19 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | Einrichtung zur Steuerung der Vorpfändkappen eines Schreitausbaus in Abhängigkeit vom Abbaufortschritt |
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DE3743758A1 (de) * | 1987-12-23 | 1989-07-13 | Bochumer Eisen Heintzmann | Verfahren zur lenkung der abbaufront |
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DE19528378C1 (de) * | 1995-08-02 | 1996-11-28 | Dbt Gmbh | Hydraulisches Schildausbaugestell |
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CN101146979B (zh) * | 2005-03-17 | 2011-09-14 | 迪芬巴赫控制系统股份有限公司 | 用于煤矿开采的装置 |
CN2844442Y (zh) * | 2005-11-04 | 2006-12-06 | 天地科技股份有限公司 | 一种两柱掩护式大采高放顶煤液压支架 |
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UA98900C2 (ru) * | 2008-12-17 | 2012-06-25 | Раг Акциенгезельшафт | Способ установки автоматической системы управления уровнем струга в струговых выемках угольной промышленности |
AU2009351410B2 (en) * | 2009-08-20 | 2014-10-09 | Rag Aktiengesellschaft | Method for producing a face opening using automation systems |
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2008
- 2008-02-19 EA EA201001133A patent/EA018180B1/ru not_active IP Right Cessation
- 2008-02-19 PL PL08707766T patent/PL2247825T3/pl unknown
- 2008-02-19 AU AU2008351278A patent/AU2008351278B2/en not_active Ceased
- 2008-02-19 WO PCT/EP2008/001268 patent/WO2009103309A1/de active Application Filing
- 2008-02-19 EP EP08707766.5A patent/EP2247825B1/de not_active Not-in-force
- 2008-02-19 CN CN2008801271291A patent/CN101970796B/zh not_active Expired - Fee Related
- 2008-02-19 US US12/918,481 patent/US8376467B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
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See references of WO2009103309A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110529115A (zh) * | 2019-09-12 | 2019-12-03 | 大同煤矿集团有限责任公司 | 一种应对顶板破碎以及支架倾斜的采煤方法 |
CN110529115B (zh) * | 2019-09-12 | 2021-07-13 | 晋能控股煤业集团有限公司 | 一种应对顶板破碎以及支架倾斜的采煤方法 |
Also Published As
Publication number | Publication date |
---|---|
EA018180B1 (ru) | 2013-06-28 |
US8376467B2 (en) | 2013-02-19 |
EA201001133A1 (ru) | 2011-04-29 |
PL2247825T3 (pl) | 2015-04-30 |
AU2008351278A1 (en) | 2009-08-27 |
CN101970796A (zh) | 2011-02-09 |
WO2009103309A1 (de) | 2009-08-27 |
CN101970796B (zh) | 2013-07-24 |
AU2008351278B2 (en) | 2011-05-19 |
US20110006584A1 (en) | 2011-01-13 |
EP2247825B1 (de) | 2014-11-19 |
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