EP2247825B1 - Procede pour pratiquer de maniere automatique une ouverture definie de taille dans des systemes de veines de mines de houille - Google Patents

Procede pour pratiquer de maniere automatique une ouverture definie de taille dans des systemes de veines de mines de houille Download PDF

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Publication number
EP2247825B1
EP2247825B1 EP08707766.5A EP08707766A EP2247825B1 EP 2247825 B1 EP2247825 B1 EP 2247825B1 EP 08707766 A EP08707766 A EP 08707766A EP 2247825 B1 EP2247825 B1 EP 2247825B1
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EP
European Patent Office
Prior art keywords
plow
shield
height
inclination
shield support
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.)
Not-in-force
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EP08707766.5A
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German (de)
English (en)
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EP2247825A1 (fr
Inventor
Martin Junker
Armin Mozar
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RAG AG
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RAG AG
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Publication date
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Priority to PL08707766T priority Critical patent/PL2247825T3/pl
Publication of EP2247825A1 publication Critical patent/EP2247825A1/fr
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Publication of EP2247825B1 publication Critical patent/EP2247825B1/fr
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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 a planer moves back and forth along the front of the front.
  • the equipped with chisel planer has an adjustment-related fixed cutting height and a relatively small 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 boundary layer planing 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 inclination sensors mounted on at least three of the four main components of each shielding structure, such as bottom skid, breaker plate, support links and fractured section, determine the inclination of the shield components relative to the horizontal and from the measured data in a computer unit by comparison with the stored therein, the geometric orientation of the components and their movement during the walking defining basic data, the respective banking rights Schild ban 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 height of the shield to be determined with a relatively small height, 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 shielding rack 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.
  • the so-called Elephant Step is possible as walking control.
  • Shield extension points on each individual skids one 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 is provided that determined by determining 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.
  • Shield frame 10 shown comprises a bottom skid 11 on which two punches 12 are attached in a parallel arrangement, of which in FIG. 1 only one stamp is recognizable and carry a hanging end cap 13 at its upper end. 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 11 resting support arms 16 is supported.
  • three inclination sensors 17 are attached to the shield support 10, and two inclination sensors 17 on the bottom skid 11, a slope sensor 17 in the rear of the hangover cap 13 near the joint 15, and an inclination sensor 17 on the fracture shield 14.
  • the fourth movable member of the shield support frame 10 the support arms 16, a tilt sensor, of the four possible tilt sensors 17 three inclination sensors must be installed in order to determine the determined therewith values of the position of the shield support frame in a working space to determine.
  • the invention is not limited to the concrete in FIG. 1 illustrated arrangement of the inclination sensors limited, but includes all possible combinations of three inclination sensors to the four moving parts of the shield support frame.
  • a computer unit can be due to 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 11, gob shield 14 and hanging wall 13 to each other, the heights h 1, h 2 and h 3 determine the height h 1 for the determination of the bank level height of the longwall 30, while the height h 2 is a measure of any overhang in a fully extended shield frame or for annensetzergefahr while the height h 3 can be used to study convergence.
  • the determination of the heights h 1 , 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 expansion point 10 are calibrated after their installation in the longwall equipment by measuring the hangover cap 13, the shield 14 and the bottom skid 11 by means of handheld incinometers in the installed state and the measured values are entered into the appropriate control of the shielding frame 10.
  • these height values can be measured with tape measures and then the inclination sensors can be calibrated accordingly.
  • the illustrated shield support frame 10 is posted on a longwall conveyor 20, which has a planing guide 21 for a along the longwall conveyor 20 movable planer 22.
  • a planing guide 21 for a along the longwall conveyor 20 movable planer 22 is denoted by the reference numeral 24, the hanging wall and the reference numeral 25, the Lying 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.
  • FIG. 1 in a side view illustrated shielding frame 10 can basically have three types with respect to its Bodenkufe.
  • the Bodenkufe 11 consists of two partial skids, which are, however, firmly connected to each other via a solid steel structure 28, so that there is a so-called “tunnel skid”.
  • this tunnel skid has a better height mobility, but it comes to higher surface pressures and thus to a higher tendency to sink the two skids in the lying.
  • the Bodenkufe be formed with two partial runners, which are connected to each other via a bottom plate 29, so that there is a larger bearing surface for the Bodenkufe.
  • 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 an embodiment is shown, which is preferably used in planing operations at a low seam thickness, such as below 1.5m.
  • 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 hangover cap 13 rests against the undisturbed hanging end 24 of the seam 23. Only for clarification of the height control is in FIG. 3 exemplified in that from FIG. 3 recognizable 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 difference angle ⁇ to the prone plane cut by the planer 22 at the still standing on the original level of the horizontal 25 Bodenkufe 11 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.

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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)
  • Control Of Conveyors (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Lifting Devices For Agricultural Implements (AREA)

Claims (16)

  1. Procédé servant à pratiquer de manière automatique une ouverture de taille définie dans le cas d'un convoyeur de taille (20), d'au moins une charrue (22) guidé au niveau du convoyeur de taille (20) en tant que machine d'abattage ainsi que dans le cas d'équipements de taille présentant un soutènement de toit hydraulique dans l'exploitation de mines de charbon souterraines, dans lequel, au moyen de capteurs d'inclinaison (17) installés au niveau au moins de trois des quatre composants principaux de chaque châssis de soutènement de toit (10) tels que le châssis de sol (11), le bouclier du rupture (14), les bras porteurs (16) et au niveau de la zone côté rupture du chapeau (13), l'inclinaison des composants de bouclier est déterminée par rapport à l'horizontale et, à partir des données mesurées, dans une unité de calcul, par comparaison avec les données de base mémorisées dans cette dernière, définissant l'orientation géométrique des composants et leur déplacement au cours de la progression, la hauteur de bouclier respectivement perpendiculaire à la stratification du châssis de soutènement de toit (10) est calculée, et dans le cadre duquel la hauteur de bouclier déterminée du châssis de soutènement de toit (10) est mise en regard avec la hauteur de coupe, fixe selon la machine, de la charrue (22), et dans le cadre duquel, aux fins de la correction d'écarts constatés, une commande en hauteur de la charrue (22) à provoquer par l'intermédiaire d'une commande à cantilever (26) présente entre le châssis de soutènement à bouclier (10) et le convoyeur de taille (20) est lancée, sachant qu'au sens d'une analyse synchrone spatialement la commande en hauteur initiée de charrue (22) est maintenue jusqu'à ce que le châssis de soutènement à bouclier (10) suivant charrue (22) avec un décalage temporel ait atteint la position à laquelle se trouvait charrue (22) lorsque la commande en hauteur a été initiée.
  2. Procédé selon la revendication 1, dans le cadre duquel un châssis de soutènement de toit (10) comprenant une semelle divisée est utilisé, sachant le mécanisme d'avance (37) du châssis de soutènement à bouclier est disposé entre les deux châssis de sol séparées (35, 36) du châssis de soutènement le toit (10) et que respectivement un capteur d'inclinaison (17) est disposé au niveau des deux châssis de sol séparées (35, 36).
  3. Procédé selon la revendication 2, dans le cadre duquel, pour chacune des deux châssis de sol séparées (35, 36), la hauteur de bouclier respective est calculée à partir des angles d'inclinaison mesurés pour le chapeau (13), pour le bouclier de rupture (14) et pour le châssis de sol droite (35) et la châssis de sol gauche (36) du châssis de soutènement de toit (10).
  4. Procédé selon la revendication 3, dans le cadre duquel la hauteur de bouclier déterminée pour le châssis de soutènement de toit (10) est calculée à partir de la valeur moyenne des valeurs de hauteurs de bouclier calculées pour les deux châssis de sol séparées (35, 36).
  5. Procédé selon l'une quelconque des revendications 1 à 4, dans le cadre duquel un capteur d'inclinaison (27) est disposé au niveau du convoyeur de taille (20) et on détermine l'angle d'inclinaison du convoyeur de taille (20) dans le sens d'extraction.
  6. Procédé selon la revendication 5, dans le cadre duquel, sur la base de l'angle d'inclinaison, mesuré dans le sens d'extraction, du convoyeur de taille (20), un angle de dififérence entre le chapeau (13) du châssis de soutènement de toit (10) et le convoyeur de taille (20) est déterminé et intégré dans le calcul de l'ouverture de taille devant être pratiquée par la charrue (22).
  7. Procédé selon la revendication 5, dans le cadre duquel, sur la base de l'angle d'inclinaison, mesuré dans le sens d'extraction, du convoyeur de taille, un angle de dififérence (α) entre la semelle (11) du châssis de soutènement de toit (10) ou les châssis de sol séparées (35, 36) de celui-ci et le convoyeur de taille (20) est déterminé et intégré dans le calcul de l'ouverture de taille devant être pratiquée par la charrue (22).
  8. Procédé selon l'une quelconque des revendications 1 à 7, dans le cadre duquel la commande en hauteur de la charrue (22) est effectuée par l'intermédiaire de la commande à cantilever (26) en initiant un mouvement plongeant de la charrue (22) dans le sens d'extraction au moyen d'une entaille de daine.
  9. Procédé selon l'une quelconque des revendications 1 à 8, dans le cadre duquel la commande en hauteur de la charrue (22) est effectuée par l'intermédiaire de la commande à cantilever (26) en initiant un mouvement grimpant de la charrue (22) dans le sens d'extraction.
  10. Procédé selon l'une quelconque des revendications 1 à 9, dans le cadre duquel, par l'intermédiaire de la détermination de l'inclinaison du chapeau (13) du châssis de soutènement de toit (10) dans le sens d'extraction, le profil de cavités et/ou d'étriers est constaté dans le sens d'extraction et, par l'intermédiaire des modifications constatées de l'inclinaison du chapeau (13) sur un intervalle de temps prédéfini, la modification de l'ouverture de taille est calculée à l'avance et la commande en hauteur de la charrue (22) est ajustée de manière correspondante.
  11. Procédé selon l'une quelconque des revendications 1 à 10, dans le cadre duquel, par l'intermédiaire de la détermination de l'inclinaison de chaque châssis de soutènement de toit (10) de manière transversale par rapport au sens d'extraction, le profil de cavités et/ou d'étriers est constaté dans le sens de dépilage de la charrue (22) et la commande en hauteur de la charrue (22) est ajustée de manière à garantir une hauteur de passage suffisante de la charrue (22) au niveau des châssis de soutènement de toit (10).
  12. Procédé selon l'une quelconque des revendications 1 à 11, dans le cadre duquel, lorsque la hauteur de bouclier du châssis de soutènement de toit (10) est inférieure à la valeur pour la hauteur de coupe de la charrue (22), la convergence en résultant est déterminée et la convergence est compensée par un mouvement plongeant correspondant de la charrue (22) avec une entaille de daine.
  13. Procédé selon la revendication 12, dans le cadre duquel, dans l'éventualité de mises à l'arrêt planifiées, l'ouverture de taille est agrandie de la dimension d'une convergence attendue sur la durée de la mise à l'arrêt.
  14. Procédé selon la revendication 13, dans le cadre duquel l'absorption de puissance de l'entraînement d'étau-limeur pour la charrue (22) est détectée et enregistrée lors du passage de la charrue (22) par rapport à chaque châssis de soutènement de toit (10) et une analyse est effectuée dans l'unité de calcul pour évaluer dans quelle mesure la charrue (22) circule dans diverses sections de taille, du fait de l'absorption de puissance normale au niveau de la couche limite de la veine (23) en direction de la daine (25) ou si une absorption de puissance élevée caractérise une entaille de daine de la charrue (22).
  15. Procédé selon l'une quelconque des revendications 1 à 14, dans le cadre duquel des capteurs d'accélération sont utilisés en tant que capteurs d'inclinaison (17, 27), lesquels détectent par l'écart de l'accélération de la pesanteur la position angulaire du capteur d'accélération dans l'espace.
  16. Procédé selon la revendication 15, dans le cadre duquel, au moyen d'un procédé d'amortissement approprié, les valeurs de mesure déterminées par les capteurs d'accélération sont vérifiées et corrigées, afin d'éviter les erreurs provoquées par l'oscillation des composants utilisés.
EP08707766.5A 2008-02-19 2008-02-19 Procede pour pratiquer de maniere automatique une ouverture definie de taille dans des systemes de veines de mines de houille Not-in-force EP2247825B1 (fr)

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PCT/EP2008/001268 WO2009103309A1 (fr) 2008-02-19 2008-02-19 Procede pour pratiquer de maniere automatique une ouverture definie de taille dans des systemes de veines de mines de houille

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US20110006584A1 (en) 2011-01-13
AU2008351278B2 (en) 2011-05-19
CN101970796B (zh) 2013-07-24
PL2247825T3 (pl) 2015-04-30
US8376467B2 (en) 2013-02-19
CN101970796A (zh) 2011-02-09
WO2009103309A1 (fr) 2009-08-27
AU2008351278A1 (en) 2009-08-27
EA201001133A1 (ru) 2011-04-29
EA018180B1 (ru) 2013-06-28
EP2247825A1 (fr) 2010-11-10

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