EP2247828A1 - Method for controlling longwall mining operations, taking into account air and air conditioning resources - Google Patents
Method for controlling longwall mining operations, taking into account air and air conditioning resourcesInfo
- Publication number
- EP2247828A1 EP2247828A1 EP08715854A EP08715854A EP2247828A1 EP 2247828 A1 EP2247828 A1 EP 2247828A1 EP 08715854 A EP08715854 A EP 08715854A EP 08715854 A EP08715854 A EP 08715854A EP 2247828 A1 EP2247828 A1 EP 2247828A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- resources
- weather
- monitored
- longwall
- computer unit
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000004378 air conditioning Methods 0.000 title claims abstract description 14
- 238000005065 mining Methods 0.000 title claims abstract description 8
- 239000003245 coal Substances 0.000 claims abstract description 15
- 238000000605 extraction Methods 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000005057 refrigeration Methods 0.000 claims description 9
- 230000007774 longterm Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010943 off-gassing Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000004393 prognosis Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F3/00—Cooling or drying of air
-
- 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
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/006—Ventilation at the working face of galleries or tunnels
Definitions
- the invention relates to a method for controlling the extraction capacity of coal mined hard coal mining operations, both of a single longwall operation as well as in a combination of several run in a contiguous mine building Streb rehearsalen together.
- the weather and air-conditioning resources to be supplied to an individual long-distance operation represent a limitation or limitation of the production capacity.
- These weather and climate-related resources consist essentially of the influencing variables of the fresh weather to be supplied to a longwall operation, the refrigeration capacity of refrigeration systems used and the established gas extraction, with the aforementioned factors influence each other in part.
- the weather speed must not exceed values of 4 m / s in the stretches and 6 m / s in the stretches, whereby, depending on the available cross sections, the amount of weather to be transmitted is limited.
- the mountain temperature as well as the installed, preferably electrical power essentially determine the need for refrigeration capacity to be provided to ensure a physiologically acceptable climate for the operator, and finally, a limit of 1% and 1, 5% of methane in the weather flow, exceeding this will result in automatic shutdowns.
- the methane concentration is in turn also dependent on the transmitted amount of weather as a dilution factor and can be further influenced or controlled by the operation of a gas extraction, the effectiveness of which is in turn dependent on the arrangement and the state of Gasabsaugebohrlöchern.
- the invention is therefore based on the object of specifying a method of the aforementioned type, by means of which the best possible utilization of the extraction capacity of longwall coal mining operations is feasible.
- the target data for the weather and air conditioning supply of a planned long-distance operation are determined at an assumed plan flow.
- the installed capacity, the outgassing behavior of the seam to be recovered and the prevailing mountain temperature outgassing and climate forecasting calculations are performed depending on the planned production yield, with technical feasibility limits such as maximum permissible weather speeds, maximum possible cooler dimensions in relation to the longwall Track dimensions, maximum economically acceptable cold water mass flows and a maximum realizable vacuum in the gas extraction are observed.
- the feasibility of the supply is also to be considered on the basis of the resources available in the mine building, taking into account the supply of further plants.
- the first step is for the individual longwall operation
- the first step is for the individual longwall operation
- Both increased demand and shortage of individual long-distance farms can be compensated in an automated process by appropriate control by the computer unit across several Streb compassione, so that with the invention, the advantage of a performance optimization on the recovery capacity of an entire mine is possible.
- Individual influencing factors such as the amount of weather, cooling capacity and gas extraction can also be regulated for individual long-distance farms as well as for several long-term farms.
- the influencing variables for the weather and air-conditioning resources are individually monitored in the computer unit within setpoint / actual analyzes, and an automatic readjustment of the respective influencing variable takes place before reaching a set limit value for an individual influencing variable.
- a priority list for the automated change of the supply of individual Streb compassionen is stored with weather and air conditioning resources;
- the priority list can be freely parameterized as a function of the actual state of the individual longwall farms connected to a corresponding supply equalization.
- the incoming actual data in the computer unit is subjected to a plausibility check for the exceeding of customary data deviations and that a fault message is generated in the presence of such deviations.
- a plausibility check for the exceeding of customary data deviations and that a fault message is generated in the presence of such deviations.
- the case may occur that one or more sensors fail or indicate significantly different signal sizes within a short transmission interval.
- it can be determined in the computer unit whether the values transmitted by the sensors are within given limits. If there is a system-relevant disturbance, the system error can be logged and displayed.
- the weather speed is monitored by means of at individual points in the longwall or the downstream sections.
- the concentration of methane is monitored on the weather current, as well as the voltage applied to a gas manifold negative pressure as well as the discharged via a gas manifold volume flow and / or the methane concentration in the gas extraction.
- the actual data determined in each case provide an indication of the respective current consumption of weather and air-conditioning resources which is to be compared with the corresponding desired data stored in the computer unit.
- the soli-actual comparison can then be used to introduce appropriate changes in the supply of individual plants with weather and climate-related resources in an automated form.
- at least several long-distance farms are to work around in the mine of a mine with a central refrigeration and a central gas extraction. It is assumed according to an embodiment of the invention that a strut A produces a metrologically detected raw coal flow in the order of its planned flow rate, which is usually recognized below the technically possible production maximum.
- Sensors detect the concentration of methane gas at various points of the Abwetterstroms, so that with the data determined there, for example, reference variables M l, M2, M3 .... are recorded for the control of the weather and air conditioning resources. Furthermore, the voltage applied to the gas manifold negative pressure and also the methane concentration of the effluent in the gas manifold gas flow is detected, also the weather volume flows in the stratified operation associated routes. As further reference variables, the physical quantities for estimating the climate sum values determined in a manner known per se are also determined at selected locations with KLI 1, KLI 2, KLI 3. The weather volume flow required for the current operating state is adjusted with the aid of an OR combination of the reference variables M1, M2, M3 ...
- a further control step for example, negative pressure and volumetric flow rate of the gas evacuation are then readjusted with regard to the optimal mixture composition for subsequent utilization of the extracted methane, as long as this does not affect the reference variables for the control of the weather and air conditioning resources.
- negative pressure and volumetric flow rate of the gas evacuation are then readjusted with regard to the optimal mixture composition for subsequent utilization of the extracted methane, as long as this does not affect the reference variables for the control of the weather and air conditioning resources.
- free weather and climate engineering resources of the aforementioned type are used for a total optimization of the mining power of the mine.
- the cold water flow rates are automatically controlled so that the first possible complete in all ongoing longwall mining operations of the respective operating condition of the Streb jose triggered basic requirements are met.
- Defaults for the control behavior for demand deviations up or down can be freely programmed in the sense of a priority list. This can manifest itself, for example, in a shutdown or re-allocation of long-distance farms or in a supply of climatically demanding farms with excess cold water. The same applies mutatis mutandis to the weather volume flows recorded as actual data.
- a reduction in the total weather or cold water quantities at a partial load driven by the overall system mine can also be represented by the procedure according to the invention, unless there are technological reasons for a uniform loading of the weather or refrigeration machines used.
- a raw coal flow stream-specific outgassing and climate forecast for the progressive Creation created by means of the first in the planning stage stored in the computer unit target data as specifications for the actual control are constantly updated.
- These updated setpoints are correlated in the computer unit with the actual values actually determined. Differences found here can either directly indicate a specific individual deviation as the cause of the difference. In such a case identified individual deviation, for example, an automatic troubleshooting can be initiated, such as an automatic cleaning of a cooler with a drop in the cold water return temperature.
- a checklist with notes and error messages can be created in the computer unit, on the basis of which a regulation of the associated reference variables as well as of the thus superimposed reference variables takes place. After the adjustment and, if necessary, restoration of the condition, any remaining deviations can be systematically stored in a database of the computer unit and used for a regular recalibration of the prognosis of outgassing and climate behavior used.
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)
- Remote Sensing (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Air Conditioning Control Device (AREA)
- Feedback Control In General (AREA)
- Ventilation (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2008/001267 WO2009103308A1 (en) | 2008-02-19 | 2008-02-19 | Method for controlling longwall mining operations, taking into account air and air conditioning resources |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2247828A1 true EP2247828A1 (en) | 2010-11-10 |
Family
ID=40219426
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08715854A Withdrawn EP2247828A1 (en) | 2008-02-19 | 2008-02-19 | Method for controlling longwall mining operations, taking into account air and air conditioning resources |
Country Status (5)
Country | Link |
---|---|
US (1) | US8380345B2 (en) |
EP (1) | EP2247828A1 (en) |
CN (1) | CN101970799A (en) |
AU (1) | AU2008351277B2 (en) |
WO (1) | WO2009103308A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102022116B (en) * | 2009-09-23 | 2013-04-10 | 中国神华能源股份有限公司 | Method and system for continuous mining device |
WO2015084363A1 (en) | 2013-12-05 | 2015-06-11 | Hewlett-Packard Development Company, L.P. | Identifying a monitoring template for a managed service based on a service-level agreement |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1494549A (en) * | 1975-03-14 | 1977-12-07 | Coal Ind | Determining the concentration of sulphur in coal |
GB1592616A (en) * | 1977-06-21 | 1981-07-08 | Coal Ind | Bunkering system |
DE2733405C3 (en) * | 1977-07-23 | 1982-03-04 | Gebr. Eickhoff, Maschinenfabrik U. Eisengiesserei Mbh, 4630 Bochum | Measuring device, in particular for roller cutting machines used underground |
DE3619216A1 (en) | 1986-06-07 | 1987-12-10 | Siemag Transplan Gmbh | METHOD AND DEVICE FOR COOLING UNDERGROUND PIT CONSTRUCTIONS AND / OR THE MACHINES BUILT IN THERE |
DE3729140A1 (en) * | 1987-09-01 | 1989-03-09 | Hense & Partner Ges Fuer Edv S | System for the underground mining of minerals |
DE3729410A1 (en) | 1987-09-03 | 1989-03-16 | Diehl Gmbh & Co | Laser-optical end element |
US4952000A (en) * | 1989-04-24 | 1990-08-28 | Thin Seam Miner Patent B.V., The Netherlands | Method and apparatus for increasing the efficiency of highwall mining |
US4968098A (en) * | 1989-09-11 | 1990-11-06 | Atlantic Richfield Company | Coal seam discontinuity sensor and method for coal mining apparatus |
DE4025551A1 (en) | 1989-09-25 | 1991-04-04 | Spies Klaus | METHOD AND DEVICE FOR CONTROLLING EXTRACTION AND DRIVING MACHINES ALONG A CUTTING HORIZON BETWEEN COAL AND STONE |
DE3941290A1 (en) * | 1989-12-14 | 1991-06-20 | Bochumer Eisen Heintzmann | METHOD FOR MONITORING AND CONTROLLING OPERATING PROCEDURES IN A MINING UNDERGROUND OPERATION AND MONITORING AND CONTROL DEVICE THEREFOR |
DE4040345C1 (en) | 1990-12-17 | 1992-04-09 | Bochumer Eisenhuette Heintzmann Gmbh & Co Kg, 4630 Bochum, De | Support frame for mining - has cooler with air blower in support frame and canopy with chamber for cooler |
GB2325261B (en) | 1995-04-26 | 1999-02-17 | Arch Mineral Corp | Apparatus and method for continuous mining |
GB2303656B (en) * | 1995-04-26 | 1999-02-17 | Arch Mineral Corp | Apparatus and method for continuous mining |
DE10300387A1 (en) * | 2003-01-09 | 2004-07-22 | Udo Adam | Method for coal seam working with additional one ended short coal faces to cut otherwise unused coal from the outer edges of the main face |
DE10331909A1 (en) | 2003-07-04 | 2005-01-20 | Rheinmetall W & M Gmbh | ABC sensor device |
-
2008
- 2008-02-19 WO PCT/EP2008/001267 patent/WO2009103308A1/en active Application Filing
- 2008-02-19 CN CN2008801271338A patent/CN101970799A/en active Pending
- 2008-02-19 AU AU2008351277A patent/AU2008351277B2/en not_active Ceased
- 2008-02-19 US US12/918,478 patent/US8380345B2/en not_active Expired - Fee Related
- 2008-02-19 EP EP08715854A patent/EP2247828A1/en not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2009103308A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20110029138A1 (en) | 2011-02-03 |
AU2008351277A1 (en) | 2009-08-27 |
AU2008351277B2 (en) | 2011-07-14 |
WO2009103308A1 (en) | 2009-08-27 |
US8380345B2 (en) | 2013-02-19 |
CN101970799A (en) | 2011-02-09 |
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Legal Events
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AX | Request for extension of the european patent |
Extension state: AL BA MK RS |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: FRIEDERICH, ARMIN Inventor name: ROTHER, DETLEF Inventor name: HERMUELHEIM, WALTER Inventor name: JUNKER, MARTIN |
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DAX | Request for extension of the european patent (deleted) | ||
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
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INTG | Intention to grant announced |
Effective date: 20140128 |
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18W | Application withdrawn |
Effective date: 20140220 |