EP0851969B1 - Dispositif pour reduire le risque d'inflammabilite lors de l'utilisation de machines de creusement de galeries a decoupage partiel - Google Patents

Dispositif pour reduire le risque d'inflammabilite lors de l'utilisation de machines de creusement de galeries a decoupage partiel Download PDF

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Publication number
EP0851969B1
EP0851969B1 EP96929125A EP96929125A EP0851969B1 EP 0851969 B1 EP0851969 B1 EP 0851969B1 EP 96929125 A EP96929125 A EP 96929125A EP 96929125 A EP96929125 A EP 96929125A EP 0851969 B1 EP0851969 B1 EP 0851969B1
Authority
EP
European Patent Office
Prior art keywords
nozzles
air
water
cutting
danger
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.)
Expired - Lifetime
Application number
EP96929125A
Other languages
German (de)
English (en)
Other versions
EP0851969A1 (fr
Inventor
Reinhard Neuper
Helmut Oberrisser
Roman Gerer
Franz Wels
Alfred Zitz
Ingolf Gastberg
Walfried Marx
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sandvik Mining and Construction GmbH
Original Assignee
Voest Alpine Bergtechnik GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Voest Alpine Bergtechnik GmbH filed Critical Voest Alpine Bergtechnik GmbH
Publication of EP0851969A1 publication Critical patent/EP0851969A1/fr
Application granted granted Critical
Publication of EP0851969B1 publication Critical patent/EP0851969B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • E21C35/22—Equipment for preventing the formation of, or for removal of, dust

Definitions

  • the invention relates to a device for reduction the risk of ignition when using part-cut tunnel boring machines with nozzles for ejecting air and / or air-water mixtures, the nozzles on one connected to the cutter arm Nozzle assembly are arranged.
  • Chisels are subject to wear and tear in continuous operation can lead to extremely hot chisel parts chipping and hit the sole. That of a partial cut line jacking or extraction machine comes cut material also at least partially on the sole before it from a discharge device or a loading device is detected. Hot chisel or steel body parts as well as pyrite parts can still hit such a pile have so much ignition potential that possibly from the surface methane gas escaping from the pile still ignites can reach. A significant increase in the amount of cooling water, which consequently also cools the sole accordingly could have the disadvantage, however, that the sole can soften, resulting in safe and precise movability a cutting or tunneling machine is no longer guaranteed is.
  • the invention now aims to ignite a gas mixture, which emerges from the pile, also with Prevent security without affecting the amount of cooling water is significantly increased and ensured at the same time is that the sole is not softened inadmissibly.
  • the invention essentially solves this problem in that at least part of the axes of the nozzles in each Swivel position of the cantilever arm at an angle to the bank rights of 30 ° towards the tunnel boring machine up to 45 ° in Brushed towards the face.
  • jets such as single-chisel spraying or spraying of the entire cutting unit, if necessary, using of sector controls to minimize water discharge, direct spraying of the pile is thus achieved and the formation of an ignitable mixture in the range of Avoided piles.
  • the training according to the invention is made according to claim 1, that at least part of the axes of the nozzles in each Swivel position of the cantilever arm at an angle to the bank rights of 30 ° towards the tunnel boring machine up to 45 ° in Brushed towards the face, such training a safe one even without pivoting the nozzle assembly Spraying and prevention of the danger of ignition of the pile in all Height positions of the cutting arm guaranteed.
  • These angles can, of course, be significantly reduced if, like this a preferred embodiment of the device according to the invention corresponds, the training is made so that the nozzle assembly and / or the nozzles depending on the pivoting position of the cantilever arm are pivotable.
  • the nozzles directed towards the sole can cover a lateral area on both sides of the cutting heads over a central angle of less than 90 ° in the projection spread on the sole, which means for the area over which chisel or Steel body parts or pyrite parts can be split off and hit the pile security against the risk of ignition.
  • the training can be easier Be taken so that the exit angle in the plan view in the lateral areas an angle of 30 ° inwards and up to 60 ° outwards, measured from one to the other Line machine longitudinal axis parallel straight lines through the apex of this angle, brush.
  • the training is advantageously made so that in addition to towards the sole and the laterally oriented nozzles towards the face Directional nozzles are provided, the discharge amount is less than 33 vol% of the others Nozzle is selected, whereby here, of course, a much smaller discharge amount for Prevention of the risk of ignition is sufficient.
  • the impact speed of the Air jet is set to more than 1.0 m / s.
  • FIGS. 4, 5 and 6 analog representations swiveled cantilever boom.
  • FIG. 1 schematically indicates a cutting or tunneling machine with 1, which carries a cutting boom 3 pivotable about a vertical pivot axis 2.
  • the Swiveling the cutting arm 3 with the cutting heads 4 by the substantially vertical axis 2 leads to a horizontal pivoting of the cutting arm 3, in addition to such a horizontal pivoting, a pivoting in Height direction about a substantially horizontal pivot axis 5 is provided.
  • the crawler chassis of the cutting machine is indicated schematically at 6, with at the front end of the crawler chassis, a charging device 7 is connected. At the far end it is Throwing end 8 of a conveyor 9 can be seen.
  • nozzle sticks 10 On the jib boom 3 nozzle sticks 10 are arranged, which a plurality of downwards wear directed nozzles.
  • the axes of the nozzles are designated 11, in which Side view of Fig. 1 three such downward nozzles can be seen.
  • the integral air or air-water quantity is plotted, which is applied to the impact surface by such nozzles, the surfaces 12 at the same time clarify the distribution of the quantities over the area.
  • Overall will through three such nozzles with the axes 11 an angle of 30 ° in the direction of Loading device 7, swept from about 45 ° in the direction of the face 13, with which the pile and the exposed impact underneath the cutting tools or cutting heads 4 with certainty with air or air-water mixtures.
  • FIG. 2 is the Longitudinal machine longitudinal axis schematically designated 14. There are two lateral areas 15 you can see which of the nozzles are being painted, the axes of which in turn are 11 are designated. The nozzles are oriented so that those brushed by the nozzles Beams meet in the longitudinal center or the longitudinal central axis 14 and lateral areas brush, the angles starting from a parallel to the longitudinal central axis 14 Straight in the direction of the center of the machine about 30 ° and laterally a maximum of 60 ° outwards.
  • FIG. 3 is a schematic front view in the direction of arrow III in FIG. 2 can be seen, with the lateral propagation of two beams, the axes of which in turn 11, is illustrated in this view. Overall, this results in one such a nozzle arrangement with a relatively small discharge quantity, a safe application of the pile in front of the cutting machine.
  • the selected angles are also sufficient to when pivoting the cutting arm in the vertical direction, as shown in FIGS. 4, 5 and 6 is shown to coat the pile safely without pivoting the nozzle carrier.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Air Bags (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Protection Of Plants (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Lasers (AREA)
  • Road Repair (AREA)

Claims (10)

  1. Dispositif pour réduire le risque d'inflammation lors de l'utilisation de machines de creusement de galeries à découpage partiel (1), comportant des tuyères pour ejecter de l'air et/ou de mélanges air-eau, les tuyères étants agencées sur un porte-vent (10) qui est relié au bras de havage (3), caractérisé en ce qu'au moins une partie des axes (11) des tuyères, dans chaque position de pivotement du bras en saillie (3), balaye un angle relatif à la perpendiculaire à la stratification de 30° dans le sens vers la machine de creusement de galeries (1) jusqu'à 45° dans le sens vers la face de galerie (13).
  2. Dispositif selon la revendication 1, caractérisé en ce que les tuyères sont montées dans le porte-vent (10) de manière pivotante.
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que le porte-vent (10) et/ou les tuyères sont pivotantes en fonction de la position de pivotement du bras en saillie (3).
  4. Dispositif selon l'une des revendications 1, 2 ou 3, caractérisé en ce que les porte-vents (10) respectivement les tuyères peuvent être mis en circuit séparément.
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que les tuyères qui sont orientées vers la sole balayent un rayon latéral des deux côtés des têtes de havage (4) sur un angle au centre qui est plus petit que 90°, mesuré dans la projection sur ladite sole.
  6. Dispositif selon la revendication 5, caractérisé en ce que les angles d'émergence, en vue de dessus, balayent dans les rayons latéraux (15) un angle de 30° vers l'intérieur et jusqu'à 60° vers l'extérieur, mesuré à partir d'une ligne droite s'étendant en parallèle à l'axe longitudinal (14) de la machine de creusement de galeries à travers l'origine desdits angles.
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que sont prévus, en plus des tuyères orientées vers la sole ainsi que les tuyères orientées latéralement, des tuyères qui sont orientées en haut dans le sens vers la face de galérie (13) et dont le débit éjecté est choisi plus faible que 33 % par volume des autres tuyères.
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé en ce que de l'air est ejecté à vitesses de plus de 75 % de la vitesse sonique.
  9. Dispositif selon l'une des revendications 1 à 8, caractérisé en ce que la quantité d'eau-air est choisie entre 1:250 et 1:2000 l/min, l'eau étant alimentée à une pression plus élévée que l'air.
  10. Dispositif selon l'une des revendications 1 à 9, caractérisé en ce que la vitesse d'impact du jet d'air est reglée à plus de 1,0 m/s.
EP96929125A 1995-09-22 1996-09-17 Dispositif pour reduire le risque d'inflammabilite lors de l'utilisation de machines de creusement de galeries a decoupage partiel Expired - Lifetime EP0851969B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT0157995A AT407897B (de) 1995-09-22 1995-09-22 Vorrichtung zur verringerung der zündgefahr beim einsatz von teilschnitt-streckenvortriebsmaschinen
AT1579/95 1995-09-22
AT157995 1995-09-22
PCT/AT1996/000162 WO1997011255A1 (fr) 1995-09-22 1996-09-17 Dispositif pour reduire le risque d'inflammabilite lors de l'utilisation de machines de creusement de galeries a decoupage partiel

Publications (2)

Publication Number Publication Date
EP0851969A1 EP0851969A1 (fr) 1998-07-08
EP0851969B1 true EP0851969B1 (fr) 2000-06-28

Family

ID=3516472

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96929125A Expired - Lifetime EP0851969B1 (fr) 1995-09-22 1996-09-17 Dispositif pour reduire le risque d'inflammabilite lors de l'utilisation de machines de creusement de galeries a decoupage partiel

Country Status (8)

Country Link
EP (1) EP0851969B1 (fr)
AT (2) AT407897B (fr)
CZ (1) CZ295238B6 (fr)
DE (1) DE59605513D1 (fr)
PL (1) PL182870B1 (fr)
RU (1) RU2165525C2 (fr)
WO (1) WO1997011255A1 (fr)
ZA (1) ZA967933B (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8632133B2 (en) * 2010-07-21 2014-01-21 Board Of Trustees Of Southern Illinois University Water sprays for dust control on mining machines
AT511284B1 (de) * 2011-03-23 2014-02-15 Sandvik Mining & Constr Oy Einrichtung zum kühlen von meisseln
CN103291308B (zh) * 2013-05-29 2015-09-16 北京中铁瑞威基础工程有限公司 用于隧道施工的悬臂式掘进机及隧道施工方法
CN107218041B (zh) * 2017-06-30 2019-05-31 江苏大学 一种综掘压气水射流预混自吸泡沫降尘装置
CN111997608B (zh) * 2020-08-17 2022-04-19 合肥学院 一种连续生产的高效率出矿设备
CN112459786B (zh) * 2020-12-09 2023-08-11 河南理工大学 一种分次切顶沿空留巷方法
CN113144797B (zh) * 2021-04-06 2022-06-17 中国矿业大学(北京) 可调式真空射流卷吸工业粉尘净化方法及装置
CN114320431B (zh) * 2021-11-26 2023-12-15 煤炭科学技术研究院有限公司 一种掘进面高效阻尘风幕

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4076315A (en) * 1971-08-05 1978-02-28 Rexnord, Inc. Dust abatement device and method of dust abatement
US4084855A (en) * 1975-12-24 1978-04-18 United States Steel Corporation Water-driven air pumping and dust-suppressing apparatus
DE2635405C3 (de) * 1976-08-06 1979-08-09 Hochtief Ag Vormals Gebr. Helfmann, 4300 Essen Anordnung zur Staubabsaugung beim Vortrieb von Tunneln und Strecken mit Hilfe von Vortriebsmaschinen
AT358509B (de) * 1978-10-10 1980-09-10 Voest Ag Einrichtung zum kuehlen der meissel von schraem- koepfen und der ortsbrust
GB2166778A (en) * 1984-11-09 1986-05-14 Coal Ind Mining machines having rotary cutter heads
DE3443289C1 (de) * 1984-11-28 1993-02-11 Friedrich Wilhelm Paurat Verfahren zur Verminderung der Zuendung von Grubengas beim Arbeiten einer Teilschnitt-Streckenvortiebsmaschine
DE3541886A1 (de) * 1985-11-27 1987-06-19 Paurat F Verfahren zur verminderung der zuendgefahr beim vortrieb von strecken in bergbaulichen untertagebetrieben
DE3609754A1 (de) * 1986-03-22 1987-09-24 Gewerk Eisenhuette Westfalia Beduesungseinrichtung fuer teilschnittmaschinen
DE4209916C2 (de) * 1992-03-27 1995-12-14 Vos Richard Grubenausbau Gmbh Bedüsungsventil mit Zuhalte

Also Published As

Publication number Publication date
AT407897B (de) 2001-07-25
CZ295238B6 (cs) 2005-06-15
PL182870B1 (pl) 2002-03-29
ZA967933B (en) 1997-04-07
PL325470A1 (en) 1998-07-20
ATA157995A (de) 2000-11-15
ATE194207T1 (de) 2000-07-15
WO1997011255A1 (fr) 1997-03-27
DE59605513D1 (de) 2000-08-03
CZ67198A3 (cs) 1998-08-12
EP0851969A1 (fr) 1998-07-08
RU2165525C2 (ru) 2001-04-20

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