EP0889199B1 - Driving shield - Google Patents

Driving shield Download PDF

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Publication number
EP0889199B1
EP0889199B1 EP97111226A EP97111226A EP0889199B1 EP 0889199 B1 EP0889199 B1 EP 0889199B1 EP 97111226 A EP97111226 A EP 97111226A EP 97111226 A EP97111226 A EP 97111226A EP 0889199 B1 EP0889199 B1 EP 0889199B1
Authority
EP
European Patent Office
Prior art keywords
annular space
space
screw conveyor
screw
shield driving
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
EP97111226A
Other languages
German (de)
French (fr)
Other versions
EP0889199A1 (en
Inventor
Gebhard Lehmann
Werner Burger
Martin Herrenknecht
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.)
Herrenknecht AG
Original Assignee
Herrenknecht AG
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 Herrenknecht AG filed Critical Herrenknecht AG
Priority to AT97111226T priority Critical patent/ATE196527T1/en
Priority to DE59702382T priority patent/DE59702382D1/en
Priority to EP97111226A priority patent/EP0889199B1/en
Priority to PT97111226T priority patent/PT889199E/en
Priority to ES97111226T priority patent/ES2152600T3/en
Publication of EP0889199A1 publication Critical patent/EP0889199A1/en
Application granted granted Critical
Publication of EP0889199B1 publication Critical patent/EP0889199B1/en
Priority to GR20000402762T priority patent/GR3035074T3/en
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
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
    • E21D9/124—Helical conveying means therefor
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
    • E21D9/0642—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield having means for additional processing at the front end
    • E21D9/0657—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield having means for additional processing at the front end structurally associated with rock crushers
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
    • E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
    • E21D9/0875—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a movable support arm carrying cutting tools for attacking the front face, e.g. a bucket
    • E21D9/0879—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a movable support arm carrying cutting tools for attacking the front face, e.g. a bucket the shield being provided with devices for lining the tunnel, e.g. shuttering

Definitions

  • the invention relates to a shield driving device with a a mining space perpendicular to the tunnel axis delimiting wall, with a rear the baffle located on the baffle, the a pressure wall is closed perpendicular to the tunnel axis, and with an annular space discharge device, those in the annulus behind one in the diving wall brought in, with a baffle closure device closable baffle opening is arranged so that from material entering the annulus into the annular space can be removed is.
  • the known shield jacking device has one The baffle that delimits the installation space, together with a Pressure wall arranged on the tunnel room side and a shield jacket encloses an annulus.
  • an annulus discharge device is provided in the annulus in the area a lockable with a baffle closure device, baffle opening in the lower area of the baffle an annulus discharge device is provided with which a liquid-assisted mining operation from the mining room in material entering the annulus is removable.
  • DE 37 41 460 C2 is a shield driving device known, via a screw conveyor flanged to a baffle and also flanged to the diving wall hydraulic conveyor.
  • This for Mining operation with supports for the working face using earth pressure, compressed air or support fluid set up shield jacking device has a screw opening closure device in order to the screw conveyor device in a liquid-assisted mining operation to empty and to apply compressed air, so that a screw conveyor tube as a pressure chamber for Compensation of pressure fluctuations in the support fluid is used.
  • This device is a mining operation with supports Face can be carried out using earth pressure or supporting fluid, however, it has the disadvantage that maintenance work in particular at the entrance to the hydraulic conveyor only with a compressed air-supported working face under accordingly difficult and dangerous conditions is possible.
  • DE 42 13 987 A1 describes a shield propulsion device for rapid changes between liquid-assisted mining operations and earth pressure-supported face.
  • the invention has for its object a shield jacking device to create the type mentioned at the outset effective mining operation with liquid-based or earth pressure-based Face with relatively easy access the annulus discharge device is possible.
  • the annulus is in the Area of the annulus discharge device and the screw conveyor device separating partition provided to a possible complete removal of in liquid-assisted mining operations material fed through the baffle opening to concentrate in the area of the annulus discharge device.
  • one is closable Overcurrent line provided in the manner of a communicating Tube connects the annulus with the mining space. It is it is particularly useful to have one end of the overcurrent line in the upper area of the mining area and the other end in the lower To end area of the annulus, the annulus side End of the overcurrent line is so deep that it below the level of a support fluid that has entered the annulus lies. This causes pressure fluctuations between the Removal space and the annular space even when the baffle closure device is closed and closed screw locking device compensable.
  • the screw conveyor device via an opening opening into the annulus, which is connected to a for example as a slide closure device is lockable. This allows one of the usual conveying directions opposite in earth pressure-assisted mining operations Rotation of the screw conveyor device already in the screw conveyor device material brought in for removal by means of convey the annulus discharge device into the annulus.
  • a fluid proportioning unit provided that continue to a fluid line assembly connected to the supply and discharge of a dilution fluid is. This allows you to transition from an earth pressure based Operating in a liquid-assisted mining that increasingly thinning with the screw conveyor Material removed from the quarry while maintaining the support pressure in the mining area with further dilution discharge hydraulically.
  • Fig. 1 shows an embodiment in an end face side view a shield driving device according to the invention removed cutting wheel.
  • the shield jacking device according to Fig. 1 leading to a change of operation between a liquid-based Mining operation and an earth pressure-assisted mining operation is set up without manual intervention, points to the drive of the cutting wheel, not shown in Fig. 1, a central Cutting wheel drive 1 on the one side through a mining space delimiting baffle 2 passes through.
  • the shield jacking device also has a shield jacket 3, the surrounding the baffle 2 from the cutting wheel in the direction the tunnel space side of the shield tunneling device extends.
  • At the embodiment shown in Fig. 1 is the mining space through an upper baffle door 4 and a side baffle door 5, both of which are introduced into the baffle 2, accessible.
  • annulus discharge device 6 on the back of the baffle 2 located annulus is arranged.
  • the annulus discharge device 6 lies behind one, preferably in the lower region of the Baffle 2 introduced baffle opening 7 with a for example from a baffle valve 8 and a baffle valve actuating cylinder 9 formed baffle closure device can be closed in a pressure-tight manner.
  • the annulus discharge device 6 points in the illustrated embodiment a stone crusher jaw 11 upstream of a rake 10, those for crushing larger stones using stone breaker actuation cylinders 12 are movable towards each other.
  • Flushing nozzles 13 are used to remove material the area of the baffle opening 7 to a sealing Ensure that the baffle valve 8 is closed.
  • Behind the rake 10 is not one in the illustration according to FIG. 1 Visible annulus one in the mining space and Annulus suction / pressure line arrangement as hydraulic Conveyor arranged.
  • the shield driving device according to FIG. 1 has a Screw conveyor 14 on the annulus side on the Baffle 2 is attached.
  • the screw conveyor device 14 has a rotatable screw conveyor 15, which has a in the Baffle 2 introduced screw opening 16 directly with the mining space can be connected.
  • the screw opening 16 is by means of a worm lock actuating cylinder 17 articulated screw closure slide 18 as in components arranged in this embodiment a screw opening closure device preferably in highly pressure-tight closable.
  • the shield driving device according to FIG. 1 has a by means of a shut-off device, not shown in Fig. 1 pressure-tight lockable overcurrent line 21, the one with a mining space end arranged in the upper region of the baffle 2 22 in the mine and with one in the bottom Area of the annulus opening 23 end of a flow Connection between the mining space and the Creates annulus.
  • the end of the space 22 is in Area of the highest section of the mining area and that Annulus end 23 at least below the central horizontal of the Shield driving device arranged so that it is ensured that the annular space end 23 with a liquid-assisted propulsion below a level 24 one that has entered the annulus Support liquid 25 is. This causes pressure differences between the mining space and the annulus even when closed Baffle slide 8 and closed screw lock slide 18 compensable.
  • FIG. 2 shows the shield driving device according to FIG. 1 in one Section along the line II-II of FIG. 1.
  • the illustration 2 is a tunnel room side behind the rake 10 Mouthpiece, protruding into the annular space 26 27 to act upon the annular space 26 and the extraction space provided with support fluid suction / pressure line arrangement to recognize.
  • the annular space connector 27 is used for removal of in the liquid-assisted mining operation from the mining room material that has entered the annular space 26.
  • FIG. 2 to see the cutting wheel 28, not shown in FIG as well as the baffle 2 with kneading arms 29 for mixing the earth pressure-assisted mining operation in the mining room present mush-like substance is equipped.
  • a security gate 30 with a in the Annular space door 31 opening out, annulus 26 Pressure wall 32 closing on the tunnel room side, on the pressure wall 32 attacking jacking presses 33, one in the middle Erector 34, a shield tail adjoining the shield jacket 3 35 and segments 36 for lining the tunnel space to recognize.
  • Fig. 3 shows a section of the shield driving device according to Fig. 1 along the line III-III shown in Fig. 1 with the screw conveyor 14.
  • the screw conveyor is 15 the screw conveyor 14 with a front portion the baffle 2 can be advanced so that it is in the excavation space intervenes, as well as to close the screw lock slide 18 retractable behind the baffle 2 on the tunnel room side.
  • the Screw conveyor 15 runs in an end that crosses the annular space 26 Conveyor screw guide tube 37 on the tunnel space side End of a removal unit 38 for removing the through the screw conveyor 15 material removed from the extraction space under in essential atmospheric pressure is connected.
  • Fig. 4 shows a horizontal section through the shield driving device 1, the annulus discharge device 6 and Screw conveyor device 14 in plan view. From Fig. 4 is clearly recognizable that the annular space connector 27 in the annular space 26 and the extraction space socket 20 open into the extraction space 39. The extraction space socket 20 and the annular space socket 27 are at this embodiment to a common suction / pressure line 40 connected.
  • a change of operation from a liquid-assisted mining operation in an earth pressure-assisted mining operation is carried out as follows.
  • the annular space discharge device is in the liquid-assisted mining operation 6 with the baffle valve open 8 in Operation and the screw opening 16 with the screw lock slides 18 closed.
  • the baffle valve 8 is now moved to close the baffle opening 7 and the screw lock slides 18 are opened.
  • With increasing amount of usually silty soil in the Dismantling space 39 takes place with increasing thickening of the in the mining space 39 existing material the transition to earth pressure-assisted mining operation, preferably with advanced screw conveyor 15 the pulp material from the Mining space 39 is removed.
  • FIGS. 1 and 5 show a further exemplary embodiment of a shield driving device according to the invention in a mine side Front view without cutting wheel, with the efficient change of operation between a liquid-assisted mining operation and a earth pressure-assisted mining operations are feasible in the shield driving devices according to FIGS. 1 and 5 corresponding components with the same reference numerals provided and are not explained in more detail below.
  • the 5 has the screw conveying device 14 an annular space slide 41 with which one Annulus opening between the screw conveyor 15 and the Annulus 26 can be opened and closed.
  • the annular space 26 is in the area between the annular space discharge device 6 and the screw conveyor device 14 open.
  • FIG. 6 shows a horizontal section through the shield driving device 5 is a plan view of the annulus discharge device 6 and the screw conveyor device 14.
  • Fig. 6 is clearly seen that the annular space 26 in the area between the annular space discharge device 6 and the screw conveyor device 14 is continuous and with the annulus slide 41 the annular space opening opening into the annular space 26 in the screw conveyor tube 37 can be closed in a pressure-tight manner is.
  • the annular space slide 41 can be opened, so that the mush-like, by the screw conveyor 15 is removed from the extraction space 39 Material ejected into the annular space 26 and in operation taken annulus discharge device 6 for removal is fed.
  • the annular space valve 41 opened and the screw conveyor 15 against Direction of rotation in earth pressure-assisted mining operation, so that still existing in the screw conveyor tube 37 relatively mushy material emptied into the annular space 26 becomes. This can be the case, for example, with compressed air filled annulus 26 take place so that a substantially complete emptying of the screw conveyor tube 37 is achieved.
  • Fig. 7 shows in a section along the line VII-VII of FIG. 5 Side view in particular the screw conveyor 14 a shield driving device according to the invention, at the one preferably at the end of the tunnel space Fluid admixing unit 42 is flanged.
  • the fluid proportioning unit 42 has a mixing container 43, which has a mixing container slide 44 with the screw conveyor 15 in flow Connection can be made. Furthermore, the mixing container 43, a mixed fluid supply line 45 and a mixed fluid discharge line 46 set, which open into the mixing container 43.
  • the fluid admixing unit 42 By means of the fluid admixing unit 42, at a transition from an earth pressure-based mining operation into a liquid-based one Mining operation continued operation of the screw conveyor 15 even as the liquid additive gradually thins out Material enables by with the removal unit deactivated 38 the screw conveyor 15 material into the mixing container 43 promotes and dilutes this material with that in the Mixed fluid supply line 45 mixed fluid supply and discharge is transported away via the mixed fluid discharge line 46 as long as until the annular space discharge device 6 is put into operation efficiently can be.
  • FIG. 1 is based on Fig. 5 and Fig. 6 explained transition from an earth pressure-based in a liquid-assisted mining operation with the open Annulus slide 41 and uncoupled removal unit 38 to close the mixing valve slide 44.
  • Fig. 8 shows another in a partially sectioned side view Embodiment of a shield driving device according to the Invention with a screw conveyor 14, the under Atmospheric pressure is accessible, with the embodiments 7 and FIG. 8 corresponding components provided with the same reference numerals and in the following are no longer explained.
  • annulus screw slide valve 47 arranged as an annulus side Component of a screw opening closure device provided with the provided in addition to the extraction room side Screw lock slides 18 of the screw opening lock device the screw opening 16 reliably can be closed in a pressure-tight manner.
  • the screw conveyor 14 is detachably attached to the baffle 2 and by means of a screw conveyor retraction cylinder 48 completely retractable behind the baffle 2 on the annulus side.
  • the screw conveyor 15 is withdrawn, and the Screw closure slide 18 are closed.
  • the annular space 26 is located below Compressed air to prevent leaks in the screw closure slide 18 balance.
  • the screw conveyor 14 of the baffle 2 released, and the annulus slide valve 47 and the baffle slide 8 are also closed.
  • the excavation space 39 is used to support the working face filled with a pressurized fluid, and the Annulus 26 is placed under atmospheric pressure.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Paper (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Liquid Crystal (AREA)
  • Valve Device For Special Equipments (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

The ring space discharge device (6) is arranged in the ring space behind a dip wall aperture (7) closable by a closure device (8, 9), so that the material from the mining extraction space entering the ring space can be discharged. In the dip wall (2) is a worm aperture (16), which is closable by a closure device (17, 18). To the worm aperture connects a conveyor device (14) for direct discharge of material from the mining extraction space, which crosses the ring space. An overflow conduit (21) connects the mining extraction space and the ring space. A mining extraction space end (22) of the overflow conduit issues in the upper area of the mining extraction space and a ring space end (23) of the overflow conduit issues in the lower area of the ring space.

Description

Die Erfindung betrifft eine Schildvortriebseinrichtung mit einer einen Abbauraum lotrecht zur Tunnelachse begrenzenden Tauchwand, mit einem rückseitig der Tauchwand gelegenen Ringraum, der tunnelraumseitig von einer Druckwand lotrecht zur Tunnelachse abgeschlossen ist, und mit einer Ringraumabführvorrichtung, die in den Ringraum hinter einer in die Tauchwand eingebrachten, mit einer Tauchwandverschlußvorrichtung verschließbaren Tauchwandöffnung angeordnet ist, so daß von dem Abbauraum in den Ringraum eintretendes Material abführbar ist.The invention relates to a shield driving device with a a mining space perpendicular to the tunnel axis delimiting wall, with a rear the baffle located on the baffle, the a pressure wall is closed perpendicular to the tunnel axis, and with an annular space discharge device, those in the annulus behind one in the diving wall brought in, with a baffle closure device closable baffle opening is arranged so that from material entering the annulus into the annular space can be removed is.

Eine derartige Vorrichtung ist aus der DE 42 25 838 C2 bekannt. Die vorbekannte Schildvortriebseinrichtung verfügt über eine einen Abbauraum begrenzende Tauchwand, die zusammen mit einer tunnelraumseitig angeordneten Druckwand sowie einem Schildmantel einen Ringraum umschließt. In dem Ringraum ist im Bereich einer mit einer Tauchwandverschlußvorrichtung verschließbaren, im unteren Bereich der Tauchwand eingebrachten Tauchwandöffnung eine Ringraumabführvorrichtung vorgesehen, mit der bei einem flüssigkeitsgestützten Abbaubetrieb von dem Abbauraum in den Ringraum eintretendes Material entfernbar ist. Durch das Vorsehen der Tauchwandverschlußvorrichtung ist zwar bei flüssigkeitsgestützter Ortsbrust der Ringraum unter Normaldruck zugänglich, allerdings weist sie den Nachteil auf, daß bei insbesondere schluffigen Böden eine Abstützung der Ortsbrust mit einer Stützflüssigkeit sowie ein Abbau des anstehenden Materiales nur wenig effektiv durchführbar ist.Such a device is known from DE 42 25 838 C2. The known shield jacking device has one The baffle that delimits the installation space, together with a Pressure wall arranged on the tunnel room side and a shield jacket encloses an annulus. In the annulus is in the area a lockable with a baffle closure device, baffle opening in the lower area of the baffle an annulus discharge device is provided with which a liquid-assisted mining operation from the mining room in material entering the annulus is removable. By the Providing the baffle closure device is indeed with liquid-based Face of the annulus accessible under normal pressure, however, it has the disadvantage that in particular silty soils support the face with a supporting liquid as well as the dismantling of the pending material only a little is effectively feasible.

Aus der DE 37 41 460 C2 ist eine Schildvortriebseinrichtung bekannt, die über eine an eine Tauchwand angeflanschte Schnekkenfördervorrichtung und eine ebenfalls an die Tauchwand angeflanschte hydraulische Fördervorrichtung verfügt. Diese zum Abbaubetrieb mit Stützen der Ortsbrust mittels Erddruck, Druckluft oder Stützflüssigkeit eingerichtete Schildvortriebseinrichtung verfügt über eine Schneckenöffnungsverschlußvorrichtung, um bei einem flüssigkeitsgestützten Abbaubetrieb die Schneckenfördervorrichtung zu entleeren und mit Druckluft zu beaufschlagen, so daß ein Förderschneckenführungsrohr als Druckkammer zum Ausgleich von Druckschwankungen in der Stützflüssigkeit dient. Mit dieser Vorrichtung ist zwar ein Abbaubetrieb mit Stützen der Ortsbrust mittels Erddruck oder Stützflüssigkeit durchführbar, allerdings weist sie den Nachteil auf, daß Wartungsarbeiten insbesondere am Eingangsbereich der hydraulischen Fördervorrichtung nur bei einer druckluftgestützten Ortsbrust unter entsprechend erschwerten und personengefährdenden Bedingungen möglich ist.DE 37 41 460 C2 is a shield driving device known, via a screw conveyor flanged to a baffle and also flanged to the diving wall hydraulic conveyor. This for Mining operation with supports for the working face using earth pressure, compressed air or support fluid set up shield jacking device has a screw opening closure device in order to the screw conveyor device in a liquid-assisted mining operation to empty and to apply compressed air, so that a screw conveyor tube as a pressure chamber for Compensation of pressure fluctuations in the support fluid is used. With this device is a mining operation with supports Face can be carried out using earth pressure or supporting fluid, however, it has the disadvantage that maintenance work in particular at the entrance to the hydraulic conveyor only with a compressed air-supported working face under accordingly difficult and dangerous conditions is possible.

Darüber hinaus beschreibt die DE 42 13 987 A1 eine Schildvortriebseinrichtung für raschen Wechsel zwischen flüssigkeitsgestützten Abbaubetrieb und erddruckgestützter Ortsbrust. Eine Anordnung für die Erhaltung des Atmosphärendrucks im Ringraum (Tauchwandverschlußvorrichtung) und somit auch die genaue Anordnung der Schneckenöffnungsverschlußvorrichtung ist nicht entnehmbar.In addition, DE 42 13 987 A1 describes a shield propulsion device for rapid changes between liquid-assisted mining operations and earth pressure-supported face. An arrangement for maintaining the atmospheric pressure in the annular space (baffle closure device) and thus also the exact arrangement of the screw opening closure device cannot be removed.

Der Erfindung liegt die Aufgabe zugrunde, eine Schildvortriebseinrichtung der eingangs genannten Art zu schaffen, bei der ein effektiver Abbaubetrieb mit flüssigkeitsgestützter oder erddruckgestützter Ortsbrust bei einer verhältnismäßig einfachen Zugänglichkeit der Ringraumabführvorrichtung möglich ist.The invention has for its object a shield jacking device to create the type mentioned at the outset effective mining operation with liquid-based or earth pressure-based Face with relatively easy access the annulus discharge device is possible.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß in die Tauchwand eine Schneckenöffnung eingebracht ist, die mit einer Schneckenöffnungsverschlußvorrichtung verschließbar ist, und daß sich an die Schneckenöffnung eine Schneckenfördervorrichtung zum unmittelbaren Abführen von Material aus dem Abbauraum anschließt, die den Ringraum quert.This object is achieved in that in the Baffle a screw opening is introduced, which with a Screw opening closure device is closable, and that a screw conveyor is attached to the screw opening for the direct removal of material from the Mining space connects that crosses the annulus.

Dadurch, daß die Schneckenfördervorrichtung den zu Wartungsarbeiten an der Ringraumabführvorrichtung und atmosphärischen Druck setzbaren Ringraum quert und gegenüber dem Abbauraum mit der Schneckenöffnungsverschlußvorrichtung verschließbar ist, läßt sich ein Betriebswechsel von einem flüssigkeitsgestützten zu einem erddruckgestützten Abbau und umgekehrt einfach und problemlos durchführen, wobei die besonders wartungsanfällige Ringraumabführvorrichtung in jeder Betriebsart nach entsprechenden Maßnahmen unter Atmosphärendruck zugänglich bleibt.The fact that the screw conveyor for maintenance work at the annulus discharge device and atmospheric Pressurizable annulus crosses and opposite the mining space can be closed with the screw opening closure device, can be changed from a liquid-based to earth pressure-based mining and vice versa simple and perform without any problems, the particularly maintenance-prone Annulus discharge device in each operating mode according to the corresponding Measures accessible under atmospheric pressure remains.

Bei einer zweckmäßigen Weiterbildung ist eine den Ringraum im Bereich der Ringraumabführvorrichtung und der Schneckenfördervorrichtung separierende Trennwand vorgesehen, um ein möglichst vollständiges Entfernen von im flüssigkeitsgestützten Abbaubetrieb durch die Tauchwandöffnung eingefördertes Material im Bereich der Ringraumabführvorrichtung zu konzentrieren.In an expedient development, the annulus is in the Area of the annulus discharge device and the screw conveyor device separating partition provided to a possible complete removal of in liquid-assisted mining operations material fed through the baffle opening to concentrate in the area of the annulus discharge device.

In einer zweckmäßigen Ausgestaltung ist eine verschließbare Überstromleitung vorgesehen, die nach Art einer kommunizierenden Röhre den Ringraum mit dem Abbauraum verbindet. Dabei ist es insbesondere zweckmäßig, ein Ende der Überstromleitung im oberen Bereich des Abbauraumes und das andere Ende im unteren Bereich des Ringraumes enden zu lassen, wobei das ringraumseitige Ende der Überstromleitung so tief angeordnet ist, daß es unterhalb des Pegels einer in den Ringraum eingetretenen Stützflüssigkeit liegt. Dadurch sind Druckschwankungen zwischen dem Abbauraum und dem Ringraum auch bei geschlossener Tauchwandverschlußvorrichtung und geschlossener Schneckenverschlußvorrichtung ausgleichbar.In an expedient embodiment, one is closable Overcurrent line provided in the manner of a communicating Tube connects the annulus with the mining space. It is it is particularly useful to have one end of the overcurrent line in the upper area of the mining area and the other end in the lower To end area of the annulus, the annulus side End of the overcurrent line is so deep that it below the level of a support fluid that has entered the annulus lies. This causes pressure fluctuations between the Removal space and the annular space even when the baffle closure device is closed and closed screw locking device compensable.

In einer Weiterbildung verfügt die Schneckenfördervorrichtung über eine in den Ringraum mündende Öffnung, die mit einer beispielsweise als Schieber ausgestalteten Verschlußvorrichtung verschließbar ist. Dadurch läßt sich bei einem der üblichen Förderrichtung im erddruckgestützten Abbaubetrieb entgegengesetzten Drehung der Schneckenfördervorrichtung bereits in die Schneckenfördervorrichtung eingebrachtes Material zum Abtransport mittels der Ringraumabführvorrichtung in den Ringraum hineinbefördern.In a further development, the screw conveyor device via an opening opening into the annulus, which is connected to a for example as a slide closure device is lockable. This allows one of the usual conveying directions opposite in earth pressure-assisted mining operations Rotation of the screw conveyor device already in the screw conveyor device material brought in for removal by means of convey the annulus discharge device into the annulus.

In einer weiteren Ausgestaltung ist an dem in Förderrichtung hinteren Ende der Schneckenfördervorrichtung eine Fluidzumischeinheit vorgesehen, die weiterhin an eine Fluidleitungsanordnung zur Zufuhr und Abfuhr eines Verdünnungsfluides angeschlossen ist. Dadurch läßt sich bei Übergang von einer erddruckgestützten Betriebsweise in einen flüssigkeitsgestützen Abbau das zunehmend dünner werdende, mit der Schneckenfördervorrichtung aus dem Abbauraum entfernte Material unter Aufrechterhaltung des Stützdruckes in dem Abbauraum unter weiterer Verdünnung hydraulisch abführen.In a further embodiment, in the conveying direction rear end of the screw conveyor a fluid proportioning unit provided that continue to a fluid line assembly connected to the supply and discharge of a dilution fluid is. This allows you to transition from an earth pressure based Operating in a liquid-assisted mining that increasingly thinning with the screw conveyor Material removed from the quarry while maintaining the support pressure in the mining area with further dilution discharge hydraulically.

Weitere zweckmäßige Ausgestaltungen und Vorteile der Erfindung sind Gegenstand der abhängigen Ansprüche sowie der nachfolgenden Beschreibung von Ausführungsbeispielen unter Bezug auf die Figuren der Zeichnung. Es zeigen:

Fig. 1
in einer ortsbrustseitigen Stirnansicht ein Ausführungsbeispiel einer Schildvortriebseinrichtung gemäß der Erfindung mit abgenommenem Schneidrad,
Fig. 2
einen Schnitt entlang der Linie II-II gemäß Fig. 1,
Fig. 3
einen Schnitt entlang der Linie III-III gemäß Fig. 1,
Fig. 4
einen Horizontalschnitt durch die Schildvortriebseinrichtung gemäß Fig. 1 mit Blick auf eine Ringraumabführvorrichtung und eine Schneckenfördervorrichtung,
Fig. 5
eine ortsbrustseitige Stirnansicht auf ein weiteres Ausführungsbeispiel einer Schildvortriebseinrichtung gemäß der Erfindung mit abgenommenem Schneidrad,
Fig. 6
einen Horizontalschnitt durch die Schildvortriebseinrichtung gemäß Fig. 5 mit Blick auf eine Ringraumabführvorrichtung und eine Schneckenfördervorrichtung,
Fig. 7
in einer teilgeschnittenen Seitenansicht eine Schnekkenfördervorrichtung mit einer angeflanschten Fluidzumischeinheit und
Fig. 8
in einer teilgeschnittenen Seitenansicht ein weiteres Ausführungsbeispiel einer Schildvortriebseinrichtung gemäß der Erfindung mit einer unter Atmosphärendruck zugänglichen Schneckenfördervorrichtung.
Further expedient refinements and advantages of the invention are the subject of the dependent claims and the following description of exemplary embodiments with reference to the figures of the drawing. Show it:
Fig. 1
FIG. 2 shows an embodiment of a shield driving device according to the invention with the cutting wheel removed,
Fig. 2
2 shows a section along the line II-II according to FIG. 1,
Fig. 3
2 shows a section along the line III-III according to FIG. 1,
Fig. 4
1 with a view of an annular space discharge device and a screw conveyor device,
Fig. 5
2 shows a frontal view on the face of another embodiment of a shield propulsion device according to the invention with the cutting wheel removed,
Fig. 6
5 with a view of an annular space discharge device and a screw conveyor device,
Fig. 7
in a partially sectioned side view of a screw conveyor device with a flanged-on fluid mixing unit and
Fig. 8
In a partially sectioned side view a further embodiment of a shield driving device according to the invention with a screw conveyor accessible under atmospheric pressure.

Fig. 1 zeigt in einer ortsbrustseitigen Stirnansicht ein Ausführungsbeispiel einer Schildvortriebseinrichtung gemäß der Erfindung bei abgenommenem Schneidrad. Die Schildvortriebseinrichtung gemäß Fig. 1, die zu einem Betriebswechsel zwischen einem flüssigkeitsgestützten Abbaubetrieb und einem erddruckgestützten Abbaubetrieb ohne händischen Eingriff eingerichtet ist, weist zum Antrieb des in Fig. 1 nicht dargestellten Schneidrades einen zentrischen Schneidradantrieb 1 auf, der durch eine einen Abbauraum tunnelraumseitig begrenzende Tauchwand 2 durchgreift. Die Schildvortriebseinrichtung weist weiterhin einen Schildmantel 3 auf, der sich von dem Schneidrad die Tauchwand 2 umgebend in Richtung der Tunnelraumseite der Schildvortriebseinrichtung erstreckt. Bei dem in Fig. 1 dargestellten Ausführungsbeispiel ist der Abbauraum durch eine obere Tauchwandtür 4 und eine seitliche Tauchwandtür 5, die beide in die Tauchwand 2 eingebracht sind, zugänglich.Fig. 1 shows an embodiment in an end face side view a shield driving device according to the invention removed cutting wheel. The shield jacking device according to Fig. 1 leading to a change of operation between a liquid-based Mining operation and an earth pressure-assisted mining operation is set up without manual intervention, points to the drive of the cutting wheel, not shown in Fig. 1, a central Cutting wheel drive 1 on the one side through a mining space delimiting baffle 2 passes through. The shield jacking device also has a shield jacket 3, the surrounding the baffle 2 from the cutting wheel in the direction the tunnel space side of the shield tunneling device extends. At the embodiment shown in Fig. 1 is the mining space through an upper baffle door 4 and a side baffle door 5, both of which are introduced into the baffle 2, accessible.

Die Schildvortriebseinrichtung gemäß Fig. 1 weist eine Ringraumabführvorrichtung 6 auf, die in einem rückseitig der Tauchwand 2 gelegenen Ringraum angeordnet ist. Die Ringraumabführvorrichtung 6 liegt hinter einer vorzugsweise im unteren Bereich der Tauchwand 2 eingebrachten Tauchwandöffnung 7, die mit einer beispielsweise aus einem Tauchwandschieber 8 und einem Tauchwandschieberbetätigungszylinder 9 gebildeten Tauchwandverschlußvorrichtung druckdicht verschließbar ist. Die Ringraumabführvorrichtung 6 weist bei dem dargestellten Ausführungsbeispiel einem Rechen 10 vorgelagerte Steinbrecherbacken 11 auf, die zum Zerkleinern von größeren Steinen mittels Steinbrecherbetätigungszylindern 12 aufeinander zu bewegbar sind. Im Bereich der Tauchwandöffnung 7 angeordnete, mit einem Fluid beaufschlagbare Spüldüsen 13 dienen zum Entfernen von Material aus dem Bereich der Tauchwandöffnung 7, um ein abdichtendes Verschließen des Tauchwandschiebers 8 sicherzustellen. Hinter dem Rechen 10 ist ein in der Darstellung gemäß Fig. 1 nicht sichtbarer Ringraumstutzen einer in den Abbauraum und den Ringraum mündenden Saug/Druckleitungsanordnung als hydraulische Fördereinrichtung angeordnet.1 has an annulus discharge device 6 on the back of the baffle 2 located annulus is arranged. The annulus discharge device 6 lies behind one, preferably in the lower region of the Baffle 2 introduced baffle opening 7 with a for example from a baffle valve 8 and a baffle valve actuating cylinder 9 formed baffle closure device can be closed in a pressure-tight manner. The annulus discharge device 6 points in the illustrated embodiment a stone crusher jaw 11 upstream of a rake 10, those for crushing larger stones using stone breaker actuation cylinders 12 are movable towards each other. In the area the baffle opening 7, which can be acted upon by a fluid Flushing nozzles 13 are used to remove material the area of the baffle opening 7 to a sealing Ensure that the baffle valve 8 is closed. Behind the rake 10 is not one in the illustration according to FIG. 1 Visible annulus one in the mining space and Annulus suction / pressure line arrangement as hydraulic Conveyor arranged.

Weiterhin weist die Schildvortriebseinrichtung gemäß Fig. 1 eine Schneckenfördervorrichtung 14 auf, die ringraumseitig an der Tauchwand 2 angebracht ist. Die Schneckenfördervorrichtung 14 verfügt über eine drehbare Förderschnecke 15, die über eine in die Tauchwand 2 eingebrachte Schneckenöffnung 16 unmittelbar mit dem Abbauraum in Verbindung bringbar ist. Die Schneckenöffnung 16 ist mittels über Schneckenverschlußbetätigungszylinder 17 anlenkbare Schneckenverschlußschieber 18 als in diesem Ausführungsbeispiel abbauraumseitig angeordnete Bauteile einer Schneckenöffnungsverschlußvorrichtung vorzugsweise in hohem Maße druckdicht verschließbar.Furthermore, the shield driving device according to FIG. 1 has a Screw conveyor 14 on the annulus side on the Baffle 2 is attached. The screw conveyor device 14 has a rotatable screw conveyor 15, which has a in the Baffle 2 introduced screw opening 16 directly with the mining space can be connected. The screw opening 16 is by means of a worm lock actuating cylinder 17 articulated screw closure slide 18 as in components arranged in this embodiment a screw opening closure device preferably in highly pressure-tight closable.

Bei dem Ausführungsbeispiel gemäß Fig. 1 ist zwischen der Ringraumabführvorrichtung 6 und der Schneckenfördervorrichtung 14 eine Trennwand 19 in den Ringraum eingebracht, die sich den Ringraum unterteilend von dem Schildmantel 3 bis zu einer Kapselung des Schneidradantriebes 1 erstreckt. In den Abbauraum mündet ein Abbauraumstutzen 20 einer zur Beaufschlagung des Abbauraums mit Fluid vorgesehenen Saug/Druckleitungsanordnung. 1 is between the Annulus discharge device 6 and the screw conveyor 14 introduced a partition 19 into the annular space, which is the Dividing the annular space from the shield casing 3 to an encapsulation of the cutting wheel drive 1 extends. In the mining room opens a mining space 20 one to act on Mining space provided with fluid suction / pressure line arrangement.

Weiterhin verfügt die Schildvortriebseinrichtung gemäß Fig. 1 über eine mittels einer in Fig. 1 nicht dargestellten Absperrvorrichtung druckdicht verschließbare Überstromleitung 21, die zum einen mit einem im oberen Bereich der Tauchwand 2 angeordneten Abbauraumende 22 in den Abbauraum und mit einem im unteren Bereich des Ringraumes mündenden Ringraumende 23 eine strömungsmäßige Verbindung zwischen dem Abbauraum und dem Ringraum schafft. Vorzugsweise ist das Abbauraumende 22 im Bereich des höchsten Abschnittes des Abbauraumes und das Ringraumende 23 wenigstens unterhalb der Mittelhorizontalen der Schildvortriebseinrichtung angeordnet, so daß sichergestellt ist, daß das Ringraumende 23 bei einem flüssigkeitsgestützten Vortrieb unterhalb eines Pegels 24 einer in den Ringraum eingetretenen Stützflüssigkeit 25 liegt. Dadurch sind Druckunterschiede zwischen dem Abbauraum und dem Ringraum auch bei geschlossenem Tauchwandschieber 8 und geschlossenen Schneckenverschlußschiebern 18 ausgleichbar.Furthermore, the shield driving device according to FIG. 1 has a by means of a shut-off device, not shown in Fig. 1 pressure-tight lockable overcurrent line 21, the one with a mining space end arranged in the upper region of the baffle 2 22 in the mine and with one in the bottom Area of the annulus opening 23 end of a flow Connection between the mining space and the Creates annulus. Preferably, the end of the space 22 is in Area of the highest section of the mining area and that Annulus end 23 at least below the central horizontal of the Shield driving device arranged so that it is ensured that the annular space end 23 with a liquid-assisted propulsion below a level 24 one that has entered the annulus Support liquid 25 is. This causes pressure differences between the mining space and the annulus even when closed Baffle slide 8 and closed screw lock slide 18 compensable.

Fig. 2 zeigt die Schildvortriebseinrichtung gemäß Fig. 1 in einem Schnitt entlang der Linie II-II gemäß Fig. 1. In der Darstellung gemäß Fig. 2 ist ein tunnelraumseitig hinter dem Rechen 10 mündender, in den Ringraum 26 hineinragender Ringraumstutzen 27 der zur Beaufschlagung des Ringraumes 26 und des Abbauraumes mit Stützflüssigkeit vorgesehenen Saug/Druckleitungsanordnung zu erkennen. Der Ringraumstutzen 27 dient der Abfuhr von im flüssigkeitsgestützten Abbaubetrieb von dem Abbauraum in den Ringraum 26 eingetretenen Material. Weiterhin ist in Fig. 2 das in Fig. 1 nicht dargestellte Schneidrad 28 zu sehen, das ebenso wie die Tauchwand 2 mit Knetarmen 29 zum Durchmischen der beim erddruckgestützen Abbaubetrieb in dem Abbauraum vorliegenden breiartigen Substanz ausgestattet ist.FIG. 2 shows the shield driving device according to FIG. 1 in one Section along the line II-II of FIG. 1. In the illustration 2 is a tunnel room side behind the rake 10 Mouthpiece, protruding into the annular space 26 27 to act upon the annular space 26 and the extraction space provided with support fluid suction / pressure line arrangement to recognize. The annular space connector 27 is used for removal of in the liquid-assisted mining operation from the mining room material that has entered the annular space 26. Furthermore, in FIG. 2 to see the cutting wheel 28, not shown in FIG as well as the baffle 2 with kneading arms 29 for mixing the earth pressure-assisted mining operation in the mining room present mush-like substance is equipped.

Weiterhin sind in Fig. 2 eine Personenschleuse 30 mit einer in den Ringraum 26 mündenden Ringraumtür 31, eine den Ringraum 26 tunnelraumseitig abschließende Druckwand 32, an der Druckwand 32 angreifende Vortriebspressen 33, ein mittig angeordneter Erektor 34, ein sich an den Schildmantel 3 anschließender Schildschwanz 35 sowie Tübbinge 36 zur Auskleidung des Tunnelraumes zu erkennen.Furthermore, a security gate 30 with a in the Annular space door 31 opening out, annulus 26 Pressure wall 32 closing on the tunnel room side, on the pressure wall 32 attacking jacking presses 33, one in the middle Erector 34, a shield tail adjoining the shield jacket 3 35 and segments 36 for lining the tunnel space to recognize.

Fig. 3 zeigt einen Schnitt der Schildvortriebseinrichtung gemäß Fig. 1 entlang der in Fig. 1 dargestellten Linie III-III mit der Schnekkenfördervorrichtung 14. Vorzugsweise ist die Förderschnecke 15 der Schneckenfördervorrichtung 14 mit einem Vorderabschnitt vor die Tauchwand 2 vorschiebbar, so daß sie in den Abbauraum eingreift, sowie zum Schließen der Schneckenverschlußschieber 18 tunnelraumseitig hinter die Tauchwand 2 rückziehbar. Die Förderschnecke 15 läuft in einem den Ringraum 26 querenden Förderschneckenführungsrohr 37, an dessen tunnelraumseitigen Ende eine Entnahmeeinheit 38 zur Abfuhr des durch die Förderschnecke 15 aus dem Abbauraum abgeführten Materiales unter im wesentlichen Atmosphärendruck angeschlossen ist.Fig. 3 shows a section of the shield driving device according to Fig. 1 along the line III-III shown in Fig. 1 with the screw conveyor 14. Preferably, the screw conveyor is 15 the screw conveyor 14 with a front portion the baffle 2 can be advanced so that it is in the excavation space intervenes, as well as to close the screw lock slide 18 retractable behind the baffle 2 on the tunnel room side. The Screw conveyor 15 runs in an end that crosses the annular space 26 Conveyor screw guide tube 37 on the tunnel space side End of a removal unit 38 for removing the through the screw conveyor 15 material removed from the extraction space under in essential atmospheric pressure is connected.

Fig. 4 zeigt in einem Horizontalschnitt durch die Schildvortriebseinrichtung gemäß Fig. 1 die Ringraumabführvorrichtung 6 und die Schneckenfördervorrichtung 14 in Draufsicht. Aus Fig. 4 ist deutlich erkennbar, daß der Ringraumstutzen 27 in den Ringraum 26 und der Abbauraumstutzen 20 in den Abbauraum 39 münden. Der Abbauraumstutzen 20 und der Ringraumstutzen 27 sind bei diesem Ausführungsbeispiel an eine gemeinsame Saug/Druckleitung 40 angeschlossen.Fig. 4 shows a horizontal section through the shield driving device 1, the annulus discharge device 6 and Screw conveyor device 14 in plan view. From Fig. 4 is clearly recognizable that the annular space connector 27 in the annular space 26 and the extraction space socket 20 open into the extraction space 39. The extraction space socket 20 and the annular space socket 27 are at this embodiment to a common suction / pressure line 40 connected.

Ein Betriebswechsel von einem flüssigkeitsgestützen Abbaubetrieb in einen erddruckgestützten Abbaubetrieb wird wie folgt durchgeführt. Im flüssigkeitsgestützten Abbaubetrieb ist die Ringraumabführvorrichtung 6 bei geöffnetem Tauchwandschieber 8 in Betrieb und die Schneckenöffnung 16 mit den Schneckenverschlußschiebern 18 geschlossen. Der Tauchwandschieber 8 wird nunmehr zum Verschließen der Tauchwandöffnung 7 verschoben und die Schneckenverschlußschieber 18 werden geöffnet. Mit zunehmendem Anfall von in der Regel schluffigen Erdreich in den Abbauraum 39 vollzieht sich mit zunehmender Verdickung des in dem Abbauraum 39 vorhandenen Materiales der Übergang in den erddruckgestützten Abbaubetrieb, bei dem vorzugsweise mit vorgeschobener Förderschnecke 15 das breiige Material aus dem Abbauraum 39 abgefördert wird.A change of operation from a liquid-assisted mining operation in an earth pressure-assisted mining operation is carried out as follows. The annular space discharge device is in the liquid-assisted mining operation 6 with the baffle valve open 8 in Operation and the screw opening 16 with the screw lock slides 18 closed. The baffle valve 8 is now moved to close the baffle opening 7 and the screw lock slides 18 are opened. With increasing amount of usually silty soil in the Dismantling space 39 takes place with increasing thickening of the in the mining space 39 existing material the transition to earth pressure-assisted mining operation, preferably with advanced screw conveyor 15 the pulp material from the Mining space 39 is removed.

Bei einem Wechsel von einem erddruckgestützten Abbaubetrieb mit in Betrieb befindlicher Schneckenfördervorrichtung 14 in einen flüssigkeitsgestützten Abbaubetrieb wird bei rückgezogener Förderschnecke 15 die Schneckenöffnung 16 mittels der Schneckenverschlußschieber 18 geschlossen und der Tauchwandschieber 8 mit Inbetriebnahme der Ringraumabführvorrichtung 6 geöffnet.When changing from an earth pressure-assisted mining operation with the screw conveyor 14 in operation into one liquid-assisted mining operation is withdrawn Screw conveyor 15, the screw opening 16 by means of the screw lock slide 18 closed and the baffle valve 8 opened with start-up of the annular space discharge device 6.

Bei beiden Betriebswechseln dienen der Abbauraumstutzen 29 und der Ringraumstutzen 20 zur Zufuhr und Abfuhr von Fluid entsprechender Konsistenz in den Ringraum 26 beziehungsweise den Abbauraum 39, um die Konsistenz des abzufördernden Materiales möglichst schnell an die Betriebsbedingungen der Ringraumabführvorrichtung 6 beziehungsweise der Schneckenfördervorrichtung 14 anzupassen. Vorzugsweise sind zu diesem Zweck noch weitere in den Figuren nicht dargestellte Leitungen vorgesehen.In the case of both changes of operation, the extraction space socket 29 and the annular space connector 20 corresponding to the supply and discharge of fluid Consistency in the annulus 26 and the Mining space 39 to ensure the consistency of the material to be removed as quickly as possible to the operating conditions of the annulus discharge device 6 or the screw conveyor 14 to adjust. Others are preferred for this purpose Lines not shown in the figures are provided.

Auf diese Weise ist ein nahezu unterbrechungsfreier Betriebswechsel zwischen flüssigkeitsgestütztem Abbaubetrieb und erddruckgestütztem Abbaubetrieb frei von händischen Eingriffen geschaffen, so daß mit der Schildvortriebseinrichtung auch bei wechselnden Abbaubedingungen eine hohe Vortriebsrate erzielt wird.This is an almost uninterrupted change of business between liquid-assisted mining operations and earth pressure-assisted mining operation free of manual intervention created so that with the shield jacking device changing mining conditions achieved a high rate of advance becomes.

Fig. 5 zeigt ein weiteres Ausführungsbeispiel einer Schildvortriebseinrichtung gemäß der Erfindung in einer abbauraumseitigem Stirnansicht ohne Schneidrad, mit der effiziente Betriebswechsel zwischen einem flüssigkeitsgestützten Abbaubetrieb und einem erddruckgestützten Abbaubetrieb durchführbar sind, wobei sich bei den Schildvortriebseinrichtungen gemäß Fig. 1 und Fig. 5 entsprechende Bauelemente mit den gleichen Bezugszeichen versehen und im weiteren nicht näher erläutert sind. Bei der Schildvortriebseinrichtung gemäß Fig. 5 weist die Schneckenfördervorrichtung 14 einen Ringraumschieber 41 auf, mit dem eine Ringraumöffnung zwischen der Förderschnecke 15 und dem Ringraum 26 öffenbar und verschließbar ist. Bei der Schildvortriebseinrichtung gemäß Fig. 5 ist der Ringraum 26 im Bereich zwischen der Ringraumabführvorrichtung 6 und der Schneckenfördervorrichtung 14 geöffnet.5 shows a further exemplary embodiment of a shield driving device according to the invention in a mine side Front view without cutting wheel, with the efficient change of operation between a liquid-assisted mining operation and a earth pressure-assisted mining operations are feasible in the shield driving devices according to FIGS. 1 and 5 corresponding components with the same reference numerals provided and are not explained in more detail below. In the 5 has the screw conveying device 14 an annular space slide 41 with which one Annulus opening between the screw conveyor 15 and the Annulus 26 can be opened and closed. At the shield jacking device 5, the annular space 26 is in the area between the annular space discharge device 6 and the screw conveyor device 14 open.

Fig. 6 zeigt in einem Horizontalschnitt durch die Schildvortriebseinrichtung gemäß Fig. 5 eine Draufschnitt auf die Ringraumabführvorrichtung 6 und die Schneckenfördervorrichtung 14. Aus Fig. 6 ist deutlich erkennbar, daß der Ringraum 26 in dem Bereich zwischen der Ringraumabführvorrichtung 6 und der Schneckenfördervorrichtung 14 ununterbrochen ist und mit dem Ringraumschieber 41 die in den Ringraum 26 mündende Ringraumöffnung in dem Förderschneckenführungsrohr 37 druckdicht verschließbar ist.6 shows a horizontal section through the shield driving device 5 is a plan view of the annulus discharge device 6 and the screw conveyor device 14. Off Fig. 6 is clearly seen that the annular space 26 in the area between the annular space discharge device 6 and the screw conveyor device 14 is continuous and with the annulus slide 41 the annular space opening opening into the annular space 26 in the screw conveyor tube 37 can be closed in a pressure-tight manner is.

Zum Übergang von einem erddruckgestützten in einen flüssigkeitsgestützten Abbaubetrieb ist bei abgekoppelter Entnahmeeinheit 38 der Ringraumschieber 41 öffenbar, so daß das breiartige, durch die Förderschnecke 15 aus dem Abbauraum 39 abgeförderte Material in den Ringraum 26 ausgeworfen und der in Betrieb genommenen Ringraumabführvorrichtung 6 zum Abtransport zugeführt wird.For the transition from an earth pressure-based to a liquid-based Dismantling operation is with the extraction unit 38 disconnected the annular space slide 41 can be opened, so that the mush-like, by the screw conveyor 15 is removed from the extraction space 39 Material ejected into the annular space 26 and in operation taken annulus discharge device 6 for removal is fed.

Um die Schneckenfördervorrichtung 14 nach Einstellen des erddruckgestützten Abbaubetriebes zu entleeren, wird der Ringraumschieber 41 geöffnet und die Förderschnecke 15 entgegen der Drehrichtung im erddruckgestützten Abbaubetrieb gedreht, so daß noch in dem Förderschneckenführungsrohr 37 vorhandenes verhältnismäßig breiiges Material in den Ringraum 26 entleert wird. Dies kann beispielsweise bei einem vollständig mit Druckluft gefüllten Ringraum 26 erfolgen, so daß eine im wesentlichen vollständige Entleerung des Förderschneckenführungsrohres 37 erzielt wird.To the screw conveyor 14 after setting the earth pressure based To empty the mining operation, the annular space valve 41 opened and the screw conveyor 15 against Direction of rotation in earth pressure-assisted mining operation, so that still existing in the screw conveyor tube 37 relatively mushy material emptied into the annular space 26 becomes. This can be the case, for example, with compressed air filled annulus 26 take place so that a substantially complete emptying of the screw conveyor tube 37 is achieved.

Fig. 7 zeigt in einer entlang der Linie VII-VII gemäß Fig. 5 geschnittenen Seitenansicht insbesondere die Schneckenfördervorrichtung 14 einer erfindungsgemäßen Schildvortriebseinrichtung, bei der vorzugsweise an deren tunnelraumseitigen Ende eine Fluidzumischeinheit 42 angeflanscht ist. Die Fluidzumischeinheit 42 verfügt über einen Mischbehälter 43, der über einen Mischbehälterschieber 44 mit der Förderschnecke 15 in strömungsmäßige Verbindung bringbar ist. Weiterhin sind an den Mischbehälter 43 eine Mischfluidzuführleitung 45 und eine Mischfluidabführleitung 46 angesetzt, die in den Mischbehälter 43 münden. Mittels der Fluidzumischeinheit 42 ist bei einem Übergang von einem erddruckgestützten Abbaubetrieb in einen flüssigkeitsgestützten Abbaubetrieb ein Weiterbetrieb der Förderschnecke 15 auch bei allmählich durch den Flüssigkeitszusatz dünner werdendem Material ermöglicht, indem bei deaktivierter Entnahmeeinheit 38 die Förderschnecke 15 Material in den Mischbehälter 43 fördert und dieses Material unter Verdünnung mit dem in der Mischfluidzuführleitung 45 zugeführten Mischfluides und Abfuhr über die Mischfluidabführleitung 46 solange abtransportiert wird, bis die Ringraumabführvorrichtung 6 effizient in Betrieb gesetzt werden kann.Fig. 7 shows in a section along the line VII-VII of FIG. 5 Side view in particular the screw conveyor 14 a shield driving device according to the invention, at the one preferably at the end of the tunnel space Fluid admixing unit 42 is flanged. The fluid proportioning unit 42 has a mixing container 43, which has a mixing container slide 44 with the screw conveyor 15 in flow Connection can be made. Furthermore, the mixing container 43, a mixed fluid supply line 45 and a mixed fluid discharge line 46 set, which open into the mixing container 43. By means of the fluid admixing unit 42, at a transition from an earth pressure-based mining operation into a liquid-based one Mining operation continued operation of the screw conveyor 15 even as the liquid additive gradually thins out Material enables by with the removal unit deactivated 38 the screw conveyor 15 material into the mixing container 43 promotes and dilutes this material with that in the Mixed fluid supply line 45 mixed fluid supply and discharge is transported away via the mixed fluid discharge line 46 as long as until the annular space discharge device 6 is put into operation efficiently can be.

Bei der Schildvortriebseinrichtung gemäß Fig. 1 ist beim anhand Fig. 5 und Fig. 6 erläuterten Übergang von einem erddruckgestützten in einen flüssigkeitsgestützten Abbaubetrieb bei geöffnetem Ringraumschieber 41 und abgekoppelter Entnahmeeinheit 38 der Mischbehälterschieber 44 zu schließen.1 is based on Fig. 5 and Fig. 6 explained transition from an earth pressure-based in a liquid-assisted mining operation with the open Annulus slide 41 and uncoupled removal unit 38 to close the mixing valve slide 44.

Fig. 8 zeigt in einer teilgeschnittenen Seitenansicht ein weiteres Ausführungsbeispiel einer Schildvortriebseinrichtung gemäß der Erfindung mit einer Schneckenfördervorrichtung 14, die unter Atmosphärendruck zugänglich ist, wobei sich bei den Ausführungsbeispielen gemäß Fig. 7 und Fig. 8 entsprechende Bauelemente mit gleichen Bezugszeichen versehen und im folgenden nicht mehr näher erläutert sind. Zu diesem Zweck ist ein Ringraumschneckenverschlußschieber 47 als ringraumseitig angeordnetes Bauteil einer Schneckenöffnungsverschlußvorrichtung vorgesehen, mit dem zusätzlich zu den abbauraumseitig vorgesehenen Schneckenverschlußschiebern 18 der Schneckenöffnungsverschlußvorrichtung die Schneckenöffnung 16 zuverlässig druckdicht verschließbar ist. Die Schneckenfördervorrichtung 14 ist lösbar an der Tauchwand 2 angebracht und mittels eines Schneckenfördervorrichtungsrückzugszylinders 48 vollständig ringraumseitig hinter die Tauchwand 2 rückziehbar.Fig. 8 shows another in a partially sectioned side view Embodiment of a shield driving device according to the Invention with a screw conveyor 14, the under Atmospheric pressure is accessible, with the embodiments 7 and FIG. 8 corresponding components provided with the same reference numerals and in the following are no longer explained. For this purpose there is an annulus screw slide valve 47 arranged as an annulus side Component of a screw opening closure device provided with the provided in addition to the extraction room side Screw lock slides 18 of the screw opening lock device the screw opening 16 reliably can be closed in a pressure-tight manner. The screw conveyor 14 is detachably attached to the baffle 2 and by means of a screw conveyor retraction cylinder 48 completely retractable behind the baffle 2 on the annulus side.

Um beispielsweise Reparaturarbeiten an der Förderschnecke 15 vorzunehmen, wird die Förderschnecke 15 zurückgezogen, und die Schneckenverschlußschieber 18 werden geschlossen. Vorzugsweise befindet sich aus Sicherheitsgründen der Ringraum 26 unter Druckluft, um Undichtigkeiten der Schneckenverschlußschieber 18 auszugleichen. Dann wird die Schneckenfördervorrichtung 14 von der Tauchwand 2 gelöst, und der Ringraumverschlußschieber 47 sowie der Tauchwandschieber 8 werden ebenfalls geschlossen. Anschließend wird der Abbauraum 39 zum Abstützen der Ortsbrust mit einem unter Druck gesetzten Fluid gefüllt, und der Ringraum 26 wird unter Atmosphärendruck gesetzt. Nunmehr ist neben der Ringraumabführvorrichtung 6 auch die Schneckenfördervorrichtung 15 unter Atmosphärendruck vom Ringraum 26 her zugänglich.For example, to carry out repair work on the screw conveyor 15 make, the screw conveyor 15 is withdrawn, and the Screw closure slide 18 are closed. Preferably For safety reasons, the annular space 26 is located below Compressed air to prevent leaks in the screw closure slide 18 balance. Then the screw conveyor 14 of the baffle 2 released, and the annulus slide valve 47 and the baffle slide 8 are also closed. Then the excavation space 39 is used to support the working face filled with a pressurized fluid, and the Annulus 26 is placed under atmospheric pressure. Now is in addition to the annular space discharge device 6 and the screw conveyor device 15 under atmospheric pressure from the annular space 26 accessible from here.

Es versteht sich, daß bei zuverlässig druckdicht verschließbaren Schneckenverschlußschiebern 18 und lösbarer Befestigung einer rückziehbaren Schneckenförderrichtung 14 an der Tauchwand 2 dieses Ziel ebenfalls erreichbar ist, allerdings wird aus Sicherheitsgründen die Lösung mit einem Ringraumschneckenverschlußschieber 47 bevorzugt.It goes without saying that in the case of reliably pressure-tight closable Screw closure slide 18 and releasable attachment of a retractable screw conveying direction 14 on the baffle 2 this goal is also achievable, however, for security reasons the solution with an annular screw plug 47 preferred.

Claims (10)

  1. A shield driving apparatus comprising a baffle wall (2) which perpendicularly to the tunnel axis delimits a working space (39), an annular space (26) which is disposed at the rear of the baffle wall (2) and which is closed off perpendicularly to the tunnel axis at the tunnel space side by a pressure wall (32), and an annular space clearance device (6) which is arranged in the annular space (26) behind a baffle wall opening (7) which is provided in the baffle wall (2) and which is closable with a baffle wall closure device (8, 9) so that material which passes into the annular space (26) from the working space (39) can be cleared away, characterised in that provided in the baffle wall (2) is a screw opening (16) which is closable with a screw opening closure device (17, 18, 47) and that a screw conveyor device (14) which passes through the annular space (26) adjoins the screw opening (16) for directly clearing material out of the working space (39).
  2. A shield driving apparatus according to claim 1 characterised in that there is provided a transfer conduit (21) which connects the working space (39) and the annular space.
  3. A shield driving apparatus according to claim 2 characterised in that a working space end (22) of the transfer conduit (21) opens in the upper region of the working space (39) and an annular space end (23) of the transfer conduit (21) opens in the lower region of the annular space (26).
  4. A shield driving apparatus according to one of claims 1 to 3 characterised in that disposed between the annular space clearance device (6) and the screw conveyor device (14) is a partition (19) which subdivides the annular space (26).
  5. A shield driving apparatus according to one of claims 1 to 3 characterised in that the screw conveyor device (14) has an annular space opening which opens into the annular space (26) and which is closable with an annular space closure device (41).
  6. A shield driving apparatus according to claim 5 characterised in that a fluid admixing unit (42) is flange-mounted to the screw conveyor device (14) and communicates on the one hand with the screw conveyor device (14) and on the other hand with a fluid admixing conduit arrangement (45, 46).
  7. A shield driving apparatus according to one of claims 1 to 6 characterised in that there is provided a number of suction/pressure conduits (20, 40) which open into the working space (39).
  8. A shield driving apparatus according to one of claims 1 to 7 characterised in that there is provided a number of suction/pressure conduits (27, 40) which open into the annular space (26).
  9. A shield driving apparatus according to one of claims 1 to 8 characterised in that the screw conveyor device (14) is releasably secured to the baffle wall (2) and when the screw conveyor device (14) is released the annular space (26) is closable in pressure-tight relationship with respect to the working space (39) with the screw opening closure device (17, 18, 47).
  10. A shield driving apparatus according to claim 9 characterised in that the screw opening closure device for pressure-tight closure integrity has at least one closure slider (47) arranged at the annular space side.
EP97111226A 1997-07-03 1997-07-03 Driving shield Expired - Lifetime EP0889199B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AT97111226T ATE196527T1 (en) 1997-07-03 1997-07-03 SHIELD PROPULSION DEVICE
DE59702382T DE59702382D1 (en) 1997-07-03 1997-07-03 Shield jacking device
EP97111226A EP0889199B1 (en) 1997-07-03 1997-07-03 Driving shield
PT97111226T PT889199E (en) 1997-07-03 1997-07-03 DEVICE FOR ADVANCED DEW PUNCH FOR TUNNELS
ES97111226T ES2152600T3 (en) 1997-07-03 1997-07-03 TUNNEL EQUIPMENT WITH ADVANCE SHIELD.
GR20000402762T GR3035074T3 (en) 1997-07-03 2000-12-13 Driving shield

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97111226A EP0889199B1 (en) 1997-07-03 1997-07-03 Driving shield

Publications (2)

Publication Number Publication Date
EP0889199A1 EP0889199A1 (en) 1999-01-07
EP0889199B1 true EP0889199B1 (en) 2000-09-20

Family

ID=8227008

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97111226A Expired - Lifetime EP0889199B1 (en) 1997-07-03 1997-07-03 Driving shield

Country Status (6)

Country Link
EP (1) EP0889199B1 (en)
AT (1) ATE196527T1 (en)
DE (1) DE59702382D1 (en)
ES (1) ES2152600T3 (en)
GR (1) GR3035074T3 (en)
PT (1) PT889199E (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023109996B3 (en) 2023-04-20 2024-05-02 Herrenknecht Aktiengesellschaft Tunnel boring machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2218306T3 (en) * 2000-07-12 2004-11-16 Hochtief Aktiengesellschaft TUNNEL MACHINE FOR ADVANCE BY SHIELD.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3741460C2 (en) * 1987-12-08 1995-06-22 Westfalia Becorit Ind Tech Shield propulsion device with a pressure chamber for receiving a gas cushion
DE4213987C2 (en) * 1992-04-29 2002-06-27 Herrenknecht Gmbh Conveying device for a shield tunneling machine for drilling tunnel sections
DE4225838C2 (en) * 1992-08-05 1995-02-02 Herrenknecht Gmbh Shield jacking device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023109996B3 (en) 2023-04-20 2024-05-02 Herrenknecht Aktiengesellschaft Tunnel boring machine

Also Published As

Publication number Publication date
PT889199E (en) 2001-03-30
ATE196527T1 (en) 2000-10-15
ES2152600T3 (en) 2001-02-01
GR3035074T3 (en) 2001-03-30
EP0889199A1 (en) 1999-01-07
DE59702382D1 (en) 2000-10-26

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