EP3418487B1 - Method for cleaning a drilling rod contaminated with pollutant and cleaning assembly for same - Google Patents

Method for cleaning a drilling rod contaminated with pollutant and cleaning assembly for same Download PDF

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Publication number
EP3418487B1
EP3418487B1 EP17177659.4A EP17177659A EP3418487B1 EP 3418487 B1 EP3418487 B1 EP 3418487B1 EP 17177659 A EP17177659 A EP 17177659A EP 3418487 B1 EP3418487 B1 EP 3418487B1
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EP
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Prior art keywords
cleaning
rinsing
kelly bar
connection piece
boring bar
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EP17177659.4A
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German (de)
French (fr)
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EP3418487A1 (en
Inventor
Walter IRRENHAUSER
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Bauer Spezialtiefbau GmbH
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Bauer Spezialtiefbau GmbH
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/006—Accessories for drilling pipes, e.g. cleaners
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B12/00—Accessories for drilling tools

Definitions

  • the boring bar may be prescribed to clean the boring bar from the contaminated soil material so that no pollutants can get into the environment via the boring bar. It may therefore be necessary to clean a boring bar after every drilling or at least when the work has been completed in a contaminated area.
  • the boring bar Due to the length of a boring bar of 10 m and more, it is usually necessary to disassemble the boring bar from the carrier device from the vertical working position and to place it in a horizontal cleaning position on the floor. In this horizontal position, the boring bar can be cleaned of adhering soil material, for example with a high-pressure cleaner. The rinsed floor material can be collected and disposed of. Finally, the cleaned boring bar can be reassembled on the mast of the drilling machine.
  • the invention has for its object to provide a method and a cleaning arrangement for cleaning a boring bar contaminated with pollutant, with which a boring bar can be cleaned particularly efficiently.
  • a preferred embodiment of the invention is that a cleaning hole is provided in the floor and the contaminated boring bar is inserted into the cleaning hole for rinsing off the adhering pollutant.
  • the cleaning hole in the floor can be used to collect the rinsed floor material.
  • the cleaning hole is preferably located in the contaminated area, so that an infiltration of cleaning liquid with pollutants into the already contaminated floor is no longer environmentally harmful.
  • the cleaning hole can have a depth of a few meters to a depth corresponding to the length of the boring bar and beyond.
  • the cleaning hole can preferably be a borehole which is lined with a support tube. In particular, the cleaning hole can be filled with cleaning fluid.
  • the boring bar can be moved vertically along the mast by means of the drilling device and inserted into the cleaning hole. An additional rinsing effect can be created by moving the boring bar vertically up and down. At the lower end of the cleaning hole, a settling area can be provided for receiving the rinsed floor material.
  • the boring bar can be a rigid guide bar, which is made in one piece or composed of several bar elements.
  • a Kelly bar is provided as the boring bar, which is composed of at least two tubular Kelly bar elements.
  • a Kelly bar is a telescopic one Boring bar, which has an outer kelly rod element and at least one inner kelly rod element.
  • the Kelly rod elements are at least partially telescoped out for cleaning. This creates a larger free or receiving space for receiving the cleaning fluid within the Kelly bar.
  • the Kelly rod elements can preferably also be telescoped as a whole, in which case the telescoped Kelly rod elements are retracted into a cleaning hole.
  • a rinsing device is provided with a rinsing nozzle, the rinsing nozzle is attached to an upper side of the boring bar in the case of a vertical boring bar, and cleaning liquid can be supplied through the rinsing device via the rinsing nozzle, through which the boring bar can be rinsed from above is.
  • the cleaning arrangement according to the invention is designed in particular to carry out the method described above.
  • the advantages described above can thus be achieved accordingly.
  • a cleaning hole is provided in the floor into which at least some of the boring bar can be inserted, and that the boring bar can be rinsed with cleaning liquid in the cleaning hole.
  • the rinsing effect in the cleaning hole can be further enhanced by moving the boring bar up and down in the cleaning hole filled with cleaning liquid.
  • the rinsing device and / or a discharge device for removing cleaning liquid each have at least one pump.
  • only one flushing device with a pump can also be provided, the cleaning liquid seeping away with the flushed contaminated floor material in the surrounding floor or in the cleaning hole after the flushing if the place of cleaning is in a contaminated area.
  • the rinsing nozzle for the cleaning arrangement according to the invention can be designed in any manner, preferably with a plurality of outlet openings or adjustable outlet nozzles.
  • the flushing nozzle is designed in an arc shape with an outlet and an inlet to which a flushing hose is connected.
  • the flushing hose is preferably connected to the flushing device with the at least one pump.
  • a circulation system optionally with intermediate storage, for example in a tank or basin, can also be provided for the cleaning liquid, with the cleaned cleaning liquid being used again for a further rinsing process, in particular for pre-rinsing.
  • a final rinsing of the boring bar can then be carried out with a fresh cleaning liquid.
  • a connecting element for a lifting rope is attached to the rinsing nozzle.
  • the flushing nozzle can be conveyed up to the top of a boring bar on the mast by means of a hoisting rope, for example by means of an auxiliary winch on the mast of a drilling machine.
  • the lifting rope can also serve as a safety rope as well as for releasing the rinsing nozzle after the rinsing process has been completed.
  • FIG Fig. 1 A cleaning arrangement 10 according to the invention for cleaning a contaminated boring bar 20 on a construction machine 2 is schematically shown in FIG Fig. 1 refer to.
  • the construction machine 2 is designed as a drilling device. This has a carrier device 3 with a crawler track. On the carrier device 3, a vertically directed mast 4 is attached, on the front of which a drill drive 7, also called a power turret, is movably adjustable by means of a carriage.
  • a drill drive 7 also called a power turret, is movably adjustable by means of a carriage.
  • a boring bar 20 is inserted in a generally known manner and is mounted thereon.
  • the boring bar 20 is designed as a kelly bar with three kelly bar elements 27a, 27b and 27c arranged telescopically with respect to one another.
  • the boring bar 20 is suspended so that it can move relative to the mast 4 and the boring drive 7 via a main cable 5.
  • a drilling tool is attached to the underside of the boring bar 20, which in the exemplary embodiment shown is disassembled when cleaning the boring bar 20.
  • the construction machine 2 is moved to an intended cleaning hole 12, into which the boring bar 20 is at least partially inserted.
  • the drill drive 7 has assumed its lower position on the mast 4.
  • the Kelly rod elements 27a, 27b and 27c are telescoped out.
  • the cleaning hole 12 can be empty or already filled with a cleaning liquid.
  • the arc-shaped rinsing nozzle 30 is hooked onto an open top of the tubular boring bar 20, as can be seen in FIG Fig. 3 is shown.
  • the rinsing nozzle 30 has a plate-shaped support 38, with which the rinsing nozzle 30 can be placed on an upper edge of the boring bar 20.
  • the flushing nozzle 30 can be fastened to a holding device (not shown) on the boring bar 20 or the drilling drive 7 via a fastening element 37, so that it has a positional fixation in the flushing mode.
  • an eyelet-like connecting element 36 is provided on an upper side of the tubular body 32, into which hook hooks of the lifting cable 6 can be hooked.
  • the arrangement variant shown serves the flushing nozzle 30 for flushing an interior 22 of the tubular boring bar 20.
  • an outside 24 of the boring rod 20 can also be flushed from above.
  • the outside of the boring bar 20 can also be rinsed when the boring bar 20 is pulled upwards from the lifting platform on the rinsing device 40 by an operator using a hose or a corresponding high-pressure cleaner. Cleaning the outside 24 is also readily possible after the interior 22 has been rinsed in a horizontal position of the boring bar 20.
  • the cleaning arrangement 10 according to the invention and the cleaning method according to the invention can also be used in other construction machines 2 for civil engineering with comparable rod-shaped arrangements, for example in guide rods for trench wall cutters. These guide rods are partially designed for little or no rotary movements and can have a round or angular cross section.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

Description

Die Erfindung betrifft ein Verfahren und eine Reinigungsanordnung zum Reinigen einer mit Schadstoff kontaminierten Bohrstange.The invention relates to a method and a cleaning arrangement for cleaning a boring bar contaminated with pollutants.

In bestimmten Fällen ist es erforderlich, Bohrungen in mit Schadstoff kontaminierten Böden niederzubringen. Dies kann beispielsweise erforderlich sein, wenn etwa Gründungspfähle, insbesondere Bohrpfähle, auf alten Industriegeländen, Hafenbereichen, aufgelassenen Deponien, etc. erstellt werden müssen. Derartige Bohrungen können Tiefen von 5 m bis 30 m oder tiefer erreichen. Hierzu wird eine Bohrstange verwendet, welche selbst am unteren Ende ein Bohrwerkzeug umfasst oder damit versehen ist. Die Bohrstange ist an einem außerhalb des Bohrlochs angeordneten Trägergerät vertikal verfahrbar angeordnet und in der Regel drehend angetrieben. Das abgetragene Bodenmaterial wird in der Regel beim Bohren aus dem Bohrloch abtransportiert. Nach Abschluss der Bohrung wird die Bohrstange wieder aus dem Bohrloch entfernt, wobei jedoch mit Schadstoff kontaminiertes Bodenmaterial an der Bohrstange anhaften kann.In certain cases it is necessary to drill holes in soils contaminated with pollutants. This may be necessary, for example, if foundation piles, in particular bored piles, have to be built on old industrial sites, port areas, abandoned landfills, etc. Such holes can reach depths of 5 m to 30 m or deeper. For this purpose, a boring bar is used, which itself comprises or is provided with a drilling tool at the lower end. The boring bar is arranged so that it can move vertically on a carrier device arranged outside the borehole and is usually driven in a rotating manner. The removed soil material is usually removed from the borehole during drilling. After completion of the drilling, the boring bar is removed from the borehole again, but soil material contaminated with pollutants can adhere to the boring bar.

Abhängig vom Grad der Kontaminierung des zu bearbeitenden Bodens kann es vorgeschrieben sein, die Bohrstange von dem kontaminierten Bodenmaterial zu reinigen, so dass kein Schadstoff über die Bohrstange in die Umwelt gelangen kann. Es kann daher erforderlich sein, eine Bohrstange nach jeder Bohrung oder zumindest bei Abschluss der Arbeiten in einem kontaminierten Bereich zu reinigen.Depending on the degree of contamination of the soil to be worked, it may be prescribed to clean the boring bar from the contaminated soil material so that no pollutants can get into the environment via the boring bar. It may therefore be necessary to clean a boring bar after every drilling or at least when the work has been completed in a contaminated area.

Eine Schadstoffbelastung kann sich auch dadurch ergeben, dass die Bohrstange in eine belastete Bohr- oder Betonsuspension eintaucht. Aus der WO 2012/026874 A1 geht ein sogenanntes Spülbohrverfahren hervor, bei dem beim Bohren Bohrklein mittels einer Spülflüssigkeit, welche Bentonit und weitere Zusätze enthalten kann, aus dem Bohrloch abgefördert wird.Pollution can also result from the boring bar being immersed in a loaded drilling or concrete suspension. From the WO 2012/026874 A1 is the result of a so-called flush drilling method, in which drilling cuttings are removed from the borehole by means of a flushing liquid, which can contain bentonite and other additives.

Aufgrund der Länge einer Bohrstange von 10 m und mehr ist es dabei in der Regel erforderlich, die Bohrstange von dem Trägergerät aus der vertikalen Arbeitsposition zu demontieren und in eine horizontale Reinigungsposition am Boden zu verbringen. In dieser horizontalen Position kann die Bohrstange beispielsweise mit einem Hochdruckreiniger von anhaftendem Bodenmaterial befreit werden. Das abgespülte Bodenmaterial kann aufgefangen und entsorgt werden. Abschließend kann die gereinigte Bohrstange wieder am Mast des Bohrgeräts montiert werden.Due to the length of a boring bar of 10 m and more, it is usually necessary to disassemble the boring bar from the carrier device from the vertical working position and to place it in a horizontal cleaning position on the floor. In this horizontal position, the boring bar can be cleaned of adhering soil material, for example with a high-pressure cleaner. The rinsed floor material can be collected and disposed of. Finally, the cleaned boring bar can be reassembled on the mast of the drilling machine.

Allerdings sind die Montagearbeiten der mehrere Tonnen schweren Bohrstange zeit- und arbeitsintensiv. Auch ist das Reinigen einer liegenden Bohrstange mittels eines Hochdruckreinigers von einer Person problematisch, insbesondere wenn eine rohrförmige Bohrstange mit einem inneren Hohlraum zu reinigen ist. Innenbereiche einer rohrförmigen Bohrstange sind nur schwer und mit einem erheblichen Arbeits- und Zeitaufwand von anhaftendem Bodenmaterial zu reinigen. Zudem ist ein entsprechender Platzbedarf für die Lagerung der Bohrstange notwendig.However, the assembly work of the multi-ton boring bar is time-consuming and labor-intensive. The cleaning of a horizontal boring bar by means of a high-pressure cleaner by one person is also problematic, especially if a tubular boring bar with an inner cavity is to be cleaned. Inner areas of a tubular boring bar are difficult to clean from adhering soil material with a considerable amount of work and time. A corresponding space requirement is also required for the storage of the boring bar.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren und eine Reinigungsanordnung zum Reinigen einer mit Schadstoff kontaminierten Bohrstange anzugeben, mit welchem eine Bohrstange besonders effizient gereinigt werden kann.The invention has for its object to provide a method and a cleaning arrangement for cleaning a boring bar contaminated with pollutant, with which a boring bar can be cleaned particularly efficiently.

Die Aufgabe wird zum einen durch ein Verfahren mit den Merkmalen des Anspruchs 1 und zum anderen durch eine Reinigungsanordnung mit den Merkmalen des Anspruchs 10 gelöst. Bevorzugte Ausführungsformen der Erfindung sind in den abhängigen Ansprüchen angegeben.The object is achieved on the one hand by a method with the features of claim 1 and on the other hand by a cleaning arrangement with the features of claim 10. Preferred embodiments of the invention are specified in the dependent claims.

Gemäß der Erfindung ist ein Verfahren zum Reinigen einer mit Schadstoff kontaminierten Bohrstange vorgesehen, bei dem die Bohrstange in einer vertikalen Position angeordnet wird, ein Spülstutzen an einer Oberseite der Bohrstange angebracht wird und die Bohrstange mit einer Reinigungsflüssigkeit abgespült wird, welche über den Spülstutzen zugeführt wird.According to the invention, a method is provided for cleaning a boring bar contaminated with pollutants, in which the boring bar is arranged in a vertical position, a rinsing nozzle is attached to an upper side of the boring bar and the boring bar is rinsed off with a cleaning liquid which is supplied via the rinsing nozzle .

Eine Grundidee der Erfindung kann darin gesehen werden, eine Bohrstange nicht in einer horizontalen Position zu reinigen, sondern in einer vertikalen Position. Um diese Bohrstangen mit einer Länge von bis zu 10 m und mehr zu erreichen, kann nach der Erfindung an einer Oberseite einer im Wesentlichen vertikalen Bohrstange ein Spülstutzen angebracht werden, durch welchen Reinigungsflüssigkeit zugeführt werden kann. Die Reinigungsflüssigkeit kann vorzugsweise Wasser oder ein auf Wasser basierendes Fluid sein. Es können gegebenenfalls Tenside oder andere Zusätze vorgesehen sein, welche das Ablösen von Bodenmaterial unterstützen oder zur Behandlung und insbesondere Neutralisierung von Schadstoffen geeignet sind.A basic idea of the invention can be seen in not cleaning a boring bar in a horizontal position but in a vertical position. Around To achieve boring bars with a length of up to 10 m and more, according to the invention, a flushing nozzle can be attached to an upper side of a substantially vertical boring bar, through which cleaning liquid can be supplied. The cleaning liquid can preferably be water or a water-based fluid. If necessary, surfactants or other additives can be provided which support the detachment of soil material or are suitable for the treatment and in particular neutralization of pollutants.

Gemäß einem weiteren Aspekt der Erfindung kann so die Bohrstange in einer im Wesentlichen vertikalen Betriebsposition an dem Trägergerät verbleiben. Über den Spülstutzen, welcher auch als Spülglocke bezeichnet werden kann, erfolgt ein Abspülen des anhaftenden Schadstoffs, etwa aus dem Boden, der Stütz- oder Bohrsuspension oder einer abbindenden Suspension zum Bilden eines Gründungselements. Ein Abspülen der Innen- und/oder Außenseite der Bohrstange kann durch eine Zuführung von Reinigungsflüssigkeit durch eine Spülvorrichtung erfolgen. Hierdurch kann eine ausreichende Dekontamination bei geringem Personal- und Zeitaufwand erfolgen.According to a further aspect of the invention, the boring bar can thus remain in a substantially vertical operating position on the carrier device. The adhering pollutant is rinsed off, for example from the floor, the support or drilling suspension or a setting suspension to form a foundation element, via the rinsing nozzle, which can also be referred to as a rinsing bell. The inside and / or outside of the boring bar can be rinsed off by supplying cleaning liquid through a rinsing device. In this way, adequate decontamination can be carried out with little expenditure of personnel and time.

Eine bevorzugte Ausführungsform der Erfindung besteht darin, dass ein Reinigungsloch im Boden vorgesehen wird und die kontaminierte Bohrstange zum Abspülen des anhaftenden Schadstoffs in das Reinigungsloch eingefahren wird. Das Reinigungsloch im Boden kann dabei zum Auffangen des abgespülten Bodenmaterials dienen. Vorzugsweise befindet sich das Reinigungsloch im kontaminierten Bereich, so dass ein Einsickern von Reinigungsflüssigkeit mit Schadstoffen in den bereits kontaminierten Boden nicht weiter umweltbelastend ist. Das Reinigungsloch kann eine Tiefe von einigen Metern bis zu einer Tiefe entsprechend der Länge der Bohrstange und darüber hinaus aufweisen. Vorzugsweise kann das Reinigungsloch ein Bohrloch sein, welches mit einem Stützrohr ausgekleidet ist. Insbesondere kann das Reinigungsloch mit Reinigungsflüssigkeit gefüllt sein. Dabei kann die Bohrstange mittels des Bohrgerätes entlang des Mastes vertikal verfahren und in das Reinigungsloch eingefahren werden. Durch eine vertikale Auf- und Abwärtsbewegung der Bohrstange kann so ein zusätzlicher Spüleffekt erzeugt werden. Am unteren Ende des Reinigungslochs kann ein Absetzbereich zum Aufnehmen des abgespülten Bodenmaterials vorgesehen sein.A preferred embodiment of the invention is that a cleaning hole is provided in the floor and the contaminated boring bar is inserted into the cleaning hole for rinsing off the adhering pollutant. The cleaning hole in the floor can be used to collect the rinsed floor material. The cleaning hole is preferably located in the contaminated area, so that an infiltration of cleaning liquid with pollutants into the already contaminated floor is no longer environmentally harmful. The cleaning hole can have a depth of a few meters to a depth corresponding to the length of the boring bar and beyond. The cleaning hole can preferably be a borehole which is lined with a support tube. In particular, the cleaning hole can be filled with cleaning fluid. The boring bar can be moved vertically along the mast by means of the drilling device and inserted into the cleaning hole. An additional rinsing effect can be created by moving the boring bar vertically up and down. At the lower end of the cleaning hole, a settling area can be provided for receiving the rinsed floor material.

Grundsätzlich kann die Reinigungsflüssigkeit nach dem Abspülen mit dem abgespülten Bodenmaterial im Boden versickern, sofern sich der Reinigungsbereich in einem kontaminierten Bereich befindet. Insbesondere bei Verwendung eines Reinigungsloches ist es nach einer Weiterbildung der Erfindung vorteilhaft, dass Reinigungsflüssigkeit, vorzugsweise kontinuierlich, abgeführt wird.Basically, the cleaning liquid can seep away with the rinsed floor material after rinsing, provided that the cleaning area is in a contaminated area. In particular, when using a cleaning hole, it is advantageous according to a further development of the invention that cleaning liquid, preferably continuously, is removed.

Insbesondere besteht eine Weiterbildung der Erfindung darin, dass die abgeführte Reinigungsflüssigkeit einer Entsorgungseinrichtung und/oder einer Wiederaufbereitungseinrichtung zugeführt wird. Hierdurch kann auch insgesamt eine Schadstoffreduktion der Umwelt erreicht werden.In particular, a further development of the invention consists in that the removed cleaning liquid is fed to a disposal device and / or a reprocessing device. In this way, overall pollution reduction of the environment can be achieved.

Nach einer weiteren Ausführungsvariante des erfindungsgemäßen Verfahrens ist es vorteilhaft, dass der Spülstutzen mittels eines Hubseils entlang des Mastes eines Trägergeräts zur Oberseite der Bohrstange gefördert wird. Somit kann die Bohrstange insbesondere in der montierten Position am Mast des Bohrgerätes verbleiben. An dem Spülstutzen kann insbesondere eine Hakeneinrichtung angeordnet sein, mit welcher der Spülstutzen an einer Oberseite der Bohrstange lösbar befestigt werden kann. Insbesondere kann an der Oberseite der Bohrstange eine entsprechende Einrichtung zum Verhaken des Spülstutzens angebracht sein. Der Spülstutzen ist dabei mit einer Auslassöffnung so ausgebildet, dass die Reinigungsflüssigkeit möglichst großflächig über die Bohrstange strömt, so dass eine gute Abspülwirkung erreicht wird.According to a further embodiment variant of the method according to the invention, it is advantageous that the rinsing nozzle is conveyed to the top of the boring bar along the mast of a carrier device by means of a lifting rope. The boring bar can thus remain in the mounted position on the mast of the drilling device. In particular, a hook device can be arranged on the flushing nozzle, with which the flushing nozzle can be detachably attached to an upper side of the boring bar. In particular, a corresponding device for hooking the flush nozzle can be attached to the top of the boring bar. The rinsing nozzle is designed with an outlet opening in such a way that the cleaning liquid flows over the boring bar over the largest possible area, so that a good rinsing effect is achieved.

Besonders vorteilhaft ist es dabei, dass die Reinigungsflüssigkeit einem Innenraum der Bohrstange zugeführt wird. Somit kann insbesondere ein schwer zu reinigender Innenraum bei einer rohrförmigen Bohrstange zuverlässig von oben gespült werden.It is particularly advantageous that the cleaning liquid is supplied to an interior of the boring bar. In particular, an interior that is difficult to clean can be reliably rinsed from above in the case of a tubular boring bar.

Im Sinne der Erfindung ist eine Bohrstange allgemein als im Tiefbau eingesetzte Arbeits- oder Führungsstange bei Baumaschinen zu verstehen, wobei keine Beschränkung auf ein Bohren gegeben sein muss.For the purposes of the invention, a boring bar is generally to be understood as a working or guide bar used in civil engineering in construction machines, and there is no restriction to drilling.

Grundsätzlich kann die Bohrstange eine starre Führungsstange sein, welche einstückig oder aus mehreren Stangenelementen zusammengesetzt ist. Eine besonders vorteilhafte Verfahrensvariante besteht nach der Erfindung darin, dass als Bohrstange eine Kellystange vorgesehen wird, welche aus mindestens zwei rohrförmigen Kellystangenelementen zusammengesetzt ist. Eine Kellystange ist dabei eine austeleskopierbare Bohrstange, welche ein Außenkellystangenelement und mindestens ein Innenkellystangenelement aufweist. Durch eine Spülung von oben können diese ineinander angeordneten Kellystangenelemente besonderes gut gereinigt werden.In principle, the boring bar can be a rigid guide bar, which is made in one piece or composed of several bar elements. A particularly advantageous variant of the method according to the invention is that a Kelly bar is provided as the boring bar, which is composed of at least two tubular Kelly bar elements. A Kelly bar is a telescopic one Boring bar, which has an outer kelly rod element and at least one inner kelly rod element. By flushing from above, these Kelly rod elements arranged one inside the other can be cleaned particularly well.

Besonders zweckmäßig ist es dabei, dass zum Reinigen die Kellystangenelemente zumindest teilweise austeleskopiert werden. Hierdurch entsteht ein größerer Frei- oder Aufnahmeraum zum Aufnehmen der Reinigungsflüssigkeit innerhalb der Kellystange. Vorzugsweise können die Kellystangenelemente auch insgesamt austeleskopiert sein, wobei dann die austeleskopierten Kellystangenelemente in einem Reinigungsloch eingefahren sind.It is particularly expedient that the Kelly rod elements are at least partially telescoped out for cleaning. This creates a larger free or receiving space for receiving the cleaning fluid within the Kelly bar. The Kelly rod elements can preferably also be telescoped as a whole, in which case the telescoped Kelly rod elements are retracted into a cleaning hole.

Hinsichtlich einer Reinigungsanordnung wird die eingangs genannte Aufgabe dadurch gelöst, dass eine Spülvorrichtung mit einem Spülstutzen vorgesehen ist, der Spülstutzen bei vertikaler Bohrstange an einer Oberseite der Bohrstange angebracht ist und durch die Spülvorrichtung über den Spülstutzen Reinigungsflüssigkeit zuführbar ist, durch welche die Bohrstange von oben spülbar ist.With regard to a cleaning arrangement, the above-mentioned object is achieved in that a rinsing device is provided with a rinsing nozzle, the rinsing nozzle is attached to an upper side of the boring bar in the case of a vertical boring bar, and cleaning liquid can be supplied through the rinsing device via the rinsing nozzle, through which the boring bar can be rinsed from above is.

Die erfindungsgemäße Reinigungsanordnung ist insbesondere zum Durchführen des zuvor beschriebenen Verfahrens ausgebildet. Es können somit die zuvor beschriebenen Vorteile entsprechend erzielt werden.The cleaning arrangement according to the invention is designed in particular to carry out the method described above. The advantages described above can thus be achieved accordingly.

Bei einer erfindungsgemäßen Reinigungsanordnung ist vorgesehen, dass ein Reinigungsloch im Boden vorgesehen ist, in welches die Bohrstange zumindest mit einem Teil einfahrbar ist, und dass die Bohrstange in dem Reinigungsloch mit Reinigungsflüssigkeit spülbar ist. Die Spülwirkung in dem Reinigungsloch kann noch dadurch verstärkt werden, dass die Bohrstange in dem mit Reinigungsflüssigkeit gefüllten Reinigungsloch auf und ab bewegt wird.In the case of a cleaning arrangement according to the invention, it is provided that a cleaning hole is provided in the floor into which at least some of the boring bar can be inserted, and that the boring bar can be rinsed with cleaning liquid in the cleaning hole. The rinsing effect in the cleaning hole can be further enhanced by moving the boring bar up and down in the cleaning hole filled with cleaning liquid.

Weiterhin ist es nach einer Ausführungsvariante der erfindungsgemäßen Reinigungsanordnung vorteilhaft, dass die Spülvorrichtung und/oder eine Abführeinrichtung zum Abführen von Reinigungsflüssigkeit jeweils mindestens eine Pumpe aufweist. Insgesamt kann aber auch nur eine Spülvorrichtung mit einer Pumpe vorgesehen sein, wobei nach dem Spülen die Reinigungsflüssigkeit mit dem abgespülten kontaminierten Bodenmaterial im umgebenden Boden oder in dem Reinigungsloch versickert, wenn sich der Ort der Reinigung in einem kontaminierten Bereich befindet. Grundsätzlich kann der Spülstutzen für die erfindungsgemäße Reinigungsanordnung in einer beliebigen Weise ausgebildet sein, vorzugsweise mit mehreren Auslassöffnungen oder verstellbaren Austrittsdüsen. Besonders vorteilhaft ist es nach einer Weiterbildung der Erfindung, dass der Spülstutzen bogenförmig mit einem Auslass und einem Einlass ausgebildet ist, an welchem ein Spülschlauch angeschlossen ist. Der Spülschlauch ist dabei vorzugsweise mit der Spülvorrichtung mit der mindestens einen Pumpe verbunden. Gegebenenfalls kann auch eine Kreislaufführung, gegebenenfalls mit einer Zwischenspeicherung, etwa in einem Tank oder Becken, für die Reinigungsflüssigkeit vorgesehen sein, wobei wieder aufbereitete Reinigungsflüssigkeit für einen weiteren Spülvorgang, insbesondere für eine Vorspülung genutzt wird. Eine abschließende Endspülung der Bohrstange kann dann mit einer frischen Reinigungsflüssigkeit erfolgen.Furthermore, according to an embodiment variant of the cleaning arrangement according to the invention, it is advantageous that the rinsing device and / or a discharge device for removing cleaning liquid each have at least one pump. Overall, however, only one flushing device with a pump can also be provided, the cleaning liquid seeping away with the flushed contaminated floor material in the surrounding floor or in the cleaning hole after the flushing if the place of cleaning is in a contaminated area. In principle, the rinsing nozzle for the cleaning arrangement according to the invention can be designed in any manner, preferably with a plurality of outlet openings or adjustable outlet nozzles. According to a further development of the invention, it is particularly advantageous that the flushing nozzle is designed in an arc shape with an outlet and an inlet to which a flushing hose is connected. The flushing hose is preferably connected to the flushing device with the at least one pump. If appropriate, a circulation system, optionally with intermediate storage, for example in a tank or basin, can also be provided for the cleaning liquid, with the cleaned cleaning liquid being used again for a further rinsing process, in particular for pre-rinsing. A final rinsing of the boring bar can then be carried out with a fresh cleaning liquid.

Weiterhin ist es besonders zweckmäßig, dass an dem Spülstutzen ein Verbindungselement für ein Hubseil angebracht ist. Somit kann der Spülstutzen mittels eines Hubseiles, etwa mittels einer Hilfsseilwinde am Mast eines Bohrgerätes, bis zur Oberseite einer Bohrstange am Mast gefördert werden. Das Hubseil kann auch als ein Sicherungsseil sowie zum Lösen des Spülstutzens nach Abschluss des Spülvorganges dienen.Furthermore, it is particularly expedient that a connecting element for a lifting rope is attached to the rinsing nozzle. Thus, the flushing nozzle can be conveyed up to the top of a boring bar on the mast by means of a hoisting rope, for example by means of an auxiliary winch on the mast of a drilling machine. The lifting rope can also serve as a safety rope as well as for releasing the rinsing nozzle after the rinsing process has been completed.

Die Erfindung wird nachfolgend anhand von bevorzugten Ausführungsbeispielen weiter beschrieben, welche schematisch in den Zeichnungen dargestellt sind. In den Zeichnungen zeigen:

Fig. 1:
eine schematische Seitenansicht einer erfindungsgemäßen Reinigungsanordnung;
Fig. 2:
eine perspektivische Ansicht eines erfindungsgemäßen Spülstutzens; und
Fig. 3:
eine Ausschnittsdarstellung zu einer Bohrstange mit angehängtem Spülstutzen.
The invention is described below with reference to preferred exemplary embodiments, which are shown schematically in the drawings. The drawings show:
Fig. 1:
a schematic side view of a cleaning arrangement according to the invention;
Fig. 2:
a perspective view of a flush nozzle according to the invention; and
Fig. 3:
a sectional view of a boring bar with attached rinsing nozzle.

Eine erfindungsgemäße Reinigungsanordnung 10 zum Reinigen einer kontaminierten Bohrstange 20 an einer Baumaschine 2 ist schematisch der Fig. 1 zu entnehmen. Die Baumaschine 2 ist im dargestellten Ausführungsbeispiel als ein Bohrgerät ausgeführt. Dieses weist ein Trägergerät 3 mit einem Raupenfahrwerk auf. An dem Trägergerät 3 ist ein vertikal gerichteter Mast 4 angebracht, an dessen Vorderseite mittels eines Schlittens verfahrbar ein Bohrantrieb 7, auch Kraftdrehkopf genannt, vertikal verstellbar gelagert ist. In den ringförmigen Bohrantrieb 7 ist in grundsätzlich bekannter Weise eine Bohrstange 20 eingesetzt und daran gelagert. Die Bohrstange 20 ist in dem dargestellten Ausführungsbeispiel als eine Kellystange mit drei zueinander teleskopierbar angeordneten Kellystangenelementen 27a, 27b und 27c ausgeführt. Die Bohrstange 20 ist über ein Hauptseil 5 relativ zum Mast 4 und dem Bohrantrieb 7 verfahrbar aufgehängt. An der Unterseite der Bohrstange 20 ist im Betrieb ein Bohrwerkzeug angebracht, welches im dargestellten Ausführungsbeispiel bei der Reinigung der Bohrstange 20 demontiert ist.A cleaning arrangement 10 according to the invention for cleaning a contaminated boring bar 20 on a construction machine 2 is schematically shown in FIG Fig. 1 refer to. In the exemplary embodiment shown, the construction machine 2 is designed as a drilling device. This has a carrier device 3 with a crawler track. On the carrier device 3, a vertically directed mast 4 is attached, on the front of which a drill drive 7, also called a power turret, is movably adjustable by means of a carriage. In the annular drilling drive 7, a boring bar 20 is inserted in a generally known manner and is mounted thereon. In the exemplary embodiment shown, the boring bar 20 is designed as a kelly bar with three kelly bar elements 27a, 27b and 27c arranged telescopically with respect to one another. The boring bar 20 is suspended so that it can move relative to the mast 4 and the boring drive 7 via a main cable 5. During operation, a drilling tool is attached to the underside of the boring bar 20, which in the exemplary embodiment shown is disassembled when cleaning the boring bar 20.

Bei der dargestellten Reinigungsanordnung 10 ist die Baumaschine 2 an ein vorgesehenes Reinigungsloch 12 gefahren, in welches die Bohrstange 20 zumindest teilweise eingefahren ist. Hierzu hat der Bohrantrieb 7 seine untere Stellung am Mast 4 eingenommen. Die Kellystangenelemente 27a, 27b und 27c sind austeleskopiert. Das Reinigungsloch 12 kann leer oder bereits mit einer Reinigungsflüssigkeit gefüllt sein.In the cleaning arrangement 10 shown, the construction machine 2 is moved to an intended cleaning hole 12, into which the boring bar 20 is at least partially inserted. For this purpose, the drill drive 7 has assumed its lower position on the mast 4. The Kelly rod elements 27a, 27b and 27c are telescoped out. The cleaning hole 12 can be empty or already filled with a cleaning liquid.

In dem dargestellten Ausführungsbeispiel gemäß Fig. 1 ist an dem Reinigungsloch 12 eine Spülvorrichtung 40 mit einer Pumpe zum Zuführen einer Reinigungsflüssigkeit vorgesehen. Die Spülvorrichtung 40 ist im dargestellten Ausführungsbeispiel kastenförmig ausgebildet und kann so gleichzeitig als eine Hebebühne für eine Bedienperson dienen. Dabei befindet sich eine Arbeitsfläche auf der Spülvorrichtung 40 für die Bedienperson etwa auf Höhe einer Oberseite der Bohrstange 20, um einen Spülstutzen 30, welcher nachfolgend in Zusammenhang mit den Figuren 2 und 3 beschrieben wird, an der Oberseite der Bohrstange 20 anzubringen. Hierzu kann ein Hilfs- oder Hubseil 6 verwendet werden, welches am Mast 4 der Baumaschine 2 vorgesehen ist.In the illustrated embodiment according to Fig. 1 a flushing device 40 with a pump for supplying a cleaning liquid is provided on the cleaning hole 12. In the exemplary embodiment shown, the flushing device 40 is box-shaped and can thus simultaneously serve as a lifting platform for an operator. In this case, there is a working surface on the flushing device 40 for the operator, approximately at the top of the boring bar 20, around a flushing nozzle 30, which is subsequently used in connection with the Figures 2 and 3 is described to attach to the top of the boring bar 20. For this purpose, an auxiliary or lifting rope 6 can be used, which is provided on the mast 4 of the construction machine 2.

Der in Fig. 1 nicht dargestellte Spülstutzen 30 ist in den Figuren 2 und 3 näher gezeigt. Dieser weist einen gebogenen Rohrkörper 32 mit einem Auslass 34 und einem Einlass 33 auf. An dem Einlass 33 ist ein Flansch zum Befestigen eines nicht dargestellten Zuführschlauches für die Reinigungsflüssigkeit vorgesehen. Die Reinigungsflüssigkeit wird von der Pumpe der Spülvorrichtung 40 über den Zuführschlauch zu dem Spülstutzen 30 geleitet.The in Fig. 1 Rinsing nozzle 30, not shown, is in the Figures 2 and 3 shown in more detail. This has a curved tubular body 32 with an outlet 34 and an inlet 33. A flange is provided at the inlet 33 for fastening a feed hose (not shown) for the cleaning liquid. The cleaning liquid is passed from the pump of the flushing device 40 via the feed hose to the flushing nozzle 30.

Der bogenförmige Spülstutzen 30 wird an einer offenen Oberseite der rohrförmigen Bohrstange 20 eingehakt, wie anschaulich in Fig. 3 dargestellt ist. Hierzu weist der Spülstutzen 30 eine plattenförmige Auflage 38 auf, mit welcher der Spülstutzen 30 an einer oberen Kante der Bohrstange 20 aufgesetzt werden kann. Über ein Befestigungselement 37 kann der Spülstutzen 30 an einer nicht dargestellten Halteeinrichtung an der Bohrstange 20 oder dem Bohrantrieb 7 befestigt werden, so dass er im Spülbetrieb eine Lagefixierung besitzt. Für ein Handhaben des Spülstutzens 30 mittels des Hubseiles 6 ist an einer Oberseite des Rohrkörpers 32 ein ösenartiges Verbindungselement 36 vorgesehen, in welches in Kranhaken des Hubseiles 6 eingehakt werden kann.The arc-shaped rinsing nozzle 30 is hooked onto an open top of the tubular boring bar 20, as can be seen in FIG Fig. 3 is shown. For this purpose, the rinsing nozzle 30 has a plate-shaped support 38, with which the rinsing nozzle 30 can be placed on an upper edge of the boring bar 20. The flushing nozzle 30 can be fastened to a holding device (not shown) on the boring bar 20 or the drilling drive 7 via a fastening element 37, so that it has a positional fixation in the flushing mode. For handling the flushing nozzle 30 by means of the lifting cable 6, an eyelet-like connecting element 36 is provided on an upper side of the tubular body 32, into which hook hooks of the lifting cable 6 can be hooked.

Bei der in Fig. 3 dargestellten Anordnungsvariante dient der Spülstutzen 30 zum Spülen eines Innenraumes 22 der rohrförmigen Bohrstange 20. Durch eine entsprechende glockenartige Ausgestaltung des Spülstutzens 30 oder durch die Anordnung mehrerer Spülstutzen 30 oder mehrerer Austrittsdüsen kann grundsätzlich auch eine Außenseite 24 der Bohrstange 20 von oben gespült werden. Alternativ oder ergänzend kann ein Spülen der Außenseite der Bohrstange 20 auch beim nach oben Ziehen der Bohrstange 20 von der Hebebühne an der Spülvorrichtung 40 aus über eine Bedienperson mit einem Schlauch oder einem entsprechenden Hochdruckreiniger erfolgen. Ein Reinigen der Außenseite 24 ist auch ohne weiteres im Anschluss nach einem Spülen des Innenraums 22 in einer horizontalen Position der Bohrstange 20 möglich.At the in Fig. 3 The arrangement variant shown serves the flushing nozzle 30 for flushing an interior 22 of the tubular boring bar 20. By means of a corresponding bell-shaped configuration of the flushing nozzle 30 or by arranging a plurality of flushing nozzles 30 or a plurality of outlet nozzles, in principle an outside 24 of the boring rod 20 can also be flushed from above. Alternatively or additionally, the outside of the boring bar 20 can also be rinsed when the boring bar 20 is pulled upwards from the lifting platform on the rinsing device 40 by an operator using a hose or a corresponding high-pressure cleaner. Cleaning the outside 24 is also readily possible after the interior 22 has been rinsed in a horizontal position of the boring bar 20.

Die erfindungsgemäße Reinigungsanordnung 10 und das erfindungsgemäße Reinigungsverfahren können auch bei anderen Baumaschinen 2 für den Tiefbau mit vergleichbaren stangenförmigen Anordnungen eingesetzt werden, so etwa bei Führungsstangen für Schlitzwandfräsen. Diese Führungsstangen sind teilweise nur für geringe oder überhaupt keine Drehbewegungen ausgelegt und können einen runden oder eckigen Querschnitt aufweisen.The cleaning arrangement 10 according to the invention and the cleaning method according to the invention can also be used in other construction machines 2 for civil engineering with comparable rod-shaped arrangements, for example in guide rods for trench wall cutters. These guide rods are partially designed for little or no rotary movements and can have a round or angular cross section.

Claims (12)

  1. Method for cleaning a drilling rod (20) contaminated with pollutant, which rod is a Kelly bar composed of at least two tubular Kelly bar elements (27) arranged inside one another, in which method
    - the Kelly bar is arranged in a vertical position,
    - a rinsing connection piece (30) with an outlet opening for large-scale overflowing of the Kelly bar with a cleaning fluid is attached to a top side of the Kelly bar and
    - the Kelly bar with the Kelly bar elements (27) arranged inside one another is rinsed off on inner and outer sides from above with the cleaning fluid, which is supplied via the rinsing connection piece (30).
  2. Method according to claim 1,
    characterised in that
    a cleaning hole is provided in the ground (12) and
    that the contaminated drilling rod (20) is brought into the cleaning hole (12) to rinse off the adhering pollutant.
  3. Method according to claim 1 or 2,
    characterised in that
    cleaning fluid is discharged, preferably continuously.
  4. Method according to claim 3,
    characterised in that
    the discharged cleaning fluid is supplied to a disposal device and/or a reprocessing device.
  5. Method according to any one of claims 1 to 4,
    characterised in that
    the rinsing connection piece (30) is conveyed by means of a hoisting cable (6) along the mast (4) of a carrier apparatus (3) to the top side of the drilling rod (20).
  6. Method according to any one of claims 1 to 5,
    characterised in that
    the cleaning fluid is supplied to an interior (22) of the drilling rod (20).
  7. Method according to any one of claims 1 to 6,
    characterised in that
    the Kelly bar elements (27) are telescoped at least partially for cleaning purposes.
  8. Method according to any one of claims 1 to 7,
    characterised in that
    the rinsing connection piece (30) is connected via a supply hose to a rinsing device (40), by which cleaning fluid is supplied.
  9. Cleaning assembly for cleaning a drilling rod (20) contaminated with the pollutant, which rod is a Kelly bar composed of at least two tubular Kelly bar elements (27) arranged inside one another, in particular for carrying out a method according to any one of claims 1 to 8, wherein
    - a cleaning hole (12) is provided in the ground, into which at least one part of the Kelly bar can be brought,
    - a rinsing device (40) with a rinsing connection piece (30) is provided, wherein the rinsing connection piece (30) is formed with an outlet opening for large-scale overflowing of the Kelly bar with a cleaning fluid,
    - the rinsing connection piece (30) is attached to a top side of the Kelly bar when the Kelly bar is vertical and
    - cleaning fluid can be supplied to the inside and outside of the Kelly bar via the rinsing connection piece (30) by the rinsing device (40), by which the Kelly bar elements (27) arranged inside one another can be rinsed with cleaning fluid from above in the cleaning hole (12).
  10. Cleaning assembly according to claim 9,
    characterised in that
    the rinsing device (40) and/or a discharge device for discharging cleaning fluid each has at least one pump.
  11. Cleaning assembly according to any one of claims 9 to 10,
    characterised in that
    the rinsing connection piece (30) is formed curved with an outlet (34) and an inlet (33), to which a rinsing hose is connected.
  12. Cleaning assembly according to any one of claims 9 to 11,
    characterised in that
    a connection element (36) for a hoisting cable (6) is fitted on the rinsing connection piece (30).
EP17177659.4A 2017-06-23 2017-06-23 Method for cleaning a drilling rod contaminated with pollutant and cleaning assembly for same Active EP3418487B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17177659.4A EP3418487B1 (en) 2017-06-23 2017-06-23 Method for cleaning a drilling rod contaminated with pollutant and cleaning assembly for same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17177659.4A EP3418487B1 (en) 2017-06-23 2017-06-23 Method for cleaning a drilling rod contaminated with pollutant and cleaning assembly for same

Publications (2)

Publication Number Publication Date
EP3418487A1 EP3418487A1 (en) 2018-12-26
EP3418487B1 true EP3418487B1 (en) 2020-08-05

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Application Number Title Priority Date Filing Date
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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5927307A (en) * 1996-08-13 1999-07-27 King; Glenn Frederick Apparatus for environmentally acceptable cleaning of oil well components
SE535421C2 (en) * 2010-08-26 2012-07-31 Atlas Copco Rock Drills Ab Method and system for determining a change in a flushing medium flow and rock drilling device
GB2520301A (en) * 2013-11-15 2015-05-20 Mincon Internat Filter drill rod adapted for cleaning
US10280713B2 (en) * 2014-10-31 2019-05-07 Spoked Solutions LLC Systems and methods for managing debris in a well

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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