EP0578034A1 - Method and device for drilling an earth borehole - Google Patents

Method and device for drilling an earth borehole Download PDF

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Publication number
EP0578034A1
EP0578034A1 EP93109815A EP93109815A EP0578034A1 EP 0578034 A1 EP0578034 A1 EP 0578034A1 EP 93109815 A EP93109815 A EP 93109815A EP 93109815 A EP93109815 A EP 93109815A EP 0578034 A1 EP0578034 A1 EP 0578034A1
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EP
European Patent Office
Prior art keywords
head
pilot hole
drilling
soil
expanding
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.)
Granted
Application number
EP93109815A
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German (de)
French (fr)
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EP0578034B1 (en
Inventor
Franz-Josef Püttmann
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Tracto Technik GmbH and Co KG
Original Assignee
Tracto Technik GmbH and Co KG
Tracto Technik Paul Schmidt Spezialmaschinen KG
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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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/002—Down-hole drilling fluid separation systems
    • 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
    • E21B10/00—Drill bits
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
    • E21B7/201—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes with helical conveying means
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/28—Enlarging drilled holes, e.g. by counterboring

Definitions

  • the invention relates to a method for producing an earth hole for trenchless laying of lines, in which a pilot hole of relatively small diameter is first produced and this pilot hole is finally widened to a cross section which allows a product pipe to be drawn in or pushed in.
  • European patent application 0 247 767 describes a method for producing an earth borehole with the aid of a drill head arranged at the free end of a tubular rod, for example.
  • the rod is connected to a feed and rotary drive and rotates the drill head through the soil.
  • the drill head is provided with an inclined surface pointing in the direction of advance and produces a kind of pilot hole which is carried out in the same operation, i.e. is expanded in the direction of advance. This is done with the help of a conical expansion head arranged behind the drill head in the direction of advance, which forms a structural unit with the drill head.
  • Two-stage processes are also known, in which a pilot bore is first produced with the aid of a self-driven ram boring machine of smaller diameter, as is known, for example, from German patent specification 2 156 259, and then counter-bored the direction of advance is expanded with the help of a more or less conical or egg-shaped tool.
  • this tool must be pulled with a rope through the pilot hole against the working direction of the ram boring machine and therefore requires a special drive unit.
  • such expanding heads only laterally displace the soil surrounding the pilot hole and are therefore only suitable for well-cohesive soils or sandy soils without stones.
  • their speed of advance is comparatively slow in view of the required displacement work.
  • the invention is therefore based on the object of creating a likewise two-stage method which not only avoids the aforementioned disadvantages of the conventional methods but also allows expansion without substantially any displacement work.
  • the solution to this problem consists in a method in which, with the aid of a drill head arranged at the end of a driven rotating rod, a pilot bore is first produced, the drill head is replaced by an expansion head, and the pilot bore is then expanded against the direction of advance of the drill head by peeling off the soil surrounding the pilot bore . Accordingly, only a single drive unit arranged in a starting pit is used both in the production of the pilot bore and in the expansion thereof, and only the drilling head needs to be replaced by an expanding or peeling head between the two working phases.
  • the widening head is set in rotation with the aid of the rod and thus peels the soil surrounding the pilot hole, which with the aid of a flushing agent moves in the direction of advance, ie through the widened hole can be removed through.
  • a device with a rotationally driven linkage, an exchangeable drill head at the free end of the linkage and a likewise interchangeable expansion head are particularly suitable for carrying out the method according to the invention.
  • the expander head At its end pointing in the working direction, the expander head is provided with an inclined surface which, when the expander head rotates, peels off the soil surrounding the pilot hole.
  • the expanding head can be provided with a circumferential or conveying groove which runs, for example, in a helical manner.
  • the linkage can also be provided with a thrust drive in order to accelerate the advance during both drilling and peeling.
  • the expanding head can be connected to a conveyor or product pipe, via which the soil detached from the expanding head can be removed, for example, if a flushing agent is introduced into the delivery or product tube via a tubular rod and is inserted between the expanding head and the delivery pipe
  • Adapter piece with at least one inlet opening for the ground is arranged.
  • a deflector can be arranged in front of this opening in order to prevent the opening or the delivery pipe from becoming blocked by larger stones.
  • the removal of the soil through the conveyor pipe can be improved even more if detergent nozzles are arranged on the expansion head and / or in the area of the inlet opening of the adapter piece, which act as injectors and, as it were, suck the soil into the interior of the adapter.
  • the drive unit is located in a starting pit 1 and is described in detail in German Offenlegungsschrift 41 03 196; it essentially consists of a carriage 2 with a thrust and impact drive 3 and a rotary drive 4 for a linkage 5 on a carriage 6.
  • a drill head 7 for producing a pilot hole 8 in the soil 9 to be traversed.
  • This drill head 7 is detachably fastened to the rod 5 and is exchanged in a target pit for an expansion head 11 with a product pipe 12 .
  • the linkage 5 moves with the expanding head 11 and the product tube 12 against the direction of advance through the Pilot hole and in this way creates an earth hole 13 with a cross section substantially corresponding to the diameter of the expander head 11, through which the soil loosened from the expander head is discharged mechanically or by means of a flushing liquid in a manner not shown.
  • a continuous removal of the soil in particular with the aid of a rinsing liquid, enables the arrangement of an adapter piece 14 with a plurality of inlet openings 15 pointing in the working direction between the expansion head 11 and the product pipe 12, which in this case serves to discharge the loose soil entering via the openings 15.
  • the drill pipe 5 consisting of pipes is connected in a manner not shown to a source of detergent. 5 and 6, the linkage continues axially through the expansion head 11 up to the adapter piece 14 with the product tube 12.
  • the expansion head is wedge-shaped and has an inclined surface 16 with a cutting plate 17 at the front end and an axial bore 18 through which a rod piece 5 extends, which is detachably connected to the rest of the rod in a manner not shown. Further cutting plates 19 are located on one side of the expansion head, the edges of which can be armored with a wear-resistant material.
  • the expansion head 11 is provided with grooves 20. Clogging of the product or delivery pipe 12 and the adapter 14 prevent deflectors 21 arranged in front of the adapter 14 in the working direction, which prevent larger stones from penetrating into the inlet openings or the adapter.
  • a pilot bore can be produced in a simple manner in two working phases with a single drive unit and then widened to the diameter required for the product tube while simultaneously pulling in a product tube.

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

Abstract

In a method of drilling an earth borehole, a pilot hole is first of all produced by the driving method by means of a drill head (7) arranged on the end of a driven rotary and/or push stem (5), then the drill head is replaced by a widening head (11) with a sloping surface (16) pointing against the driving direction and the pilot hole is subsequently widened against the driving direction by stripping off the earth by means of the rotating widening head. The earth accumulating in the process is removed by means of a flushing medium via a conveying or product pipe following the widening head. <IMAGE>

Description

Die Erfindung bezieht sich auf ein Verfahren zum Herstellen einer Erdbohrung zum grabenlosen Verlegen von Leitungen, bei dem zunächst eine Pilotbohrung verhältnismäßig geringen Durchmessers hergestellt und diese Pilotbohrung schließlich bis auf einen Querschnitt aufgeweitet wird, der das Einziehen oder Einschieben eines Produktrohrs erlaubt.The invention relates to a method for producing an earth hole for trenchless laying of lines, in which a pilot hole of relatively small diameter is first produced and this pilot hole is finally widened to a cross section which allows a product pipe to be drawn in or pushed in.

Ein Verfahren zum Herstellen einer Erdbohrung mit Hilfe eines am freien Ende eines beispielsweise rohrförmigen Gestänges angeordneten Bohrkopfs beschreibt die europäische Offenlegungsschrift 0 247 767. Das Gestänge ist mit einem Vorschub- und Rotationsantrieb verbunden und bewegt den Bohrkopf drehend durch das Erdreich. Der Bohrkopf ist mit einer in die Vortriebsrichtung weisenden Schrägfläche versehen und stellt eine Art Pilotbohrung her, die im gleichen Arbeitsgang, d.h. in Vortriebsrichtung aufgeweitet wird. Dies geschieht mit Hilfe eines in Vortriebsrichtung hinter dem Bohrkopf angeordneten konischen Aufweitkopfes, der mit dem Bohrkopf eine Baueinheit bildet.European patent application 0 247 767 describes a method for producing an earth borehole with the aid of a drill head arranged at the free end of a tubular rod, for example. The rod is connected to a feed and rotary drive and rotates the drill head through the soil. The drill head is provided with an inclined surface pointing in the direction of advance and produces a kind of pilot hole which is carried out in the same operation, i.e. is expanded in the direction of advance. This is done with the help of a conical expansion head arranged behind the drill head in the direction of advance, which forms a structural unit with the drill head.

Bekannt sind auch zweistufige Verfahren, bei denen zunächst mit Hilfe eines selbstgetriebenen Rammbohrgeräts kleineren Durchmessers, wie es beispielsweise aus der deutschen Patentschrift 2 156 259 bekannt ist, eine Pilotbohrung hergestellt und diese anschließend entgegen der Vortriebsrichtung mit Hilfe eines mehr oder minder konischen bzw. eiförmigen Werkzeugs aufgeweitet wird. Dieses Werkzeug muß jedoch mit Hilfe eines Seils durch die Pilotbohrung entgegen der Arbeitsrichtung des Rammbohrgeräts hindurchgezogen werden und erfordert daher ein besonderes Antriebsaggregat. Hinzu kommt, daß derartige Aufweitköpfe das die Pilotbohrung umgebende Erdreich lediglich seitlich verdrängen und sich daher nur für gut bindige Böden oder Sandböden ohne Steine eignen. Zudem ist ihre Vortriebsgeschwindigkeit angesichts der erforderlichen Verdrängungsarbeit verhältnismäßig gering.Two-stage processes are also known, in which a pilot bore is first produced with the aid of a self-driven ram boring machine of smaller diameter, as is known, for example, from German patent specification 2 156 259, and then counter-bored the direction of advance is expanded with the help of a more or less conical or egg-shaped tool. However, this tool must be pulled with a rope through the pilot hole against the working direction of the ram boring machine and therefore requires a special drive unit. In addition, such expanding heads only laterally displace the soil surrounding the pilot hole and are therefore only suitable for well-cohesive soils or sandy soils without stones. In addition, their speed of advance is comparatively slow in view of the required displacement work.

Der Erfindung liegt daher die Aufgabe zugrunde, ein ebenfalls zweistufiges Verfahren zu schaffen, das nicht nur die vorerwähnten Nachteile der herkömmlichen Verfahren vermeidet, sondern darüber hinaus auch ein Aufweiten im wesentlichen ohne Verdrängungsarbeit erlaubt.The invention is therefore based on the object of creating a likewise two-stage method which not only avoids the aforementioned disadvantages of the conventional methods but also allows expansion without substantially any displacement work.

Die Lösung dieser Aufgabe besteht in einem Verfahren, bei dem mit Hilfe eines am Ende eines angetriebenen Drehgestänges angeordneten Bohrkopfes zunächst eine Pilotbohrung hergestellt, der Bohrkopf durch einen Aufweitkopf ersetzt und die Pilotbohrung sodann entgegen der Vortriebsrichtung des Bohrkopfes durch Abschälen des die Pilotbohrung umgebenden Erdreichs aufgeweitet wird. Demgemäß kommt sowohl beim Herstellen der Pilotbohrung als auch beim Aufweiten derselben lediglich ein einziges, in einer Startgrube angeordnetes Antriebsaggregat zur Verwendung und braucht zwischen den beiden Arbeitsphasen lediglich der Bohrkopf durch einen Aufweit- bzw. Schälkopf ersetzt zu werden.The solution to this problem consists in a method in which, with the aid of a drill head arranged at the end of a driven rotating rod, a pilot bore is first produced, the drill head is replaced by an expansion head, and the pilot bore is then expanded against the direction of advance of the drill head by peeling off the soil surrounding the pilot bore . Accordingly, only a single drive unit arranged in a starting pit is used both in the production of the pilot bore and in the expansion thereof, and only the drilling head needs to be replaced by an expanding or peeling head between the two working phases.

Der Aufweitkopf wird mit Hilfe des Gestänges in Rotation versetzt und schält so das die Pilotbohrung umgebende Erdreich, das sich mit Hilfe eines Spülmittels in Vortriebsrichtung, d.h. durch die aufgeweitete Bohrung hindurch entfernen läßt.The widening head is set in rotation with the aid of the rod and thus peels the soil surrounding the pilot hole, which with the aid of a flushing agent moves in the direction of advance, ie through the widened hole can be removed through.

Zur Durchführung des erfindungsgemäßen Verfahrens eignet sich besonders eine Vorrichtung mit einem drehangetriebenen Gestänge, einem auswechselbaren Bohrkopf am freien Ende des Gestänges und einem ebenfalls auswechselbaren Aufweitkopf. Der Aufweitkopf ist an seinem in die Arbeitsrichtung weisenden Ende mit einer Schrägfläche versehen, die bei der Rotation des Aufweitkopfes das die Pilotbohrung umgebende Erdreich abschält. Um dieses Erdreich besser in Richtung auf das Förder- bzw. Produktrohr abzufördern, kann der Aufweitkopf mit einer beispielweise schraubenförmig verlaufenden Umfangs- bzw. Fördernut versehen sein.A device with a rotationally driven linkage, an exchangeable drill head at the free end of the linkage and a likewise interchangeable expansion head are particularly suitable for carrying out the method according to the invention. At its end pointing in the working direction, the expander head is provided with an inclined surface which, when the expander head rotates, peels off the soil surrounding the pilot hole. In order to better discharge this soil in the direction of the conveying or product pipe, the expanding head can be provided with a circumferential or conveying groove which runs, for example, in a helical manner.

Das Gestänge kann zusätzlich mit einem Schubantrieb versehen sein, um den Vortrieb sowohl beim Bohren als auch beim Schälen zu beschleunigen.The linkage can also be provided with a thrust drive in order to accelerate the advance during both drilling and peeling.

Der Aufweitkopf kann mit einem Förder- oder auch Produktrohr verbunden sein, über das sich das von dem Aufweitkopf gelöste Erdreich abfördern läßt, wenn beispielsweise über ein rohrförmiges Gestänge ein Spülmittel in das Förder- bzw. Produktrohr eingeleitet wird und zwischen dem Aufweitkopf und dem Förderrohr ein Adapterstück mit mindestens einer Eintrittsöffnung für das Erdreich angeordnet ist. Vor dieser Öffnung kann ein Abweiser angeordnet sein, um ein Verstopfen der Öffnung oder auch des Förderrohrs durch größere Steine zu verhindern. Das Abfördern des Erdreichs durch das Förderrohr läßt sich noch verbessern, wenn am Aufweitkopf und/oder im Bereich der Eintrittsöffnung des Adapterstücks Spülmitteldüsen angeordnet sind, die als Injektoren wirken und das Erdreich gleichsam in das Adapterinnere hineinsaugen.The expanding head can be connected to a conveyor or product pipe, via which the soil detached from the expanding head can be removed, for example, if a flushing agent is introduced into the delivery or product tube via a tubular rod and is inserted between the expanding head and the delivery pipe Adapter piece with at least one inlet opening for the ground is arranged. A deflector can be arranged in front of this opening in order to prevent the opening or the delivery pipe from becoming blocked by larger stones. The removal of the soil through the conveyor pipe can be improved even more if detergent nozzles are arranged on the expansion head and / or in the area of the inlet opening of the adapter piece, which act as injectors and, as it were, suck the soil into the interior of the adapter.

Die Erfindung wird nachfolgend anhand von in der Zeichnung dargestellten Ausführungsbeispielen des näheren erläutert. In der Zeichnung zeigen:

Fig. 1:
eine Vorrichtung beim Herstellen einer Pilotbohrung in der ersten bzw. Vortriebsphase,
Fig. 2:
die Vorrichtung nach Fig. 1 zu Beginn der zweiten bzw. Aufweitphase,
Fig. 3:
die Vorrichtung nach Fig. 1 während der Aufweitphase,
Fig. 4:
die Vorrichtung in derselben Situation, jedoch mit einem Adapter zwischen Aufweitkopf und Förderrohr,
Fig. 5:
eine Seitenansicht des Aufweitkopfs und
Fig. 6:
eine Draufsicht auf den Aufweitkopf der Fig. 5, jeweils mit einem nachgeordneten Adapter.
The invention is described below in the Drawing illustrated embodiments of the closer explained. The drawing shows:
Fig. 1 :
a device during the production of a pilot bore in the first or advance phase,
Fig. 2 :
1 at the beginning of the second or expansion phase,
Fig. 3 :
1 during the expansion phase,
Fig. 4 :
the device in the same situation, but with an adapter between the expansion head and the delivery pipe,
Fig. 5 :
a side view of the expanding head and
Fig. 6 :
a plan view of the expanding head of FIG. 5, each with a downstream adapter.

Das Antriebsaggregat befindet sich in einer Startgrube 1 und ist in seinen Einzelheiten in der deutschen Offenlegungsschrift 41 03 196 beschrieben; es besteht im wesentlichen aus einer Lafette 2 mit einem Schub- und Schlagantrieb 3 sowie einem Drehantrieb 4 für ein Gestänge 5 auf einem Schlitten 6.The drive unit is located in a starting pit 1 and is described in detail in German Offenlegungsschrift 41 03 196; it essentially consists of a carriage 2 with a thrust and impact drive 3 and a rotary drive 4 for a linkage 5 on a carriage 6.

Am vorderen bzw. freien Ende des Gestänges 5 befindet sich ein Bohrkopf 7 zum Herstellen einer Pilotbohrung 8 in dem zu unterquerenden Erdreich 9. Dieser Bohrkopf 7 ist lösbar an dem Gestänge 5 befestigt und wird in einer Zielgrube gegen einen Aufweitkopf 11 mit einem Produktrohr 12 ausgetauscht. Nach einer Antriebsumkehr bewegt sich das Gestänge 5 mit dem Aufweitkopf 11 und dem Produktrohr 12 entgegen der Vortriebsrichtung durch die Pilotbohrung und schafft auf diese Weise eine Erdbohrung 13 mit einem im wesentlichen dem Durchmesser des Aufweitkopfes 11 entsprechenden Querschnitt, durch die das von dem Aufweitkopf gelöste Erdreich auf nicht näher dargestellte Weise mechanisch oder mittels einer Spülflüssigkeit abgefördert wird.At the front or free end of the rod 5 there is a drill head 7 for producing a pilot hole 8 in the soil 9 to be traversed. This drill head 7 is detachably fastened to the rod 5 and is exchanged in a target pit for an expansion head 11 with a product pipe 12 . After a drive reversal, the linkage 5 moves with the expanding head 11 and the product tube 12 against the direction of advance through the Pilot hole and in this way creates an earth hole 13 with a cross section substantially corresponding to the diameter of the expander head 11, through which the soil loosened from the expander head is discharged mechanically or by means of a flushing liquid in a manner not shown.

Ein kontinuierliches Abfördern des Erdreichs, insbesondere mit Hilfe einer Spülflüssigkeit ermöglicht die Anordnung eines Adapterstücks 14 mit mehreren in Arbeitsrichtung weisenden Eintrittsöffnungen 15 zwischen dem Aufweitkopf 11 und dem Produktrohr 12, das in diesem Falle zum Abfördern des über die Öffnungen 15 eintretenden losen Erdreichs dient. Um das Abfördern des Erdreichs zu erleichtern, ist das aus Rohren bestehende Bohrgestänge 5 in nicht dargestellter Weise mit einer Spülmittelquelle verbunden. Wie sich aus den Fig. 5 und 6 ergibt, setzt sich das Gestänge axial durch den Aufweitkopf 11 bis zu dem Adapterstück 14 mit dem Produktrohr 12 fort.A continuous removal of the soil, in particular with the aid of a rinsing liquid, enables the arrangement of an adapter piece 14 with a plurality of inlet openings 15 pointing in the working direction between the expansion head 11 and the product pipe 12, which in this case serves to discharge the loose soil entering via the openings 15. In order to facilitate the removal of the soil, the drill pipe 5 consisting of pipes is connected in a manner not shown to a source of detergent. 5 and 6, the linkage continues axially through the expansion head 11 up to the adapter piece 14 with the product tube 12.

Der Aufweitkopf ist keilförmig ausgebildet und besitzt eine Schrägfläche 16 mit einer Schneidplatte 17 am vorderen Ende sowie einer axialen Bohrung 18, durch die sich ein Gestängestück 5 erstreckt, das mit dem Rest des Gestänges in nicht dargestellter Weise lösbar verbunden ist. Weitere Schneidplatten 19 befinden sich an der einen Seite des Aufweitkopfes, dessen Kanten mit einem verschließfesten Werkstoff gepanzert sein können.The expansion head is wedge-shaped and has an inclined surface 16 with a cutting plate 17 at the front end and an axial bore 18 through which a rod piece 5 extends, which is detachably connected to the rest of the rod in a manner not shown. Further cutting plates 19 are located on one side of the expansion head, the edges of which can be armored with a wear-resistant material.

Um das Abfördern des gelösten Erdreichs zu erleichtern, ist der Aufweitkopf 11 mit Nuten 20 versehen. Ein Verstopfen des Produkt- bzw. Förderrohrs 12 und des Adapters 14 vermeiden in Arbeitsrichtung vor dem Adapter 14 angeordnete Abweiser 21, die ein Eindringen größerer Steine in die Eintrittsöffnungen bzw. den Adapter verhindern.In order to facilitate the removal of the loosened soil, the expansion head 11 is provided with grooves 20. Clogging of the product or delivery pipe 12 and the adapter 14 prevent deflectors 21 arranged in front of the adapter 14 in the working direction, which prevent larger stones from penetrating into the inlet openings or the adapter.

Mit der erfindungsgemäßen Vorrichtung läßt sich in zwei Arbeitsphasen mit einem einzigen Antriebsaggregat auf einfache Weise eine Pilotbohrung herstellen und anschließend bei gleichzeitigem Einziehen eines Produktrohrs auf den für das Produktrohr erforderlichen Durchmesser aufweiten.With the device according to the invention, a pilot bore can be produced in a simple manner in two working phases with a single drive unit and then widened to the diameter required for the product tube while simultaneously pulling in a product tube.

Claims (12)

Verfahren zum Herstellen einer Erdbohrung, bei dem - mit Hilfe eines am Ende eines angetriebenen Drehgestänges - angeordneten Bohrkopfs - eine Pilotbohrung hergestellt, - der Bohrkopf durch einen Aufweitkopf ersetzt und - entgegen der Vortriebsrichtung das die Pilotbohrung umgebende Erdreich von dem Aufweitkopf abgeschält wird. A method of drilling an earth well in which - With the help of a driven rotating rod at the end - arranged drill head - a pilot hole was drilled, - The drilling head replaced by an expanding head and - Against the direction of advance, the soil surrounding the pilot hole is peeled off by the expanding head. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Erdreich mit Hilfe eines Spülmittels in Vortriebsrichtung abgefördert wird.A method according to claim 1, characterized in that the soil is removed in the direction of advance with the aid of a flushing agent. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1 oder 2 mit - einem schub- und/oder drehangetriebenen Gestänge (5), - einem auswechselbaren Bohrkopf (7) am freien Ende des Gestänges und - einem auswechselbaren Aufweitkopf (11) mit einer Schrägfläche (16) an seinem in die Arbeitsrichtung weisenden Ende. Device for performing the method according to claim 1 or 2 with - a thrust and / or rotating linkage (5), - A replaceable drill head (7) at the free end of the rod and - A replaceable expansion head (11) with an inclined surface (16) at its end pointing in the working direction. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß der Aufweitkopf (11) mit mindestens einer Fördernut (20) versehen ist.Apparatus according to claim 3, characterized in that the expanding head (11) is provided with at least one conveying groove (20). Vorrichtung nach einem der Ansprüche 3 oder 4, dadurch gekennzeichnet, daß der Aufweitkopf (11) mit einem Förderrohr (12) verbunden ist.Device according to one of claims 3 or 4, characterized in that the expanding head (11) is connected to a delivery pipe (12). Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß das Förderrohr (12) mit einem rohrförmigen Gestänge (5) verbunden ist.Apparatus according to claim 5, characterized in that the delivery pipe (12) is connected to a tubular rod (5). Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß das rohrförmige Gestänge (5) an eine Spülmittelquelle angeschlossen ist.Apparatus according to claim 6, characterized in that the tubular linkage (5) is connected to a detergent source. Vorrichtung nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet, daß zwischen dem Aufweitkopf (11) und dem Förderrohr (12) ein Adapterstück (14) angeordnet ist.Device according to one of claims 3 to 6, characterized in that an adapter piece (14) is arranged between the expansion head (11) and the delivery pipe (12). Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß ein hohles Adapterstück (14) mindestens eine Eintrittsöffnung (15) besitzt.Apparatus according to claim 8, characterized in that a hollow adapter piece (14) has at least one inlet opening (15). Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß vor der Öffnung (15) ein Abweiser (21) angeordnet ist.Device according to claim 9, characterized in that a deflector (21) is arranged in front of the opening (15). Vorrichtung nach Anspruch 9 oder 10, dadurch gekennzeichnet, daß im Bereich der Öffnung (15) Injektordüsen angeordnet sind.Apparatus according to claim 9 or 10, characterized in that injector nozzles are arranged in the region of the opening (15). Vorrichtung nach einem der Ansprüche 3 bis 11, dadurch gekennzeichnet, daß an dem Aufweitkopf (11) Spülmitteldüsen angeordnet sind.Device according to one of claims 3 to 11, characterized in that detergent nozzles are arranged on the expansion head (11).
EP93109815A 1992-06-24 1993-06-19 Method and device for drilling an earth borehole Expired - Lifetime EP0578034B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4220430A DE4220430C2 (en) 1992-06-24 1992-06-24 Method and device for making an earth borehole
DE4220430 1992-06-24

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EP0578034A1 true EP0578034A1 (en) 1994-01-12
EP0578034B1 EP0578034B1 (en) 1997-10-15

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996021793A1 (en) * 1995-01-10 1996-07-18 Trenchless Replacement Services Ltd. Drilling and pipe laying unit
FR2735841A1 (en) * 1995-06-21 1996-12-27 Ftcs Trepanning enlarging tool for pilot holes drilled in ground for insertion of ducts
WO2001059248A1 (en) 2000-02-11 2001-08-16 Alois Pichler Method for inserting pipes into a bore hole and insertion drill head for carrying out said method
FR2809449A1 (en) 2000-05-25 2001-11-30 Jack Butterworth Device for installing pipe in ground comprises reamer driven by pulling rods with pulling head fixed to pipe and uncoupling means between reamer and pulling head
WO2002035050A1 (en) * 2000-10-27 2002-05-02 Tracto-Technik Gmbh Device for producing a peripheral hole
WO2004053285A1 (en) * 2002-12-06 2004-06-24 Tracto-Technik Gmbh Method and device for drilling a channel
EP1820933A1 (en) * 2006-02-21 2007-08-22 John P. Doherty Tunnelling system
EP2108745A3 (en) * 2008-04-12 2011-11-30 Rüdiger Kögler Mr. Method and device for laying a conduit in the ground.
CN102147033B (en) * 2010-02-09 2013-01-16 中国机械工业建设总公司 Non-excavation directional traversing construction method for thermal power pipeline
CN104145785A (en) * 2014-07-31 2014-11-19 何剑光 Automatic drip irrigation system for families
CN106857187A (en) * 2017-03-17 2017-06-20 浙江大学 A kind of energy-conservation drip irrigation system of self-identifying control

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19608980C2 (en) * 1996-03-08 1998-05-07 Tracto Technik Device for drilling in the ground
DE19610238C2 (en) * 1996-03-15 1998-08-20 Tracto Technik Device for enlarging the cross section of a pilot bore
DE19610239C1 (en) 1996-03-15 1997-07-17 Tracto Technik Device for enlarging cross-section of pilot bore or for replacing old pipe
DE19803596C2 (en) * 1998-01-30 2000-06-08 Tracto Technik Proportional valve for controlling a horizontal drilling carriage
DE102007015088B4 (en) 2007-03-29 2015-07-09 Tracto-Technik Gmbh & Co. Kg Method for the multi-stage production of a bore and apparatus for carrying out the method

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US3202228A (en) * 1963-01-30 1965-08-24 Allan C Schuster Drill apparatus and drill bit for enlarging apertures
FR2115660A5 (en) * 1970-11-17 1972-07-07 Inst Gornogo Dela Si
FR2201374A1 (en) * 1972-10-02 1974-04-26 Boehler & Co Ag Geb
US3894402A (en) * 1974-07-19 1975-07-15 Martin D Cherrington Apparatus and method for emplacing a conduit along an underground arcuate path
GB2126436A (en) * 1982-09-02 1984-03-21 Electric Power Res Inst A cable following apparatus having cable cleaning capabilities and method
WO1988008480A1 (en) * 1987-04-21 1988-11-03 Horizontal Drilling International Process for installing an underground pipe and the installation concerned
WO1991005132A1 (en) * 1989-09-29 1991-04-18 Diamant Boart Craelius Ab Reamer
EP0468664A2 (en) * 1990-07-26 1992-01-29 Cherrington Corporation Method and apparatus for enlarging an underground path
DE4134095C1 (en) * 1991-10-15 1992-07-16 Flowtex Technologie Import Von Kabelverlegemaschinen Gmbh, 7505 Ettlingen, De

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US4784230A (en) * 1985-05-14 1988-11-15 Cherrington Martin D Apparatus and method for installing a conduit within an arcuate bore
USRE33793E (en) * 1985-05-14 1992-01-14 Cherrington Corporation Apparatus and method for forming an enlarged underground arcuate bore and installing a conduit therein

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3202228A (en) * 1963-01-30 1965-08-24 Allan C Schuster Drill apparatus and drill bit for enlarging apertures
FR2115660A5 (en) * 1970-11-17 1972-07-07 Inst Gornogo Dela Si
FR2201374A1 (en) * 1972-10-02 1974-04-26 Boehler & Co Ag Geb
US3894402A (en) * 1974-07-19 1975-07-15 Martin D Cherrington Apparatus and method for emplacing a conduit along an underground arcuate path
GB2126436A (en) * 1982-09-02 1984-03-21 Electric Power Res Inst A cable following apparatus having cable cleaning capabilities and method
WO1988008480A1 (en) * 1987-04-21 1988-11-03 Horizontal Drilling International Process for installing an underground pipe and the installation concerned
WO1991005132A1 (en) * 1989-09-29 1991-04-18 Diamant Boart Craelius Ab Reamer
EP0468664A2 (en) * 1990-07-26 1992-01-29 Cherrington Corporation Method and apparatus for enlarging an underground path
DE4134095C1 (en) * 1991-10-15 1992-07-16 Flowtex Technologie Import Von Kabelverlegemaschinen Gmbh, 7505 Ettlingen, De

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996021793A1 (en) * 1995-01-10 1996-07-18 Trenchless Replacement Services Ltd. Drilling and pipe laying unit
FR2735841A1 (en) * 1995-06-21 1996-12-27 Ftcs Trepanning enlarging tool for pilot holes drilled in ground for insertion of ducts
WO2001059248A1 (en) 2000-02-11 2001-08-16 Alois Pichler Method for inserting pipes into a bore hole and insertion drill head for carrying out said method
FR2809449A1 (en) 2000-05-25 2001-11-30 Jack Butterworth Device for installing pipe in ground comprises reamer driven by pulling rods with pulling head fixed to pipe and uncoupling means between reamer and pulling head
WO2002035050A1 (en) * 2000-10-27 2002-05-02 Tracto-Technik Gmbh Device for producing a peripheral hole
WO2004053285A1 (en) * 2002-12-06 2004-06-24 Tracto-Technik Gmbh Method and device for drilling a channel
GB2412935A (en) * 2002-12-06 2005-10-12 Tracto Technik Method and device for drilling a channel
GB2412935B (en) * 2002-12-06 2006-02-22 Tracto Technik Method and device for drilling a channel
EP1820933A1 (en) * 2006-02-21 2007-08-22 John P. Doherty Tunnelling system
EP2108745A3 (en) * 2008-04-12 2011-11-30 Rüdiger Kögler Mr. Method and device for laying a conduit in the ground.
CN102147033B (en) * 2010-02-09 2013-01-16 中国机械工业建设总公司 Non-excavation directional traversing construction method for thermal power pipeline
CN104145785A (en) * 2014-07-31 2014-11-19 何剑光 Automatic drip irrigation system for families
CN104145785B (en) * 2014-07-31 2016-04-27 何剑光 A kind of family automatic drip irrigation system
CN106857187A (en) * 2017-03-17 2017-06-20 浙江大学 A kind of energy-conservation drip irrigation system of self-identifying control

Also Published As

Publication number Publication date
DE4220430C2 (en) 1994-09-22
EP0578034B1 (en) 1997-10-15
DE59307531D1 (en) 1997-11-20
DE4220430A1 (en) 1994-01-05

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