EP3214260A1 - Method for making a borehole in the soil and soil boring device and use - Google Patents

Method for making a borehole in the soil and soil boring device and use Download PDF

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Publication number
EP3214260A1
EP3214260A1 EP17000323.0A EP17000323A EP3214260A1 EP 3214260 A1 EP3214260 A1 EP 3214260A1 EP 17000323 A EP17000323 A EP 17000323A EP 3214260 A1 EP3214260 A1 EP 3214260A1
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EP
European Patent Office
Prior art keywords
drill
drill head
heads
detection unit
head
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
EP17000323.0A
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German (de)
French (fr)
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EP3214260B1 (en
Inventor
Hans-Joachim Bayer
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Tracto Technik GmbH and Co KG
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Tracto Technik GmbH and Co KG
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Publication of EP3214260A1 publication Critical patent/EP3214260A1/en
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Classifications

    • 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
    • E21B47/00—Survey of boreholes or wells
    • E21B47/02—Determining slope or direction
    • E21B47/024—Determining slope or direction of devices in the borehole
    • 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
    • E21B47/00—Survey of boreholes or wells
    • E21B47/02—Determining slope or direction
    • E21B47/022—Determining slope or direction of the borehole, e.g. using geomagnetism
    • E21B47/0228—Determining slope or direction of the borehole, e.g. using geomagnetism using electromagnetic energy or detectors therefor
    • 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
    • E21B47/00—Survey of boreholes or wells
    • E21B47/09—Locating or determining the position of objects in boreholes or wells, e.g. the position of an extending arm; Identifying the free or blocked portions of pipes
    • E21B47/092—Locating or determining the position of objects in boreholes or wells, e.g. the position of an extending arm; Identifying the free or blocked portions of pipes by detecting magnetic anomalies
    • 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
    • E21B7/04—Directional drilling
    • E21B7/046—Directional drilling horizontal drilling

Definitions

  • the invention relates to a method for introducing a hole in the ground with two converging drill heads and a Erdbohrvorraum with a drill head.
  • a location of the drill heads by using strong artificial magnetic fields and / or artificial magnetic target points (so-called “beacons” for land use and “benchmarks” for underwater use) to perform.
  • the provision of the artificial magnetic fields or artificial magnetic target points requires a further measure, which must be carried out in advance of the drilling.
  • the artificial magnetic fields or artificial magnetic target points must be introduced at predetermined locations, which is also expensive.
  • the artificial magnetic fields and / or magnetic target points may need to be removed from the ground again.
  • suitable systems such as a high-precision optical gyro system.
  • the gyro system in a drill head can be used to determine where the drill bit is currently located.
  • Such a system is expensive and especially in the area of the target section there remains a risk with regard to the alignment of the two drill heads with respect to each other, so that this system is also associated with time and correction effort, which is also cost-intensive.
  • the invention has for its object to provide an improved method for introducing a hole in the ground with two converging drill heads, which is simple in construction and / or reduces the time and correction effort in a succession-to-bore.
  • a (partial) bore is first created in each case, which results in a continuous bore when the two (partial) bores meet.
  • an earth boring device should be specified with which an improved on-drilling can be achieved.
  • the idea on which the invention is based is that at least one of the two drill heads detects the other drill head and, due to the detection of the other drill head, at least one of the two drill heads is adapted in its advancing direction with respect to the other drill head.
  • the basic idea is based on the fact that for the success of the succession-to-bore primarily not their own position, position and / or orientation of the drill head is important, but the location, position and / or orientation of the other drill head. Alignment is not based on a predetermined trajectory that is to be achieved, but on the sensed location, position, and / or orientation of the other drill head that is also moved to create the face-to-face bore.
  • the adaptation of the propulsion direction of at least one of the two drill heads is thus carried out on the basis of a non-static reference point outside the at least one drill head, which is a departure from the hitherto the accuracy increasing method.
  • the invention provides a method for introducing a hole in the ground with two converging drill heads, each of which can create a partial bore.
  • one of the two drill heads is detected by means of a detection device on the other drill head and, depending on the detected drill head, the propulsion direction of at least one of the two drill heads is adjusted with respect to the other drill bit. It can thereby be achieved that, in response to the detection of the other drill head, the adaptation of the advancing direction to one another can be carried out.
  • At least one of the two drill-heads to be drilled together is aligned with the other (moving or moving) of the two drill heads.
  • the term “drill head” in the sense of the invention comprises a front region of a drill pipe of an earth drilling device.
  • Erdbohrvoriques is understood in particular any device which moves a BohrgestSheschadore exhibiting drill string in a channel to be created in the ground to create a bore, especially a horizontal bore, or widen or retract lines or other long body in the ground.
  • the earth boring device may in particular be an HD device (horizontal drilling, horizontal drilling).
  • An “explorer” according to the invention comprises a drill string driving device which operates in a soil displacing manner, and the drill string can be driven to rotate at least over a partial angle range in the longitudinal axial direction of the drill string.
  • HD in the context of the present invention comprises a bore which extends substantially horizontally or may be a bore inclined to the horizontal.
  • the drill head may in particular be a drill head in which nozzles are present, through which drilling fluid can be discharged into the area around the drill head into the ground.
  • a drilling fluid may be used which contains bentonite, preferably in the form of particles.
  • the drilling fluid may be pressurized so that the pressurized drilling fluid may exit the nozzles at the drill bit.
  • the drilling fluid can be used to loosen the soil in the area around the drill head.
  • the drilling fluid exiting the drill head, which may be pressurized, may loosen the soil.
  • the Erdbohrvoriques may have a corresponding pump for acting on the drilling fluid.
  • the drill string which connects the Erdbohrvorides with the drill head, have a channel through which the drilling fluid, for example, from a reservoir, which may be arranged in particular over days, transported to the drill head.
  • the detection unit is designed such that it enables emission and reception of electromagnetic radiation.
  • the detection unit may be part of a unit for emitting and receiving electromagnetic radiation.
  • the detection unit may also be separate from a unit for emitting and receiving electromagnetic radiation.
  • "Electromagnetic radiation" in the sense of the invention comprises any electromagnetic wave, in particular radar waves, so that the detection unit can be designed as a radar.
  • the outer contour of other objects in the ground can be detected in a simple manner.
  • the shape and position of another drill head can be detected because of the hard reflection on the metal of the other drill head this easily recognizable is.
  • the distance to the other of the two drill heads can be easily determined.
  • the front contour of the other drill head can be determined.
  • the position of the front contour descriptive parameters of the other drill head can be detected: tilt (pitch), roll (tools face position), axis (level and side adjustment). The detection of at least one of the above parameters allows an accurate drilling-to-each other by an axis-and exactly aligned running each other is possible.
  • one of the two drill heads can retract after slow retraction of the other, exactly and without any deviations in the bore of the retracting drill head and drive through this particular.
  • a common borehole widening and a common pipe or cable entry can be made possible.
  • this can be long holes made possible, which can be drilled with relatively small Erdbohrvorraumen - and thus cost.
  • the rock solution zone in front of the drill head is detected by means of the detection unit.
  • rock release zone includes an area in front of the drill head in which a drilling fluid emerging from the drill head causes a loosening of the soil located in front of the drill head.
  • the drilling fluid can emerge from the drill head by means of nozzles configured in the drill head.
  • the drilling fluid may be pressurized to provide a (high) pressure mud and a rock release zone to be formed in front of the drill head.
  • It is a hydromechanical power component addressed during propulsion in loose rock, in which the mechanical part can then easily penetrate.
  • the area of the rock dissolution zone that is to say a hydromechanical loosening zone, is in the range of a few centimeters, in particular 7 to 17 centimeters, preferably 10 centimeters to 15 centimeters.
  • radar waves detect foreign bodies, density differences by reflection (return of the wave signals) in the soil, whereby they can thus also recognize the location of former trenches, can map clay deposits and Tonhorizonte, can recognize the surface of the groundwater and can, for example, by particularly hard reflection of metal deposits (metal pipes, foreign drill pipe) recognize exactly.
  • another drill head as occurs here on the drill head when drilling on each other, can be "razor sharp" capture, which on the one hand the contour shown, as well as the distance of the drill head can be determined.
  • a pattern detected by one of the two drill heads may be compared to a comparative sample.
  • the term "pattern" in the sense of the invention comprises a contour of the detected drill head, wherein the contour in particular includes the drill head front of the drill head.
  • the comparison pattern may be a pattern stored in a memory which describes the other bit being detected in a predetermined position or positions.
  • a computer unit in the form of a (mini) computer or another unit, can be provided, which processes data by means of programmable instructions. It can be provided that the detection unit is configured in such a way that the pattern can be formed by the detection unit from the reflected signals and compared with at least one of patterns stored in the memory.
  • the data of the detection unit are transmitted to a unit arranged in the drill string or to a unit above the ground, wherein the unit in the drill string or above the ground arranged unit may comprise the computer unit.
  • the unit may be the machine control station of the auger.
  • the term "above ground” also includes placement in a start or target pit.
  • a pattern recognition software may be installed, with which patterns from the detected drill head are compared to one or more comparison patterns.
  • the recorded drill head locates accurate position and side and / or height deviations can be determined.
  • the advancing direction of at least one of the two drill heads can be adjusted if, for example, predetermined deviations between the detected pattern and the comparison pattern (s) are exceeded.
  • An automatic or initiated by the operator of one of the two Erdbohrraumen adjustment can then be performed by the exceeding of the predetermined deviation transmitted to the machine control station and corrected by the operator by counter-control commands to an orientation unit or an automatic control (eg, based on fuzzy logic) corresponding counter control commands is generated without human intervention and transmitted to an orientation unit of the machine control center.
  • the two drill heads can be aligned with each other. Both drill heads can thus be approached and optimized with regard to the drilling on each other.
  • the inventive method can thus be realized not only in that one of the two drill heads has a detection unit, but both.
  • the invention also provides an earth boring apparatus having a boring head in which a detection unit is provided which detects the alignment of at least one other boring head. Furthermore, the Erdbohrvoriques has an orientation unit with which the drill head can be aligned with its advancing direction to the other drill head.
  • the detection unit has a pattern recognition unit with which the other drill bit to be detected is easily identifiable.
  • the invention also provides a use of a detection unit in a drill head, wherein the drill head is designed for drilling in soil.
  • the detection unit is used to detect a further drill head and to align the advancing direction of the drill head with respect to the further drill head.
  • Fig. 1 shows an introduction of a hole in the soil by means of two drill heads 1, 2.
  • the drill heads 1, 2 are connected to a drill pipe 3 or drill string, or consists of a plurality of interconnected rod sections. According to the drill course, the rod sections are connected to each other.
  • the drill heads 1, 2 are driven by means of the drill string 3 from a arranged on the surface of the earth drive device 4 and (temporarily) driven in rotation.
  • the rotating drive serves on the one hand to improve the propulsion of the drill heads 1, 2 in the ground and on the other hand is achieved in conjunction with the formation of at least one of the two drill heads 1, 2 as an oblique drill head a control function.
  • the inclined surface of the drill head 1, 2 generates a deflection, the effect of which compensates over a complete revolution of the drill head 1, 2. If the drill heads 1, 2 configured as inclined drill heads are thus driven to rotate continuously during the feed, the earth boring device drills straight ahead.
  • a reversal of the Erdbohrvorraum takes place by the drill heads 1, 2 in a defined orientation, ie a certain position of the inclined surface of the drill heads 1, 2 (the so-called "roll angle") is stopped and simultaneously advanced further.
  • the deflection caused by the inclined surface then leads to an arcuate course of the bore. This is continued until the desired new drilling direction is reached. Then the rotary drive is switched on again to drill straight ahead.
  • each of the two drill heads 1, 2 has a radar unit 5, which is arranged behind or in the oblique surface of the drill heads 1, 2. This defines a detection area that (partially) leads the drill head 1, 2.
  • the drill heads 1, 2 each have a detection unit 6 operatively connected to the radar unit 5.
  • the radar unit 5 may be a radar configured as a combined front and side radar, which emits bundled electromagnetic waves as a primary signal and receives the signals reflected by objects as secondary signals.
  • the detection unit 6 evaluates the reflected (secondary) signals of the radar unit 5 in order to obtain information about the objects, wherein in particular the outer contour of the detected objects is determined.
  • the radar waves reflected by the drill head front of the respective other drill head 1, 2 can be evaluated by means of a pattern recognition software which is installed in a computer unit 7 in the respective drill head 1, 2.
  • the pattern recognition software By means of the pattern recognition software, the inclination, roll, lateral deviation and / or height deviation of the other drill head 1, 2 can be detected.
  • one or more comparison patterns for the drill head 1, 2 are stored in the memory of the computer unit 7.
  • the advancing direction of at least one of the two drill heads 1, 2 is adjusted when a predetermined deviation between the detected pattern and the comparison pattern (s) is exceeded.
  • a predetermined deviation between the detected pattern and the comparison pattern (s) is exceeded.
  • two adjustments are possible.
  • an automatic adaptation can be carried out by generating commands in response to the comparison of the computer unit 7, which are transmitted to the machine control station of the earth drilling device (drive device 4), about the direction of advance on an orientation unit 8 of the drive device 4 of at least one of the two drill heads 1, 2 adapt.
  • the adjustment may be on a display of the drive device 4 will be displayed.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geophysics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Earth Drilling (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

Verfahren zum Einbringen einer Bohrung in das Erdreich mit zwei aufeinander zulaufenden Bohrköpfen (1, 2), wobei einer der beiden Bohrköpfe (1, 2) mittels einer Erfassungseinheit (6) den anderen Bohrkopf erfasst und die Vortriebsrichtung mindestens eines der Bohrköpfe (1, 2) in Bezug auf den anderen Bohrkopf (1, 2) angepasst wird.Method for introducing a drill hole into the ground with two mutually tapered drill heads (1, 2), wherein one of the two drill heads (1, 2) detects the other drill head by means of a detection unit (6) and the propulsion direction of at least one of the drill heads (1, 2 ) with respect to the other drill head (1, 2).

Description

Die Erfindung betrifft ein Verfahren zum Einbringen einer Bohrung in das Erdreich mit zwei aufeinander zulaufenden Bohrköpfen sowie eine Erdbohrvorrichtung mit einem Bohrkopf.The invention relates to a method for introducing a hole in the ground with two converging drill heads and a Erdbohrvorrichtung with a drill head.

Es ist eine Aufeinander-zu-Bohrung bekannt, bei der mittels zweier Erdbohrvorrichtungen jeweils eine Bohrung erstellt wird, die so zueinander ausgerichtet sind, dass sich eine durchgängige Bohrung ergeben soll, die beiden Bohrungen sich also an ihrem jeweiligen Zielabschnitt (Endpunkt) treffen. Die bisher erreichbare "Treffsicherheit" in der Aufeinander-zu Bohrung ist dabei gering und mit hohen Kosten verbunden. Eine bisher erreichbare "Treffsicherheit" von +/- 0,5 Meter erscheint zunächst ausreichend, aber sofern sich die beiden Bohrungen nicht deckungsgleich treffen, kann beispielsweise kein Rohr in die sich ergebende Bohrung eingeschoben werden. Daher sind bisher mehrere, oft drei bis acht, Korrekturbohrungen im Zielabschnitt erforderlich. Das Aufeinander-zu-Bohren ist daher zeitaufwendig und kostenaufwändig.There is a known-to-bore, in which by means of two Erdbohrvorrichtungen each bore is created, which are aligned with each other so that a continuous bore should result, the two holes so meet at their respective target section (end point). The achievable "accuracy" in the succession-to-bore is low and associated with high costs. A hitherto achievable "accuracy" of +/- 0.5 meters initially seems sufficient, but if the two holes do not meet congruent, for example, no pipe can be inserted into the resulting hole. So far, several, often three to eight, correction holes in the target section are required. The stack-up-drilling is therefore time consuming and costly.

Zur Erhöhung der Treffsicherheit wurde bisher zum einen vorgeschlagen, eine Ortung der Bohrköpfe unter Ausnutzung starker künstlicher Magnetfelder und/oder künstlicher magnetischer Zielpunkte (sogenannte "beacons" für den Landeinsatz und "benchmarks" für den Unterwassereinsatz) durchzuführen. Das Vorsehen der künstlichen Magnetfelder oder künstlichen magnetischen Zielpunkte erfordert eine weitere Maßnahme, die im Vorfeld der Bohrung durchgeführt werden muss. Die künstlichen Magnetfelder beziehungsweise künstlichen magnetischen Zielpunkte müssen an vorbestimmten Stellen eingebracht werden, welches auch aufwendig ist. Zudem müssen die künstlichen Magnetfelder und/oder magnetischen Zielpunkte unter Umständen wieder aus dem Erdreich entfernt werden. Zum anderen wurde bisher vorgeschlagen, eine jeweilige Ortung der zwei verwendeten Bohrköpfe mittels geeigneter Systeme, beispielsweise einem hochpräzisen optischen Kreiselsystem, durchzuführen. Mit dem Kreiselsystem in einem Bohrkopf kann bestimmt werden, wo sich der Bohrkopf derzeit befindet. Ein derartiges System ist teuer und gerade im Bereich des Zielabschnitts verbleibt hierbei ein Risiko hinsichtlich der achs- und niveaugleichen Ausrichtung der beiden Bohrköpfe zueinander, so dass auch dieses System mit Zeit- und Korrekturaufwand, der zudem kostenintensiv ist, verbunden ist.To increase the accuracy was previously proposed on the one hand, a location of the drill heads by using strong artificial magnetic fields and / or artificial magnetic target points (so-called "beacons" for land use and "benchmarks" for underwater use) to perform. The provision of the artificial magnetic fields or artificial magnetic target points requires a further measure, which must be carried out in advance of the drilling. The artificial magnetic fields or artificial magnetic target points must be introduced at predetermined locations, which is also expensive. In addition, the artificial magnetic fields and / or magnetic target points may need to be removed from the ground again. On the other hand, it has been proposed so far to perform a respective location of the two drill heads used by means of suitable systems, such as a high-precision optical gyro system. The gyro system in a drill head can be used to determine where the drill bit is currently located. Such a system is expensive and especially in the area of the target section there remains a risk with regard to the alignment of the two drill heads with respect to each other, so that this system is also associated with time and correction effort, which is also cost-intensive.

Der Erfindung lag die Aufgabe zugrunde, ein verbessertes Verfahren zum Einbringen einer Bohrung in das Erdreich mit zwei aufeinander zulaufenden Bohrköpfen zu schaffen, welches einfach aufgebaut ist und/oder den Zeit- und Korrekturaufwand bei einer Aufeinander-zu-Bohrung verringert. Mit den aufeinander zu laufenden Bohrköpfen wird jeweils zunächst eine (Teil-)Bohrung erstellt, die beim Aufeinandertreffen der beiden (Teil-)Bohrungen eine durchgehende Bohrung ergibt. Ferner sollte eine Erdbohrvorrichtung angegeben werden, mit der ein verbessertes Aufeinander-zu-Bohren erreichbar ist.The invention has for its object to provide an improved method for introducing a hole in the ground with two converging drill heads, which is simple in construction and / or reduces the time and correction effort in a succession-to-bore. With the successive drill heads, a (partial) bore is first created in each case, which results in a continuous bore when the two (partial) bores meet. Furthermore, an earth boring device should be specified with which an improved on-drilling can be achieved.

Die der Erfindung zugrunde liegende Idee liegt darin, dass mindestens einer der beiden Bohrköpfe den anderen Bohrkopf erfasst und aufgrund der Erfassung des anderen Bohrkopfes mindestens einer der beiden Bohrköpfe in Bezug auf den anderen Bohrkopf in seiner Vortriebsrichtung angepasst wird. Der Grundgedanke geht damit davon aus, dass für das Gelingen der Aufeinander-zu-Bohrung primär nicht die eigene Lage, Position und/oder Ausrichtung des Bohrkopfes von Bedeutung ist, sondern die Lage, Position und/oder Ausrichtung des anderen Bohrkopfes. Die Ausrichtung erfolgt nicht anhand einer vorbestimmten Bahn, die es zu erreichen gilt, sondern anhand der erfassten Lage, Position und/oder Ausrichtung des anderen Bohrkopfes, der zum Erstellen der Aufeinander-zu-Bohrung ebenfalls bewegt wird/wurde. Die Anpassung der Vortriebsrichtung mindestens eines der beiden Bohrköpfe erfolgt damit anhand eines nicht statischen Bezugspunkts außerhalb des mindestens einen Bohrkopfs, welches eine Abkehr von der bisher die Treffsicherheit erhöhenden Verfahren ist.The idea on which the invention is based is that at least one of the two drill heads detects the other drill head and, due to the detection of the other drill head, at least one of the two drill heads is adapted in its advancing direction with respect to the other drill head. The basic idea is based on the fact that for the success of the succession-to-bore primarily not their own position, position and / or orientation of the drill head is important, but the location, position and / or orientation of the other drill head. Alignment is not based on a predetermined trajectory that is to be achieved, but on the sensed location, position, and / or orientation of the other drill head that is also moved to create the face-to-face bore. The adaptation of the propulsion direction of at least one of the two drill heads is thus carried out on the basis of a non-static reference point outside the at least one drill head, which is a departure from the hitherto the accuracy increasing method.

Die Erfindung schafft ein Verfahren zum Einbringen einer Bohrung in das Erdreich mit zwei aufeinander zulaufenden Bohrköpfen, die jeweils eine Teilbohrung erstellen können. Bei dem Verfahren wird einer der beiden Bohrköpfe mittels einer Erfassungseinrichtung am anderen Bohrkopf erfasst und in Abhängigkeit von dem erfassten Bohrkopf wird die Vortriebsrichtung mindestens eines der beiden Bohrköpfe in Bezug auf den anderen Bohrkopf angepasst. Hierdurch kann erreicht werden, dass in Reaktion auf die Erfassung des anderen Bohrkopfes die Anpassung der Vortriebsrichtung aufeinander zu durchgeführt werden kann. Zumindest einer der beiden aufeinander-zu-bohrenden Bohrköpfe wird am anderen (sich bewegenden oder eine Bewegung ausgeführt habenden) der beiden Bohrköpfe ausgerichtet.The invention provides a method for introducing a hole in the ground with two converging drill heads, each of which can create a partial bore. In the method, one of the two drill heads is detected by means of a detection device on the other drill head and, depending on the detected drill head, the propulsion direction of at least one of the two drill heads is adjusted with respect to the other drill bit. It can thereby be achieved that, in response to the detection of the other drill head, the adaptation of the advancing direction to one another can be carried out. At least one of the two drill-heads to be drilled together is aligned with the other (moving or moving) of the two drill heads.

Der Begriff "Bohrkopf" umfasst im Sinne der Erfindung einen vorderseitigen Bereich eines Bohrgestänges einer Erdbohrvorrichtung. Unter einer "Erdbohrvorrichtung" wird insbesondere jede Vorrichtung verstanden, welche ein Bohrgestängeschüsse aufweisendes Bohrgestänge in einen zu erstellenden Kanal im Erdreich bewegt, um eine Bohrung, insbesondere eine Horizontalbohrung, zu erstellen oder aufzuweiten oder um Leitungen oder andere lange Körper in das Erdreich einzuziehen. Bei der Erdbohrvorrichtung kann es sich insbesondere um eine HD-Vorrichtung (horizontal drilling, Horizontalbohrung) handeln. Eine erfindungsgemäße "Erbohrvorrichtung" umfasst eine ein Bohrgestänge antreibende Vorrichtung, die erdreichverdrängend arbeitet, und das Bohrgestänge zumindest über einen Teilwinkelbereich drehend in längsachsialer Richtung des Bohrgestänges angetrieben werden kann. Der Begriff "HD" im Sinne der vorliegenden Erfindung umfasst eine Bohrung, die im Wesentlichen horizontal verläuft oder eine zur Horizontalen geneigte Bohrung sein kann.The term "drill head" in the sense of the invention comprises a front region of a drill pipe of an earth drilling device. Under a "Erdbohrvorrichtung" is understood in particular any device which moves a Bohrgestängeschüsse exhibiting drill string in a channel to be created in the ground to create a bore, especially a horizontal bore, or widen or retract lines or other long body in the ground. The earth boring device may in particular be an HD device (horizontal drilling, horizontal drilling). An "explorer" according to the invention comprises a drill string driving device which operates in a soil displacing manner, and the drill string can be driven to rotate at least over a partial angle range in the longitudinal axial direction of the drill string. The term "HD" in the context of the present invention comprises a bore which extends substantially horizontally or may be a bore inclined to the horizontal.

Bei dem Bohrkopf kann es sich insbesondere um einen Bohrkopf handeln, in dem Düsen vorhanden sind, durch die Bohrflüssigkeit in den Bereich um den Bohrkopf in das Erdreich ausgebracht werden kann. Insbesondere kann eine Bohrflüssigkeit verwendet werden, die Bentonit, bevorzugt in Form von Partikeln, enthält. Die Bohrflüssigkeit kann mit Druck beaufschlagt werden, so dass die mit Druck beaufschlagte Bohrflüssigkeit aus den Düsen am Bohrkopf austreten kann. Mittels der Bohrflüssigkeit kann eine Lockerung des Erdreichs im Bereich um den Bohrkopf erfolgen. Die aus dem Bohrkopf austretende Bohrflüssigkeit, die mit Druck beaufschlagt sein kann, kann das Erdreich lockern. Die Erdbohrvorrichtung kann zur Beaufschlagung der Bohrflüssigkeit eine entsprechende Pumpe aufweisen. Zur Zuleitung der Bohrflüssigkeit zum Bohrkopf kann das Bohrgestänge, welches die Erdbohrvorrichtung mit dem Bohrkopf verbindet, einen Kanal aufweisen, über den die Bohrflüssigkeit beispielsweise von einem Vorratsbehälter, der insbesondere über Tage angeordnet sein kann, zum Bohrkopf transportiert wird.The drill head may in particular be a drill head in which nozzles are present, through which drilling fluid can be discharged into the area around the drill head into the ground. In particular, a drilling fluid may be used which contains bentonite, preferably in the form of particles. The drilling fluid may be pressurized so that the pressurized drilling fluid may exit the nozzles at the drill bit. The drilling fluid can be used to loosen the soil in the area around the drill head. The drilling fluid exiting the drill head, which may be pressurized, may loosen the soil. The Erdbohrvorrichtung may have a corresponding pump for acting on the drilling fluid. For supplying the drilling fluid to the drill head, the drill string, which connects the Erdbohrvorrichtung with the drill head, have a channel through which the drilling fluid, for example, from a reservoir, which may be arranged in particular over days, transported to the drill head.

In einer bevorzugten Ausführungsform ist die Erfassungseinheit derart ausgestaltet, dass diese ein Aussenden und Empfangen von elektromagnetischer Strahlung ermöglicht. Die Erfassungseinheit kann Teil einer Einheit zum Aussenden und Empfangen elektromagnetischer Strahlung sein. Die Erfassungseinheit kann auch separat zu einer Einheit zum Aussenden und Empfangen von elektromagnetischer Strahlung sein. "Elektromagnetische Strahlung" im Sinne der Erfindung umfasst jedwede elektromagnetische Welle, insbesondere Radarwellen, so dass die Erfassungseinheit als ein Radar ausgebildet sein kann. Mittels eines Radars kann in einfacher Weise die äußere Kontur von anderen Objekten im Erdreich erfasst werden. Insbesondere kann mit einer Radarantenne die Form und Lage eines anderen Bohrkopfes erfasst werden, weil durch die harte Reflektion am Metall des anderen Bohrkopfes dieser leicht erkennbar ist. Insbesondere kann der Abstand zum anderen der beiden Bohrköpfe leicht ermittelt werden.In a preferred embodiment, the detection unit is designed such that it enables emission and reception of electromagnetic radiation. The detection unit may be part of a unit for emitting and receiving electromagnetic radiation. The detection unit may also be separate from a unit for emitting and receiving electromagnetic radiation. "Electromagnetic radiation" in the sense of the invention comprises any electromagnetic wave, in particular radar waves, so that the detection unit can be designed as a radar. By means of a radar, the outer contour of other objects in the ground can be detected in a simple manner. In particular, with a radar antenna, the shape and position of another drill head can be detected because of the hard reflection on the metal of the other drill head this easily recognizable is. In particular, the distance to the other of the two drill heads can be easily determined.

In einer bevorzugten Ausführungsform kann insbesondere die Frontkontur des anderen Bohrkopf ermittelt werden. Hierzu kann mindestens einer der nachfolgenden, die Lage der Frontkontur beschreibenden Parameter des anderen Bohrkopfs erfasst werden: Neigung (pitch), Verrollung (toolsface position), Achse (Niveau- und Seitenangleichung). Die Erfassung mindestens eines der vorstehenden Parameter ermöglicht ein genaues Aufeinander-zu-Bohren, indem ein achs- und lagegenaues aufeinander Zulaufen möglich ist.In a preferred embodiment, in particular the front contour of the other drill head can be determined. For this purpose, at least one of the following, the position of the front contour descriptive parameters of the other drill head can be detected: tilt (pitch), roll (tools face position), axis (level and side adjustment). The detection of at least one of the above parameters allows an accurate drilling-to-each other by an axis-and exactly aligned running each other is possible.

In einer bevorzugten Ausführungsform kann einer der beiden Bohrköpfe nach langsamem Zurückfahren des anderen, genau und ohne Abweichungen in die Bohrung des zurückfahrenden Bohrkopfs einfahren und diese insbesondere durchfahren. Hierdurch kann eine gemeinsame Bohrlochaufweitung und ein gemeinsamer Rohr- oder Kabeleinzug ermöglicht werden. Beispielsweise können hierdurch lange Bohrungen ermöglich werden, die mit relativ kleinen Erdbohrvorrichtungen - und damit kostengünstig - gebohrt werden können.In a preferred embodiment, one of the two drill heads can retract after slow retraction of the other, exactly and without any deviations in the bore of the retracting drill head and drive through this particular. As a result, a common borehole widening and a common pipe or cable entry can be made possible. For example, this can be long holes made possible, which can be drilled with relatively small Erdbohrvorrichtungen - and thus cost.

In einer bevorzugten Ausführungsform wird mittels der Erfassungseinheit die Gesteinslösungszone vor dem Bohrkopf erfasst.In a preferred embodiment, the rock solution zone in front of the drill head is detected by means of the detection unit.

Der Begriff "Gesteinslösezone" umfasst einen Bereich vor dem Bohrkopf, bei dem eine aus dem Bohrkopf austretende Bohrflüssigkeit eine Lockerung des vor dem Bohrkopf befindlichen Erdreichs bewirkt. Die Bohrflüssigkeit kann mittels im Bohrkopf ausgestalteten Düsen aus dem Bohrkopf austreten. Die Bohrflüssigkeit kann mit einem Druck beaufschlagt werden, so dass es zu einer (Hoch-) Druckbohrspülung kommt und eine Gesteinslösezone vor dem Bohrkopf ausgebildet wird. Es wird ein hydromechanischer Leistungsanteil beim Vortrieb im Lockergestein angesprochen, in den der mechanische Anteil dann leichter vordringen kann. Üblicherweise liegt der Bereich der Gesteinslösezone, das heißt eine hydromechanische Lockerungszone, im Bereich von einigen Zentimetern, insbesondere 7 bis 17 Zentimeter, bevorzugt 10 Zentimeter bis 15 Zentimeter vor. Obwohl in der Gesteinslösezone vor dem Bohrkopf aufgrund der verwendeten Bohrflüssigkeit, die insbesondere Bentonit in Form von Bentonitpartikeln enthalten kann, davon ausgegangen wurde, dass eine Erfassung eines der beiden Bohrköpfe mittels des anderen Bohrkopfes schwierig sein könnte, da die Bentonitpartikel eine Abschirmung bewirken könnten, ist es dennoch möglich, den Bohrkopf erfindungsgemäß zu erfassen. Insbesondere mittels elektromagnetischer Strahlung, bevorzugt Radarwellen, ist ein Eindringen in den Bereich vor und seitlich des Bohrkopfes bis zu mehreren Dezimetern bis mehreren Metern möglich. Insbesondere Radarwellen erfassen durch Reflektion (Rücklauf der Wellensignale) Fremdkörper, Dichteunterschiede im Boden, wodurch diese somit auch die Lage ehemaliger Leitungsgräben erkennen können, können Toneinlagerungen und Tonhorizonte abbilden, können die Oberfläche des Grundwassers erkennen und können zum Beispiel durch besonders harte Reflektion von Metalleinlagerungen (Metallrohre; fremdes Bohrgestänge) genau erkennen. Insbesondere ein anderer Bohrkopf, wie hier beim Aufeinander-zu-Bohren auf den Bohrkopf zukommt, lässt sich "messerscharf" erfassen, wodurch zum einen die Kontur abgebildet, als auch die Entfernung des Bohrkopfs bestimmt werden kann.The term "rock release zone" includes an area in front of the drill head in which a drilling fluid emerging from the drill head causes a loosening of the soil located in front of the drill head. The drilling fluid can emerge from the drill head by means of nozzles configured in the drill head. The drilling fluid may be pressurized to provide a (high) pressure mud and a rock release zone to be formed in front of the drill head. It is a hydromechanical power component addressed during propulsion in loose rock, in which the mechanical part can then easily penetrate. Usually, the area of the rock dissolution zone, that is to say a hydromechanical loosening zone, is in the range of a few centimeters, in particular 7 to 17 centimeters, preferably 10 centimeters to 15 centimeters. Although in the rock release zone ahead of the wellhead, due to the drilling fluid used, which may include bentonite bentonite particles in particular, it was believed that detection of one of the two wellheads by the other wellhead could be difficult since the bentonite particles could provide shielding Nevertheless, it is possible to detect the drill head according to the invention. In particular by means of electromagnetic radiation, preferably radar waves, penetration into the area in front of and laterally of the drill head is possible up to several decimeters to several meters. In particular, radar waves detect foreign bodies, density differences by reflection (return of the wave signals) in the soil, whereby they can thus also recognize the location of former trenches, can map clay deposits and Tonhorizonte, can recognize the surface of the groundwater and can, for example, by particularly hard reflection of metal deposits (metal pipes, foreign drill pipe) recognize exactly. In particular, another drill head, as occurs here on the drill head when drilling on each other, can be "razor sharp" capture, which on the one hand the contour shown, as well as the distance of the drill head can be determined.

In einer bevorzugten Ausführungsform kann ein von dem einen der beiden Bohrköpfe erfasstes Muster mit einem Vergleichsmuster verglichen werden. Der Begriff "Muster" im Sinne der Erfindung umfasst eine Kontur des erfassten Bohrkopfs, wobei die Kontur insbesondere die Bohrkopffront des Bohrkopfs beinhaltet. Das Vergleichsmuster kann ein in einem Speicher abgelegtes Muster sein, welches den anderen Bohrkopf, der erfasst wird, in einer vorbestimmten Position oder vorbestimmten Positionen beschreibt. Es kann insbesondere zusätzlich oder integriert in der Erfassungseinheit eine Rechnereinheit, in Form eines (Mini-)Computers oder einer anderen Einheit, vorgesehen sein, die mittels programmierbarer Vorschriften Daten verarbeitet. Es kann vorgesehen sein, dass die Erfassungseinheit derart ausgestaltet ist, dass das Muster von der Erfassungseinheit aus den reflektierten Signalen gebildet und mit mindestens einem von im Speicher abgelegten Mustern vergleichen werden kann. Es kann aber auch vorgesehen sein, dass die Daten der Erfassungseinheit zu einer im Bohrstrang oder zu einer oberhalb des Erdreichs angeordneten Einheit übermittelt werden, wobei die Einheit im Bohrstrang bzw. oberhalb des Erdreichs angeordnete Einheit die Rechnereinheit aufweisen kann. Die Einheit kann der Maschinenleitstand der Erdbohrvorrichtung sein. Der Begriff "oberhalb des Erdreichs" umfasst auch die Anordnung in einer Start- oder Zielgrube. Auf der Rechnereinheit kann eine Software zur Mustererkennnung installiert sein, mit der Muster von dem erfassten Bohrkopf mit einem oder mehreren Vergleichsmustern verglichen werden. Damit kann der erfasste Bohrkopf lagegenau geortet und Seiten- und/oder Höhenabweichungen ermittelt werden. Die Vortriebsrichtung mindestens eines der beiden Bohrköpfe kann angepasst werden, wenn beispielsweise vorbestimmte Abweichungen zwischen dem erfassten Muster und dem oder den Vergleichsmuster(n) überschritten werden. Es kann dann eine automatische oder durch den Maschinenführer einer der beiden Erdbohrrichtungen initiierte Anpassung durchgeführt werden, indem das Überschreiten der vorbestimmten Abweichung an den Maschinenleitstand übertragen und vom Maschinenführer durch Gegensteuerbefehle an einer Orientierungseinheit korrigiert wird oder eine Automatiksteuerung (z.B. auf Fuzzylogik-Basis) entsprechende Gegensteuerbefehle ohne menschliches Zutun generiert und an eine an eine Orientierungseinheit des Maschinenleitstands übermittelt wird.In a preferred embodiment, a pattern detected by one of the two drill heads may be compared to a comparative sample. The term "pattern" in the sense of the invention comprises a contour of the detected drill head, wherein the contour in particular includes the drill head front of the drill head. The comparison pattern may be a pattern stored in a memory which describes the other bit being detected in a predetermined position or positions. In particular, additionally or integrated in the detection unit, a computer unit, in the form of a (mini) computer or another unit, can be provided, which processes data by means of programmable instructions. It can be provided that the detection unit is configured in such a way that the pattern can be formed by the detection unit from the reflected signals and compared with at least one of patterns stored in the memory. However, it may also be provided that the data of the detection unit are transmitted to a unit arranged in the drill string or to a unit above the ground, wherein the unit in the drill string or above the ground arranged unit may comprise the computer unit. The unit may be the machine control station of the auger. The term "above ground" also includes placement in a start or target pit. On the computing unit, a pattern recognition software may be installed, with which patterns from the detected drill head are compared to one or more comparison patterns. Thus, the recorded drill head locates accurate position and side and / or height deviations can be determined. The advancing direction of at least one of the two drill heads can be adjusted if, for example, predetermined deviations between the detected pattern and the comparison pattern (s) are exceeded. An automatic or initiated by the operator of one of the two Erdbohrrichtungen adjustment can then be performed by the exceeding of the predetermined deviation transmitted to the machine control station and corrected by the operator by counter-control commands to an orientation unit or an automatic control (eg, based on fuzzy logic) corresponding counter control commands is generated without human intervention and transmitted to an orientation unit of the machine control center.

In einer bevorzugten Ausführungsform können die beiden Bohrköpfe aufeinander zu ausgerichtet werden. Beide Bohrköpfe können damit eine Annäherung und Optimierung hinsichtlich des Aufeinander-zu-Bohrens erfahren. Das erfindungsgemäße Verfahren kann damit nicht nur dadurch realisiert werden, dass einer der beiden Bohrköpfe eine Erfassungseinheit aufweist, sondern beide.In a preferred embodiment, the two drill heads can be aligned with each other. Both drill heads can thus be approached and optimized with regard to the drilling on each other. The inventive method can thus be realized not only in that one of the two drill heads has a detection unit, but both.

Die Erfindung schafft auch eine Erdbohrvorrichtung mit einem Bohrkopf, bei dem eine Erfassungseinheit vorgesehen ist, die die Ausrichtung zumindest eines anderen Bohrkopfes erkennt. Ferner weist die Erdbohrvorrichtung eine Orientierungseinheit auf, mit der der Bohrkopf mit seiner Vortriebsrichtung zum anderen Bohrkopf ausrichtbar ist.The invention also provides an earth boring apparatus having a boring head in which a detection unit is provided which detects the alignment of at least one other boring head. Furthermore, the Erdbohrvorrichtung has an orientation unit with which the drill head can be aligned with its advancing direction to the other drill head.

In einer bevorzugten Ausführungsform weist die Erfassungseinheit eine Einheit zur Mustererkennung auf, mit der der andere Bohrkopf, der erkannt werden soll, leicht identifizierbar ist.In a preferred embodiment, the detection unit has a pattern recognition unit with which the other drill bit to be detected is easily identifiable.

Die Erfindung schafft auch eine Verwendung einer Erfassungseinheit in einem Bohrkopf, wobei der Bohrkopf für eine Bohrung in Erdreich ausgestaltet ist. Die Erfassungseinheit wird dazu verwendet, einen weiteren Bohrkopf zu erfassen und die Vortriebsrichtung des Bohrkopfs in Bezug auf den weiteren Bohrkopf auszurichten.The invention also provides a use of a detection unit in a drill head, wherein the drill head is designed for drilling in soil. The detection unit is used to detect a further drill head and to align the advancing direction of the drill head with respect to the further drill head.

Die vorstehenden Ausführungen stellen ebenso wie die nachfolgende Beschreibung beispielhafter Ausführungsformen keinen Verzicht auf bestimmte Ausführungsformen oder Merkmale dar.The above statements as well as the following description of exemplary embodiments do not represent a waiver of certain embodiments or features.

Die Erfindung wird nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Die einzige Zeichnung

Fig. 1
zeigt ein Einbringen einer Bohrung in das Erdreich mit zwei aufeinander zulaufenden Bohrköpfen.
The invention will be explained in more detail with reference to an embodiment shown in the drawing. The only drawing
Fig. 1
shows an introduction of a hole in the soil with two converging drill heads.

Fig. 1 zeigt ein Einbringen einer Bohrung in das Erdreich mittels zweier Bohrköpfe 1, 2. Die Bohrköpfe 1, 2 sind mit einem Bohrgestänge 3 bzw. Bohrstrang verbunden, das bzw. der aus einer Vielzahl miteinander verbundener Gestängeschüsse besteht. Dem Bohrverlauf entsprechend werden die Gestängeschüsse miteinander verbunden. Die Bohrköpfe 1, 2 werden mittels des Bohrgestänges 3 von einer an der Erdoberfläche angeordneten Antriebsvorrichtung 4 vorgetrieben und (temporär) rotierend angetrieben. Der rotierende Antrieb dient zum einen der Verbesserung des Vortriebs der Bohrköpfe 1, 2 im Erdreich und zum anderen wird dadurch in Verbindung mit der Ausbildung mindestens eines der beiden Bohrköpfe 1, 2 als Schrägbohrkopf eine Steuerungsfunktion erreicht. Bei dem Vorschieben des als Schrägbohrkopf ausgestalteten Bohrkopfs 1, 2 durch das Erdreich erzeugt die Schrägfläche des Bohrkopfs 1, 2 eine Ablenkung, deren Wirkung sich über einer vollständigen Umdrehung des Bohrkopfs 1, 2 ausgleicht. Werden die als Schrägbohrköpfe ausgestalteten Bohrköpfe 1, 2 demnach während des Vorschubs kontinuierlich rotierend angetrieben, bohrt die Erdbohrvorrichtung geradeaus. Ein Umsteuern der Erdbohrvorrichtung erfolgt, indem die Bohrköpfe 1, 2 in einer definierten Ausrichtung, d. h. einer bestimmten Lage der Schrägfläche der Bohrköpfe 1, 2 (der sogenannte "Rollwinkel") gestoppt wird und gleichzeitig weiter vorgeschoben wird. Die durch die Schrägfläche bewirkte Ablenkung führt dann zu einem bogenförmigen Bohrverlauf. Dieser wird fortgesetzt, bis die gewünschte neue Bohrrichtung erreicht ist. Daraufhin wird der Rotationsantrieb wieder zugeschaltet, um weiter geradeaus zu bohren. Fig. 1 shows an introduction of a hole in the soil by means of two drill heads 1, 2. The drill heads 1, 2 are connected to a drill pipe 3 or drill string, or consists of a plurality of interconnected rod sections. According to the drill course, the rod sections are connected to each other. The drill heads 1, 2 are driven by means of the drill string 3 from a arranged on the surface of the earth drive device 4 and (temporarily) driven in rotation. The rotating drive serves on the one hand to improve the propulsion of the drill heads 1, 2 in the ground and on the other hand is achieved in conjunction with the formation of at least one of the two drill heads 1, 2 as an oblique drill head a control function. During the advancement of the drill head 1, 2 designed as an inclined drill head through the ground, the inclined surface of the drill head 1, 2 generates a deflection, the effect of which compensates over a complete revolution of the drill head 1, 2. If the drill heads 1, 2 configured as inclined drill heads are thus driven to rotate continuously during the feed, the earth boring device drills straight ahead. A reversal of the Erdbohrvorrichtung takes place by the drill heads 1, 2 in a defined orientation, ie a certain position of the inclined surface of the drill heads 1, 2 (the so-called "roll angle") is stopped and simultaneously advanced further. The deflection caused by the inclined surface then leads to an arcuate course of the bore. This is continued until the desired new drilling direction is reached. Then the rotary drive is switched on again to drill straight ahead.

In dem in der Fig. 1 gezeigten Ausführungsbeispiel weist jeder der beiden Bohrköpfe 1, 2 eine Radareinheit 5 auf, die hinter bzw. in der Schrägfläche der Bohrköpfe 1, 2 angeordnet ist. Dadurch wird ein Erfassungsbereich definiert, der (teilweise) dem Bohrkopf 1, 2 vorauseilt. Die Bohrköpfe 1, 2 weisen jeweils eine mit der Radareinheit 5 funktionell verbundene Erfassungseinheit 6 auf.In the in the Fig. 1 In the embodiment shown, each of the two drill heads 1, 2 has a radar unit 5, which is arranged behind or in the oblique surface of the drill heads 1, 2. This defines a detection area that (partially) leads the drill head 1, 2. The drill heads 1, 2 each have a detection unit 6 operatively connected to the radar unit 5.

Bei der Radareinheit 5 kann es sich um ein als kombiniertes Front- und Seitenradar ausgestaltetes Radar handeln, welches elektromagnetische Wellen gebündelt als Primärsignal aussendet und die von Objekten reflektierten Signale als Sekundärsignale empfängt.The radar unit 5 may be a radar configured as a combined front and side radar, which emits bundled electromagnetic waves as a primary signal and receives the signals reflected by objects as secondary signals.

Die Erfassungseinheit 6 wertet die reflektierten (Sekundär-)Signale der Radareinheit 5 aus, um Informationen über die Objekte zu erhalten, wobei insbesondere die äußere Kontur der erfassten Objekte ermittelt wird. Hierdurch können insbesondere die von der Bohrkopffront des jeweils anderen Bohrkopfs 1, 2 reflektierten Radarwellen, die mittels einer Mustererkennungssoftware, die in einer Rechnereinheit 7 im jeweiligen Bohrkopf 1, 2 installiert ist, ausgewertet werden. Mittels der Mustererkennungssoftware kann die Neigung, Verrollung, Seitenabweichung und/oder Höhenabweichung des anderen Bohrkopfs 1, 2 erfasst werden. Für den Vergleich ist im Speicher der Rechnereinheit 7 ein oder mehrere Vergleichsmuster für den Bohrkopf 1, 2 abgespeichert.The detection unit 6 evaluates the reflected (secondary) signals of the radar unit 5 in order to obtain information about the objects, wherein in particular the outer contour of the detected objects is determined. In this way, in particular, the radar waves reflected by the drill head front of the respective other drill head 1, 2 can be evaluated by means of a pattern recognition software which is installed in a computer unit 7 in the respective drill head 1, 2. By means of the pattern recognition software, the inclination, roll, lateral deviation and / or height deviation of the other drill head 1, 2 can be detected. For comparison, one or more comparison patterns for the drill head 1, 2 are stored in the memory of the computer unit 7.

Die Vortriebsrichtung mindestens eines der beiden Bohrköpfe 1, 2 wird angepasst, wenn eine vorbestimmte Abweichung zwischen dem erfassten Muster und dem oder den Vergleichsmuster(n) überschritten wird. Mit der in der Fig. 1 dargestellten Ausführungsform sind zwei Anpassungen möglich. Zum einen kann eine automatische Anpassung durchgeführt werden, indem in Reaktion auf den Vergleich der Rechnereinheit 7 Befehle generiert werden, die an den Maschinenleitstand der Erdbohrvorrichtung (Antriebsvorrichtung 4) übermittelt werden, um die Vortriebsrichtung an einer Orientierungseinheit 8 der Antriebsvorrichtung 4 mindestens eines der beiden Bohrköpfe 1, 2 anzupassen. Die Anpassung kann auf einem Display der Antriebsvorrichtung 4 angezeigt werden. Es ist aber auch möglich, dass das Ergebnis des Vergleichs - ohne automatische Anpassung - einem Maschinenführer der Antriebsvorrichtung 4 eines der beiden Bohrköpfe 1, 2 beispielsweise auf einem Display der Antriebsvorrichtung 4 angezeigt wird, und dass der Maschinenführer selbst mittels einer Orientierungseinheit 8 die Anpassung der Vortriebsrichtung vornimmt.The advancing direction of at least one of the two drill heads 1, 2 is adjusted when a predetermined deviation between the detected pattern and the comparison pattern (s) is exceeded. With the in the Fig. 1 illustrated embodiment, two adjustments are possible. On the one hand, an automatic adaptation can be carried out by generating commands in response to the comparison of the computer unit 7, which are transmitted to the machine control station of the earth drilling device (drive device 4), about the direction of advance on an orientation unit 8 of the drive device 4 of at least one of the two drill heads 1, 2 adapt. The adjustment may be on a display of the drive device 4 will be displayed. But it is also possible that the result of the comparison - without automatic adjustment - a machine operator of the drive device 4 of the two drill heads 1, 2 is displayed for example on a display of the drive device 4, and that the machine operator himself by means of an orientation unit 8, the adaptation of Propulsion direction performs.

Claims (10)

Verfahren zum Einbringen einer Bohrung in das Erdreich mit zwei aufeinander zulaufenden Bohrköpfen (1, 2), gekennzeichnet durch Erfassen eines der beiden Bohrköpfe (1, 2) mittels einer Erfassungseinheit (6) am anderen Bohrkopf (1, 2) und Anpassen der Vortriebsrichtung mindestens eines der Bohrköpfe (1, 2) in Bezug auf den anderen Bohrkopf (1, 2).A method for introducing a hole in the ground with two converging drill heads (1, 2), characterized by detecting one of the two drill heads (1, 2) by means of a detection unit (6) on the other drill head (1, 2) and adjusting the propulsion direction at least one of the drill heads (1, 2) with respect to the other drill head (1, 2). Verfahren nach Anspruch 1, gekennzeichnet durch Aussenden und Empfangen von elektromagnetischer Strahlung mittels der Erfassungseinheit (6).A method according to claim 1, characterized by emitting and receiving electromagnetic radiation by means of the detection unit (6). Verfahren nach Anspruch 1 oder 2, gekennzeichnet durch Erfassen der Neigung.Method according to claim 1 or 2, characterized by detecting the inclination. Verfahren nach einem der Ansprüche 1 bis 3, gekennzeichnet durch Erfassen der Verrollung.Method according to one of claims 1 to 3, characterized by detecting the rolling. Verfahren nach einem der Ansprüche 1 bis 4, gekennzeichnet durch Erfassen der Höhen- oder Seitenabweichung.Method according to one of claims 1 to 4, characterized by detecting the height or side deviation. Verfahren nach einem der Ansprüche 1 bis 5, gekennzeichnet durch Vergleichen eines von dem Bohrkopf (1, 2) erfassten Musters mit einem Vergleichsmuster.Method according to one of claims 1 to 5, characterized by comparing a pattern detected by the drill head (1, 2) with a comparison pattern. Verfahren nach einem der Ansprüche 1 bis 6, gekennzeichnet durch Ausrichten der beiden Bohrköpfe (1, 2) aufeinander zu.Method according to one of claims 1 to 6, characterized by aligning the two drill heads (1, 2) towards each other. Erdbohrvorrichtung mit einem Bohrkopf (1, 2), insbesondere zum Durchführen eines Verfahrens gemäß den Ansprüchen 1 bis 7, dadurch gekennzeichnet, dass eine Erfassungseinheit (6) vorgesehen ist, die die Ausrichtung zumindest eines anderen Bohrkopfs (1, 2) erkennt und eine Orientierungseinheit (8) vorhanden ist, mit der der Bohrkopf (1, 2) mit seiner Vortriebsrichtung zum anderen Bohrkopf (1, 2) ausrichtbar ist.Earth drilling device with a drill head (1, 2), in particular for carrying out a method according to claims 1 to 7, characterized in that a detection unit (6) is provided which detects the alignment of at least one other drill head (1, 2) and an orientation unit (8) is present, with which the drill head (1, 2) with its advancing direction to the other drill head (1, 2) is alignable. Erdbohrvorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass die mit der Erfassungseinheit (6) ermittelten Daten für eine Mustererkennung auswertbar sind.Earth drilling device according to claim 8, characterized in that the data determined by the detection unit (6) can be evaluated for a pattern recognition. Verwendung einer Erfassungseinheit in einem Bohrkopf, der eine Bohrung in Erdreich erstellen kann, dadurch gekennzeichnet, dass die Erfassungseinheit dazu verwendet wird, einen weiteren Bohrkopf zu erfassen und die Vortriebsrichtung des Bohrkopfs in Bezug auf den weiteren Bohrkopf auszurichten.Using a detection unit in a drill head, which can create a hole in soil, characterized in that the detection unit is used to detect a further drill head and to align the advancing direction of the drill head with respect to the further drill head.
EP17000323.0A 2016-03-03 2017-03-02 Method for making a borehole in the soil and soil boring device and use Active EP3214260B1 (en)

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