EP1974122B1 - Device and method for producing foundation elements in the ground - Google Patents
Device and method for producing foundation elements in the ground Download PDFInfo
- Publication number
- EP1974122B1 EP1974122B1 EP07722760A EP07722760A EP1974122B1 EP 1974122 B1 EP1974122 B1 EP 1974122B1 EP 07722760 A EP07722760 A EP 07722760A EP 07722760 A EP07722760 A EP 07722760A EP 1974122 B1 EP1974122 B1 EP 1974122B1
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- European Patent Office
- Prior art keywords
- nozzle
- bore
- measuring
- jet
- measuring device
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Images
Classifications
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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
- E21B47/00—Survey of boreholes or wells
- E21B47/08—Measuring diameters or related dimensions at the borehole
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
-
- 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
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
Definitions
- the present invention relates to an apparatus and a method for producing and measuring jet columns in a subsurface, comprising a drilling and nozzle linkage for producing a borehole and a jet column in the region of the borehole.
- the method for producing jet columns is a method of special civil engineering in which a high-energy high-pressure jet of water and / or binder emerges from a rotating drilling and nozzle linkage, thereby destroying the surrounding soil in its storage structure and subsequently by adding the water and / or the binder is mortared.
- various methods are used which differ, for example, in the number and / or arrangement of the nozzles in the drilling and nozzle linkage and by a cutting medium used. Which method is advantageous in a particular case depends on geological conditions such as particle size distribution, storage density, shear strength, state shape, organic constituents and compressive strength of the soil.
- a drilling and nozzle jet linkage is for example from the DE 198 49 786 A1 known.
- the size of a generated jet column depends not only on the nature of the soil from a pressure in front of the nozzle and a diameter of the nozzle.
- nozzle jet columns or several, preferably overlapping, jet columns are produced by means of the nozzle jet technique.
- the size of a single jet column depends on a variety of factors that are not always predictable with sufficient accuracy. It is therefore known to produce so-called sample columns in order to determine certain parameters influencing the diameter. The diameter achieved in the sample column can then be used to plan further designs.
- a mechanical screen for example a mechanical screen, a hydraulic screen, a caliber probe, and non-mechanical measurement methods, such as a level measuring method, a range measurement with hydrophone method, a range determination by maturity measurement or a float method. These methods are usually carried out on a not yet hardened jet body.
- checks on a hardened jet column by exposing the sample column or by exploratory drilling are known.
- measuring devices are introduced into the borehole after a removal of the drilling and nozzle linkage.
- the simple mechanical measuring screen consists for example of three measuring arms, which create by a folding mechanism to a borehole wall.
- the size of the borehole can be determined on the basis of the folding angle.
- the mechanical screen is preferably Folded down through the well immediately after the production of the nozzle jet column into the fresh, not yet hardened jet column.
- the measuring screen is opened by means of a cable pull mechanism. The opening angle of the measuring screen can be determined, for example, via the path of the cable pull.
- a measuring device which uses a flexible probe element.
- the probe element is extended after lowering the measuring device from the measuring device at an angle of about 90 ° to this until it hits the Bohrwandung. Based on the range of the extended probe element, the diameter of the jet column is detectable.
- the EP 0 940 559 A2 a generic device in which a measuring line with a float, which is entrained by the flow of a high-pressure injection jet, so that the length of the measuring line corresponds to the effective length of the high-pressure injection jet. From this, it should be concluded that the diameter of a manufactured jet column. The measurement of the nozzle jet column can thus take place only during the high-pressure injection operation, and the measurement result is influenced by the pressure prevailing in the high-pressure injection jet. This leads to a less flexible and afflicted with measurement uncertainty surveying process.
- the device for producing and measuring jet columns in a subsoil comprises a drilling and nozzle linkage for producing a borehole and a jet column in the area of the borehole and a measuring device for measuring the jet column, in particular the diameter of the jet column, the measuring device at least partially into the Drill and nozzle linkage is integrated.
- the measuring device on at least one longitudinally rigid sensing element which is movable between a retracted into the drilling and nozzle rod position and an extended position.
- longitudinally stiff here denotes feeler elements that are suitable other than ropes or the like for transmitting a certain compressive force. This makes it possible to extend the probe element without having to be pulled at the front (leading) end of the probe element. Rather, this front end of the probe element is intended to be brought into abutment with the wall of a manufactured nozzle jet column.
- the probe element In the retracted position of the probe element is ensured that this does not interfere with the work during production of the borehole and a jet column.
- the probe element By extending the probe element, the size of the nozzle jet column produced can then be measured.
- the probe element is preferably extended as long as the nozzle jet column has not yet hardened. The probe element is thereby moved radially through the still liquid nozzle jet column.
- a predominantly mechanical measuring device is in the context of the present invention due to their low susceptibility to an advantage.
- the mechanical measuring device can be combined with individual electronic elements. By integrating the mechanical measuring device into the drilling and nozzle linkage, it is possible to measure the jet stream column without removing the drilling and nozzle linkage. The jet column can therefore be measured quickly and reliably.
- the probe element consists at least in sections of one or a plurality of CFRP and / or GFRP rods.
- the probe element is at least partially rigid, but flexible, wherein the flexibility is preferably such that the probe element can be deflected within the drilling and nozzle frame by an angle of approximately 90 °.
- the flexible probe element preferably extends in the retracted position substantially along an axis of the drilling and nozzle linkage. For measuring, the feeler element emerges from the drilling and nozzle linkage at an angle of approximately 90 °. As a result, a space-saving placement of the probe element in the drill nozzle linkage is possible.
- the probe element is equipped with a sensor, in particular a pressure sensor and / or an inclinometer.
- the pressure sensor is arranged, for example, on a wall of the borehole contacting end of the probe element.
- the borehole wall is reliably recognizable even with a relatively loose soil.
- the drilling and nozzle linkage at least one nozzle jet nozzle and at least one drill bit, wherein the probe element between the nozzle jet nozzle and the drill bit is arranged.
- Such an arrangement is particularly advantageous due to a required installation space and / or a connection of the measuring element with the drilling and nozzle linkage.
- the measuring device comprises actuating means for the probe element.
- the probe element is extended until, for example, the resistance due to the contact of the probe element with the borehole wall opposes the movement and / or a pressure sensor signals an end of a movement.
- the actuating means a particularly simple movement of the probe element is possible.
- the actuating means can be designed in the context of the present invention in various ways. In this case, an embodiment has proven to be advantageous in which the actuating means have a provided within the drilling and nozzle rod actuating piston. In an alternative embodiment, the actuating means on an electric drive provided within the drilling and nozzle linkage, which preferably drives drive means, in particular at least one drive roller, wherein a transmission is particularly preferably provided between the drive means and the electric drive.
- the measuring device has at least one measuring element for measuring a displacement path and / or an inclination of the probe element and / or the actuating means. Based on the displacement path and / or the inclination of the probe element, a diameter of the nozzle jet column can be determined.
- the measuring device can, for example, a Comprise high-performance magnets, which is integrated in a member for displacing the probe element, wherein a detection device is arranged parallel to the stroke region of the displacement element, which responds to a magnetic field of the high-performance magnet.
- the measuring device may, for example, also have a counter (eg incremental encoder) which detects the number of revolutions of the drive roller (s).
- the drilling or nozzle linkage preferably has a pressure fluid channel, in particular a compressed air channel, which communicates with at least one nozzle jet air nozzle and / or with an outlet opening of the probe element from the drilling and nozzle linkage and / or with at least one side of the actuating piston.
- the pressure fluid channel can fulfill a number of tasks, especially since the production and the measurement of the jet column preferably do not take place simultaneously.
- a pressure fluid channel used for the jet nozzle air nozzle is therefore preferably also suitable for flushing the outlet opening of the probe element from the drilling and nozzle linkage and / or possibly a movement of the probe element.
- At least one valve is preferably provided, which is arranged so as to interrupt the connection between the pressure fluid channel and the actuating piston and / or the connection between the pressure fluid channel and the jet nozzle. This is up Particularly favorable manner, a use of a common pressure fluid channel by the actuating piston and the jet nozzle air jet feasible. However, it is also conceivable to provide the valve only for controlling the movement of the actuating piston.
- the pressure fluid channel is connected via a switching means alternately to a pneumatic and a hydraulic supply.
- a suitable supply i. a suitable working fluid such as compressed air or hydraulic fluid can be selected.
- the measuring device has a power supply integrated into the drilling and nozzle frame.
- the power supply is well protected in the drill and nozzle linkage against external interference.
- the power supply feeds various components of the measuring device such as sensors, solenoid valves or the like.
- the power supply takes place for example by means of integrated cordless tools, so that can be dispensed with a wiring at least partially.
- the measuring device has a data storage device integrated into the drilling and nozzle linkage.
- data acquired during the measurement of the jet column can be written to the data storage device. This data can be read, for example, when extending the drilling and nozzle linkage.
- the drilling and nozzle linkage has an integrated data interface, which is preferably designed for contactless data transmission, in particular by means of infrared, Bluetooth or the like.
- the data collected by the measuring device can be transmitted directly to a surface and evaluated there with suitable devices. This allows, for example, a direct rework without a re-introduction of the drilling and nozzle linkage.
- the device comprises a tilt sensor, wherein at least the inclination of the drill and nozzle linkage by means of the tilt sensor is readable.
- a tilt sensor can be detected in a suitable manner, the actual course of the borehole.
- the inclination can be shown, for example, also in relation to the north direction.
- the vertical course of the borehole can be included in an evaluation of the data of the jet column and evaluated with each other. If there is no direct transmission of the measured data to the surface, it is advantageous to use the inclinometer to detect and store a slope profile along the borehole.
- the method for producing and measuring a nozzle jet column in a substrate comprises the following steps: creating a borehole in a subsoil using the drilling and nozzle linkage according to the invention, creating a jet column in the area of the borehole using the drill and nozzle linkage, measuring the jet column below Use of the (mechanical) measuring device, without the drilling and nozzle linkage has been previously pulled out of the hole. By measuring without pulling out of the drill and nozzle linkage a fast and reliable quality control is possible. Evaluation of the measurement data takes place either directly by transferring the data to the surface (eg also by radio) and / or indirectly by storing the data and reading out the data after the drill and nozzle linkage has been pulled out of the borehole is.
- FIG. 1 schematically shows a cross section through an inventive drill and nozzle linkage 1 according to a first embodiment.
- the drill and nozzle linkage includes an in FIG. 2 illustrated in detail drill collar 12, a in FIG. 3 in detail shown area with a nozzle for applying a jet of jet air, in the FIGS. 4A, 4B and 5 shown in detail area for the measuring device 4, a in FIG. 6 in detail illustrated connection area 5 and a in FIG. 7 shown in detail intermediate area.
- FIG. 2 schematically shows the drill bit 12, which is connectable to a transition part 12 '.
- a standard thread 22 with male and female part 24 is provided in the drill bit 12 and the transition part 12 '.
- the drill bit 12 has opening 26 for the drilling fluid 2.
- a standard thread 28 By means of a standard thread 28, the transition part 12 'with the subsequent part of in Fig. 1 shown drilling and nozzle linkage 1 connectable.
- other threads and / or other connection elements are conceivable instead of standard threads.
- FIG. 3 schematically shows a nozzle 13 for applying a high-pressure suspension 3 under high pressure.
- the working fluid for the support of the high-pressure suspension is preferably air.
- the working fluid is located in the pressure fluid channel 30.
- the channel of the working fluid interacts with a multi-part shut-off plane 32, 34.
- the channel of the working fluid is opened or closed depending on the pressure in the pressure fluid channel 30 and a spring 38 or possibly by a suitable valve.
- the pressure fluid channel 30 is in dependence of a step water or air for a hydraulic or pneumatic supply.
- a pneumatic system for opening and closing the channel of the Working fluids used At high pressures in the pressure fluid channel 30, the horizontal outlet of the channel is closed with working fluid.
- the pressurized fluid channel 30 can then be used to supply the measuring device 14.
- FIG. 4A schematically shows the area C according to FIG. 1 in which the mechanical measuring device 14 is located.
- the measuring device 14 comprises a feeler element 40, which is movable by means of an actuating piston 41.
- the feeler element 40 is guided along a wall 42 comprising a deflection 43.
- the probe element 40 is deflected by approximately 90 ° from the axial direction of the drilling and nozzle linkage.
- the probe element 40 exits at a point 44 from the drilling and nozzle linkage.
- the opening 44 is preferably formed with suitable seals to prevent ingress of dirt. Supporting the opening 44 may be in communication with the pressure fluid channel 30, so that the probe element 40 is washed with the pressure fluid to prevent a protective entry,
- the movement of the probe element 40 by means of the actuating piston 41 in the present embodiment preferably takes place pneumatically or hydraulically.
- the working fluid preferably compressed air, is introduced into the pressure fluid channel 30 and acts in the illustrated step on the actuating pin 41. If the pressure for an actuation of the actuating piston 41 is not sufficient, the probe element 40 remains in the retracted position. By closing a valve 45, the working fluid acts on the actuating bolt 41 via the pressure fluid channel 30 in the reverse direction. As a result, the feeler element 40 can be moved from an extended position into the retracted position.
- a suitable element for example by means of spring force is conceivable.
- FIG. 4B shows a section through the drill string along the line AA according to FIG. 4A , As in FIG. 4B clearly visible is a cross-sectional area 46 is provided in which, for example, a power supply, an inclinometer, a programmable controller for the measuring device or the like can be integrated.
- the power supply is preferably by battery elements.
- FIG. 5 schematically shows the measuring device 14, wherein the sensing element 40 is in an at least partially extended position.
- the sensing element 40 is shown as a steel spring 400, it consists according to the invention at least in sections of a fiber-reinforced material, namely one or a plurality of CFK and / or GRP rods.
- the probe element 40 moves in the unhardened nozzle jet column, not shown.
- the probe element 40 is designed such that the weight of the probe element 40 is at least partially compensated by the buoyancy force.
- the jet column material may have a specific gravity that is significantly greater than that of water (eg, greater than 1.5t / m 3 ). In a probe element 40, a drop is thereby prevented by design.
- the probe element 40 can be extended, for example, up to 2m or more.
- FIG. 6 schematically shows a connection portion 15 of the drilling and nozzle linkage.
- the connection region 15 comprises a connection 51 for supplying a high-pressure suspension 3.
- the connection region 5 further comprises a hose 52 for supplying the drilling fluid 2.
- a hydraulic fluid such as water or compressed air
- the pressure fluid channel 30 can be connected alternately to a pneumatic supply 54 or a hydraulic supply 55. Due to the different pressures with which the working fluids operate, a supply of the opening and closing mechanism for the nozzle 13 and the probe element 40 via the same pressure fluid channel 30 can take place.
- FIG. 7 schematically shows an intermediate region E of the drilling and nozzle rod 1 according to FIG. 1 ,
- the drilling and nozzle linkage comprises a channel in which, as explained above, the high-pressure suspension 3 is guided.
- the drilling and nozzle linkage further includes the pressure fluid passage 30 which is connected to a pneumatic or hydraulic supply.
- a channel for the drilling fluid 2 is provided.
- FIG. 8 schematically shows various steps I - VIII of a method for producing and measuring a nozzle jet column according to the invention in a subsurface.
- a suitable drilling starting point is first measured.
- the drilling and nozzle linkage at the new Bohransatz Vietnamese is introduced.
- the drilling and nozzle linkage is lowered by drilling to a desired depth, while drill-accompanying the course of the borehole can be measured by the built-in inclination sensors.
- a nozzle jet column is generated in the region of the borehole in a working step IV.
- steps V and VI the diameter of the generated jet column is measured at different heights.
- the scanning element 40 shown in the preceding figures is moved in the not yet cured jet column.
- the probe element 40 is here advantageously designed such that it is kept substantially horizontal due to the buoyancy, the inherent rigidity and the dead weight.
- step VII the drill and nozzle linkage is pulled out. This data, which were stored during the drilling and surveying in steps V and VI, read out. Based on these data, suitable statements can be made about the nature of the soil and the dependent condition of a generated jet column. These can be advantageously used for a project following step 8.
- FIG. 9 and 10 A further embodiment of the device 1 according to the invention is shown schematically in FIG Fig. 9 and 10 shown.
- the structure and operation of this embodiment corresponds in principle to the embodiment described above, unless otherwise stated below.
- the Fig. 9 and 10 shown embodiment is particularly characterized by the fact that is provided as an actuating means for the probe element 40 is not shown in detail electric drive, which drives the probe element 40 via two drive rollers 41 '.
- the drive rollers 41 'and the associated electric motor can also be arranged close to the outlet opening 44, resulting in a particularly stable transmission of force between drive rollers 41' and 44 touch element.
- the present embodiment allows in a particularly simple manner, that the outlet opening 44 is in communication with the pressure fluid channel 30, so that the outlet opening 44 flushes continuously with pressurized fluid is, whereby the ingress of contaminants along the probe element 40 can be largely avoided.
- counting elements may be provided which detect the revolutions of the drive rollers 41 '. These may be, for example, so-called incremental encoders.
- the use of an electric drive makes it possible to dispense with the provision of a pressure sensor and inclination sensor in the feeler element 40, since it can be concluded during the advancement of the feeler element from an increase in the current absorbed by the electric drive that the feeler element reaches the wall Has.
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Abstract
Description
Die vorliegende Erfindung betrifft eine Vorrichtung und ein Verfahren zum Herstellen und Vermessen von Düsenstrahlsäulen in einem Untergrund, umfassend ein Bohr- und Düsgestänge zur Erzeugung eines Bohrlochs sowie einer Düsenstrahlsäule im Bereich des Bohrlochs.The present invention relates to an apparatus and a method for producing and measuring jet columns in a subsurface, comprising a drilling and nozzle linkage for producing a borehole and a jet column in the region of the borehole.
Das Verfahren zum Herstellen von Düsenstrahlsäulen ist ein Verfahren des Spezialtiefbaus, bei dem ein energiereicher Hochdruckstrahl aus Wasser und/oder Bindemittel aus einem sich drehenden Bohr- und Düsgestänge austritt, dabei den umliegenden Boden in seiner Lagerungsstruktur zerstört und anschließend durch Zugabe des Wassers und/oder des Bindemittels vermörtelt.The method for producing jet columns is a method of special civil engineering in which a high-energy high-pressure jet of water and / or binder emerges from a rotating drilling and nozzle linkage, thereby destroying the surrounding soil in its storage structure and subsequently by adding the water and / or the binder is mortared.
Für das Lösen des Bodens und das Einbringen des Wassers und/oder des Bindemittels werden verschiedene Verfahren angewendet, die sich beispielsweise in der Anzahl und/oder Anordnung der Düsen in dem Bohr- und Düsgestänge sowie durch ein verwendetes Schneidmedium unterscheiden. Welches Verfahren im Einzelfall von Vorteil ist, hängt von geologischen Gegebenheiten wie Kornverteilung, Lagerungsdichte, Scherfestigkeit, Zustandsform, organische Bestandteile und Druckfestigkeit des Bodens ab. Ein Bohr- und Düsenstrahlgestänge ist beispielsweise aus der
Die Größe einer erzeugten Düsenstrahlsäule hängt neben der Beschaffenheit des Bodens von einem Druck vor der Düse sowie von einem Durchmesser der Düse ab.The size of a generated jet column depends not only on the nature of the soil from a pressure in front of the nozzle and a diameter of the nozzle.
Je nach Anwendungsgebiet, werden mittels der Düsenstrahltechnik einzelne Düsenstrahlsäulen oder mehrere, vorzugsweise einander überlappende, Düsenstrahlsäulen erzeugt. Die Größe einer einzelnen Düsenstrahlsäule hängt von einer Vielzahl an Einflussgrößen ab, welche nicht immer mit einer ausreichenden Genauigkeit vorhersagbar sind. Es ist daher bekannt, sog. Probesäulen herzustellen, um bestimmte, den Durchmesser beeinflussende Parameter zu bestimmen. Der in der Probesäule erzielte Durchmesser kann dann der Planung weiterer Ausführungen zugrunde gelegt werden.Depending on the field of application, individual nozzle jet columns or several, preferably overlapping, jet columns are produced by means of the nozzle jet technique. The size of a single jet column depends on a variety of factors that are not always predictable with sufficient accuracy. It is therefore known to produce so-called sample columns in order to determine certain parameters influencing the diameter. The diameter achieved in the sample column can then be used to plan further designs.
Um den Durchmesser der Probesäule und/oder allgemein einer Düsenstrahlsäule zu ermitteln, sind verschiedene Verfahren bekannt, beispielsweise ein mechanischer Messschirm, ein hydraulischer Messschirm, eine Kalibermesssonde, sowie nicht mechanische Messverfahren, beispielsweise ein Pegelmessverfahren, eine Reichweitenmessung mit Hydrophonverfahren, eine Reichweitenermittlung durch Laufzeitenmessung oder ein Schwimmkörperverfahren. Diese Verfahren werden im Regelfall an einem noch nicht erhärteten Düsenstrahlkörper durchgeführt. Daneben sind Überprüfungen an einer erhärteten Düsenstrahlsäule durch Freilegen der Probesäule oder durch Erkundungsbohrungen bekannt.In order to determine the diameter of the sample column and / or a nozzle jet column in general, various methods are known, for example a mechanical screen, a hydraulic screen, a caliber probe, and non-mechanical measurement methods, such as a level measuring method, a range measurement with hydrophone method, a range determination by maturity measurement or a float method. These methods are usually carried out on a not yet hardened jet body. In addition, checks on a hardened jet column by exposing the sample column or by exploratory drilling are known.
Mechanische Messverfahren sind im allgemeinen aufgrund ihrer einfachen Bauweise sowie ihrer geringen Störanfälligkeit zu bevorzugen. Zur Durchmesserbestimmung werden dabei - nach einem Entfernen des Bohr- und Düsgestänges - Messeinrichtung in das Bohrloch eingebracht. Der einfache mechanische Messschirm besteht beispielsweise aus drei Messarmen, die sich durch einen Klappmechanismus an eine Bohrlochwandung anlegen. Die Größe des Bohrlochs ist anhand des Klappwinkels bestimmbar. Der mechanische Messschirm wird vorzugsweise unmittelbar nach dem Herstellen der Düsenstrahlsäule zusammengeklappt durch das Bohrloch bis in die frische, noch nicht erhärtete Düsenstrahlsäule abgelassen. Durch einen Seilzugmechanismus wird der Messschirm geöffnet: Der Öffnungswinkel des Messschirms ist beispielsweise über den Weg des Seilzugs bestimmbar.Mechanical measuring methods are generally preferred because of their simple construction and their low susceptibility to interference. To determine the diameter, measuring devices are introduced into the borehole after a removal of the drilling and nozzle linkage. The simple mechanical measuring screen consists for example of three measuring arms, which create by a folding mechanism to a borehole wall. The size of the borehole can be determined on the basis of the folding angle. The mechanical screen is preferably Folded down through the well immediately after the production of the nozzle jet column into the fresh, not yet hardened jet column. The measuring screen is opened by means of a cable pull mechanism. The opening angle of the measuring screen can be determined, for example, via the path of the cable pull.
Daneben ist eine Messeinrichtung bekannt, welche ein flexibles Tastelement verwendet. Das Tastelement wird nach dem Absenken der Messeinrichtung aus der Messeinrichtung in einem Winkel von ca. 90° zu dieser ausgefahren bis es auf die Bohrwandung trifft. Anhand der Reichweite des ausgefahrenen Tastelements ist der Durchmesser der Düsenstrahlsäule erfassbar.In addition, a measuring device is known which uses a flexible probe element. The probe element is extended after lowering the measuring device from the measuring device at an angle of about 90 ° to this until it hits the Bohrwandung. Based on the range of the extended probe element, the diameter of the jet column is detectable.
Die Verfahren haben jedoch den Nachteil gemeinsam, dass ein Bohr- und Düsgestänge zunächst entfernt werden muss, um eine Messeinrichtung in das Bohrloch einzuführen. Aufgrund des damit verbundenen Zeitaufwands ist eine kontinuierliche Überwachung der Qualität einzelner Düsenstrahlsäulen nur in bestimmten Anwendungsfällen sinnvoll. Zudem kann das Herausnehmen des Bohr- und Düsgestänges dazu führen, dass das Bohrloch zusammenfällt und die anschließend eingeführte Messeinrichtung nicht bis zu der Düsenstrahlsäule eingeführt werden kann.The methods, however, have the common drawback that a drilling and nozzle linkage must first be removed in order to introduce a measuring device into the borehole. Due to the time involved, a continuous monitoring of the quality of individual jet columns is only useful in certain applications. In addition, the removal of the drilling and nozzle linkage can cause the borehole to collapse and the subsequently introduced measuring device can not be introduced to the jet column.
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Ferner offenbart die
Ferner offenbart die
Es ist daher Aufgabe der vorliegenden Erfindung, eine Vorrichtung und ein Verfahren zum Herstellen und Vermessen von Düsenstrahlsäulen in einem Untergrund zu schaffen, wobei eine Qualität der Düsenstrahlsäulen flexibel und zuverlässig überwachbar und damit auch besser sicherbar ist.It is therefore an object of the present invention to provide an apparatus and a method for producing and measuring jet columns in a subsurface, wherein a quality of the jet columns is flexible and reliable monitorable and therefore also safer.
Diese Aufgabe wird durch den Gegenstand der Ansprüche 1 und 17 gelöst.This object is solved by the subject matter of
Erfindungsgemäß umfasst die Vorrichtung zum Herstellen und Vermessen von Düsenstrahlsäulen in einem Untergrund ein Bohr- und Düsgestänge zur Erzeugung eines Bohrlochs sowie einer Düsenstrahlsäule im Bereich des Bohrlochs und eine Messeinrichtung zum Vermessen der Düsenstrahlsäule, insbesondere des Durchmessers der Düsenstrahlsäule, wobei die Messeinrichtung zumindest teilweise in das Bohr- und Düsgestänge integriert ist.According to the invention, the device for producing and measuring jet columns in a subsoil comprises a drilling and nozzle linkage for producing a borehole and a jet column in the area of the borehole and a measuring device for measuring the jet column, in particular the diameter of the jet column, the measuring device at least partially into the Drill and nozzle linkage is integrated.
Ferner weist die Messeinrichtung erfindungsgemäß mindestens ein längssteifes Tastelement auf, das zwischen einer in das Bohr- und Düsgestänge eingefahrenen Position und einer ausgefahrenen Position verfahrbar ist ist. Der Begriff "längssteif" kennzeichnet dabei Tastelemente, die anders als Seile oder dergleichen zur Übertragung einer gewissen Druckkraft geeignet sind. Hierdurch wird ermöglicht, das Tastelement auszufahren, ohne dass am vorderen (vorlaufenden) Ende des Tastelements gezogen werden muss. Vielmehr ist dieses vordere Ende des Tastelements dazu vorgesehen, mit der Wandung einer hergestellten Düsenstrahlsäule in Anlage gebracht zu werden.Furthermore, the measuring device according to the invention on at least one longitudinally rigid sensing element which is movable between a retracted into the drilling and nozzle rod position and an extended position. The term "longitudinally stiff" here denotes feeler elements that are suitable other than ropes or the like for transmitting a certain compressive force. This makes it possible to extend the probe element without having to be pulled at the front (leading) end of the probe element. Rather, this front end of the probe element is intended to be brought into abutment with the wall of a manufactured nozzle jet column.
In der eingefahrenen Position des Tastelements wird sichergestellt, dass dieses während eines Erzeugen des Bohrlochs und einer Düsenstrahlsäule die Arbeit nicht störend beeinflusst. Durch Ausfahren des Tastelements ist anschließend die Größe der hergestellten Düsenstrahlsäule messbar. Das Tastelement wird vorzugsweise ausgefahren, solange die Düsenstrahlsäule noch nicht erhärtet ist. Das Tastelement wird dabei radial durch die noch flüssige Düsenstrahlsäule bewegt.In the retracted position of the probe element is ensured that this does not interfere with the work during production of the borehole and a jet column. By extending the probe element, the size of the nozzle jet column produced can then be measured. The probe element is preferably extended as long as the nozzle jet column has not yet hardened. The probe element is thereby moved radially through the still liquid nozzle jet column.
Eine überwiegend mechanische Messeinrichtung ist im Rahmen der vorliegenden Erfindung aufgrund ihrer geringen Störanfälligkeit von Vorteil. Die mechanische Messeinrichtung kann jedoch mit einzelnen elektronischen Elementen kombiniert sein. Durch die Integration der mechanischen Messeinrichtung in das Bohr- und Düsgestänge ist ein Vermessen der Düsenstrahlsäule ohne Entnahme des Bohr- und Düsgestänges möglich. Die Düsenstrahlsäule kann daher schnell und zuverlässig vermessen werden.A predominantly mechanical measuring device is in the context of the present invention due to their low susceptibility to an advantage. However, the mechanical measuring device can be combined with individual electronic elements. By integrating the mechanical measuring device into the drilling and nozzle linkage, it is possible to measure the jet stream column without removing the drilling and nozzle linkage. The jet column can therefore be measured quickly and reliably.
Erfindungsgemäß besteht das Tastelement zumindest abschnittsweise aus einem oder einer Mehrzahl von CFK- und/oder GFK-Stäben.According to the invention, the probe element consists at least in sections of one or a plurality of CFRP and / or GFRP rods.
In einer bevorzugten Ausführungsform ist das Tastelement zumindest abschnittsweise biegesteif, jedoch flexibel, wobei die Flexibilität vorzugsweise derart ist, dass das Tastelement innerhalb des Bohr- und Düsgestells um einen Winkel von annähernd 90° umgelenkt werden kann. Das flexible Tastelement verläuft dabei vorzugsweise in der eingefahrenen Position im Wesentlichen entlang einer Achse des Bohr- und Düsgestänges. Zum Vermessen tritt das Tastelement in einem Winkel von ca. 90° aus dem Bohr- und Düsgestänge aus. Dadurch ist eine platzsparende Unterbringung des Tastelements in dem Bohr-Düsgestänge möglich.In a preferred embodiment, the probe element is at least partially rigid, but flexible, wherein the flexibility is preferably such that the probe element can be deflected within the drilling and nozzle frame by an angle of approximately 90 °. The flexible probe element preferably extends in the retracted position substantially along an axis of the drilling and nozzle linkage. For measuring, the feeler element emerges from the drilling and nozzle linkage at an angle of approximately 90 °. As a result, a space-saving placement of the probe element in the drill nozzle linkage is possible.
In einer weiteren Ausführungsform ist das Tastelement mit einem Sensor, insbesondere einem Drucksensor und/oder einem Neigungsmesser, ausgestattet. Der Drucksensor ist beispielsweise an einem die Wandung des Bohrlochs berührenden Ende des Tastelements angeordnet. Dadurch ist die Bohrlochwandung auch bei einem verhältnismäßig lockeren Boden sicher erkennbar. Mittels des Neigungsmessers kann die Ausrichtung des Tastarmes währen eines Messvorganges erfasst bzw. kontrolliert und damit die Solllage des Tastelement verifiziert werden.In a further embodiment, the probe element is equipped with a sensor, in particular a pressure sensor and / or an inclinometer. The pressure sensor is arranged, for example, on a wall of the borehole contacting end of the probe element. As a result, the borehole wall is reliably recognizable even with a relatively loose soil. By means of the inclinometer, the orientation of the sensing arm can be detected or controlled during a measuring process and thus the target position of the probe element can be verified.
Vorzugsweise weist das Bohr- und Düsgestänge mindestens eine Düsenstrahldüse und mindestens eine Bohrkrone auf, wobei das Tastelement zwischen der Düsenstrahldüse und der Bohrkrone angeordnet ist. Eine derartige Anordnung ist aufgrund eines erforderlichen Bauraums und/oder einer Verbindung des Messelements mit dem Bohr- und Düsgestänge besonders vorteilhaft.Preferably, the drilling and nozzle linkage at least one nozzle jet nozzle and at least one drill bit, wherein the probe element between the nozzle jet nozzle and the drill bit is arranged. Such an arrangement is particularly advantageous due to a required installation space and / or a connection of the measuring element with the drilling and nozzle linkage.
In einer weiteren Ausführungsform umfasst die Messeinrichtung Betätigungsmittel für das Tastelement. Durch die Betätigungsmittel wird das Tastelement ausgefahren, bis beispielsweise der Widerstand aufgrund des Kontakts des Tastelements mit der Bohrlochwandung der Bewegung entgegensteht und/oder ein Drucksensor ein Ende einer Bewegung signalisiert. Durch die Betätigungsmittel ist eine besonders einfache Bewegung des Tastelements möglich.In a further embodiment, the measuring device comprises actuating means for the probe element. By the actuating means, the probe element is extended until, for example, the resistance due to the contact of the probe element with the borehole wall opposes the movement and / or a pressure sensor signals an end of a movement. By the actuating means a particularly simple movement of the probe element is possible.
Die Betätigungsmittel können im Rahmen der vorliegenden Erfindung auf unterschiedlichste Art und Weise ausgestaltet sein. Dabei hat sich eine Ausführungsform als vorteilhaft erwiesen, bei der die Betätigungsmittel einen innerhalb des Bohr- und Düsgestänges vorgesehenen Betätigungskolben aufweisen. Bei einer alternativen Ausführungsform weisen die Betätigungsmittel einen innerhalb des Bohr- und Düsgestänges vorgesehenen Elektroantrieb auf, der bevorzugt Antriebsmittel, insbesondere mindestens eine Antriebswalze, antreibt, wobei besonders bevorzugt zwischen den Antriebsmitteln und dem Elektroantrieb ein Getriebe vorgesehen ist.The actuating means can be designed in the context of the present invention in various ways. In this case, an embodiment has proven to be advantageous in which the actuating means have a provided within the drilling and nozzle rod actuating piston. In an alternative embodiment, the actuating means on an electric drive provided within the drilling and nozzle linkage, which preferably drives drive means, in particular at least one drive roller, wherein a transmission is particularly preferably provided between the drive means and the electric drive.
In einer weiteren Ausführungsform weist die Messeinrichtung mindestens ein Messelement zum Messen eines Verschiebungsweges und/oder einer Neigung des Tastelements und/oder der Betätigungsmittel auf. Anhand des Verschiebungsweges und/oder der Neigung des Tastelements ist ein Durchmesser der Düsenstrahlsäule ermittelbar. Die Messeinrichtung kann beispielsweise einen Hochleistungsmagneten umfassen, der in ein Element zum Verschieben des Tastelements integriert ist, wobei eine Erfassungseinrichtung parallel zum Hubbereich des Verschiebeelements angeordnet ist, das auf ein Magnetfeld des Hochleistungsmagneten reagiert. Im Falle eines Elektroantriebes mit Antriebswalze(n) kann die Messeinrichtung beispielsweise auch eine Zähleinrichtung (z. B. Inkrementalgeber) aufweisen, welche die Anzahl der Umdrehungen der Antriebswalze(n) erfasst.In a further embodiment, the measuring device has at least one measuring element for measuring a displacement path and / or an inclination of the probe element and / or the actuating means. Based on the displacement path and / or the inclination of the probe element, a diameter of the nozzle jet column can be determined. The measuring device can, for example, a Comprise high-performance magnets, which is integrated in a member for displacing the probe element, wherein a detection device is arranged parallel to the stroke region of the displacement element, which responds to a magnetic field of the high-performance magnet. In the case of an electric drive with drive roller (s), the measuring device may, for example, also have a counter (eg incremental encoder) which detects the number of revolutions of the drive roller (s).
Vorzugsweise weist das Bohr- oder Düsgestänge einen Druckfluidkanal, insbesondere Druckluftkanal, auf, der mit mindestens einer Düsenstrahlluftdüse und/oder mit einer Austrittsöffnung des Tastelements aus dem Bohr- und Düsgestänge und/oder mit mindestens einer Seite des Betätigungskolbens in Verbindung steht. Hierdurch kann der Druckfluidkanal mehrere Aufgaben erfüllen, zumal die Herstellung und das Vermessen der Düsenstrahlsäule vorzugsweise nicht gleichzeitig stattfinden. Ein für die Düsenstrahlluftdüse verwendeter Druckfluidkanal ist daher bevorzugt auch für ein Spülen der Austrittsöffnung des Tastelements aus dem Bohr- und Düsgestänge und/oder ggf. eine Bewegung des Tastelements verwendbar. Es ist jedoch auch denkbar, einen zusätzlichen Druckfluidkanal zum Spülen der Austrittsöffnung des Tastelements aus dem Bohr- und Düsgestänge und/oder zur Bewegung des Betätigungskolbens vorzusehen. Insbesondere kann für die Bewegung des Betätigungskolbens, falls vorhanden, auch ein anderes Arbeitsfluid eingesetzt werden als für die Erzeugung der Düsenstrahlsäule.The drilling or nozzle linkage preferably has a pressure fluid channel, in particular a compressed air channel, which communicates with at least one nozzle jet air nozzle and / or with an outlet opening of the probe element from the drilling and nozzle linkage and / or with at least one side of the actuating piston. As a result, the pressure fluid channel can fulfill a number of tasks, especially since the production and the measurement of the jet column preferably do not take place simultaneously. A pressure fluid channel used for the jet nozzle air nozzle is therefore preferably also suitable for flushing the outlet opening of the probe element from the drilling and nozzle linkage and / or possibly a movement of the probe element. However, it is also conceivable to provide an additional pressure fluid channel for flushing the outlet opening of the probe element from the drilling and nozzle linkage and / or for movement of the actuating piston. In particular, for the movement of the actuating piston, if any, also a different working fluid can be used as for the generation of the jet column.
Bei Verwendung eines gemeinsamen Druckfluidkanals ist vorzugsweise mindestens ein Ventil vorgesehen, das derart angeordnet ist, um die Verbindung zwischen dem Druckfluidkanal und dem Betätigungskolben und/oder die Verbindung zwischen dem Druckfluidkanal und der Düsenstrahlluftdüse zu unterbrechen. Dadurch ist auf besonders günstige Weise eine Nutzung eines gemeinsamen Druckfluidkanals durch den Betätigungskolben und die Düsenstrahlluftdüse realisierbar. Es ist jedoch auch denkbar, das Ventil lediglich zur Steuerung der Bewegung des Betätigungskolbens vorzusehen.When using a common pressure fluid channel, at least one valve is preferably provided, which is arranged so as to interrupt the connection between the pressure fluid channel and the actuating piston and / or the connection between the pressure fluid channel and the jet nozzle. This is up Particularly favorable manner, a use of a common pressure fluid channel by the actuating piston and the jet nozzle air jet feasible. However, it is also conceivable to provide the valve only for controlling the movement of the actuating piston.
In einer vorteilhaften Weiterbildung ist der Druckfluidkanal über ein Umschaltmittel abwechselnd an eine Pneumatik- und eine Hydraulikversorgung anschließbar. Dadurch kann je nach Anwendung eine geeignete Versorgungsart, d.h. ein geeignetes Arbeitsfluid wie beispielsweise Druckluft oder Hydraulikflüssigkeit, ausgewählt werden.In an advantageous development of the pressure fluid channel is connected via a switching means alternately to a pneumatic and a hydraulic supply. Thus, depending on the application, a suitable supply, i. a suitable working fluid such as compressed air or hydraulic fluid can be selected.
In einer weiteren Ausführungsform weist die Messeinrichtung eine in das Bohr- und Düsgestell integrierte Stromversorgung auf. Die Stromversorgung ist in dem Bohr- und Düsgestänge gut gegen Störeinflüsse von außen geschützt. Die Stromversorgung speist verschiedene Bauteile der Messeinrichtung wie beispielweise Sensoren, Magnetventile oder dergleichen. Die Stromversorgung erfolgt beispielsweise mittels integrierter Akkugeräte, so dass auf eine Verkabelung zumindest teilweise verzichtet werden kann.In a further embodiment, the measuring device has a power supply integrated into the drilling and nozzle frame. The power supply is well protected in the drill and nozzle linkage against external interference. The power supply feeds various components of the measuring device such as sensors, solenoid valves or the like. The power supply takes place for example by means of integrated cordless tools, so that can be dispensed with a wiring at least partially.
In einer weiteren Ausführungsform weist die Messeinrichtung eine in das Bohr- und Düsgestänge integrierte Datenspeichereinrichtung auf. Dadurch können beispielsweise Daten, welche beim Vermessen der Düsenstrahlsäule erfasst wurden, in die Datenspeichereinrichtung geschrieben werden. Diese Daten sind beispielsweise beim Ausfahren des Bohr- und Düsgestänges auslesbar.In a further embodiment, the measuring device has a data storage device integrated into the drilling and nozzle linkage. As a result, for example, data acquired during the measurement of the jet column can be written to the data storage device. This data can be read, for example, when extending the drilling and nozzle linkage.
In einer weiteren Ausführungsform weist das Bohr- und Düsgestänge eine integrierte Datenschnittstelle auf, die bevorzugt zur kontaktlosen Datenübertragung ausgelegt ist, insbesondere mittels Infrarot, Bluetooth oder der dergleichen. Dadurch können die von der Messeinrichtung erfassten Daten direkt an eine Oberfläche übermittelt werden und dort mit geeigneten Geräten ausgewertet werden. Dies ermöglicht beispielsweise auch eine direkte Nachbesserung ohne eine erneute Einführung des Bohr- und Düsgestänges.In a further embodiment, the drilling and nozzle linkage has an integrated data interface, which is preferably designed for contactless data transmission, in particular by means of infrared, Bluetooth or the like. As a result, the data collected by the measuring device can be transmitted directly to a surface and evaluated there with suitable devices. This allows, for example, a direct rework without a re-introduction of the drilling and nozzle linkage.
In einer weiteren Ausführungsform umfasst die Vorrichtung einen Neigungssensor, wobei mindestens die Neigung des Bohr- und Düsgestänges mittels des Neigungssensors lesbar ist. Durch einen derartigen Neigungssensor kann auf geeignete Weise kann der tatsächliche Bohrlochverlauf erfasst werden. Die Neigung kann beispielsweise auch in Relation zur Nordrichtung aufgezeigt werden. Damit kann nicht nur ein tatsächlicher Bohransatzpunkt und der erfindungsgemäß gemessene Durchmesser, sondern auch der vertikale Bohrlochverlauf in eine Auswertung der Daten der Düsenstrahlsäule aufgenommen und miteinander ausgewertet werden. Erfolgt keine direkte Übertragung der gemessenen Daten an die Oberfläche, so ist es von Vorteil mit dem Neigungsmesser ein Neigungsprofil entlang des Bohrlochs zu erfassen und zu speichern.In a further embodiment, the device comprises a tilt sensor, wherein at least the inclination of the drill and nozzle linkage by means of the tilt sensor is readable. By such a tilt sensor can be detected in a suitable manner, the actual course of the borehole. The inclination can be shown, for example, also in relation to the north direction. Thus, not only an actual Bohransatzpunkt and inventively measured diameter, but also the vertical course of the borehole can be included in an evaluation of the data of the jet column and evaluated with each other. If there is no direct transmission of the measured data to the surface, it is advantageous to use the inclinometer to detect and store a slope profile along the borehole.
Das Verfahren zum Herstellen und Vermessen einer Düsenstrahlsäule in einem Untergrund umfasst die folgenden Schritte: Erstellen eines Bohrlochs in einem Untergrund unter Einsatz des erfindungsgemäßen Bohr- und Düsgestänges, Erstellen einer Düsenstrahlsäule im Bereich des Bohrlochs unter Einsatz des Bohr- und Düsgestänges, Vermessen der Düsenstrahlsäule unter Einsatz der (mechanischen) Messeinrichtung, ohne dass das Bohr- und Düsgestänge zuvor aus dem Bohrloch herausgezogen worden ist. Durch das Vermessen ohne ein Herausziehen des Bohr- und Düsgestänges ist eine schnelle und sichere Qualitätskontrolle möglich. Ein Auswerten der Messdaten erfolgt entweder direkt durch eine Übertragung der Daten an die Oberfläche (z. B. auch über Funk) und/oder indirekt durch ein Speichern der Daten und ein Auslesen der Daten, nachdem das Bohr- und Düsgestänge aus dem Bohrloch herausgezogen worden ist.The method for producing and measuring a nozzle jet column in a substrate comprises the following steps: creating a borehole in a subsoil using the drilling and nozzle linkage according to the invention, creating a jet column in the area of the borehole using the drill and nozzle linkage, measuring the jet column below Use of the (mechanical) measuring device, without the drilling and nozzle linkage has been previously pulled out of the hole. By measuring without pulling out of the drill and nozzle linkage a fast and reliable quality control is possible. Evaluation of the measurement data takes place either directly by transferring the data to the surface (eg also by radio) and / or indirectly by storing the data and reading out the data after the drill and nozzle linkage has been pulled out of the borehole is.
Die Erfindung wird nachfolgend anhand einer bevorzugten Ausführungsform beispielhaft beschrieben. Für gleiche Bauteile werden dabei einheitliche Bezugszeichen verwendet. In den Zeichnungen zeigen:
Figur 1- eine Querschnittsdarstellung einer Ausführungsform eines erfindungsgemäßen Bohr- und Düsgestänges;
Figur 2- eine Vergrößerung des Bereichs A gemäß
;Figur 1 Figur 3- eine Vergrößerung des Bereichs
B gemäß Figur 1 ; - Figur 4A
- eine Vergrößerung der Darstellung eines Bereichs C gemäß
;Figur 1 - Figur 4B
- eine Schnittdarstellung entlang A-A gemäß
Figur 4A ; - Figur 5
- eine vergrößerte Darstellung des Bereichs C gemäß
Figur 1 in einem zweiten Zustand; - Figur 6
- eine vergrößerte Darstellung des Bereichs
D gemäß Figur 1 ; - Figur 7
- eine vergrößerte Darstellung des Bereichs E gemäß
;Figur 1 - Figur 8
- eine Illustration eines erfindungsgemäßen Verfahrens zur Herstellung einer Düsenstrahlsäule;
- Figur 9
- eine Querschnittsdarstellung einer weiteren Ausführungsform eines erfindungsgemäßen Bohr- und Düsgestänges;
- Figur 10
- eine Vergrößerung des Bereichs C gemäß
Figur 9 .
- FIG. 1
- a cross-sectional view of an embodiment of a drilling and nozzle rod according to the invention;
- FIG. 2
- an enlargement of the area A according to
FIG. 1 ; - FIG. 3
- an enlargement of the area B according to FIG
FIG. 1 ; - FIG. 4A
- an enlargement of the representation of a region C according to
FIG. 1 ; - FIG. 4B
- a sectional view along AA according to
FIG. 4A ; - FIG. 5
- an enlarged view of the area C according to
FIG. 1 in a second state; - FIG. 6
- an enlarged view of the area D according to
FIG. 1 ; - FIG. 7
- an enlarged view of the area E according to
FIG. 1 ; - FIG. 8
- an illustration of a method according to the invention for producing a nozzle jet column;
- FIG. 9
- a cross-sectional view of another embodiment of a drilling and nozzle rod according to the invention;
- FIG. 10
- an enlargement of the area C according to FIG
FIG. 9 ,
Die Bewegung des Tastelements 40 mittels des Betätigungskolbens 41 erfolgt in der vorliegenden Ausführungsform vorzugsweise pneumatisch oder hydraulisch. Das Arbeitsfluid, bevorzugt Druckluft, ist in dem Druckfluidkanal 30 eingebracht und wirkt in dem dargestellten Arbeitsschritt auf den Betätigungsbolzen 41. Ist der Druck für eine Betätigung des Betätigungskolbens 41 nicht ausreichend, so bleibt das Tastelement 40 in der eingefahrenen Position. Durch Schließen eines Ventils 45 wirkt das Arbeitsfluid über den Druckfluidkanal 30 in umgekehrter Richtung auf den Betätigungsbolzen 41. Dadurch ist das Tastelement 40 aus einer ausgefahrenen Position in die eingefahrene Position fahrbar. Anstelle einer aktiven Rückführung des Tastelements 40 ist auch eine passive Rückführung mittels eines geeigneten Elements, beispielsweise mittels Federkraft denkbar.The movement of the
Nach Erreichen der gewünschten Tiefe wird eine Düsenstrahlsäule im Bereich des Bohrlochs in einem Arbeitsschritt IV erzeugt. In den Schritten V und VI wird der Durchmesser der erzeugten Düsenstrahlsäule auf verschiedenen Höhen gemessen. Dabei wird das in den vorhergehenden Figuren gezeigte Tastelement 40 in der noch nicht ausgehärteten Düsenstrahlsäule bewegt. Das Tastelement 40 ist dabei vorteilhafterweise derart ausgelegt, dass es aufgrund des Auftriebs, der Eigensteifigkeit und des Eigengewichts im Wesentlichen waagrecht gehalten wird. In einem Schritt VII wird das Bohr- und Düsgestänge herausgezogen. Dabei lassen sich Daten, welche während des Abbohrens und Vermessens in den Schritten V und VI gespeichert wurden, auslesen. Anhand dieser Daten können geeignete Aussagen über die Beschaffenheit des Bodens und die davon abhängige Beschaffenheit einer erzeugten Düsenstrahlsäule gemacht werden. Diese lassen für ein auf den Arbeitsschritt 8 folgendes Projekt in vorteilhafter Weise nutzen.After reaching the desired depth, a nozzle jet column is generated in the region of the borehole in a working step IV. In steps V and VI, the diameter of the generated jet column is measured at different heights. In this case, the
Daneben ist es auch denkbar, die Daten über eine geeignete Verbindung (z. B. auch über Funk) während der Arbeitsschritte V und VI an die Oberfläche zu übertragen und dort auszumessen. Anhand der Daten kann dann bedarfsweise mittels des Bohr- und Düsgestänges eine Korrektur der Düsenstrahlsäule erfolgen.In addition, it is also conceivable to transmit the data to the surface via a suitable connection (eg also via radio) during work steps V and VI and to measure it there. On the basis of the data, a correction of the nozzle jet column can then take place if necessary by means of the drilling and nozzle linkage.
Eine weitere Ausführungsform der erfindungsgemäßen Vorrichtung 1 ist schematisch in
Ferner ermöglicht die vorliegende Ausführungsform auf besonders einfache Weise, dass die Austrittsöffnung 44 mit dem Druckfluidkanal 30 in Verbindung steht, sodass die Austrittsöffnung 44 kontinuierlich mit Druckfluid durchspült wird, wodurch das Eintreten von Verschmutzungen entlang des Tastelements 40 weitgehend vermieden werden kann.Furthermore, the present embodiment allows in a particularly simple manner, that the
Um den Verschiebungsweg des Tastelements 40 zu erfassen, können in der vorliegenden Ausführungsform anstelle von unmittelbar mit dem Tastelement 40 verknüpften Messelementen Zählelemente vorgesehen sein, welche die Umdrehungen der Antriebswalzen 41' erfassen. Hierbei kann es sich beispielsweise um sogenannte Inkrementalgeber handeln.In order to detect the displacement of the
Ferner ermöglicht der Einsatz eines Elektroantriebes, dass gegebenenfalls auf das Vorsehen eines Drucksensors und Neigungssensors in dem Tastelement 40 verzichtet werden kann, da während des Vorschubes des Tastelements aus einer Zunahme des durch den Elektroantrieb aufgenommenen Stroms darauf geschlossen werden kann, dass das Tastelement die Wandung erreicht hat.Furthermore, the use of an electric drive makes it possible to dispense with the provision of a pressure sensor and inclination sensor in the
Claims (17)
- Device for producing and measuring nozzle jet columns underground, comprising a bore and nozzle rod (1) for producing a borehole and a nozzle jet column in the area of the borehole, and a measuring device (14) for measuring the nozzle jet column, in particular the diameter of the nozzle jet column, wherein the measuring device (14) is integrated at least partly into the bore and nozzle rod (1), wherein the measuring device (14) has at least one longitudinally rigid sampling element (40) which can be moved between a position moved into the bore and nozzle rod (1) and a moved-out position, characterised in that the sampling element (40) consists at least in some sections of one or of a plurality of CFP and/or GFP rods.
- Device according to claim 1, characterised in that the sampling element (40) is rigid, but flexible at least in some sections, wherein the flexibility is preferably such that the sampling element (40) within the bore and nozzle rod (1) may be deflected by an angle of approximately 90°.
- Device according to one of claims 1 to 2, characterised in that the sampling element (40) is equipped with at least one sensor (420), in particular a pressure sensor and/or an inclinometer.
- Device according to one of claims 1 to 3, characterised in that the bore and nozzle rod (1) has at least one nozzle jet nozzle (13) and at least one drill bit (12), wherein the sampling element (40) is arranged between the nozzle jet nozzle (13) and the drill bit (12).
- Device according to one of claims 1 to 4, characterised in that the measuring device also has actuating means (41; 41') for the sampling element.
- Device according to claim 5, characterised in that the actuating means have an actuating piston (41) provided within the bore and nozzle rod.
- Device according to claim 5, characterised in that the actuating means have an electric drive provided within the bore and nozzle rod and which preferably drives drive means, in particular at least one drive roller (41').
- Device according to one of claims 1 to 7, characterised in that the measuring device (14) has at least one measuring element for measuring the displacement path and/or the inclination of the sampling element (40) and/or optionally the displacement path of the actuating piston.
- Device according to claim 5 or 6, characterised in that the bore and nozzle rod has a compressed fluid channel (30) which is connected to at least one nozzle jet air nozzle (13) and/or to an outlet opening (44) of the sampling element from the bore and nozzle rod and/or to at least one side of the actuating piston (41).
- Device according to claim 9, characterised in that at least one valve (45), which is arranged to interrupt the connection between the compressed fluid channel (30) and the actuating piston (41) and/or the connection between the compressed fluid channel (30) and the nozzle jet air nozzle (13), is provided in the compressed fluid channel (30).
- Device according to claim 9 or 10, characterised in that the compressed fluid channel (30) can be connected via switching means (53) alternately to a pneumatic supply (54) and a hydraulic supply (55).
- Device according to one of the preceding claims, characterised in that the measuring device (14) has a current supply integrated into the bore and nozzle rod (1).
- Device according to one of the preceding claims, characterised in that the measuring device (14) has a data storage device integrated into the bore and nozzle rod (1).
- Device according to one of the preceding claims, characterised in that the measuring device (14) has a programmable control integrated into the bore and nozzle rod (1).
- Device according to one of the preceding claims, characterised in that the measuring device (14) has a data interface integrated into the bore and nozzle rod (1) and which is preferably designed for contact-free data transmission, in particular infrared, Bluetooth or the like.
- Device according to one of the preceding claims, characterised by an inclinometer, via which at least the inclination of the bore and nozzle rod (1) can be measured and can be superimposed preferably with measurements from the diameter determinations.
- Process for producing and measuring nozzle jet columns underground using a device according to one of the preceding claims, having the steps:preparing a borehole underground using the bore and nozzle rod (1),preparing a nozzle jet column in the area of the borehole using the bore and nozzle rod (1),measuring the nozzle jet column using the measuring device (14) without the bore and nozzle rod (1) having been withdrawn beforehand from the borehole.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006002838A DE102006002838B3 (en) | 2006-01-20 | 2006-01-20 | Jet spray column producing and measuring device, has measuring device measuring diameter of jet spray column and partially integrated in drill and jet rods, where drill and jet rods produce bore hole |
PCT/EP2007/000466 WO2007101500A1 (en) | 2006-01-20 | 2007-01-19 | Device and method for producing soil structures in the ground |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1974122A1 EP1974122A1 (en) | 2008-10-01 |
EP1974122B1 true EP1974122B1 (en) | 2010-05-12 |
Family
ID=38336282
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07722760A Not-in-force EP1974122B1 (en) | 2006-01-20 | 2007-01-19 | Device and method for producing foundation elements in the ground |
Country Status (6)
Country | Link |
---|---|
US (1) | US8096370B2 (en) |
EP (1) | EP1974122B1 (en) |
AT (1) | ATE467746T1 (en) |
CA (1) | CA2637102A1 (en) |
DE (1) | DE102006002838B3 (en) |
WO (1) | WO2007101500A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2543770B1 (en) * | 2011-07-06 | 2014-01-22 | GuD Geotechnik und Dynamik GmbH | Method and device for measuring nozzle beams underground |
DE102011082658A1 (en) | 2011-09-14 | 2013-03-14 | GuD Geotechnik und Dynamik GmbH | Suspension removal device |
CN102677656B (en) * | 2012-04-11 | 2015-07-29 | 武汉武船机电设备有限责任公司 | A kind of drilling tool |
US20140353036A1 (en) * | 2013-05-29 | 2014-12-04 | Vetco Gray Inc. | Apparatus and Method for Measuring Inclination in Subsea Running, Setting, and Testing Tools |
CN110847888B (en) * | 2019-11-12 | 2021-08-27 | 山东大学 | Auxiliary device and method for cross-hole resistivity CT detection of fractured rock mass |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5419405A (en) * | 1989-12-22 | 1995-05-30 | Patton Consulting | System for controlled drilling of boreholes along planned profile |
US5291956A (en) * | 1992-04-15 | 1994-03-08 | Union Oil Company Of California | Coiled tubing drilling apparatus and method |
DE4429917A1 (en) | 1994-08-23 | 1996-02-29 | Keller Grundbau Gmbh | Determination of the diameter or wall thickness of support or wall elements |
AT409007B (en) * | 1997-10-28 | 2002-05-27 | Keller Grundbau Gmbh | PRODUCTION OF EXCAVATIONS AND THEIR FILLING UNDER THE SUBSTRATE FOR THE PURPOSE OF SOIL STABILIZATION |
EP0940559A3 (en) * | 1998-03-06 | 2002-09-25 | Stephan Eberhard Bruder | Apparatus and method for measuring the diameter of a body obtained in the ground by high pressure injection |
DE19949393C1 (en) * | 1999-10-13 | 2001-06-07 | Keller Grundbau Gmbh | Support or wall in a borehole is formed by a jet at the drill rod which sprays a mixture of loose soil and concrete with a lower coil spring to monitor the edge of the mixture for a controlled wall thickness |
FR2802298B1 (en) * | 1999-12-14 | 2002-03-08 | Cie Du Sol | INJECTION COLUMN DIAMETER CONTROL METHOD |
DE10064187C1 (en) * | 2000-12-22 | 2002-05-08 | Keller Grundbau Gmbh | Diameter measuring device for ground foundation or wall element has measuring element provided by rod-shaped profile with 2 concave strips pressed together for switching from flexible state to rigid state |
DE10313912B4 (en) * | 2003-03-27 | 2007-07-12 | Keller Grundbau Gmbh | Device for determining the diameter or radius of cavities |
-
2006
- 2006-01-20 DE DE102006002838A patent/DE102006002838B3/en not_active Expired - Fee Related
-
2007
- 2007-01-19 EP EP07722760A patent/EP1974122B1/en not_active Not-in-force
- 2007-01-19 CA CA002637102A patent/CA2637102A1/en not_active Abandoned
- 2007-01-19 AT AT07722760T patent/ATE467746T1/en active
- 2007-01-19 US US12/223,014 patent/US8096370B2/en not_active Expired - Fee Related
- 2007-01-19 WO PCT/EP2007/000466 patent/WO2007101500A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
ATE467746T1 (en) | 2010-05-15 |
CA2637102A1 (en) | 2007-09-13 |
DE102006002838B3 (en) | 2007-09-13 |
US8096370B2 (en) | 2012-01-17 |
WO2007101500A1 (en) | 2007-09-13 |
EP1974122A1 (en) | 2008-10-01 |
US20090178849A1 (en) | 2009-07-16 |
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