EP3760830B1 - Device for closing a cavity formed in the ground - Google Patents

Device for closing a cavity formed in the ground Download PDF

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Publication number
EP3760830B1
EP3760830B1 EP20172065.3A EP20172065A EP3760830B1 EP 3760830 B1 EP3760830 B1 EP 3760830B1 EP 20172065 A EP20172065 A EP 20172065A EP 3760830 B1 EP3760830 B1 EP 3760830B1
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EP
European Patent Office
Prior art keywords
mandrel
plate
opening
cavity
diameter
Prior art date
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EP20172065.3A
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German (de)
French (fr)
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EP3760830A1 (en
Inventor
Michael Strzodka
Jan Magister
Andreas BÜRGER
Peter Biegel
Sokrates Giapapas
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GMB GmbH
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GMB GmbH
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Publication of EP3760830A1 publication Critical patent/EP3760830A1/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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing

Definitions

  • the present invention relates to a device for closing a cavity formed in the ground, in particular vertical bores or shafts in the ground, which can lead to a daybreak.
  • Filter wells have been used for opencast mine drainage in brown coal mining for years. Some of these filter wells will be dredged over as the opencast mining progresses, while another part will remain standing and must be preserved. If storage is carried out improperly, daytime breakages can occur due to masses slipping into the cavity of the filter tube. In order to avoid such events and the resulting threats to public safety, safe storage of filter wells is necessary. To date, such subsequent storage has been carried out by subsequently drilling the filter well and then filling it with a clay-ash-sediment suspension. Such a procedure leads to considerable costs.
  • a device for sealing a damaged outlet socket of a borehole pipe comprising a pipe socket and a casing ring, the pipe socket and/or the casing ring being connected or connectable to a flexible hose on the side opposite the borehole.
  • EP 0 839 964 A2 discloses a cover for covering drill holes in concrete floors, asphalt floors and the like.
  • the present invention is based on the object of providing a device with which the upper opening of vertical bores or shafts in the ground can be closed or stored easily, safely, cost-effectively, reliably and permanently.
  • the immediate surroundings of the opening to be closed can consist of soil, which can be composed of loose or hard rock depending on the local geology.
  • the immediate surroundings of the opening to be closed can be leveled using suitable tools.
  • the present invention relates to the subjects mentioned in the claims.
  • the device according to the invention with a plate and a mandrel has the advantage that the device described here has a plate which has a diameter that is significantly larger than the opening of the cavity to be closed, and that the device is essentially on the closing opening supports surrounding ground.
  • the device is therefore independent of the shape and stability of the opening or cavity to be closed. This makes a much more cost-effective device possible for closing the cavity formed in the ground, in particular vertical bores or shafts in the ground.
  • the inner wall of the cavity formed in the ground can be partially or completely lined by one or more supporting or expansion elements with a central opening.
  • the mandrel preferably has a length in the direction of gravity that is longer than the uppermost support or expansion element closest to the opening. This prevents the mandrel from slipping horizontally in the event that the top support or expansion element slips or is completely or partially destroyed.
  • the plate can be circular, polygonal or oval.
  • the plate can be formed into different shapes. This has the advantage that the construction of the plate offers a wide range of options and adapts to the respective conditions around the opening to be protected can be adjusted.
  • the plate is rectangular, in particular square.
  • the mandrel preferably projects beyond the uppermost edge of the opening of the cavity to be preserved. In other words, part of the mandrel lies above the opening of the hole or shaft to be protected.
  • the outer shape of the mandrel is preferably partially or completely cylindrical or conical.
  • the conically shaped part of the mandrel can be designed to partially or completely protrude from the plate in the direction of introduction into the cavity to be preserved and thus to be insertable into the cavity to be preserved. This has the advantage that the mandrel can be produced cost-effectively, for example using a lathe.
  • the mandrel of the device according to the invention can be solid or comprise one or more mandrel cavities.
  • the mandrel is present as a separate element separate from the plate and is designed to be connectable to the plate.
  • the mandrel and plate can be manufactured separately, transported and only connected together at the point of use. This allows further flexibility in the use of the device and possibly makes it easier to transport the device to the place of use.
  • the mandrel is designed in one piece. This prevents any unintentional separation of the parts.
  • the plate has a central primary plate opening with a diameter that is smaller than the diameter of the end of the mandrel facing away from the opening to be stored in the device according to the invention, while the opposite end of the mandrel has a diameter that is smaller than the diameter of the central primary plate opening.
  • the mandrel can thus be introduced into the central primary plate opening in such a way that part of the mandrel protrudes from the plate in the direction of the cavity to be protected, while the mandrel cannot be completely passed through the central primary plate opening.
  • the central primary plate opening and the mandrel are designed in such a way that the mandrel cannot fall through the central primary plate opening.
  • the mandrel can have a partially conical outer shape.
  • the mandrel may have a circular cross-section at one end with a diameter smaller than the diameter of the central primary plate opening, with the opposite end of the mandrel having a circular cross-section with a diameter larger than the diameter of the central one primary plate opening.
  • the mandrel and the plate are designed to be connectable to one another by a bayonet lock or via projections, extensions or barbs and complementary recesses.
  • the mandrel and the plate have one or more extensions and/or recesses, the mandrel and plate being designed to complement each other in such a way that the mandrel and plate can be connected to one another by means of the extensions and/or recesses.
  • the plate preferably has elements that allow manual or mechanical transport or manual or mechanical assembly.
  • the plate has hooks, eyes and/or handle elements so that the device can be transported and assembled in an efficient manner.
  • the plate can have at least one secondary plate opening, which is preferably formed perpendicular to the surface of the plate, the at least one secondary plate opening being arranged in such a way that it communicates with the primary plate opening (5) for inserting the at least one mandrel (2). not overlapped.
  • the at least one secondary plate opening can be used to fasten or fix the plate to the ground using, for example, a ground anchor or the like.
  • the surface of the plate is quadrangular (e.g. rectangular, in particular square), with four secondary plate openings each assigned to one of the corners of the plate.
  • the diameter of one, several or all secondary plate openings is preferably no more than a quarter of the diameter of the base of the mandrel or the central primary plate opening.
  • the plate is preferably designed in one piece. This has the advantage that the plate does not have to have any additional connecting elements for connecting separate plate parts. This leads to a reduction in manufacturing costs.
  • the plate can be designed in several parts, the plate then having at least two segments that can be permanently attached to one another.
  • the plate has at least one embossed or printed identification and/or a marker.
  • the plate may contain embossed or printed markings on one or more sides, for example text, numbers, symbols or QR code (Quick Response Code).
  • QR code Quick Response Code
  • the plate can contain other markers, in the form of metal bodies, RFID (Radio-Frequency Identification) or NFC (Near-Field Communication), for better location. This has the advantage that marks of origin and quality seals are attached and improved location of the device is possible.
  • the mandrel preferably has a circular or oval cross section. This has the advantage that the mandrel can be produced cost-effectively, for example using a lathe.
  • the mandrel can have at least two individual columns or columns that are braced together. This has the advantage that the mandrel or the device as a whole can be reinforced in an efficient, material-friendly manner.
  • the mandrel preferably has at least one sealing lamella.
  • the sealing lamella is designed and attached in such a way that the most effective closure of the opening of the cavity to be protected is achieved.
  • the sealing lamella is usually arranged on one of the outer sides of the mandrel. This has the advantage that an effective sealing of the opening of the cavity to be closed is possible.
  • a damping element is preferably arranged between the mandrel and the inner wall of the cavity. This has the advantage that the device is protected not only against forces directed in the direction of gravity, but also against horizontal forces. This ensures that the device according to the invention covers the cavity to be closed securely, permanently and reliably.
  • the present invention also relates to a method for closing a cavity formed in the ground, preferably for closing vertical bores or shafts in the ground, particularly preferably for closing filter wells for opencast mine drainage, the method according to the invention being characterized in that that the cavity is closed by using a device according to the invention and that no possible daybreak endangers public safety.
  • the immediate surroundings of the opening of the cavity to be closed are leveled before the device according to the invention is inserted.
  • the immediate surroundings of the opening of the cavity preferably extends at least to the area around the opening of the cavity to be closed, which is covered by the plate of the device according to the invention.
  • a depression or pit can first be dug around the opening of the cavity to be closed before the device according to the invention is used.
  • the depression or pit can be filled again after inserting the device according to the invention and, if necessary, leveled to the surface.
  • the present invention also relates to a use of the device according to the invention, wherein the device according to the invention is used to close a cavity formed in the ground, preferably a vertical bore or shaft in the ground, particularly preferably a filter well for opencast mine drainage.
  • a device 10 according to a first embodiment is shown in a schematic sectional view.
  • the device 10 is designed to close a cavity 12 formed in the ground 11.
  • the device 10 comprises a plate 1 and a mandrel 2.
  • the plate 1 has an area that is at least twice larger than the area of the opening 3 of the cavity 12 to be covered.
  • the plate 1 is supported on the ground 11 surrounding the opening 3 .
  • the plate 1 has a circular shape.
  • the mandrel 2 comprises a head element 31 and a body element 32. The mandrel 2 is held in a form-fitting manner on the plate 1 in the middle of the plate 1 and normal to the plate plane and is arranged in the direction of gravity.
  • the mandrel 2, or the body element 32 can be introduced into the cavity 12 through the opening 3, the mandrel 2 preferably having a length in the direction of gravity of at least 50 cm, preferably at least 60 cm, more preferably at least 80 cm, in particular preferably from 60 cm to 180 cm or from 80 cm to 150 cm.
  • the mandrel 2, or the head element 31 has a circular shape.
  • the mandrel 2 can be partially conical in its outer shape, with the end D1 of the mandrel 2 on the plate side having a larger diameter compared to the diameter at the opposite end D2 of the mandrel 2.
  • the diameter of the cross section at the end D2 is therefore smaller than the diameter of the cross section at end D1.
  • the diameter of the cross section at the end D2 is smaller than the diameter of the cavity 12 to be kept or the opening 3 of the cavity 12 to be kept.
  • the length of the mandrel 2 exceeds the uppermost edge 4 of the opening 3 of the cavity 12 to be kept.
  • Figure 3 illustrates a schematic representation of a further embodiment of the device 10 according to the invention.
  • the mandrel 2 is completely cylindrical in its external shape, i.e. with a constant cross section over the length of the body element 32 of the mandrel 2.
  • the end D1 of the mandrel 2 points , or the body element 32, on the side facing the plate has a cross section that corresponds to the cross section at the end D2.
  • the diameter a of the cross section of the end D1 and D2 of the mandrel 2 is adapted to the diameter of the opening 3 of the cavity 12 to be closed and can, for example, be between 300 mm and 100 mm, in particular 315 mm.
  • the body element 32 comprises a first body part 41 and a second body part 42.
  • the first body part 41 has a length b, which is, for example, between 160 mm and 230 mm, in particular 194 mm.
  • the second body part 42 has a length c which is between 800 mm and 1200 mm, in particular 1000 mm.
  • the first body part 41 can be connected to the second body part 42 by means of a butt seam 43.
  • the head element 31 of the mandrel 2 includes a first head part 44 and a second head part 45, which are non-positively connected to one another, for example by welding.
  • the first head part 44 has a thickness g that is between 15 mm and 50 mm, in particular 30 mm.
  • the second head part 45 has a thickness h that is between 15 mm and 35 mm, in particular 25 mm.
  • the first head part 44 has a diameter d that is between 320 mm and 360 mm, in particular 340 mm.
  • the second head part 45 has a diameter e that is between 250 mm and 300 mm, in particular 277.6 mm.
  • the mandrel 2 can have an additional extension 46 at the end D1, which has a diameter f that is between 315 mm and 390 mm, in particular 370 mm.
  • the head element 31 can be connected to the body element 32, for example by means of a pre-weld collar 47.
  • the mandrel 2 can have a mandrel cavity. Part of the mandrel 2 preferably projects beyond the plate 1.
  • the mandrel cavity has a diameter e which is between 250 mm and 300 mm, in particular 277.6 mm.
  • the outer shape of the mandrel 2 can be partially or completely cylindrical or conical.
  • the plate 1 has a central primary plate opening 5, with the mandrel 2 being inserted into the central primary plate opening.
  • the mandrel 2 can be connected to the plate 1 as a separate element.
  • the plate 1 has the central primary plate opening 5 through which the mandrel 2 can be introduced into the cavity 12. It is provided that the plate 1 has a central primary plate opening 5 with a diameter smaller than a diameter of the mandrel 2, so that only a part of the mandrel 2 can be inserted through the central plate opening 5 and the mandrel 2 is designed such that a Falling of the mandrel 2 through the central primary plate opening 5 is excluded.
  • the mandrel 2 can be at least partially conical.
  • the mandrel 2 has a cross section at the end D2 with a diameter smaller than the diameter of the central primary plate opening 5, the end D1 of the mandrel 2 having a circular cross section with a diameter larger than the diameter of the central primary Plate opening 5. This means that only part of the mandrel 2 can be inserted through the central primary plate opening 5, with the remaining part of the mandrel 2 being stopped by the edge 6 of the central primary plate opening 5.
  • Figure 4 illustrates a further embodiment of the device 10.
  • the mandrel 2 and the plate 1 are preferably designed to be connectable to one another by a bayonet lock 13 or barb 14.
  • a longitudinal slot can be arranged on the outside of the body element 32 of the mandrel 2, the end of which is adjoined at right angles by a short transverse slot (not illustrated in the figures).
  • the inner side of the central primary plate opening 5 of the plate 1 has an extension which can be inserted into the transverse slot and then effects the firm connection. If the body element 32 is inserted through the central primary plate opening 5, a plug-and-turn movement can take place, whereby the extension can snap into the corresponding transverse slot through the longitudinal slot.
  • the plate 2 can be formed in several parts, for example in four segments or parts 15, 16, 17, 18. At least two segments, preferably at least four segments or parts 15, 16, 17, 18, can be fastened to one another.
  • the plate 1 is preferably designed in such a way that the plate 1 has sufficient stability, which is caused by material properties, thickness of the plate 1 or the internal structure of the plate 1, in order to withstand acting vertical forces.
  • Figure 6 shows a further embodiment of the device 10, wherein the plate 1 has elements, in particular carrying handle elements 19, which are used for manual or mechanical transport or manual or mechanical assembly.
  • the carrying handle elements 19 can be arranged on the plate 1 in such a way that the carrying handle elements 19 are designed to be rotatable about an axis 20 along the surface of the plate 1. This may allow rotation of the carrying handle elements 19 about the axis 20 for gripping the carrying handle element 19 and carrying the plate 1.
  • the side 21 of the plate 1 can have an embossed or printed identification 22 and a marker 23.
  • Figures 7 to 11 illustrated various further embodiments of the device 10, wherein the plate 1 and the mandrel 2 or the head element 31 have different geometric shapes.
  • the plate 1 is preferably square, with the mandrel 2 having a circular cross section.
  • the plate 1 is preferably circular, with the mandrel 2 having a polygonal cross section ( Figure 8 ), a square cross section ( Figures 9 and 10 ) or a triangular cross section ( Figure 11 ) having.
  • the plate 1 and/or the mandrel 2 can be oval shaped.
  • Figure 12 illustrates a further embodiment of the device 10, according to which the mandrel 2 has at least one sealing lamella 24.
  • the sealing plate 24 can be formed from different materials, for example from different copolymers.
  • the mandrel 2 or the body element 32 can be designed in several parts, as in Figure 13 is shown.
  • a first part 33 is arranged on or connected to the outer shape of the body element 32.
  • a second part 34 can be arranged on the outside of the first part 33 or connected to it.
  • the individual parts 32, 33 can be made from different materials and/or have different structures.
  • Figure 14 and Figure 15 show further embodiments of the device 10, according to which the mandrel 2 has at least two individual columns 35.
  • the mandrel 2 has two individual columns 35 and according to Figure 15 the mandrel 2 has three individual columns 35.
  • Figures 16 and 17 illustrate embodiments of the device 10, according to which the mandrel 2 has at least two columns 35 braced together by means of a strut 36.
  • the mandrel 2 has two columns 35 braced together by means of a strut 36 and according to Figure 17 the mandrel 2 has three columns 35 braced together by means of two struts 36.
  • Figures 18 and 19 show further embodiments of the device 10, according to which the mandrel 2 has at least one extension 38 on its outside 37.
  • the mandrel 2 has four extensions 38 on its outside 37 and according to Figure 19 the mandrel 2 has three extensions 38 on its outside 37.
  • the mandrel 2 has four recesses 39 on its outside 37.
  • Figure 21 shows a schematic representation of a further embodiment of the device 10, wherein the plate 1 has at least one secondary plate opening 40, which is formed perpendicular/perpendicular to the base surface of the plate 1, the at least one secondary plate opening 40 being arranged in such a way that it is connected to the base surface of the mandrel 2 or with the base area of the central primary plate opening 5 does not overlap.
  • the plate 1 is square and has a central primary plate opening 5 and four secondary plate openings 40.
  • the plate 1 is square with a side length i that is between 800 mm and 1200 mm, in particular 1000 mm.
  • the primary central plate opening 5 has a diameter k that is between 310 mm and 360 mm, in particular 340 mm.
  • the secondary plate opening can be at a distance j from the respective plate edge, the distance j can be between 100 mm and 200 mm, in particular 150 mm. Furthermore, the respective secondary plate opening 40 has a diameter I that is between 50 mm and 200 mm, in particular 100 mm.

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

Description

Die vorliegende Erfindung betrifft eine Vorrichtung zum Verschließen eines im Erdboden ausgebildeten Hohlraums, insbesondere von vertikalen Bohrungen oder Schächten im Erdboden, die zu einem Tagesbruch führen können.The present invention relates to a device for closing a cavity formed in the ground, in particular vertical bores or shafts in the ground, which can lead to a daybreak.

Im Braunkohlenbergbau werden seit Jahren Filterbrunnen zur Tagebauentwässerung eingesetzt. Ein Teil dieser Filterbrunnen wird durch den fortschreitenden Tagebau überbaggert, ein anderer Teil bleibt stehen und ist zu verwahren. Erfolgt die Verwahrung unsachgemäß, so kann es durch das Nachrutschen von Massen in den Hohlraum des Filterrohres zu Tagesbrüchen kommen. Um solche Ereignisse und daraus entstehende Gefährdungen der öffentlichen Sicherheit zu vermeiden, ist eine sichere Nachverwahrung von Filterbrunnen notwendig. Bislang erfolgt eine solche Nachverwahrung durch ein nachträgliches Aufbohren des Filterbrunnens sowie einer anschließenden Verfüllung mit einer Ton-Asche-Sediment-Suspension. Ein solches Verfahren führt zu erheblichen Kosten.Filter wells have been used for opencast mine drainage in brown coal mining for years. Some of these filter wells will be dredged over as the opencast mining progresses, while another part will remain standing and must be preserved. If storage is carried out improperly, daytime breakages can occur due to masses slipping into the cavity of the filter tube. In order to avoid such events and the resulting threats to public safety, safe storage of filter wells is necessary. To date, such subsequent storage has been carried out by subsequently drilling the filter well and then filling it with a clay-ash-sediment suspension. Such a procedure leads to considerable costs.

In D202010009507 U1 ist eine Vorrichtung zum Abdichten eines havarierten Austrittsstutzens eines Bohrlochrohres offenbart, wobei die Vorrichtung einen Rohrstutzen und einen Mantelring umfasst, wobei der Rohrstutzen und/oder der Mantelring auf der dem Bohrloch gegenüberliegenden Seite mit einem flexiblen Schlauch verbunden oder verbindbar sind. EP 0 839 964 A2 offenbart einen Deckel zum Abdecken von Bohrlöchern in Betonfußböden, Asphaltfußböden und dergleichen.In D202010009507 U1 a device for sealing a damaged outlet socket of a borehole pipe is disclosed, the device comprising a pipe socket and a casing ring, the pipe socket and/or the casing ring being connected or connectable to a flexible hose on the side opposite the borehole. EP 0 839 964 A2 discloses a cover for covering drill holes in concrete floors, asphalt floors and the like.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung bereit zu stellen, mit der die obere Öffnung von vertikalen Bohrungen oder Schächten im Erdboden einfach, sicher, kostengünstig, zuverlässig und zeitlich dauerhaft zu verschließen bzw. zu verwahren ist. Die unmittelbare Umgebung der zu verschließenden Öffnung kann aus Erdboden bestehen, welcher aus Locker- oder Festgestein entsprechend der örtlichen Geologie zusammengesetzt sein kann. Vor der Installation der erfindungsgemäßen Vorrichtung kann die unmittelbare Umgebung der zu verschließenden Öffnung mit geeigneten Hilfsmitteln plan eingeebnet werden.The present invention is based on the object of providing a device with which the upper opening of vertical bores or shafts in the ground can be closed or stored easily, safely, cost-effectively, reliably and permanently. The immediate surroundings of the opening to be closed can consist of soil, which can be composed of loose or hard rock depending on the local geology. Before installing the device according to the invention, the immediate surroundings of the opening to be closed can be leveled using suitable tools.

Die vorliegende Erfindung betrifft die in den Ansprüchen genannten Gegenstände.The present invention relates to the subjects mentioned in the claims.

Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen und in der Beschreibung offenbart.Advantageous developments of the invention are disclosed in the subclaims and in the description.

Die erfindungsgemäße Vorrichtung mit einer Platte und einem Dorn hat den Vorteil, dass die hier beschriebene Vorrichtung eine Platte aufweist, die einen Durchmesser besitzt, der wesentlich größer als die Öffnung des zu verschließenden Hohlraums ist, und dass sich die Vorrichtung im Wesentlichen auf dem die zu verschließende Öffnung umgebenden Untergrund abstützt. Damit ist die Vorrichtung unabhängig von der Form und Stabilität der zur verschließenden Öffnung bzw. des zu verschließenden Hohlraums. Dadurch ist eine wesentlich kostengünstigere Vorrichtung zum Verschließen des im Erdboden ausgebildeten Hohlraums möglich, insbesondere von vertikalen Bohrungen oder Schächten im Erdboden. Die Innenwandung des im Erdboden ausgebildeten Hohlraums kann durch ein oder mehrere Stütz- oder Ausbauelemente mit einer zentralen Öffnung teilweise oder vollständig ausgekleidet sein. Bevorzugt weist der Dorn eine Länge in Schwerkraftrichtung auf, die länger ist als das oberste, der Öffnung nächstgelegene Stütz- oder Ausbauelement. Dadurch wird ein horizontales Verrutschen des Dorns verhindert für den Fall, dass das oberste Stütz- oder Ausbauelement verrutscht oder ganz oder teilweise zerstört wird.The device according to the invention with a plate and a mandrel has the advantage that the device described here has a plate which has a diameter that is significantly larger than the opening of the cavity to be closed, and that the device is essentially on the closing opening supports surrounding ground. The device is therefore independent of the shape and stability of the opening or cavity to be closed. This makes a much more cost-effective device possible for closing the cavity formed in the ground, in particular vertical bores or shafts in the ground. The inner wall of the cavity formed in the ground can be partially or completely lined by one or more supporting or expansion elements with a central opening. The mandrel preferably has a length in the direction of gravity that is longer than the uppermost support or expansion element closest to the opening. This prevents the mandrel from slipping horizontally in the event that the top support or expansion element slips or is completely or partially destroyed.

Gemäß einer Ausführungsform kann die Platte kreisförmig, vieleckig oder oval ausgebildet sein. Mit anderen Worten ausgedrückt, kann die Platte in unterschiedlichen Formen ausgebildet sein. Dies hat den Vorteil, dass eine Konstruktion der Platte vielfältige Möglichkeiten anbietet und an die jeweiligen Gegebenheiten um die zu verwahrende Öffnung angepasst werden kann. In einer besonders bevorzugten Ausführungsform ist die Platte rechteckig, insbesondere quadratisch, ausgebildet.According to one embodiment, the plate can be circular, polygonal or oval. In other words, the plate can be formed into different shapes. This has the advantage that the construction of the plate offers a wide range of options and adapts to the respective conditions around the opening to be protected can be adjusted. In a particularly preferred embodiment, the plate is rectangular, in particular square.

Vorzugsweise überragt der Dorn den obersten Rand der Öffnung des zu verwahrenden Hohlraums. Mit anderen Worten ausgedrückt, liegt ein Teil des Dorns oberhalb der Öffnung der zu verwahrenden Bohrung oder des Schachtes.The mandrel preferably projects beyond the uppermost edge of the opening of the cavity to be preserved. In other words, part of the mandrel lies above the opening of the hole or shaft to be protected.

Bevorzugt ist der Dorn in seiner Außenform teilweise oder vollständig zylindrisch oder konisch ausgebildet. Dabei kann, im Fall einer teilweisen oder vollständigen konischen Außenform des Dorns, der konisch ausgeformte Teil des Dorns teilweise oder vollständig in Richtung der Einbringung in den zu verwahrenden Hohlraum von der Platte abstehend und damit in den zu verwahrenden Hohlraum einführbar ausgebildet sein. Dies hat den Vorteil, dass eine Herstellung des Dorns in kostengünstiger Weise, beispielsweise mittels einer Drehmaschine, ermöglicht wird. Der Dorn der erfindungsgemäßen Vorrichtung kann dabei massiv ausgebildet sein oder einen oder mehrere Dornhohlräume umfassen.The outer shape of the mandrel is preferably partially or completely cylindrical or conical. In the case of a partial or completely conical outer shape of the mandrel, the conically shaped part of the mandrel can be designed to partially or completely protrude from the plate in the direction of introduction into the cavity to be preserved and thus to be insertable into the cavity to be preserved. This has the advantage that the mandrel can be produced cost-effectively, for example using a lathe. The mandrel of the device according to the invention can be solid or comprise one or more mandrel cavities.

Der Dorn liegt als separates Element getrennt von der Platte vor und ist mit der Platte verbindbar ausgestaltet. Mit anderen Worten, können Dorn und Platte separat hergestellt, transportiert und erst an Ort und Stelle der Verwendung miteinander verbunden werden. Dies erlaubt eine weitere Flexibilität in der Verwendung der Vorrichtung und führt zu einem ggf. erleichterten Transport der Vorrichtung zum Einsatzort.The mandrel is present as a separate element separate from the plate and is designed to be connectable to the plate. In other words, the mandrel and plate can be manufactured separately, transported and only connected together at the point of use. This allows further flexibility in the use of the device and possibly makes it easier to transport the device to the place of use.

Erfindungsgemäß ist der Dorn einstückig ausgebildet. Damit kann eine unbeabsichtigte Trennung der Teile ausgeschlossen werden.According to the invention, the mandrel is designed in one piece. This prevents any unintentional separation of the parts.

Die Platte weist eine zentrale primäre Plattenöffnung mit einem Durchmesser auf, der kleiner ist als der Durchmesser des von in der erfindungsgemäßen Vorrichtung der zu verwahrenden Öffnung abgewandten Endes des Dorns, während das gegenüberliegende Ende des Dorns einen Durchmesser aufweist, der kleiner ist als der Durchmesser der zentralen primären Plattenöffnung. Damit ist der Dorn derart in die zentrale primäre Plattenöffnung einbringbar, dass ein Teil des Dorns von der Platte in Richtung des zu verwahrenden Hohlraums absteht, während der Dorn nicht vollständig durch die zentrale primäre Plattenöffnung durchführbar ist. Mit anderen Worten ausgedrückt, sind die zentrale primäre Plattenöffnung und der Dorn derart ausgebildet, dass ein Durchfallen des Dorns durch die zentrale primäre Plattenöffnung ausgeschlossen ist. Beispielsweise kann der Dorn eine partielle konische Außenform aufweisen. In diesem Fall kann der Dorn an einem Ende einen kreisförmigen Querschnitt mit einem Durchmesser aufweisen, der kleiner ist als der Durchmesser der zentralen primären Plattenöffnung, wobei das gegenüberliegende Ende des Dorns einen kreisförmigen Querschnitt aufweist mit einem Durchmesser, der größer ist als der Durchmesser der zentralen primären Plattenöffnung. Dadurch ist nur ein Teil des Dorns durch die zentrale primäre Plattenöffnung einbringbar, wobei der restliche Teil des Dorns durch den Rand der zentralen primären Plattenöffnung blockiert (am "Durchrutschen" gehindert) wird. Dies hat den Vorteil, dass eine Verbindung zwischen der Platte und dem Dorn unmittelbar vor der Installation der Vorrichtung in einer einfachen und gerichteten Art und Weise ermöglicht wird.The plate has a central primary plate opening with a diameter that is smaller than the diameter of the end of the mandrel facing away from the opening to be stored in the device according to the invention, while the opposite end of the mandrel has a diameter that is smaller than the diameter of the central primary plate opening. The mandrel can thus be introduced into the central primary plate opening in such a way that part of the mandrel protrudes from the plate in the direction of the cavity to be protected, while the mandrel cannot be completely passed through the central primary plate opening. In other words, the central primary plate opening and the mandrel are designed in such a way that the mandrel cannot fall through the central primary plate opening. For example, the mandrel can have a partially conical outer shape. In this case, the mandrel may have a circular cross-section at one end with a diameter smaller than the diameter of the central primary plate opening, with the opposite end of the mandrel having a circular cross-section with a diameter larger than the diameter of the central one primary plate opening. This means that only part of the mandrel can be inserted through the central primary plate opening, with the remaining part of the mandrel passing through the edge of the central primary plate opening is blocked (prevented from “slipping through”). This has the advantage of allowing a connection between the plate and the mandrel in a simple and directed manner immediately before installation of the device.

Vorzugsweise sind der Dorn und die Platte durch einen Bajonettverschluss oder über Vorsprünge, Fortsätze oder Widerhaken und komplementäre Aussparungen miteinander verbindbar ausgebildet. Mit anderen Worten ausgedrückt, weisen der Dorn und die Platte einen oder mehrere Fortsätze und/oder Aussparungen auf, wobei Dorn und Platte derart komplementär ausgebildet sind, dass Dorn und Platte mittels der Fortsätze und/oder Aussparungen miteinander verbindbar sind. Dies hat den Vorteil, dass der Dorn und die Platte in einer effizienten und gerichteten Weise miteinander gekoppelt werden können, sodass eine werkzeuglose Trennung von dem Dorn und der Platte nach der Montage nicht möglich ist.Preferably, the mandrel and the plate are designed to be connectable to one another by a bayonet lock or via projections, extensions or barbs and complementary recesses. In other words, the mandrel and the plate have one or more extensions and/or recesses, the mandrel and plate being designed to complement each other in such a way that the mandrel and plate can be connected to one another by means of the extensions and/or recesses. This has the advantage that the mandrel and the plate can be coupled together in an efficient and directed manner, so that a tool-free separation of the mandrel and the plate after assembly is not possible.

Bevorzugt weist die Platte Elemente auf, die einen manuellen oder maschinellen Transport oder eine manuelle oder maschinelle Montage erlauben. Mit anderen Worten, weist der Platte Haken, Ösen und/oder Tragegriffelemente auf, sodass die Vorrichtung in einer effizienten Art und Weise transportiert und montiert werden kann.The plate preferably has elements that allow manual or mechanical transport or manual or mechanical assembly. In other words, the plate has hooks, eyes and/or handle elements so that the device can be transported and assembled in an efficient manner.

Gemäß einer weiteren Ausführungsform kann die Platte mindestens eine sekundäre Plattenöffnung aufweisen, die bevorzugt lotrecht zur Fläche der Platte ausgebildet ist, wobei die mindestens eine sekundäre Plattenöffnung derart angeordnet ist, dass siemit der primären Plattenöffnung (5) zum Einführen des mindestens einen Dorns (2) nicht überlappt.According to a further embodiment, the plate can have at least one secondary plate opening, which is preferably formed perpendicular to the surface of the plate, the at least one secondary plate opening being arranged in such a way that it communicates with the primary plate opening (5) for inserting the at least one mandrel (2). not overlapped.

Dies hat den Vorteil, dass Flüssigkeit oder rieselfähiger Feststoff durch die mindestens eine Sekundäre Plattenöffnung hindurchtreten kann. Dies kann zu einer Verringerung des Drucks auf die Vorrichtung führen. Dadurch ist eine stabile Montage der Platte auf dem zu verwahrenden Hohlraum möglich. Des Weiteren kann die mindestens eine sekundäre Plattenöffnung zur Befestigung bzw. Fixierung der Platte auf dem Erdboden mittels beispielsweise eines Erdankers oder dergleichen verwendet werden. Beispielsweise ist die Fläche der Platte viereckig (z.B. rechteckig, insbesondere quadratisch), wobei vier sekundäre Plattenöffnungen jeweils einer der Ecken der Platte zugeordnet sind. Bevorzugt beträgt der Durchmesser einer, mehrerer oder aller sekundären Plattenöffnungen jeweils nicht mehr als ein Viertel des Durchmessers der Grundfläche des Dorns bzw. der zentralen primären Plattenöffnung.This has the advantage that liquid or free-flowing solid can pass through the at least one secondary plate opening. This can lead to a reduction in pressure on the device. This enables the plate to be mounted stably on the cavity to be stored. Furthermore, the at least one secondary plate opening can be used to fasten or fix the plate to the ground using, for example, a ground anchor or the like. For example, the surface of the plate is quadrangular (e.g. rectangular, in particular square), with four secondary plate openings each assigned to one of the corners of the plate. The diameter of one, several or all secondary plate openings is preferably no more than a quarter of the diameter of the base of the mandrel or the central primary plate opening.

Bevorzugt ist die Platte einteilig ausgebildet. Dies hat den Vorteil, dass die Platte keine zusätzlichen Verbindungselemente zum Verbinden von separaten Plattenteilen aufweisen muss. Dies führt zu einer Verringerung der Herstellungskosten.The plate is preferably designed in one piece. This has the advantage that the plate does not have to have any additional connecting elements for connecting separate plate parts. This leads to a reduction in manufacturing costs.

Alternativ kann die Platte mehrteilig ausgebildet sein, wobei die Platte dann mindestens zwei Segmente aufweist, die dauerhaft aneinander befestigbar sind. Dies hat den Vorteil, dass die Platte in vorteilhafter Weise aus Segmenten aus verschiedenen Materialen und/oder Strukturen gebildet sein kann. Da die einzelnen Segmente separat hergestellt werden können und dann später zur vollständigen Platte miteinander verbunden werden können, kann eine Herstellung der Platte mit einer hohen Flexibilität an benutzerdefinierten Eigenschaften ermöglicht werden.Alternatively, the plate can be designed in several parts, the plate then having at least two segments that can be permanently attached to one another. This has the advantage that the Plate can advantageously be formed from segments made of different materials and / or structures. Since the individual segments can be manufactured separately and then later joined together to form a complete panel, the panel can be manufactured with a high degree of flexibility in terms of user-defined properties.

Vorzugsweise weist mindestens eine Seite der Platte mindestens eine eingeprägte oder aufgedruckte Kennzeichnung und/oder einen Marker auf. Mit anderen Worten, kann die Platte auf einer oder mehreren Seiten eingeprägte oder aufgedruckte Kennzeichnungen enthalten, zum Beispiel Text, Zahlen, Symbole oder QR-Code (Quick Response Code). Des Weiteren kann die Platte weitere Marker, formweise Metallkörper, RFID (Radio-Frequency Identification) oder NFC (Near-Field Communication), zu besseren Ortung enthalten. Dies hat den Vorteil, dass Herkunftszeichen und Gütesiegel angebracht sowie eine verbesserte Ortung der Vorrichtung ermöglicht werden.Preferably, at least one side of the plate has at least one embossed or printed identification and/or a marker. In other words, the plate may contain embossed or printed markings on one or more sides, for example text, numbers, symbols or QR code (Quick Response Code). Furthermore, the plate can contain other markers, in the form of metal bodies, RFID (Radio-Frequency Identification) or NFC (Near-Field Communication), for better location. This has the advantage that marks of origin and quality seals are attached and improved location of the device is possible.

Bevorzugt weist der Dorn einen kreisförmigen oder ovalen Querschnitt auf. Dies hat den Vorteil, dass eine Herstellung des Dorns in kostengünstiger Weise, beispielsweise mittels einer Drehmaschine, ermöglicht wird.The mandrel preferably has a circular or oval cross section. This has the advantage that the mandrel can be produced cost-effectively, for example using a lathe.

Gemäß einer weiteren Ausführungsform kann der Dorn mindestens zwei einzelne oder miteinander verstrebte Säulen aufweisen. Dies hat den Vorteil, dass eine Verstärkung des Dorns beziehungsweise der Vorrichtung insgesamt in einer effizienten, materialschonenden Art und Weise ermöglicht ist.According to a further embodiment, the mandrel can have at least two individual columns or columns that are braced together. This has the advantage that the mandrel or the device as a whole can be reinforced in an efficient, material-friendly manner.

Bevorzugt weist der Dorn zumindest eine Dichtlamelle auf. Die Dichtlamelle ist derart ausgebildet und angebracht, dass darüber ein möglichst effektiver Verschluss der Öffnung des zu verwahrenden Hohlraums erreicht wird. Dazu ist die Dichtlamelle in der Regel an einer der Außenseiten des Dorns angeordnet. Dies hat den Vorteil, dass darüber eine effektive Abdichtung der Öffnung des zu verschließenden Hohlraums möglich ist.The mandrel preferably has at least one sealing lamella. The sealing lamella is designed and attached in such a way that the most effective closure of the opening of the cavity to be protected is achieved. For this purpose, the sealing lamella is usually arranged on one of the outer sides of the mandrel. This has the advantage that an effective sealing of the opening of the cavity to be closed is possible.

Bevorzugt ist zwischen dem Dorn und der Innenwand des Hohlraums ein Dämpfungselement angeordnet. Dies hat den Vorteil, dass die Vorrichtung nicht nur gegen in Schwerkraftrichtung gerichtete Kräfte, sondern auch gegen horizontale Kräfte geschützt ist. Dadurch wird erreicht, dass die erfindungsgemäße Vorrichtung den zu verschließenden Hohlraum sicher, dauerhaft und zuverlässig abdeckt.A damping element is preferably arranged between the mandrel and the inner wall of the cavity. This has the advantage that the device is protected not only against forces directed in the direction of gravity, but also against horizontal forces. This ensures that the device according to the invention covers the cavity to be closed securely, permanently and reliably.

Die vorliegende Erfindung bezieht sich auch auf ein Verfahren zum Verschließen eines im Erdboden ausgebildeten Hohlraums, bevorzugt zum Verschließen von vertikalen Bohrungen oder Schächten im Erdboden, besonders bevorzugt zum Verschließen von Filterbrunnen zur Tagebauentwässerung, wobei das erfindungsgemäße Verfahren dadurch gekennzeichnet ist, dass der Hohlraum durch Verwendung einer erfindungsgemäßen Vorrichtung verschlossen wird und kein möglicher Tagesbruch die öffentliche Sicherheit gefährdet. In einer bevorzugten Ausgestaltung des erfindungsgemäßen Verfahrens wird, vor dem Einsetzen der erfindungsgemäßen Vorrichtung, die unmittelbare Umgebung der Öffnung des zu verschließenden Hohlraums plan eingeebnet. Dabei erstreckt sich die unmittelbare Umgebung der Öffnung des Hohlraums bevorzugt mindestens auf die Fläche um die Öffnung des zu verschließenden Hohlraums, die von der Platte der erfindungsgemäßen Vorrichtung abgedeckt wird. Im erfindungsgemäßen Verfahren kann um die Öffnung des zu verschließenden Hohlraums zunächst eine Vertiefung oder Grube ausgehoben werden, bevor die erfindungsgemäße Vorrichtung eingesetzt wird. In diesem Fall, kann die Vertiefung oder Grube nach dem Einsetzen der erfindungsgemäßen Vorrichtung wieder verfüllt und ggf. oberflächenplan eingeebnet werden.The present invention also relates to a method for closing a cavity formed in the ground, preferably for closing vertical bores or shafts in the ground, particularly preferably for closing filter wells for opencast mine drainage, the method according to the invention being characterized in that that the cavity is closed by using a device according to the invention and that no possible daybreak endangers public safety. In a preferred embodiment of the method according to the invention, the immediate surroundings of the opening of the cavity to be closed are leveled before the device according to the invention is inserted. The immediate surroundings of the opening of the cavity preferably extends at least to the area around the opening of the cavity to be closed, which is covered by the plate of the device according to the invention. In the method according to the invention, a depression or pit can first be dug around the opening of the cavity to be closed before the device according to the invention is used. In this case, the depression or pit can be filled again after inserting the device according to the invention and, if necessary, leveled to the surface.

Des Weiteren bezieht sich die vorliegende Erfindung auch auf eine Verwendung der erfindungsgemäßen Vorrichtung, wobei die erfindungsgemäße Vorrichtung eingesetzt wird um einen im Erdboden ausgebildeten Hohlraum zu verschließen, bevorzugt eine vertikale Bohrung oder Schacht im Erdboden, besonders bevorzugt einen Filterbrunnen zur Tagebauentwässerung.Furthermore, the present invention also relates to a use of the device according to the invention, wherein the device according to the invention is used to close a cavity formed in the ground, preferably a vertical bore or shaft in the ground, particularly preferably a filter well for opencast mine drainage.

Zeichnungen:
Ausführungsbeispiele der Erfindung werden anhand der Zeichnungen und der nachfolgenden Beschreibung näher erläutert. Es zeigen:

Figur 1
eine schematische Darstellung einer ersten Ausführungsform der erfindungsgemäßen Vorrichtung;
Figur 2
eine Draufsicht der ersten Ausführungsform aus Figur 1;
Figur 3
eine schematische Darstellung einer zweiten Ausführungsform der erfindungsgemäßen Vorrichtung;
Figur 4
eine schematische Darstellung einer dritten Ausführungsform der erfindungsgemäßen Vorrichtung;
Figur 5
eine Draufsicht einer vierten Ausführungsform der erfindungsgemäßen Vorrichtung;
Figur 6
eine Draufsicht einer fünften Ausführungsform der erfindungsgemäßen Vorrichtung;
Figur 7
eine Draufsicht einer sechsten Ausführungsform der erfindungsgemäßen Vorrichtung;
Figur 8
eine Draufsicht einer siebten Ausführungsform der erfindungsgemäßen Vorrichtung;
Figur 9
eine Draufsicht einer achten Ausführungsform der erfindungsgemäßen Vorrichtung;
Figur 10
eine Draufsicht einer neunten Ausführungsform der erfindungsgemäßen Vorrichtung;
Figur 11
eine Draufsicht einer zehnten Ausführungsform der erfindungsgemäßen Vorrichtung;
Figur 12
eine schematische Darstellung einer elften Ausführungsform der erfindungsgemäßen Vorrichtung;
Figur 13
eine schematische Darstellung einer zwölften Ausführungsform der erfindungsgemäßen Vorrichtung;
Figur 14
eine Draufsicht einer dreizehnten Ausführungsform der erfindungsgemäßen Vorrichtung;
Figur 15
eine Draufsicht einer vierzehnten Ausführungsform der erfindungsgemäßen Vorrichtung;
Figur 16
eine Draufsicht einer fünfzehnten Ausführungsform der erfindungsgemäßen Vorrichtung;
Figur 17
eine Draufsicht einer sechzehnten Ausführungsform der erfindungsgemäßen Vorrichtung;
Figur 18
eine Draufsicht einer siebzehnten Ausführungsform der erfindungsgemäßen Vorrichtung;
Figur 19
eine Draufsicht einer achtzehnten Ausführungsform der erfindungsgemäßen Vorrichtung;
Figur 20
eine Draufsicht einer neunzehnten Ausführungsform der erfindungsgemäßen Vorrichtung; und
Figur 21
eine Draufsicht einer zwanzigsten Ausführungsform der erfindungsgemäßen Vorrichtung;
Drawings:
Embodiments of the invention are explained in more detail with reference to the drawings and the following description. Show it:
Figure 1
a schematic representation of a first embodiment of the device according to the invention;
Figure 2
a top view of the first embodiment Figure 1 ;
Figure 3
a schematic representation of a second embodiment of the device according to the invention;
Figure 4
a schematic representation of a third embodiment of the device according to the invention;
Figure 5
a top view of a fourth embodiment of the device according to the invention;
Figure 6
a top view of a fifth embodiment of the device according to the invention;
Figure 7
a top view of a sixth embodiment of the device according to the invention;
Figure 8
a top view of a seventh embodiment of the device according to the invention;
Figure 9
a top view of an eighth embodiment of the device according to the invention;
Figure 10
a top view of a ninth embodiment of the device according to the invention;
Figure 11
a top view of a tenth embodiment of the device according to the invention;
Figure 12
a schematic representation of an eleventh embodiment of the device according to the invention;
Figure 13
a schematic representation of a twelfth embodiment of the device according to the invention;
Figure 14
a top view of a thirteenth embodiment of the device according to the invention;
Figure 15
a top view of a fourteenth embodiment of the device according to the invention;
Figure 16
a top view of a fifteenth embodiment of the device according to the invention;
Figure 17
a top view of a sixteenth embodiment of the device according to the invention;
Figure 18
a top view of a seventeenth embodiment of the device according to the invention;
Figure 19
a top view of an eighteenth embodiment of the device according to the invention;
Figure 20
a top view of a nineteenth embodiment of the device according to the invention; and
Figure 21
a top view of a twentieth embodiment of the device according to the invention;

Ausführungsformen der ErfindungEmbodiments of the invention

In der Figur 1 ist eine Vorrichtung 10 gemäß einer ersten Ausführungsform in einer schematischen Schnittdarstellung gezeigt. Die Vorrichtung 10 ist zum Verschließen eines im Erdboden 11 ausgebildeten Hohlraums 12 ausgebildet. Die Vorrichtung 10 umfasst eine Platte 1 und einen Dorn 2. Die Platte 1 weist eine Fläche auf, die mindestens zweifach größer ist als die Fläche der abzudeckenden Öffnung 3 des Hohlraums 12. Dabei ist die Platte 1 auf dem die Öffnung 3 umgebenden Erdboden 11 abgestützt. Wie in der Figur 2 veranschaulicht, weist die Platte 1 eine kreisförmige Form auf. Der Dorn 2 umfasst ein Kopfelement 31 sowie ein Körperelement 32. Der Dorn 2 wird in Mitte der Platte 1 und normal zur Plattenebene an der Platte 1 formschlüssig gehalten und in Schwerkraftrichtung angeordnet. Dabei ist der Dorn 2, beziehungsweise das Körperelement 32, durch die Öffnung 3 in den Hohlraum 12 einbringbar, wobei der Dorn 2 vorzugsweise eine Länge in Schwerkraftrichtung von mindestens 50 cm aufweist, bevorzugt von mindestens 60 cm, weiter bevorzugt von mindestens 80 cm, insbesondere bevorzugt von 60 cm bis 180 cm bzw. von 80 cm bis 150 cm. Gemäß der in der Figur 2 veranschaulichten Ausführungsform, weist der Dorn 2, beziehungsweise das Kopfelement 31, eine kreisförmige Form auf.In the Figure 1 a device 10 according to a first embodiment is shown in a schematic sectional view. The device 10 is designed to close a cavity 12 formed in the ground 11. The device 10 comprises a plate 1 and a mandrel 2. The plate 1 has an area that is at least twice larger than the area of the opening 3 of the cavity 12 to be covered. The plate 1 is supported on the ground 11 surrounding the opening 3 . Like in the Figure 2 illustrated, the plate 1 has a circular shape. The mandrel 2 comprises a head element 31 and a body element 32. The mandrel 2 is held in a form-fitting manner on the plate 1 in the middle of the plate 1 and normal to the plate plane and is arranged in the direction of gravity. The mandrel 2, or the body element 32, can be introduced into the cavity 12 through the opening 3, the mandrel 2 preferably having a length in the direction of gravity of at least 50 cm, preferably at least 60 cm, more preferably at least 80 cm, in particular preferably from 60 cm to 180 cm or from 80 cm to 150 cm. According to the in the Figure 2 illustrated embodiment, the mandrel 2, or the head element 31, has a circular shape.

Gemäß Figur 1, kann der Dorn 2 in seiner Außenform partiell konisch ausgebildet sein, wobei das Ende D1 des Dorns 2 an der Plattenseite einen größeren Durchmesser aufweist im Vergleich zum Durchmesser am gegenüberliegenden Ende D2 des Dorns 2. Damit ist der Durchmesser des Querschnitts am Ende D2 kleiner als der Durchmesser des Querschnitts am Ende D1. Des Weiteren ist der Durchmesser des Querschnitts am Ende D2 kleiner als der Durchmesser des zu verwahrenden Hohlraums 12 bzw. der Öffnung 3 des zu verwahrenden Hohlraums 12. Des Weiteren ist es zu sehen, dass die Länge des Dorns 2 den obersten Rand 4 der Öffnung 3 des zu verwahrenden Hohlraums 12 überragt.According to Figure 1 , the mandrel 2 can be partially conical in its outer shape, with the end D1 of the mandrel 2 on the plate side having a larger diameter compared to the diameter at the opposite end D2 of the mandrel 2. The diameter of the cross section at the end D2 is therefore smaller than the diameter of the cross section at end D1. Furthermore, the diameter of the cross section at the end D2 is smaller than the diameter of the cavity 12 to be kept or the opening 3 of the cavity 12 to be kept. Furthermore, it can be seen that the length of the mandrel 2 exceeds the uppermost edge 4 of the opening 3 of the cavity 12 to be kept.

Figur 3 veranschaulicht eine schematische Darstellung einer weiteren Ausführungsform der erfindungsgemäßen Vorrichtung 10. Der Dorn 2 ist in seiner Außenform vollständig zylindrisch ausgebildet, also mit einem konstanten Querschnitt über die Länge des Körperelements 32 des Dorns 2. Mit anderen Worten ausgedrückt, weist das Ende D1 des Dorns 2, beziehungsweise des Körperelements 32, an der der Platte zugewandten Seite einen Querschnitt auf, der dem Querschnitt am Ende D2 entspricht. Der Durchmesser a des Querschnitts des Endes D1 sowie D2 des Dorns 2 ist an den Durchmesser der Öffnung 3 des zu verschließenden Hohlraums 12 angepasst und kann beispielsweise zwischen 300 mm und 100 mm liegen insbesondere bei 315 mm. Das Körperelement 32 umfasst einen ersten Körperteil 41 und einen zweiten Körperteil 42. Der erste Körperteil 41 weist eine Länge b auf, die z.B. zwischen 160 mm und 230 mm liegt, insbesondere bei 194 mm. Der zweite Körperteil 42 weist eine Länge c auf, die zwischen 800 mm und 1200 mm liegt, insbesondere bei 1000 mm. Der erste Körperteil 41 kann mit dem zweiten Körperteil 42 mittels einer Stumpfnaht 43 verbunden sein. Das Kopfelement 31 des Dorns 2 umfasst ein erstes Kopfteil 44 und ein zweites Kopfteil 45, die kraftschlüssig miteinander beispielhaft mittels Schweißen verbunden sind. Das erste Kopfteil 44 weist eine Dicke g auf, die zwischen 15 mm und 50 mm liegt, insbesondere bei 30 mm. Das zweite Kopfteil 45 weist eine Dicke h auf, die zwischen 15 mm und 35 mm liegt, insbesondere bei 25 mm. Das erste Kopfteil 44 weist einen Durchmesser d auf, der zwischen 320 mm und 360 mm liegt, insbesondere bei 340 mm. Das zweite Kopfteil 45 weist einen Durchmesser e auf, der zwischen 250 mm und 300 mm liegt, insbesondere bei 277,6 mm. Dabei kann der Dorn 2 am Ende D1 eine zusätzliche Erweiterung 46 aufweisen, die einen Durchmesser f aufweist, der zwischen 315 mm und 390 mm liegt, insbesondere bei 370 mm. Das Kopfelement 31 kann mit dem Körperelement 32 beispielsweise mittels eines Vorschweißbundes 47 miteinander verbunden sein. Figure 3 illustrates a schematic representation of a further embodiment of the device 10 according to the invention. The mandrel 2 is completely cylindrical in its external shape, i.e. with a constant cross section over the length of the body element 32 of the mandrel 2. In other words, the end D1 of the mandrel 2 points , or the body element 32, on the side facing the plate has a cross section that corresponds to the cross section at the end D2. The diameter a of the cross section of the end D1 and D2 of the mandrel 2 is adapted to the diameter of the opening 3 of the cavity 12 to be closed and can, for example, be between 300 mm and 100 mm, in particular 315 mm. The body element 32 comprises a first body part 41 and a second body part 42. The first body part 41 has a length b, which is, for example, between 160 mm and 230 mm, in particular 194 mm. The second body part 42 has a length c which is between 800 mm and 1200 mm, in particular 1000 mm. The first body part 41 can be connected to the second body part 42 by means of a butt seam 43. The head element 31 of the mandrel 2 includes a first head part 44 and a second head part 45, which are non-positively connected to one another, for example by welding. The first head part 44 has a thickness g that is between 15 mm and 50 mm, in particular 30 mm. The second head part 45 has a thickness h that is between 15 mm and 35 mm, in particular 25 mm. The first head part 44 has a diameter d that is between 320 mm and 360 mm, in particular 340 mm. The second head part 45 has a diameter e that is between 250 mm and 300 mm, in particular 277.6 mm. The mandrel 2 can have an additional extension 46 at the end D1, which has a diameter f that is between 315 mm and 390 mm, in particular 370 mm. The head element 31 can be connected to the body element 32, for example by means of a pre-weld collar 47.

Der Dorn 2 kann einen Dornhohlraum aufweisen. Bevorzugt überragt ein Teil des Dorns 2 die Platte 1. Der Dornhohlraum weist den Durchmesser e auf, der zwischen 250 mm und 300 mm liegt, insbesondere bei 277,6 mm. Des Weiteren kann der Dorn 2 in seiner Außenform partiell oder vollständig zylindrisch oder konisch ausgebildet sein.The mandrel 2 can have a mandrel cavity. Part of the mandrel 2 preferably projects beyond the plate 1. The mandrel cavity has a diameter e which is between 250 mm and 300 mm, in particular 277.6 mm. Furthermore, the outer shape of the mandrel 2 can be partially or completely cylindrical or conical.

Die Platte 1 weist eine zentrale primäre Plattenöffnung 5 auf, wobei der Dorn 2 in die zentrale primäre Plattenöffnung eingebracht wird. Der Dorn 2 ist als separates Element mit der Platte 1 verbindbar. Zum Beispiel weist die Platte 1 die zentrale primäre Plattenöffnung 5 auf, durch welche der Dorn 2 in den Hohlraum 12 eingebracht werden kann. Dabei ist es vorgesehen, dass die Platte 1 eine zentrale primäre Plattenöffnung 5 mit einem Durchmesser kleiner als einen Durchmesser des Dorns 2 aufweist, sodass nur ein Teil des Dorns 2 durch die zentrale Plattenöffnung 5 einbringbar ist und der Dorn 2 derart ausgebildet ist, dass ein Durchfallen des Dorns 2 durch die zentrale primäre Plattenöffnung 5 ausgeschlossen ist. Beispielsweise kann der Dorn 2 wenigstens teilweise konisch ausgebildet sein. Der Dorn 2 weist am Ende D2 einen Querschnitt mit einem Durchmesser auf, der kleiner ist als der Durchmesser der zentralen primären Plattenöffnung 5, wobei das Ende D1 des Dorns 2 einen kreisförmigen Querschnitt mit einem Durchmesser aufweist, der größer ist als der Durchmesser der zentralen primären Plattenöffnung 5. Dadurch wird nur ein Teil des Dorns 2 durch die zentrale primäre Plattenöffnung 5 einbringbar, wobei der restliche Teil des Dorns 2 durch den Rand 6 der zentralen primären Plattenöffnung 5 aufgehalten wird.The plate 1 has a central primary plate opening 5, with the mandrel 2 being inserted into the central primary plate opening. The mandrel 2 can be connected to the plate 1 as a separate element. For example, the plate 1 has the central primary plate opening 5 through which the mandrel 2 can be introduced into the cavity 12. It is provided that the plate 1 has a central primary plate opening 5 with a diameter smaller than a diameter of the mandrel 2, so that only a part of the mandrel 2 can be inserted through the central plate opening 5 and the mandrel 2 is designed such that a Falling of the mandrel 2 through the central primary plate opening 5 is excluded. For example, the mandrel 2 can be at least partially conical. The mandrel 2 has a cross section at the end D2 with a diameter smaller than the diameter of the central primary plate opening 5, the end D1 of the mandrel 2 having a circular cross section with a diameter larger than the diameter of the central primary Plate opening 5. This means that only part of the mandrel 2 can be inserted through the central primary plate opening 5, with the remaining part of the mandrel 2 being stopped by the edge 6 of the central primary plate opening 5.

Figur 4 veranschaulicht eine weitere Ausführungsform der Vorrichtung 10. Vorzugsweise sind der Dorn 2 und die Platte 1 durch einen Bajonettverschluss 13 oder Widerhaken 14 miteinander verbindbar ausgebildet. So kann beispielsweise an der Außenseite des Körperelements 32 des Dorns 2 ein Längsschlitz angeordnet sein, an dessen Ende sich rechtwinklig ein kurzer Querschlitz anschließt (in den Figuren nicht veranschaulicht). Des Weiteren besitzt die innere Seite der zentralen primären Plattenöffnung 5 der Platte 1 einen Fortsatz, der in den Querschlitz einführbar ist und dann die feste Verbindung bewirkt. Wenn das Köperelement 32 durch die zentrale primäre Plattenöffnung 5 eingeschoben wird, kann eine Steck-Dreh-Bewegung erfolgen, wodurch der Fortsatz in dem korrespondierenden Querschlitz durch den Längsschlitz einrasten kann. Figure 4 illustrates a further embodiment of the device 10. The mandrel 2 and the plate 1 are preferably designed to be connectable to one another by a bayonet lock 13 or barb 14. For example, a longitudinal slot can be arranged on the outside of the body element 32 of the mandrel 2, the end of which is adjoined at right angles by a short transverse slot (not illustrated in the figures). Furthermore, the inner side of the central primary plate opening 5 of the plate 1 has an extension which can be inserted into the transverse slot and then effects the firm connection. If the body element 32 is inserted through the central primary plate opening 5, a plug-and-turn movement can take place, whereby the extension can snap into the corresponding transverse slot through the longitudinal slot.

Gemäß einer in der Figur 5 veranschaulichten weiteren Ausführungsform der Vorrichtung 10 kann die Platte 2 mehrteilig, beispielsweise in vier Segmente oder Teile 15, 16, 17, 18, ausgebildet sein. Dabei sind zumindest zwei Segmente, bevorzugt mindestens vier Segmente oder Teile 15, 16, 17, 18, miteinander befestigbar. Bevorzugt ist die Platte 1 derart ausgestaltet, dass die Platte 1 hinreichende Stabilität besitzt, die durch Werkstoffeigenschaften, Dicke der Platte 1 oder die innere Struktur der Platte 1 bewirkt wird, um einwirkenden vertikalen Kräften zu widerstehen.According to one in the Figure 5 illustrated further embodiment of the device 10, the plate 2 can be formed in several parts, for example in four segments or parts 15, 16, 17, 18. At least two segments, preferably at least four segments or parts 15, 16, 17, 18, can be fastened to one another. The plate 1 is preferably designed in such a way that the plate 1 has sufficient stability, which is caused by material properties, thickness of the plate 1 or the internal structure of the plate 1, in order to withstand acting vertical forces.

Figur 6 zeigt eine weitere Ausführungsform der Vorrichtung 10, wobei die Platte 1 Elemente, insbesondere Tragegriffelemente 19, aufweist, die einem manuellen oder maschinellen Transport oder einer manuellen oder maschinellen Montage dienen. Die Tragegriffelemente 19 können derart an der Platte 1 angeordnet sein, dass die Tragegriffelemente 19 drehbar um eine Achse 20 entlang der Fläche der Platte 1 ausgebildet sind. Dies kann eine Drehung der Tragegriffelemente 19 um die Achse 20 zum Greifen des Tragegriffelements 19 und zum Tragen der Platte 1 ermöglichen. Des Weiteren kann die Seite 21 der Platte 1 eine eingeprägte oder aufgedruckte Kennzeichnung 22 und einen Marker 23 aufweisen. Figure 6 shows a further embodiment of the device 10, wherein the plate 1 has elements, in particular carrying handle elements 19, which are used for manual or mechanical transport or manual or mechanical assembly. The carrying handle elements 19 can be arranged on the plate 1 in such a way that the carrying handle elements 19 are designed to be rotatable about an axis 20 along the surface of the plate 1. This may allow rotation of the carrying handle elements 19 about the axis 20 for gripping the carrying handle element 19 and carrying the plate 1. Furthermore, the side 21 of the plate 1 can have an embossed or printed identification 22 and a marker 23.

Figuren 7 bis 11 veranschaulichten verschiedene weitere Ausführungsformen der Vorrichtung 10, wobei die Platte 1 und der Dorn 2 bzw. das Kopfelement 31 unterschiedliche geometrische Formen aufweisen. Gemäß der Figur 7 ist die Platte 1 bevorzugt quadratisch ausgebildet, wobei der Dorn 2 einen kreisförmigen Querschnitt aufweist. Gemäß den Figuren 8 bis 11 ist die Platte 1 bevorzugt kreisförmig ausgebildet, wobei der Dorn 2 einen vieleckigen Querschnitt (Figur 8), einen quadratischen Querschnitt (Figuren 9 und 10) bzw. einen dreieckigen Querschnitt (Figur 11) aufweist. Erfindungsgemäß können die Platte 1 und/oder der Dorn 2 oval ausgeformt sein. Figures 7 to 11 illustrated various further embodiments of the device 10, wherein the plate 1 and the mandrel 2 or the head element 31 have different geometric shapes. According to the Figure 7 the plate 1 is preferably square, with the mandrel 2 having a circular cross section. According to the Figures 8 to 11 the plate 1 is preferably circular, with the mandrel 2 having a polygonal cross section ( Figure 8 ), a square cross section ( Figures 9 and 10 ) or a triangular cross section ( Figure 11 ) having. According to the invention, the plate 1 and/or the mandrel 2 can be oval shaped.

Figur 12 veranschaulicht eine weitere Ausführungsform der Vorrichtung 10, gemäß welcher der Dorn 2 mindestens eine Dichtlamelle 24 aufweist. Die Dichtlamelle 24 kann aus verschiedenen Werkstoffen gebildet sein, beispielsweise aus verschiedenen Copolymeren. Des Weiteren kann der Dorn 2 bzw. das Körperelement 32 mehrteilig ausgebildet sein, wie in Figur 13 gezeigt ist. Ein erstes Teil 33 ist an der Außenform des Körperelements 32 angeordnet bzw. damit verbunden. Des Weiteren kann ein zweites Teil 34 an der Außenseite des ersten Teils 33 angeordnet bzw. damit verbunden sein. Dabei können die einzelne Teile 32, 33 aus unterschiedlichen Werkstoffen gebildet sein und/oder unterschiedliche Strukturen aufweisen. Figure 12 illustrates a further embodiment of the device 10, according to which the mandrel 2 has at least one sealing lamella 24. The sealing plate 24 can be formed from different materials, for example from different copolymers. Furthermore, the mandrel 2 or the body element 32 can be designed in several parts, as in Figure 13 is shown. A first part 33 is arranged on or connected to the outer shape of the body element 32. Furthermore, a second part 34 can be arranged on the outside of the first part 33 or connected to it. The individual parts 32, 33 can be made from different materials and/or have different structures.

Figur 14 und Figur 15 zeigen weitere Ausführungsformen der Vorrichtung 10, gemäß welchen der Dorn 2 mindestens zwei einzelne Säulen 35 aufweist. Gemäß Figur 14 weist der Dorn 2 zwei einzelne Säulen 35 auf und gemäß Figur 15 weist der Dorn 2 drei einzelne Säulen 35 auf. Figuren 16 und 17 veranschaulichen Ausführungsformen der Vorrichtung 10, gemäß welchen der Dorn 2 mindestens zwei mittels einer Verstrebung 36 miteinander verstrebten Säulen 35 auf. Gemäß Figur 16 weist der Dorn 2 zwei miteinander mittels einer Verstrebung 36 verstrebte Säulen 35 auf und gemäß Figur 17 weist der Dorn 2 drei miteinander mittels zwei Verstrebungen 36 verstrebte Säulen 35 auf. Figure 14 and Figure 15 show further embodiments of the device 10, according to which the mandrel 2 has at least two individual columns 35. According to Figure 14 the mandrel 2 has two individual columns 35 and according to Figure 15 the mandrel 2 has three individual columns 35. Figures 16 and 17 illustrate embodiments of the device 10, according to which the mandrel 2 has at least two columns 35 braced together by means of a strut 36. According to Figure 16 the mandrel 2 has two columns 35 braced together by means of a strut 36 and according to Figure 17 the mandrel 2 has three columns 35 braced together by means of two struts 36.

Figuren 18 und 19 zeigen weitere Ausführungsformen der Vorrichtung 10, gemäß welchen der Dorn 2 an seiner Außenseite 37 mindestens einen Fortsatz 38 aufweist. Gemäß Figur 18 weist der Dorn 2 an seiner Außenseite 37 vier Fortsätze 38 auf und gemäß Figur 19 weist der Dorn 2 an seiner Außenseite 37 drei Fortsätze 38 auf. Gemäß einer in der Figur 20 veranschaulichten Ausführungsform der Vorrichtung 10 weist der Dorn 2 an seiner Außenseite 37 vier Aussparungen 39 auf. Figures 18 and 19 show further embodiments of the device 10, according to which the mandrel 2 has at least one extension 38 on its outside 37. According to Figure 18 the mandrel 2 has four extensions 38 on its outside 37 and according to Figure 19 the mandrel 2 has three extensions 38 on its outside 37. According to one in the Figure 20 illustrated embodiment of the device 10, the mandrel 2 has four recesses 39 on its outside 37.

Figur 21 zeigt eine schematische Darstellung einer weiteren Ausführungsform der Vorrichtung 10, wobei die Platte 1 mindestens eine sekundäre Plattenöffnung 40 aufweist, die senkrecht/lotrecht zur Grundfläche der Platte 1 ausgebildet ist, wobei die mindestens eine sekundäre Plattenöffnung 40 derart angeordnet ist, dass diese mit der Grundfläche des Dorns 2 bzw. mit der Grundfläche der zentralen primären Plattenöffnung 5 nicht überlappt. In der Figur 21 gezeigten Ausführungsform ist die Platte 1 quadratisch ausgebildet und weist eine zentrale primäre Plattenöffnung 5 sowie vier sekundäre Plattenöffnungen 40 auf. Die Platte 1 ist quadratisch ausgebildet mit einer Seitenlänge i, die zwischen 800 mm und 1200 mm liegt, insbesondere bei 1000 mm. Die primäre zentrale Plattenöffnung 5 weist einen Durchmesser k auf, der zwischen 310 mm und 360 mm liegt, insbesondere bei 340 mm. Die sekundäre Plattenöffnung kann in einem Abstand j von dem jeweiligen Plattenrand liegen, wobei der Abstand j zwischen 100 mm und 200 mm liegen kann, insbesondere 150 mm beträgt. Des Weiteren weist die jeweilige sekundäre Plattenöffnung 40 einen Durchmesser I auf, der zwischen 50 mm und 200 mm liegt, insbesondere bei 100 mm. Figure 21 shows a schematic representation of a further embodiment of the device 10, wherein the plate 1 has at least one secondary plate opening 40, which is formed perpendicular/perpendicular to the base surface of the plate 1, the at least one secondary plate opening 40 being arranged in such a way that it is connected to the base surface of the mandrel 2 or with the base area of the central primary plate opening 5 does not overlap. In the Figure 21 In the embodiment shown, the plate 1 is square and has a central primary plate opening 5 and four secondary plate openings 40. The plate 1 is square with a side length i that is between 800 mm and 1200 mm, in particular 1000 mm. The primary central plate opening 5 has a diameter k that is between 310 mm and 360 mm, in particular 340 mm. The secondary plate opening can be at a distance j from the respective plate edge, the distance j can be between 100 mm and 200 mm, in particular 150 mm. Furthermore, the respective secondary plate opening 40 has a diameter I that is between 50 mm and 200 mm, in particular 100 mm.

BezugszeichenReference symbols

11
Platteplate
22
Dornmandrel
33
Hohlraumöffnungcavity opening
44
oberer Randupper edge
55
zentrale primäre Plattenöffnungcentral primary plate opening
1010
Vorrichtungcontraption
1111
Erdbodenground
1212
Hohlraumcavity
1313
BajonettverschlussBayonet fitting
1414
WiderhakenBarbs
1515
SegmentteilSegment part
1616
SegmentteilSegment part
1717
SegmentteilSegment part
1818
SegmentteilSegment part
1919
TragegriffelementCarrying handle element
2020
Achseaxis
2121
Seite der Platte 1Side of plate 1
2222
KennzeichnungLabelling
2323
Markermarker
2424
Dichtlamellesealing lamella
3131
KopfelementHead element
3232
Körperelementbody element
3333
erstes Teilfirst part
3434
zweites Teilsecond part
3535
Säulepillar
3636
VerstrebungBracing
3737
AußenseiteOutside
3838
Fortsatzappendage
3939
Aussparungenrecesses
4040
sekundäre Plattenöffnungsecondary plate opening
4141
erster Körperteilfirst body part
4242
zweiter Körperteilsecond body part
4343
Stumpfnahtbutt weld
4444
erster Körperteilfirst body part
4545
zweiter Körperteilsecond body part
4646
zusätzliche Erweiterungadditional extension
4747
VorschweißbundPre-weld collar
D 1D1
Ende des DornsEnd of the thorn
D 2D2
Ende des DornsEnd of the thorn

Claims (16)

  1. Device (10) for closing a cavity (12) formed in the ground (11),
    characterised in that
    the device (10) comprises the following elements:
    - a plate (1) having an area at least two times greater than the area of an opening (3) of the cavity (12) to be covered, the plate (1) being supportable on the ground (11) surrounding the opening (3), the plate (1) having a central primary plate opening (5) with a diameter (k); and
    - at least one mandrel (2) having an end (D1) facing away from the opening to be stored and an opposite end (D2), the mandrel (2) being insertable as a separate element into the central primary plate opening, so that the mandrel (2) is arranged in the centre of the plate (1) and normal to the plate plane on the plate (1) in the direction of gravity and the opposite end (D2) of the at least one mandrel (2) is insertable through the opening (3) into the cavity (12), wherein the diameter (k) of the central primary plate opening (5) is smaller than the diameter of the mandrel (2) at the end (D1) and larger than the diameter of the mandrel (2) at the opposite end (D2), so that falling through of the mandrel (2) through the central primary plate opening (5) is excluded and wherein the at least one mandrel (2) is formed in one piece and has a length in the direction of gravity of at least 50 cm.
  2. Device (10) according to claim 1, wherein the plate (1) is square with a side length (i) of 800 mm to 1200 mm.
  3. Device of claim 2, wherein the central primary plate opening has a diameter (k) of from 310 mm to 360 mm.
  4. Device (10) according to one of the preceding claims, wherein the at least one mandrel (2) is partially or completely cylindrical or conical in its outer shape.
  5. Device (10) according to any one of the preceding claims, wherein the at least one mandrel (2) has a length in the direction of gravity from 60 cm to 180 cm, preferably from 80 cm to 150 cm.
  6. Device (10) according to any one of the preceding claims, wherein the mandrel (2) has at its end (D1) an enlargement (46) with a diameter (f), wherein the diameter (k) of the central primary plate opening (5) is smaller than the diameter (f) of the enlargement at the end (D1) of the mandrel (2).
  7. Device (10) according to any one of the preceding claims, wherein the at least one mandrel (2) and the plate (1) are designed to be connectable to each other by a bayonet catch or a barb.
  8. Device (10) according to any one of the preceding claims, wherein the plate (1) has at least one secondary plate opening (40) formed perpendicularly to the surface of the plate (1), the at least one secondary plate opening (40) being arranged such that it does not overlap with the primary plate opening (5) for insertion of the at least one mandrel (2) or with the base surface of the at least one mandrel (2).
  9. Device (10) according to any one of the preceding claims, wherein the at least one mandrel (2) has a circular or oval cross-section.
  10. Device (10) according to one of the preceding claims, wherein a head element (31) is provided, which is connected to the mandrel (2) at the end (D1), preferably by means of a stub end (47).
  11. Device (10) according to any one of the preceding claims, wherein the at least one mandrel (2) has at least one projection (38) or recess (39) on its outer side.
  12. Method for closing a cavity (12) formed in the ground (11), in particular for closing vertical bores or shafts in the ground,
    characterised in that
    a device according to any one of claims 1 to 11 is used.
  13. Method of claim 12, wherein the cavity is a filter well for drainage in open-cast mining.
  14. Method according to claim 12 or 13, wherein prior to inserting the device according to any one of claims 1 to 11, the immediate vicinity of the opening of the cavity to be sealed is planar levelled.
  15. Use of a device according to any one of claims 1 to 11 for closing a cavity formed in the ground, in particular for closing vertical bores or shafts in the ground.
  16. Use according to claim 15, wherein the cavity is a filter well for drainage in open-cast mining.
EP20172065.3A 2019-07-02 2020-04-29 Device for closing a cavity formed in the ground Active EP3760830B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202019103633.8U DE202019103633U1 (en) 2019-07-02 2019-07-02 Device for closing a cavity formed in the ground

Publications (2)

Publication Number Publication Date
EP3760830A1 EP3760830A1 (en) 2021-01-06
EP3760830B1 true EP3760830B1 (en) 2023-09-13

Family

ID=67992020

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (3)

Country Link
EP (1) EP3760830B1 (en)
DE (1) DE202019103633U1 (en)
PL (1) PL3760830T3 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4673034A (en) * 1986-01-06 1987-06-16 Hansen Donald J Cased water wells having flexible pad
NL1004421C1 (en) * 1996-11-04 1997-04-03 Eijkelkamp Agrisearch Equip Bv Borehole cover.
FR2844296B1 (en) * 2002-09-05 2004-11-19 Lefeuvre Sa PROTECTIVE HAIR FOR WELLS OR DRILLING
DE202010009507U1 (en) * 2010-06-22 2010-11-04 Rexholm, John Device for sealing a damaged outlet nozzle (II)
US8413583B2 (en) * 2010-07-23 2013-04-09 Samuel T. Sloan Hole covering and locator

Also Published As

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PL3760830T3 (en) 2024-03-04
EP3760830A1 (en) 2021-01-06
DE202019103633U1 (en) 2019-09-03

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