EP3760830A1 - Dispositif de fermeture d'une cavité formée dans le sol - Google Patents

Dispositif de fermeture d'une cavité formée dans le sol Download PDF

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Publication number
EP3760830A1
EP3760830A1 EP20172065.3A EP20172065A EP3760830A1 EP 3760830 A1 EP3760830 A1 EP 3760830A1 EP 20172065 A EP20172065 A EP 20172065A EP 3760830 A1 EP3760830 A1 EP 3760830A1
Authority
EP
European Patent Office
Prior art keywords
plate
mandrel
opening
cavity
ground
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20172065.3A
Other languages
German (de)
English (en)
Other versions
EP3760830B1 (fr
Inventor
Michael Strzodka
Jan Magister
Andreas BÜRGER
Peter Biegel
Sokrates Giapapas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GMB GmbH
Original Assignee
GMB GmbH
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Filing date
Publication date
Application filed by GMB GmbH filed Critical GMB GmbH
Publication of EP3760830A1 publication Critical patent/EP3760830A1/fr
Application granted granted Critical
Publication of EP3760830B1 publication Critical patent/EP3760830B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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 break in daylight.
  • filter wells have been used for open pit dewatering for years. A part of these filter wells is being dredged over by the advancing opencast mining, another part remains standing and must be kept. If the storage is carried out improperly, the slipping of masses into the hollow space of the filter tube can lead to day breaks. In order to avoid such events and the resulting threats to public safety, it is necessary to keep filter wells in safe custody. So far, such subsequent safekeeping has been carried out by subsequently drilling open the filter well and then backfilling it with a clay-ash-sediment suspension. Such a process leads to considerable costs.
  • 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 simply, securely, inexpensively, reliably and permanently.
  • the immediate vicinity of the opening to be closed can consist of soil, which can be composed of loose or solid rock according to the local geology.
  • the immediate surroundings of the opening to be closed can be leveled with suitable aids.
  • 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 to Closing opening is supported by the surrounding substrate.
  • the device is thus independent of the shape and stability of the opening to be closed or the cavity to be closed. This enables a much more cost-effective device 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 support or expansion elements with a central opening.
  • the mandrel preferably has a length in the direction of gravity which 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 extension element slips or is completely or partially destroyed.
  • the plate can be circular, polygonal or oval.
  • the plate can be formed in different shapes. This has the advantage that the construction of the plate offers a wide range of options and can be adapted to the respective conditions around the opening to be kept.
  • the plate is rectangular, in particular square.
  • the mandrel preferably projects beyond the uppermost edge of the opening of the cavity to be stored. In other words, part of the mandrel lies above the opening of the bore or shaft to be kept.
  • the mandrel is preferably partially or completely cylindrical or conical in its outer shape.
  • the conically shaped part of the mandrel can partially or completely protrude from the plate in the direction of introduction into the cavity to be stored and thus be insertable into the cavity to be stored.
  • the mandrel of the device according to the invention can be solid or comprise one or more mandrel cavities.
  • the mandrel is preferably connected in one piece to the plate. This has the advantage that the complete device can be produced in a simple manner, for example by means of a casting process, and can be easily transported. Furthermore, no additional connecting elements are required to connect the components of the device to one another, which can lead to further cost savings.
  • the mandrel can be present as a separate element separate from the plate and be designed to be connectable to the plate.
  • the mandrel and plate can be manufactured separately, transported and only connected to one another on the spot of use. This allows a further flexibility in the use of the device and leads to a possibly easier transport of the device to the place of use.
  • the mandrel is preferably designed in one piece.
  • the mandrel can be composed of several parts. If the mandrel is made up of several parts, these parts are preferably connected to one another in a non-positive manner. In this way an unintentional separation of the parts can be excluded.
  • the plate has a central primary plate opening with a diameter that is smaller than the diameter of the opening to be kept in the device according to the invention remote end of the mandrel, while the opposite end of the mandrel has a diameter which 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 stored, 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 preferably designed such that they can be connected to one another by means of a bayonet lock or 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 be complementary 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 machine transport or manual or machine assembly.
  • the plate has hooks, eyes and / or handle elements so that the device can be transported and assembled in an efficient manner.
  • the at least one secondary plate opening can be used for fastening or fixing the plate on the ground by means of, for example, a ground anchor or the like.
  • the surface of the plate is square (for example rectangular, in particular square), with four secondary plate openings each being assigned to one of the corners of the plate.
  • the diameter of one, several or all of the secondary plate openings is preferably in each case not more than a quarter of the diameter of the base area of the mandrel or of 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 cost.
  • the plate can be made in several parts, the plate then having at least two segments which 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 can then later be connected to one another to form a complete plate, the plate can be manufactured with a high degree of flexibility in terms of user-defined properties.
  • At least one side of the plate preferably has at least one embossed or printed identification and / or a marker.
  • the plate can contain embossed or printed markings on one or more sides, for example text, numbers, symbols or QR code (Quick Response Code).
  • the plate can contain other markers, metal bodies, RFID (Radio-Frequency Identification) or NFC (Near-Field Communication), for better localization. This has the advantage that the origin mark and seal of approval are attached and an improved location of the device is made possible.
  • the mandrel preferably has a circular or oval cross section. This has the advantage that the mandrel can be manufactured in a cost-effective manner, for example by means of a lathe.
  • the mandrel can have at least two individual columns or columns that are braced with one another. This has the advantage that the mandrel or the device as a whole can be reinforced in an efficient manner that is gentle on the material.
  • the mandrel preferably has at least one sealing lamella.
  • the sealing lamella is designed and attached in such a way that the most effective possible closure of the opening of the cavity to be stored 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.
  • 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 drainage of open pit mines, the method according to the invention being characterized in that the cavity is used a device according to the invention is locked and no possible break in day jeopardizes public safety.
  • the immediate vicinity of the opening of the cavity to be closed is leveled.
  • the immediate vicinity 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 excavated around the opening of the cavity to be closed before the device according to the invention is used. In this case, after the device according to the invention has been inserted, the depression or pit can be filled again and, if necessary, leveled with the surface.
  • the present invention also relates to a use of the device according to the invention, the device according to the invention being used to close a cavity formed in the ground, preferably a vertical hole or shaft in the ground, particularly preferably a filter well for open pit drainage.
  • a device 10 according to a first embodiment is shown in a schematic sectional illustration.
  • 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 which is at least twice as large as 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 positively held in the middle of the plate 1 and normal to the plane of the plate on the plate 1 and is arranged in the direction of gravity.
  • the mandrel 2, or the body element 32 can be introduced through the opening 3 into the cavity 12, the mandrel 2 preferably having a length in the direction of gravity of at least 50 cm, preferably of at least 60 cm, more preferably of 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, 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 thus smaller than the diameter of the cross-section at the end D1.
  • the diameter of the cross section at the end D2 is smaller than the diameter of the cavity 12 to be stored or the opening 3 of the cavity 12 to be stored. It can also be seen that the length of the mandrel 2 covers the uppermost edge 4 of the opening 3 of the cavity to be kept 12 towers above.
  • Figure 3 illustrates a schematic representation of a further embodiment of the device 10 according to the invention.
  • the outer shape of the mandrel 2 is completely cylindrical, 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 has , or of the body element 32, on the side facing the plate, has a cross section which corresponds to the cross section at the end D2.
  • the diameter a des 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 comprises a first head part 44 and a second head part 45, which are non-positively connected to one another, for example by means of welding.
  • the first head part 44 has a thickness g which is between 15 mm and 50 mm, in particular 30 mm.
  • the second head part 45 has a thickness h which is between 15 mm and 35 mm, in particular 25 mm.
  • the first head part 44 has a diameter d which is between 320 mm and 360 mm, in particular 340 mm.
  • the second head part 45 has a diameter e which is between 250 mm and 300 mm, in particular 277.6 mm.
  • the mandrel 2 can have an additional widening 46 at the end D1, which has a diameter f which 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 welding neck 47.
  • the mandrel 2 can have a mandrel cavity. A 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 external shape of the mandrel 2 can be partially or completely cylindrical or conical.
  • the plate 1 has a central primary plate opening 5, the mandrel 2 being introduced into the central primary plate opening.
  • the mandrel 2 can be connected in one piece to the plate 1, for example by means of a casting process. Furthermore, 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 preferably 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 part of the mandrel 2 can be introduced through the central plate opening 5 and the mandrel 2 is designed such that a Falling through 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 at the end D2 has a cross section with a diameter which is 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 which is larger than that Diameter of the central primary Plate opening 5.
  • Figure 4 illustrates another embodiment of the device 10.
  • the mandrel 2 and the plate 1 are preferably designed to be connectable to one another by a bayonet catch 13 or barbs 14.
  • a longitudinal slot can be arranged on the outside of the body element 32 of the mandrel 2, at the end of which a short transverse slot adjoins at right angles (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 fixed connection.
  • 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 brought about by material properties, the thickness of the plate 1 or the internal structure of the plate 1, in order to withstand vertical forces acting on it.
  • Figure 6 shows a further embodiment of the device 10, wherein the plate 1 has elements, in particular handle elements 19, which are used for manual or machine transport or manual or machine assembly.
  • the handle elements 19 can be arranged on the plate 1 in such a way that the handle elements 19 are designed to be rotatable about an axis 20 along the surface of the plate 1. This can allow a rotation of the handle elements 19 about the axis 20 for gripping the handle element 19 and for 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 of square design, 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 have an oval shape.
  • 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 lamella 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 FIG 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 or connected to the outside of the first part 33.
  • the individual parts 32, 33 can be formed 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 FIG Figure 15 the mandrel 2 has three individual columns 35.
  • Figures 16 and 17th 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 with one another by means of a strut 36 and according to FIG Figure 17 the mandrel 2 has three columns 35 braced with one another by means of two braces 36.
  • Figures 18 and 19th 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 FIG 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 perpendicular to the base of the plate 1, wherein the at least one secondary plate opening 40 is arranged such that this is with the base of the mandrel 2 or with the base 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 which is between 800 mm and 1200 mm, in particular 1000 mm.
  • the primary central plate opening 5 has a diameter k which is between 310 mm and 360 mm, in particular 340 mm.
  • the secondary plate opening can lie at a distance j from the respective plate edge, wherein the distance j can be between 100 mm and 200 mm, in particular 150 mm amounts. Furthermore, the respective secondary plate opening 40 has a diameter I which 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)
EP20172065.3A 2019-07-02 2020-04-29 Dispositif de fermeture d'une cavité formée dans le sol Active EP3760830B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202019103633.8U DE202019103633U1 (de) 2019-07-02 2019-07-02 Vorrichtung zum Verschließen eines im Erdboden ausgebildeten Hohlraums

Publications (2)

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

Family

ID=67992020

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20172065.3A Active EP3760830B1 (fr) 2019-07-02 2020-04-29 Dispositif de fermeture d'une cavité formée dans le sol

Country Status (3)

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

Citations (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
EP0839964A2 (fr) * 1996-11-04 1998-05-06 Eijkelkamp Agrisearch Equipment B.V. Couvercle pour puits
FR2844296A1 (fr) * 2002-09-05 2004-03-12 Lefeuvre Sa Coiffe de protection pour puits ou forage
DE202010009507U1 (de) * 2010-06-22 2010-11-04 Rexholm, John Vorrichtung zum Abdichten eines havarierten Austrittsstutzens (II)
US20120017791A1 (en) * 2010-07-23 2012-01-26 Sloan Samuel T Hole Covering and Locator

Patent Citations (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
EP0839964A2 (fr) * 1996-11-04 1998-05-06 Eijkelkamp Agrisearch Equipment B.V. Couvercle pour puits
FR2844296A1 (fr) * 2002-09-05 2004-03-12 Lefeuvre Sa Coiffe de protection pour puits ou forage
DE202010009507U1 (de) * 2010-06-22 2010-11-04 Rexholm, John Vorrichtung zum Abdichten eines havarierten Austrittsstutzens (II)
US20120017791A1 (en) * 2010-07-23 2012-01-26 Sloan Samuel T Hole Covering and Locator

Also Published As

Publication number Publication date
PL3760830T3 (pl) 2024-03-04
DE202019103633U1 (de) 2019-09-03
EP3760830B1 (fr) 2023-09-13

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