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EP3260605B1 - Vorrichtung und verfahren zur abscheidung von material auf einem unterwasserboden - Google Patents

Vorrichtung und verfahren zur abscheidung von material auf einem unterwasserboden Download PDF

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Publication number
EP3260605B1
EP3260605B1 EP17169913.5A EP17169913A EP3260605B1 EP 3260605 B1 EP3260605 B1 EP 3260605B1 EP 17169913 A EP17169913 A EP 17169913A EP 3260605 B1 EP3260605 B1 EP 3260605B1
Authority
EP
European Patent Office
Prior art keywords
drag head
depositing
underwater bottom
inlet opening
side wall
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.)
Active
Application number
EP17169913.5A
Other languages
English (en)
French (fr)
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EP3260605A1 (de
Inventor
Bruno Tack
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.)
Baggerwerken Decloedt and Zoon NV
Original Assignee
Baggerwerken Decloedt and Zoon NV
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Baggerwerken Decloedt and Zoon NV filed Critical Baggerwerken Decloedt and Zoon NV
Publication of EP3260605A1 publication Critical patent/EP3260605A1/de
Application granted granted Critical
Publication of EP3260605B1 publication Critical patent/EP3260605B1/de
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Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/8833—Floating installations
    • E02F3/885—Floating installations self propelled, e.g. ship
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/8833—Floating installations
    • E02F3/8841—Floating installations wherein at least a part of the soil-shifting equipment is mounted on a ladder or boom
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/92—Digging elements, e.g. suction heads
    • E02F3/9256—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
    • E02F5/10—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables
    • E02F5/104—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables for burying conduits or cables in trenches under water
    • E02F5/108—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables for burying conduits or cables in trenches under water using suction-effect devices
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
    • E02F5/12—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with equipment for back-filling trenches or ditches
    • E02F5/125—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with equipment for back-filling trenches or ditches underwater

Definitions

  • the invention relates to a device for depositing material onto an underwater bottom while making use of a dredging vessel with drag head.
  • the invention likewise relates to a drag head and method for depositing material onto an underwater bottom.
  • the trenches can be formed by making use of a dredging device.
  • a dredging device comprises a dredging vessel configured for movement in a direction of movement, a dredge pump placed on the dredging vessel and having a connection for a throughfeed conduit which connects a drag head to the dredge pump, and support means placed between the dredging vessel and the drag head for supporting the throughfeed conduit and determining the depth of the drag head.
  • the drag head comprises a tube construction which can be connected to the throughfeed conduit and has side walls, an upper wall and a lower wall directed toward the bottom.
  • a visor Arranged at the rear (the downstream side relative to the direction of movement) of the tube construction is a visor which is provided on the bottom side of a throughflow opening and connected for pivoting around a horizontal axis to the tube construction, and can thus be rotated up and downward, for instance by a hydraulic piston.
  • the visor is further provided with a toothed beam running transversely of the direction of movement and provided on the bottom side with cutting tools such as teeth for dislodging material for dredging from the bottom.
  • a series of wear heel pieces, together forming a heel plate with which the drag head supports on the underwater bottom, can be arranged on the underside (the bottom side) of the tube construction, at the position of the connection to the visor.
  • such a drag head is dragged forward over or in the bottom for dredging in the direction of the trench to be arranged, wherein the tube construction rests via the heel plate on the bottom and wherein the teeth dislodge the bottom and the dislodged bottom material is suctioned away via the throughfeed conduit, for instance to a bin present on the dredging vessel.
  • the trench with the pipeline received therein is filled with material for depositing.
  • a spray pontoon can be used for this purpose, wherein the material for depositing is poured onto the trench via a floating conduit and pipe.
  • Another known method consists of depositing the bottom material which is present in the bin onto the trench by (partially) opening the bottom plates of the bin while the dredging vessel moves forward in the direction of the trench.
  • US 4,400,115 A discloses a device for depositing material on an underwater bottom.
  • the device comprises a fall pipe through which material is carried in the direction of the underwater bottom.
  • a lower end of the fall pipe is controlled in such a way that it is located directly above a hopper which is moving on the underwater bottom in accordance with a desired route during the dumping.
  • NL 7806155 A and GB 2004817 A also disclose devices for depositing material on an underwater bottom.
  • the material to be deposited is mixed with water and pumped to the top of a fall pipe, where after a cyclone sheds the water from the material that is then transported to the underwater bottom through the fall pipe.
  • the device of GB 2004817 A comprises a flexible fall pipe, a lower side of which is provided with a drive.
  • the fall pipe has a specific weight lower than water.
  • WO 2014/098600 A1 discloses a drag head provided with a biasing device in order to be able to exert extra force on the side of the drag head.
  • the biasing device can for instance comprise a torsion spring.
  • the depositing of the (bottom) material according to the known method is imprecise and in some cases can have an efficiency of a maximum of 50%. This means that no more than half of the bottom material comes to lie at the desired position, i.e. in the trench. In such a case the dredging vessel has to dredge additional bottom material in the vicinity, which is of course time-consuming and expensive.
  • the trench further has to be filled such that the contour of the filling substantially matches the bottom contour of the immediate vicinity. This is because a filling which is too high, wherein a rise is thus formed, is subject to erosion, whereby the filling is gradually carried away with the current. The result is that the customer will pay for something which will be lost again in the short or long run. This is of course undesirable. Because of the desired level of protection, the minimum height of the filling above the pipeline, among other things, is further set. It is thus also important herein to be able to realize the height of the filling as precisely as possible.
  • a device for this purpose.
  • the invented device for depositing material onto an underwater bottom comprises a dredging vessel which is configured for movement in a direction of movement P and a pump placed on the dredging vessel and connected via a throughfeed conduit to an inlet opening of a drag head movable over the underwater bottom, wherein the drag head is bounded in a direction running transversely of the direction of movement by a first and a second outer side wall, the inlet opening is situated closer to the first side wall than the centre between the side walls, and the outlet opening is provided in the second side wall of the drag head, wherein the pump is configured to maintain a transverse flow in the drag head from the inlet opening to the outlet opening of the drag head and to the underwater bottom, in which flow the material for depositing is entrained and is deposited, preferably via the outlet opening, onto the underwater bottom.
  • a flow is introduced on a first side of the drag head via the inlet opening into a space enclosed by the visor and the underwater bottom and is deflected in a direction running transversely of the direction of movement P (substantially corresponding to a dragging direction of the drag head) toward the second side wall, where the flow with entrained material for depositing leaves the drag head, preferably via the outlet opening, and finds its way (for instance in an arc) onto the underwater bottom or into a trench for filling.
  • Use is thus made of the width of the drag head in order to direct the supplied material for depositing and give it the desired speed.
  • the material for depositing can hereby be deposited on the underwater bottom with positional accuracy.
  • the speed of forward movement of the dredging vessel (and the drag head), the flow rate with which the material for depositing is supplied to the outlet opening and the path of the drag head can here be adjusted to each other such that the desired depositing onto the underwater bottom of the material for depositing is achieved.
  • the centre between the side walls lies in a plane of symmetry of the drag head at a substantially equal, shortest distance from the two side walls of the drag head.
  • the inlet opening which provides access to the space between visor and underwater bottom is situated somewhere between the first side wall and the plane of symmetry of the drag head.
  • a device wherein the drag head comprises a feed opening for the material for depositing which is directed toward the bottom, and the pump is configured to carry the material for depositing from the underwater bottom to the outlet opening of the drag head.
  • This embodiment is for instance readily applicable when the material for depositing is already situated on the underwater bottom, for instance as a result of a trench or channel being formed in the underwater bottom.
  • a device wherein the pump is configured to carry the material for depositing from the dredging vessel, via the throughfeed conduit and to the inlet opening of the drag head.
  • the material for depositing can for instance be supplied from a bin present on the dredging vessel.
  • the precision of the depositing is further improved by providing an embodiment of the device wherein the pump is configured to carry material for depositing via the outlet opening of the drag head to the underwater bottom with a controllable flow rate.
  • a device wherein the drag head comprises a second inlet opening situated closer to the second side wall than the centre between the side walls.
  • the drag head preferably also comprises a second outlet opening which is provided in the first side wall of the drag head.
  • the side where the material for depositing optionally leaves the drag head can in this way be changed from the second side wall to the first side wall in simple manner.
  • the material for depositing is supplied to the second inlet opening and then moved from the second side wall in the direction of the first side wall, where the material for depositing leaves the drag head.
  • the inlet opening(s) and the outlet opening(s) can be closed.
  • the water flow and/or the material for depositing is supplied via the first inlet opening and discharged via the second outlet opening, it is advantageous to be able to close the second inlet opening as well as the first outlet opening situated on the side of the first inlet opening.
  • the water flow and/or the material for depositing is supplied via the second inlet opening and is discharged via the first outlet opening, it is advantageous to be able to close the first inlet opening as well as the second outlet opening situated on the side of the second inlet opening.
  • both the first and the second inlet opening open and to guide the supplied water flow and/or the flow of material for depositing downstream of the two inlet openings, to the first or the second inlet opening, for instance by incorporating a valve in the flow duct.
  • the position of the first inlet opening can be chosen freely between the first side wall and the plane of symmetry of the two outer side walls, wherein placing the first inlet opening closer to the first side wall is preferred to an embodiment in which the first inlet opening is situated further from the first side wall.
  • the (first) inlet opening is situated adjacently of the first side wall. This is understood to mean that the distance from a central point of the inlet opening to the first side wall is smaller than 50% of the distance between the first side wall and the plane of symmetry of the drag head in relation to the two side walls, preferably smaller than 25% and most preferably smaller than 10%.
  • the second inlet opening is situated adjacently of the second side wall.
  • the distance from a central point of the inlet opening to the second side wall is smaller than 50% of the distance between the second side wall and the plane of symmetry of the drag head in relation to the two side walls, preferably smaller than 25% and most preferably smaller than 10%.
  • a drag head which is configured to be moved forward over an underwater bottom and to deposit material thereon, comprising an inlet opening for receiving a liquid and/or material for depositing and an outlet opening for carrying the material for depositing to the underwater bottom, wherein the drag head is bounded in a direction running transversely of the direction of movement by a first and a second outer side wall, wherein the inlet opening is situated closer to the first side wall than the centre between the side walls, and wherein the outlet opening is provided in the second side wall of the drag head.
  • the drag head is preferably also configured to move forward over the underwater bottom and herein dislodge bottom material which is suctioned away via the throughflow opening of the drag head and the throughfeed conduit to a bin present on the dredging vessel by a pump present on the dredging vessel.
  • the invention also relates to a method for depositing material onto an underwater bottom, wherein a device according to the invention is provided, wherein the drag head is moved forward over the underwater bottom by the forward movement of the dredging vessel in the direction of movement P, wherein the pump maintains a transverse flow in the drag head from the inlet opening of the drag head to the outlet opening of the drag head and to the underwater bottom, and wherein the material for depositing is introduced into the flow, whereby it is entrained in the flow and is deposited, preferably via the outlet opening, onto the underwater bottom.
  • An embodiment of the above stated method is characterized in that the pump carries material for depositing from the dredging vessel, via the throughfeed conduit and to the inlet opening of the drag head.
  • Another embodiment of the method has the feature that the drag head comprises a feed opening for the material for depositing which is directed toward the bottom, and the pump carries material for depositing from the underwater bottom to the outlet opening of the drag head.
  • the pump carries material for depositing via the outlet opening of the drag head to the underwater bottom with a controllable flow rate. This further enhances the precision of the depositing.
  • a further embodiment of the invention is provided by a method wherein, prior to the material for depositing being carried to the underwater bottom, the drag head is moved forward over the underwater bottom and, with this, dislodges bottom material, which is suctioned away via the drag head and the throughfeed conduit to a bin present on the dredging vessel by the pump present on the dredging vessel. It is advantageous here for the suctioned-up bottom material to be used as material for depositing.
  • Figure 1 shows a dredging vessel 8 which is provided with a motor (not shown in the drawing) for driving a propeller 2 via a propeller shaft for the purpose of propelling dredging vessel 8. Also present are devices (not shown in the drawings) for steering dredging vessel 8, such as a rudder and transversely placed propellers for facilitating manoeuvring.
  • a schematically shown pump 6 is arranged in dredging vessel 8.
  • a throughfeed conduit 3 Arranged against a side wall of the dredging vessel is a throughfeed conduit 3, one end of which is connected to pump 6.
  • throughfeed conduit 3 comprises two members 3a and 3b which are connected to each other by means of a coupling allowing some relative angular displacement.
  • the connection between upper member 3a of throughfeed conduit 3 and the vessel also allows angular displacement, both in the horizontal and in the vertical plane.
  • this member is connected to a cable 4a, the other end of which is connected to a winch 5a.
  • a drag head 1 is arranged on the free end of second member 3b of throughfeed conduit 3.
  • Drag head 1 comprises a connecting part which can be connected to throughfeed conduit 3 and which comprises in the shown embodiment a fixed connecting part 13a and a movable connecting part 13b connected to fixed connecting part 13a for pivoting around a vertical shaft 14 by means of hydraulic cylinder 31.
  • Fixed connecting part 13a can be fixedly attached to throughfeed conduit 3 with flange 11.
  • Drag head 1 further comprises a visor 12 which is rotatable by means of hydraulic cylinder 21 relative to connecting part 13b around a shaft 15 running transversely of the dragging direction P and has an opening 16 directed toward the bottom for receiving dislodged bottom material.
  • a lower edge of visor 12 comprises a series of cutting tools 17 for penetrating the bottom.
  • Cutting tools 17 are per se known and can comprise any type of tooth. It is also possible to provide a cutting blade (not shown) instead of the series of cutting tools.
  • the series of cutting tools can also be omitted.
  • the series of cutting tools 17 extends along a line transversely of the dragging direction P.
  • the cutting tools can for instance be mounted in usual manner on a toothed beam running transversely of the dragging direction P.
  • drag head 1 is moved over the bottom in the direction of movement P of the dredging vessel, wherein teeth 17 penetrate the bottom to a determined depth and, with this, dislodge bottom material.
  • the dislodged bottom material can be pumped up together with a quantity of water via throughflow opening 16 by pump 6, wherein throughfeed conduit 3 functions as suction conduit for the dredged bottom material. Owing to the pumping action of pump 6 an underpressure is thus maintained in visor 1 during dredging.
  • the pumped-up bottom material can for instance be collected in a bin 7 of dredging vessel 8.
  • Pump 6 is then switched from the suction mode to a blowing mode, wherein bottom material coming from for instance bin 7 is pumped via throughfeed conduit 3 in the direction of bottom 9 and is deposited onto underwater bottom 9.
  • Throughfeed conduit 3 then functions as blow conduit for the bottom material.
  • a drag head 1 according to the invention is bounded in a direction running transversely of the direction of movement P by a first outer side wall 18a and an opposite second outer side wall 18b.
  • a closed front wall 19 of drag head 1 (on an upstream side of throughflow opening 16) is provided with an inlet opening 19a which is situated closer to first side wall 18a than the centre between the side walls (18a, 18b), and in the shown embodiment immediately adjacently of first side wall 18a.
  • Pump 6 is configured to maintain a flow through throughfeed conduit 3 to inlet opening 19a, for instance a water flow, wherein the flow thus enters drag head 1 via inlet opening 19a.
  • the required precision of the depositing is achieved inter alia by providing second side wall 18b with an outlet opening 20b which is directed toward the part of underwater bottom 9 on which the material for depositing is to be arranged.
  • the flow entering via inlet opening 19a is then guided as according to arrow 28ab from the (closed) first side wall 18a to outlet opening 20b in a direction running transversely of the dragging direction P, wherein material for depositing 30 is drawn in by the flow via a feed opening of the drag head directed toward the bottom, is entrained by the flow and leaves drag head 1 in lateral direction.
  • drag head 1 is moved forward over underwater bottom 9 by the forward movement of the dredging vessel in the direction of movement P, wherein pump 6 carries material for depositing 30 to inlet opening 19a of drag head 1 and blows it via outlet opening 20b laterally in the direction of underwater bottom 9 or trench 90.
  • the material for depositing 30 can here be carried with pump 6 from dredging vessel 8, via throughfeed conduit 3 and to inlet opening 19a of drag head 1. It is however also possible to carry accumulated material for depositing 30a, which is already present on underwater bottom 9, for instance adjacently of a trench 90, from underwater bottom 9 directly to outlet opening 20b of drag head 1 with pump 6.
  • the material for depositing 30 is poured onto underwater bottom 9 in the desired pattern, for instance to fill trench 90 with deposited material for depositing 30b.
  • the transverse pouring direction 28ab can be reversed by the embodiment shown in figures 3A and 3B , in which the second side wall 18b is closed and an outlet opening 20a is arranged in first wall part 18a.
  • An inlet opening 19b for material for depositing 30 which is arranged in front wall 19 is situated immediately adjacently of second side wall 18b.
  • drag head 1 can if desired be provided with both a first inlet opening 19a and a second inlet opening 19b, wherein these can be closed with closing plates (22a, 22b).
  • An inlet opening 19a is created by removing closing plate 22a, wherein it is preferred for proper operation to close inlet opening 19b with closing plate 22b.
  • outlet openings (20a, 20b) can also take a closable form with closing plates (24a, 24b).
  • outlet opening 20b is situated in the second side wall, thus where closing plate 24b was removed.
  • First side wall 18 is however closed, which can be achieved in simple manner by closing outlet opening 20a with closing plate 24a.
  • a flow of material for depositing in a transverse direction as according to arrow 28ba, which is opposite to arrow 28ab, can be achieved by closing second outlet opening 20b and first inlet opening 19a with closing plates 24b and 22a and removing closing plates 24a and 22b, thereby forming a first outlet opening 20a and a second inlet opening 19b.
  • the speed at which drag head 1 is dragged over underwater bottom 9 can be chosen within wide limits. It is however advantageous for the speed of forward movement of drag head 1 to be adjusted to the flow rate of the outgoing flow of material for depositing 30.
  • Pump 6 is configured for this purpose to carry the material for depositing 30 to one of the inlet openings (19a, 19b) of drag head 1 and to carry it via one of the corresponding outlet openings (20b, 20a) of drag head 1 to underwater bottom 9 with a controllable flow rate.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Underground Or Underwater Handling Of Building Materials (AREA)

Claims (17)

  1. Einheit zum Ablagern von Material auf einem Unterwasserboden (9), die aufweist:
    - ein Baggerschiff (8), das so konfiguriert ist, dass es sich in eine Bewegungsrichtung P bewegt,
    - eine Pumpe (6), die sich auf dem Baggerschiff (8) befindet und über eine Durchlassleitung (3) mit einer Einlassöffnung (19a) eines Baggerkopfes (1) verbunden ist, der über den Unterwasserboden (9) bewegbar ist, dadurch gekennzeichnet, dass der Baggerkopf (1) in einer Querrichtung zur Bewegungsrichtung von einer ersten (18a) und einer zweiten (18b) seitlichen Außenwand begrenzt wird, wobei sich die Einlassöffnung (19a) näher an der ersten Seitenwand (18a) als in der Mitte zwischen den Seitenwänden (18a, 18b) befindet und die Auslassöffnung (20b) in der zweiten Seitenwand (18b) des Baggerkopfes (1) bereitgestellt wird,
    - wobei die Pumpe (6) so konfiguriert ist, dass sie einen Querfluss im Baggerkopf (1) von der Einlassöffnung (19a) zur Auslassöffnung (20b) des Baggerkopfes (1) und zum Unterwasserboden (9) aufrechterhält, wobei das Material zum Ablagern in diesem Fluss mitgenommen und auf dem Unterwasserboden (9) abgelagert wird.
  2. Einheit nach Anspruch 1, wobei das Material zum Ablagern über die Ausgangsöffnung (20b) auf dem Unterwasserboden (9) abgelagert wird.
  3. Einheit nach Anspruch 1 oder 2, wobei der Baggerkopf (1) eine Zufuhröffnung für das Material zum Ablagern aufweist, die nach unten zum Boden gerichtet ist, und wobei die Pumpe (6) so konfiguriert ist, dass sie das Material zum Ablagern vom Unterwasserboden (9) zur Auslassöffnung (20b) des Baggerkopfes (1) befördert.
  4. Einheit nach einem der Ansprüche 1 bis 3, wobei die Pumpe (6) so konfiguriert ist, dass sie Material zum Ablagern vom Baggerschiff (8) über die Durchlassleitung (3) zur Einlassöffnung (19a) des Baggerkopfes (1) befördert.
  5. Einheit nach einem der vorherigen Ansprüche, wobei die Pumpe (6) so konfiguriert ist, dass sie das Material zum Ablagern mit einer regelbaren Durchflussmenge über die Auslassöffnung (20b) des Baggerkopfes (1) zum Unterwasserboden (9) befördert.
  6. Einheit nach einem der vorherigen Ansprüche, wobei der Baggerkopf (1) eine zweite Einlassöffnung (19b) aufweist, die sich näher an der zweiten Seitenwand (18b) als in der Mitte zwischen den Seitenwänden (18a, 18b) befindet.
  7. Einheit nach einem der vorherigen Ansprüche, wobei der Baggerkopf (1) eine zweite Auslassöffnung (20a) aufweist, die in der ersten Seitenwand (18a) des Baggerkopfes (1) bereitgestellt wird.
  8. Einheit nach einem der vorherigen Ansprüche, wobei mindestens eine der Einlassöffnungen (19a, 19b) und der Auslassöffnungen (20a, 20b) geschlossen werden kann.
  9. Einheit nach einem der vorherigen Ansprüche, wobei sich die Einlassöffnung (19a) neben der ersten Seitenwand (18a) befindet.
  10. Einheit nach einem der vorherigen Ansprüche, wobei sich die zweite Einlassöffnung (19b) neben der zweiten Seitenwand (18b) befindet.
  11. Baggerkopf (1), der so konfiguriert ist, dass er über einen Unterwasserboden (9) vorwärts bewegt wird und Material darauf ablagert, wobei der Baggerkopf eine Einlassöffnung (19a) aufweist, um eine Flüssigkeit und/oder Material zum Ablagern aufzunehmen, sowie eine Auslassöffnung (20b), um einen Flüssigkeitsfluss und/oder das Material zum Ablagern zum Unterwasserboden (9) zu befördern, dadurch gekennzeichnet, dass der Baggerkopf (1) in einer Querrichtung zur Bewegungsrichtung von einer ersten (18a) und einer zweiten (18b) äußeren Seitenwand begrenzt wird, wobei sich die Einlassöffnung (19a) näher an der ersten Seitenwand (18a) als in der Mitte zwischen den Seitenwänden (18a, 18b) befindet und wobei die Auslassöffnung (20b) in der zweiten Seitenwand (18b) des Baggerkopfes (1) bereitgestellt wird.
  12. Verfahren zum Ablagern von Material auf einem Unterwasserboden (9), wobei eine Einheit nach einem der Ansprüche 1 bis 10 bereitgestellt wird, wobei der Baggerkopf (1) durch die Vorwärtsbewegung des Baggerschiffes (8) in Bewegungsrichtung P vorwärts über den Unterwasserboden (9) bewegt wird, dadurch gekennzeichnet, dass die Pumpe (6) einen Querfluss im Baggerkopf (1) von der Einlassöffnung (19a) des Baggerkopfes (1) zur Auslassöffnung (20b) des Baggerkopfes (1) und zum Unterwasserboden (9) aufrechterhält, und wobei das Material zum Ablagern in den Fluss eingeleitet wird, wobei es im Fluss mitgeführt und optional über die Auslassöffnung (20b) auf dem Unterwasserboden (9) abgelagert wird.
  13. Verfahren nach Anspruch 12, wobei der Baggerkopf (1) eine Zufuhröffnung für das Material zum Ablagern aufweist, die nach unten zum Boden gerichtet ist, und wobei die Pumpe (6) das Material zum Ablagern vom Unterwasserboden (9) zur Auslassöffnung (20b) des Baggerkopfes (1) befördert.
  14. Verfahren nach Anspruch 12 oder 13, wobei die Pumpe (6) das Material zum Ablagern vom Baggerschiff (8) über die Durchlassleitung (3) zur Einlassöffnung (19a) des Baggerkopfes (1) befördert.
  15. Verfahren nach einem der Ansprüche 12 bis 14, wobei die Pumpe (6) Material zum Ablagern in einer regelbaren Durchflussmenge über die Auslassöffnung (20b) des Baggerkopfes (1) zum Unterwasserboden (9) befördert.
  16. Verfahren nach einem der Ansprüche 12 bis 15, wobei, bevor das Material zum Ablagern zum Unterwasserboden (9) befördert wird, der Baggerkopf (1) vorwärts über den Unterwasserboden (9) bewegt wird und damit Bodenmaterial gelöst wird, das über die Zufuhröffnung des Baggerkopfes (1) und die Durchlassleitung (3) durch die auf dem Baggerschiff (8) befindliche Pumpe (6) in einen Behälter abgesaugt wird, der sich auf dem Baggerschiff (8) befindet.
  17. Verfahren nach Anspruch 16, wobei das aufgesaugte Bodenmaterial als Material zum Ablagern verwendet wird.
EP17169913.5A 2016-06-20 2017-05-08 Vorrichtung und verfahren zur abscheidung von material auf einem unterwasserboden Active EP3260605B1 (de)

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BE2016/5452A BE1023822B1 (nl) 2016-06-20 2016-06-20 Inrichting en werkwijze voor het afzetten van materiaal op een onderwaterbodem

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
EP3737798A4 (de) * 2018-01-12 2021-10-27 Cashman Dredging & Marine Contracting Co., Llc Karussellgelenkbagger und kahn

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CN117144999B (zh) * 2023-09-20 2025-10-31 中交上海航道局有限公司 一种吹填砂用的均匀摊铺散喷头
CN120401592A (zh) * 2025-04-29 2025-08-01 中交广州航道局有限公司 一种基于挖泥船的管沟回填方法及系统

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NO139647C (no) * 1977-06-06 1979-04-18 Akers Mek Verksted As Fremgangsmaate og anordning for gjenfylling av en groeft
NO140775C (no) * 1977-09-30 1979-11-07 Stolt Nielsens Rederi Anordning for nedfoering av masse fra et overflatefartoey til et sted paa havbunnen
US4400115A (en) * 1978-12-20 1983-08-23 Commissariat A L'energie Atomique Method for depositing material on the ocean bed and apparatus for performing the same
NL2010029C2 (en) * 2012-12-20 2014-06-23 Ihc Holland Ie Bv Dredging arrangement comprising a biasing device.

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Publication number Priority date Publication date Assignee Title
EP3737798A4 (de) * 2018-01-12 2021-10-27 Cashman Dredging & Marine Contracting Co., Llc Karussellgelenkbagger und kahn

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BE1023822B1 (nl) 2017-08-02
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