DK167498B1 - PROCEDURE FOR THE FORMATION AND DELIVERY OF A CHARGE AT A SELECTED PLACE, AS CONTAINER FOR EXERCISING THE PROCEDURE - Google Patents

Description

DK 167498 B1

The invention relates to a method of forming and delivering at a selected location under water a charge consisting of substantially dissolved or slightly coherent material such as sand or other ground material, e.g. for use as the core or foundation of a dam, a quay, a reinforcement, a pier or a breakwater, for filling holes or troughs at the bottom of a sail, or for packaging and storing contaminated material by which a method is provided. a tank which can float, and in the tank a foil or tablecloth is placed on which the loose or slightly coherent material is poured onto the foil or tablecloth until the tank is filled to a certain desired depth, after which the pouring is stopped.

A method of this type is known in various embodiments.

NL-A-7 007 666 relates to a slope protection device consisting of a substance on which a crash material is applied.

The lower fabric is provided with folds which serve as partitions for sectional division of the bulk material in combination with an upper fabric.

NL-A-7 510 447 relates to a method for depositing crash material underwater. Here, a fabric is used, upon which the material is dumped, after which the fabric, together with the material thereon, is brought over the desired location and the one side of the fabric is lowered so that the material can be dumped beyond the lowered edge.

The invention has for its object to practice a method of this type in such a way that it can be carried out very cheaply and quickly while ensuring an extremely good durability of the shaped charge both in the short and longer term.

This object is achieved according to the invention by means of a method of the type mentioned initially, which is very judicious by selecting a foil or tablecloth having projecting portions relative to the tank, the projecting portions of the tablecloth or foil after the pouring has stopped is connected to each other, e.g. by sewing so as to form a substantially sealed bag which encloses the charge material, that the tank is then placed over the selected site and that the bag filled with the charge material is then removed from the tank and delivered to the selected location.

A particularly simple method of this type is peculiar in that a tank is provided in which the base member can be moved between two outer positions, namely a closed and an open position.

In order to ensure that the risk of damage, such as in the form of tearing due to impact of a filled bag, as far as possible is prevented, according to the invention, the bag filled with poured material can be gradually lowered to the chosen location.

This can be done, for example. is achieved by a method which exhibits the particular feature that, after it has been placed above the desired location, the tank can be lowered to or to a small height above that location, after which the base portion is brought from its closed position to its open position, whereby the bag filled with the poured material is delivered to the chosen location.

As another option, according to the invention, after the tank has been placed above the desired location, the tank may be lowered to or to a small height above that location and then tilted so that the bag filled with poured material is delivered to the the desired place.

In the latter two embodiments, a tank is used which, under the control of hoisting means, can be brought down to or approximately down to the desired location. When the desired location is reached, delivery of the filled bag takes place at the desired location either by opening the base part or by tilting the tank.

Another embodiment of the invention is characterized in that at least one bendable, tensile, load bearing member is attached to the tank, which is connected to a supply roller which can be wound with a braking force, after which a tablecloth or a foil over the supporting part of the tank with the base part closed, the base part after the tank having been brought to a position above the chosen place, is brought from its closed position to its open position, so that the bag filled with the loading material is brought to rest on top of the supporting part, whereby the supporting part is allowed to yield by reducing the braking force, thereby allowing the filled bag to move downwards and removing the supporting part when the chosen location is reached, e.g. upon release.

In this case, the entire tank is not moved down to the chosen location and then the bag to be precipitated in the desired location. By contrast, the tank is opened over the chosen location and the charge is allowed to gradually decrease. The flexible, tensile strength-bearing portion can be formed by a large number of tensile straps which are connected to the tank on one side and are coupled to a spindle on the other side. . On the one hand, the game may serve to unwind the strong tensile force portion, while on the other hand, brake devices may be present to achieve the controlled immersion of the plate. The end distant from the spindle shaft of the tensile impact member may be removably connected to this other side of the tank, e.g. using hooks or similar objects.

30 The tank may form part of a seagoing vessel. This vessel may comprise a tank portion comprising two sloping, pivotally mounted planar walls which may cooperate in the closed state in the same manner as a bunker, and which may be rotated from this closed position to an open position. The bag or bag, DK 167498 Bl 4 which is pre-filled with loose material, such as e.g. may be exhumed from the bottom of the relevant sailing course, and then closed, dumped upon opening the base. The charge material may also consist of contaminated sand or sludge. Using the method of the invention, such material can be stored in basins or the like. Thus, a sectional breakdown of the contaminated material may occur, which, in the case of certain materials, may provide a solution to the environmental problems.

10 In order to ensure the easiest possible dumping of a filled and closed bag by opening the base of the tank, a slide mat may advantageously be placed first on the base of the tank. This mat thus lies on the base of the tank and under the tablecloth or foil.

Conveniently, a method according to which a prefabricated container made of tablecloth or foil can be used, the shape of which is adapted to the shape of the tank in the closed condition.

Preferably, a foil or tablecloth is selected whose permeability matches the loose or slightly coherent material to be incorporated herein. In cases where the filled or sealed bag is desired to be dumped in water, a material having a desired permeability to water may be selected. In this connection, a woven cloth consisting of e.g. polyethylene monofilament warp threads and shot threads consisting of a multifilament or ribbon yarn. As another option, polypropylene multifilaments can be used for both weft threads and warp threads.

The invention further relates to a prefabricated container of the type described in claim 10 for use in the practice of the methods. Such a container may have a shape adapted to the shape of the tank in which it is to be emptied, in its closed state.

DK 167498 B1 5

A preferred embodiment of such a prefabricated container is characterized in that it comprises at least a portion of increased permeability, especially for the passage of air. Such a part with increased permeability can be considered as a window or valve, in particular facilitating the compression of trapped air. This can be important for the stable placement of a dumped container underwater.

In the situation where the force by which the container falls on the seabed is so large that the container can break, a variant can be used which is provided with at least one expansion fold which can be partially broken under the influence of transverse tensile forces. Such a fold initially accepts the forces affecting the tablecloth or foil which are due to deformation of the container under the high impact forces which occur in connection with the relatively heavy filling material. By partially breaking the fold, an extra margin is obtained in the dew length, increasing the effective size of the container and reducing the forces to less damaging sizes. Such an expansion fold can therefore be regarded as a safety measure.

As mentioned, the projecting portions of a filled container can be connected to each other, e.g. using sewing. Preferably, however, the container itself is already provided with connecting means for such joining of the edges of the projecting portions of the filled container that the container is thereby closed. Eg. For example, the connecting means may comprise at least one zip fastener. In a simpler embodiment, the connecting means may take the form of rows of holes found in oppositely positioned edges intended for stringing these 30 edges by means of a rope.

In the case where a water-permeable tablecloth or foil is used, any accumulated air present in the bag may be eliminated via air valves. For this purpose, an additional water 6 UK 1b / 4yb bl layer may be drawn over the bag in the tank in order to expel excess air under the influence of force. The extra water used flows away during the dumping of the bag.

The invention also relates to a tank which is prepared and clearly arranged for use in connection with the method according to the invention as described above.

Such a tank can e.g. be peculiar in that it comprises a base member which is movable between two outer positions, namely a closed and an open position.

The invention also extends to a frame or rack for carrying a tank of the above type. This tripod may be peculiar to means for the support and controlled immersion of a filled bag which may be present in the tank.

Such a stand may optionally be formed liquid.

The invention will be described in more detail below with reference to the drawing, in which 1 shows a perspective view of a seagoing vessel with a tank which can be opened and closed, and a tablecloth which can be placed therein; FIG. 2 shows the vessel of FIG. 1 with the tank filled with charge material; FIG. 3 shows the vessel of FIG. 2 with the tablecloth closed to form a bag; FIG. 4 is a transverse section through the embodiment of FIG. 1-3 showing the manner in which the bag is sewn together; FIG. 5 is a view similar to FIG. 4, but it appears that the base on which the base part is opened in order to settle the bag filled with charge material, fig. 6 is a schematic perspective view of a prefabricated container with a zip fastener; FIG. Figures 7a and 7b complementarily draw containers with different variations of expansion folds; 8 is a perspective view of the embodiment of FIG. 7a shows detail VIII with parts cut away; FIG. 9 shows a constriction for closing a container; FIG. 10 is a perspective view of a simpler embodiment of a prefabricated container; FIG. 11 is a section through a plane expansion fold; FIG. 12 is a seagoing vessel with a submersible split tank; FIG. 13 is a seagoing vessel with a submersible tank, and FIG. 14 a seagoing vessel in the form of a split tank of spill means for lowering a filled bag.

The FIG. 1, the seagoing vessel 1 comprises two floating oblong portions 2, 3 which are pivotally mounted relative to each other. The internal walls of these 2, 3, shown by reference numerals 4, 5, together form a V-shaped cross-section, as is clearly seen in FIG. 4. In the embodiment shown in FIG. 1-4, the walls 4, 5 form a closed tank.

This is the one extreme position. In the second outer position, the walls 4, 5 have been moved away from each other, as shown 25 in FIG. 5. This situation will be described in more detail below.

DK 167498 di 8

The floating parts 2, 3 are pivotally connected to each other by hinges 6,7. Means for opening and closing the tank bounded by walls 4, 5 are not shown. These may be of a generally known type and are especially hydraulic means.

5 As shown schematically in FIG. 1, a tablecloth or foil 9 may be placed within the tank 8 defined by the walls 4, 5. This tablecloth or foil 9 is shown in FIG. 1 is extremely schematic. In this embodiment, the tablecloth 9 is already formed as a prefabricated container, the shape of which fits the shape of the tank 8, by means of 10 stitched seams 10. A relatively short flap 11 protrudes from three sides of the tablecloth while a large flap 12 extends from the fourth side of the tablecloth.

The manner in which the tablecloth 9 is placed within the tank is clearly evident. This is indicated by an arrow 13. In the embodiment of FIG.

15 2, the tablecloth 9 has been placed in the tank 8 and filled with charge material. The way this is done is not depicted. For this purpose, e.g. sand or other bottom material is excavated from the sail, after which it is poured into the tank 8 on top of the tablecloth 9.

After reaching the desired filling depth, the flap 12 is folded over the tank as shown by the arrow 14 and here it is adjusted over the small flaps 11.

FIG. 3 shows that the overlapping areas, all of which are indicated by the reference numeral 15, are sewn together so that 25 forms a robust filled bag 16.

FIG. 4 shows, for clarity, that of FIG. 3 in cross-section. It is clear that the loading material 17 fills the entire bag 16. A schematically shown sewing machine 18 shows how the large flap 12 is sewn together with the small flaps 11. To facilitate this operation, the sewing machine can be attached to the edge of the tank.

When the work with the sewing machine 18 has been completed, the filled bag 16 is ready to be delivered to the desired location. For this purpose, the vessel 1 may be brought to a position above the desired location (which may occur simultaneously with the sighting 5) and after this position is reached, the pivotal parts 2, 3 may be moved away from each other in the position shown in FIG. 5 by means of the hydraulic means not shown, thereby forming a hopper which is open at the bottom and through which the filled bag can pass out and settle on the bottom of the sailing course.

FIG. 6 is a perspective view of a preferred embodiment of a container 19, the shape of which is similar to that of FIG. 1 is suitable for the shape of a tank to be used. At the top and at one side of the container 19, a narrow longitudinal flap 20 extends, while on the other side is a wide longitudinal flap 21. The wide longitudinal flap 21 can be connected by means of zipper members 22, 23, 24 with the narrow longitudinal flap and the two short sides of the container 19.

FIG. 7a and 7b show respectively a container 25 and 26, the general shape of which corresponds to that of FIG. 6, container 19. The container 25 according to FIG. 7a is also provided with expansion folds, shown by reference numeral 27, which will be described in greater detail with reference to FIG. 8. The container 25 25 of FIG. 7a is provided with expansion folds at its end faces and an expansion fold 27 extending in the longitudinal direction of the container 25 across an upper surface. The container 26 of FIG. 7b has an expansion fold 27 extending in the transverse direction on the upper surface of the container 26.

As described above, the expansion folds serve to absorb forces that may occur when a delivered container falls to the bottom under the impact of a shock. Without further explanation, it is understood that the substance of the container can thereby become 10

Wolf ΙΟ / * Ι · »Β D I

ve been subjected to a very large drag.

FIG. 8 shows by arrows 28 the direction of these pulling forces. The expansion fold 27, which consists of two tablecloths 29 projecting from the main surface of the tablecloth and is superimposed on top of each other, is screened in two places, as indicated by reference numerals 42 and 43. By the influence of tensile forces 28 first, the seam 42 will be loaded. If the forces are so large that these seams go up, an extra margin or extra length appears in the cloth of the container 25 in the direction of the pulling force 28, so that the forces are reduced. If this is not sufficient, the second sewing stitch 43 may also still be broken. Practice shows that using this dual security measure no longer poses any danger that a delivered container will fail.

FIG. 9 shows a constricted connection 30. In opposite edges 31, 32 there are rows of holes 33 for joining these edges by rope 34. To ensure a satisfactory seal at the location where the constricted connection 30 is located , a flap 35 20 extends from the edge 31 below the holes 33. This flap 35 is first laid on top of the charge material, after which the edge 32 is placed on top. Finally, the ropes 34 are placed to fix the edges 31 and 32 relative to one another.

FIG. 10 shows a simpler container 36. It shows a less elegant fit of the mold to a tank as compared to the containers described above. The container 36 of FIG. 10, however, has the advantage that it can be manufactured cheaper and yet has a high quality. Unlike the previously described containers, the container 36 does not have any more 30 or less triangular end faces for optimal adaptation to the shape of a tank. It is provided with a more or less slot-like aperture 37 through which the material can be poured into the container 36. At the location of this slot 37, the previously described connecting means may be present in the form of a zipper fastener or rows. of holes for closing the container 36.

In this embodiment, air valves 38 are also shown. These air valves 38 consist of holes covered by a relatively coarse woven material 39. The sizes, positions and number of these air valves 38 can be selected as desired. In addition, it should be noted that the previously described containers can also be equipped with similar air valves.

Finally, FIG. 11 is an expansion fold 40. In contrast to the expansion fold 27 shown in FIG. 8, the expansion fold 40 has a planar shape, making it smaller. Three layers of the container material in question are superposed on one another and connected to each other by two stitched seams 40, 41, thereby obtaining a margin in the length of the container fabric and at least significantly reducing the risk of destruction.

FIG. 12 shows a seagoing vessel 51 which is in the form of a floating body or rack with spill means 52. These spill means 52 carry a stand 53 with base portions 54 and 55. The stand 53 comprises two portions 56, 57 which are pivotally mounted relative to 20 each other and carries the respective base portions 54 and 55 which can be moved towards each other and away from each other by cylinders 58. The cylinders 58 are connected via hoses 59 to power and control means not shown.

Using the vessel 51, the practice of the invention is carried out in the following manner. First, the tablecloth 9 is placed on the base portions 54, 55 of the frame 3 in the situation in which the frame 53 is located within the vessel 51. Then, the charge material is poured onto the tablecloth 9 and when the desired filling depth is reached, the filled bag is made completely ready in accordance with FIG.

30 1-4. After this is done, the vessel 51 is sailed to the desired position and the stand 53 is lowered by appropriate drive of the game means 52 down on top of the bottom of the sail at the desired position. By activating the cylinders 58, the base parts 54, 55 are moved away from each other, whereby the bag 16 is delivered to the desired location.

FIG. 13 shows a variant of the embodiment shown in FIG. 12. A vessel 60 is of substantially the same shape as that of FIG.

512, however, in addition to game means 52, vessel 60 also has game means 61 located on one side which extend substantially centrally upwardly over a tilting tank 62. After the placement of a tablecloth and filling of a container with charge material in the same manner as described with reference to FIG. 12, the rocker tank 62 is brought to the desired location by the spill means 61. Upon activation of the spill means 52, the tank 62 is tilted, thereby placing the container (not shown in Figure 13) in place or the desired location.

Finally, FIG. 14 is a vessel 63 which is roughly of the same construction as that of FIG. 1, 2, 3, 4 and 5, however, the vessel 63 is also equipped with gaming means 64 which comprise a game shaft 66 driven by a motor 65 via a reduction gearbox. Along with this spindle shaft, strong, flexible straps 67 cooperate with respect to tensile force, which 20 is removably coupled to the vessel 63 at the other end. The interconnecting means are indicated by reference numeral 68.

Before the tablecloth 9 is placed in the tank 8, the strips 67 are placed therein. Then the blend material is poured on top of the tablecloth 9, after which the parts 2, 3, after the vessel 63 has arrived at the chosen location, are moved away from each other. Hereby, the filled bag 16 slides on top of the belts 67. Next, the game means 64 are activated by starting a motor 65, whereby a slow lowering of the container 16. takes place, after the container 16 has reached the bottom of the sail, the belts 17 are released by activating the the coupling means, whereby they can be wound up to the play shaft 66 by a corresponding activation of play means 64. After the closure of the tank 8, the respective ends of the belts 67 can be reconnected with the coupling means 68, after which the cycle can be restored

Claims (13)

10 Patent Claims A method of forming and delivering at a selected location underwater a charge consisting of substantially dissolved or slightly coherent material (17), such as sand or another ground material, e.g. for use as the core or foundation of a dam, a quay, a ramp, a pier or a breakwater, for filling holes or grooves in the bottom of a sail, or for packaging or storing contaminated material by which method is provided. a floatable tank (8), and a foil or tablecloth (9) is placed in the tank (8) and the loose or slightly coherent material (17) is poured onto the foil or tablecloth (9) until the tank ( 8) is filled to a certain desired depth, after which the pouring is stopped, characterized in that a foil or tablecloth (9) is selected which has projecting parts (11, 12, 15) relative to the tank (8), that the projecting portions of the tablecloth or foil (9), after the pouring is stopped, are connected to each other, e.g. by sewing so as to form a substantially closed bag (16) which encloses the charge material (17), that the tank is then placed over the selected location and that the bag (16) filled with the charge material (17) is placed thereon removed from the tank (8) and delivered to the selected location. 14 LUV i D / * + yo D I Method according to claim 1, characterized in that a tank (8) is provided, the base part (2, 3) being movable between two outer positions, namely a closed and an open position. Method according to claim 1 or 2, characterized in that the bag filled with charge material (17) is gradually lowered to the desired location. Method according to claims 2 and 3, characterized in that the tank (8), after being placed above the desired location, is lowered to or to a small height above that location, and that the base part (2, 3) is brought from its closed position to its open position, whereby the bag (16) filled with the mixing material (17) is delivered to the desired location. Method according to claim 3, characterized in that the tank (8), after being placed over the desired location, is lowered to or to a small height above that location and then caused to tilt so that it is loaded with charge. The material (17) filled bag (16) is delivered to the chosen location. Method according to claims 1 and 3, characterized in that at least one bendable, load-bearing, supporting part (67) is attached to the tank, which is connected to a supply roller (66) which can be wound with a braking force, then placing a foil or tablecloth (9) over the carrier portion (67) in the tank with the base portion closed, the base portion, having been brought to a position above the selected location, from its closed to its base. open position so that the bag filled with the loading material (17) is brought to rest on top of the carrier part (67), whereby the carrier part is allowed to yield by reduction, thereby allowing the filled bag to move downwards and the carrier part is removed. .g. upon release after the chosen site is reached. Method according to one or more of claims 1-6, characterized in that a sliding mat (2, 3) is first laid on top of the base of the tank. Process according to one of Claims 1 to 7, characterized in that when the tank is in its closed state, a prefabricated container made of tablecloth or foil is placed and the shape of which corresponds to the shape of the tank. Method according to one of claims 1-8, characterized in that a tablecloth or foil is selected, the permeability of which is adapted to the loose or slightly coherent material to be incorporated therein. Prefabricated container made of tablecloth or foil and for use in the practice of any one of claims 1-9, characterized in that the container is of the same shape as the tank in which it is to be placed and has projecting parts (11, 12, 15, 21, 22) to form one substantially closed bag (16) and that joining means are provided to join the edges of the projecting portions of the filled container so that it is closed. 20 li. Container according to claim 10, characterized in that it comprises at least a part (38, 39) with increased permeability, especially for passage of air. Container according to claim 10 or 11, characterized in that it comprises at least one expansion fold (27, 25 40) which is partly breakable under traction and in a transverse direction. Container according to claim 12, characterized in that the joining means comprise at least one zip fastener (22, 23, 24). Container according to claim 12, characterized in that the DK 167498 B1 16 jointing means are in the form of rows of holes (33) which are located at opposite edges and arranged for use in constricting these edges by means of a rope ( 30). 5