ABSTRACTDescribed is a. Fish farm for raising fish in the open sea. The fish farm cornprises an elongate support pile which is anchored on an underside to the seabed, and a cage structure which is= arranged round the support pile and comprises walls which arc substantially impenetrable to the =fish for raising. The cage structure is suspended from the support pile by means of suspending rneans such Els traction cables, wherein height-adjusting means can vary the length orthe suspension so that the cage structure can be rnoved along the support pile between a position in which the cage structure is situated above water and a position in which the cage structure is.. = situated under water. Also described is a method for constructing the fish farm at open sea.=Date Recue/Date Received 2020-10-26
22 - Rope, netting, tents, awnings, sails and sacks; padding and stuffing materials
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
44 - Medical, veterinary, hygienic and cosmetic services; agriculture, horticulture and forestry services
Goods & Services
Cords, twines of natural or textile fibres, or plastics; Fishing nets; Hammocks; Bags and sacks for packaging, storage and transport; Animal fibres; Raw textile fibres; Animal hair; Cocoons; Jute; Raw or treated wool; Raw silk; All of the aforesaid products also marine biodegradable or biobased. Building construction; Soil dredging, underwater dredging, dredging of river channels and land reclamation; Construction, deepening and extension of ports and waterways; Harbour construction; Maintenance and repair of dredging equipment and vessels; Construction project management services for dredging and land reclamation; Sand wave dredging in open sea; Construction and supervision of road, water and tunnel works; Foundation and embankment dredging for barrage constructions; Construction of coast- and coast bank strengthening works; Construction, repair, demolition, renovation and installation of offshore structures; Construction and installation of pipelines, including marine lifting services; mechanical lifting services for the construction industry; Drilling of wells; Supervision of building hydraulic constructions; Gravel and sand extraction; Construction and building of artificial islands and peninsulas; Construction of water-retaining dykes; Construction, repair and installation of offshore structures including decommissioning or rejuvenation of offshore structures (being natural or man-made); Underwater construction; Construction supervision; All of the aforesaid services related to activities taking place in and at the estuaries, sea/offshore or coastal areas; Installation of environmental protection systems, to restore, conserve, stabilise nature reserves in relation to dredging and reclamation operations; Construction works in aquatic environments in relation to recreational space, nature reserves, carbon sequestration, climate change, water quality, land subsidence, society, economy; Construction works in aquatic environments with relation to wave attenuation, storm surge, sea level rise and coastal defense; Consultancy in the field of offshore construction. Scientific and technological services and research and design relating thereto; Industrial analysis and research services; Engineering services; Surveying and exploration services; Consultancy in the field of energy; Natural sciences and earth science services; Research services in relation to engineering in aquatic environments, dredging technologies and land reclamation activities; Scientific and technological researches relating to environmental dredging; Engineering services in aquatic environment including evaluations, estimates, research, survey and reports relating to dredging and land reclamation activities; Technical consultancy services relating to dredging, land reclamation activities and auxiliary works; Scientific research services for soil remediation and sludge treatment; Research and development of computer programs and software dedicated to dredging technologies and land reclamation activities; Geophysical and geological exploration; Exploring services, including the investigation of sites at sea in relation to the seabed, substrate, current, tides and waves; Oceanographic research services; Studying and carrying out offshore activities; Research and development services relating to marine bio building species; Research and development services in relation to ecosystems and biodiversity in relation to engineering in aquatic environments; Research and development services regarding nature based solutions in relation to engineering in aquatic environments; Engineering services in relation to the restoration, conservation, or stabilisation of nature reserves in relation to dredging and reclamation operations; Engineering in aquatic environments in relation to recreational space, nature reserves, carbon sequestration, climate change, water quality, land subsidence, society, economy; Engineering in aquatic environments with relation to wave attenuation, storm surge, sea level rise and coastal defense; Engineering, research and development of wickerwork, plaits, mats, textiles, bags and ropes used as substrate in relation to nature based solutions and bio building species. Agriculture, horticulture and forestry services; Landscape design.
3.
SCOUR PROTECTION FOR AN UNDERWATER BOTTOM ALONGSIDE A QUAY WALL, AND METHOD FOR PROVIDING THE SAME
A scour protection for an underwater bottom alongside a quay wall is disclosed. The scour protection comprises a foundation/leveling layer of rocks with a size distribution conforming to 100 < Dn50 < 225 mm, and a plurality of prefabricated reinforced concrete slabs, adjacently positioned on top of the foundation/levelling layer and leaving a gap between edges of the slabs, the slabs having a lateral dimension of at least 3.5 m. A method for providing the scour protection is also described.
A drag head of a trailing suction hopper dredger, comprises a visor which is dragged over the bottom in a dragging direction and herein loosens soil, and a suction conduit which connects to the visor and which discharges the loosened soil. The drag head is provided with cutting bodies for loosening the soil, with the proviso that the cutting bodies comprise conical bits. Harder soil can be dredged efficiently with a trailing suction hopper dredger equipped with the drag head.
The invention relates to a cutter head (10) for dredging ground under water, this cutter head being suitable for attachment rotatably around a central axis to the ladder (2) of a cutter suction dredger (1) and for being moved through the ground therewith in a lateral sweeping movement, the cutter head comprising a base ring(13), a hub(14) situated at a distance in the direction of the central axis from the base ring, and a plurality of support arms (15) extending from the base ring to the hub, wherein a passage opening(16) is located between support arms and wherein the cutting tools (20) are axisymmetrical, at least at their free outer end. The invented cutter head has an increased efficiency, in particular for ground with an Unconfined Compressive Strength (UCS) of at least 50 MPa.
The invention relates to a method for loading a dredging vessel (1) with dredged material in a hold (2) provided for this purpose and having a height-adjustable overflow (10). In the method a dredged material/water mixture is carried via an inlet (3) into the hold (2), wherein the mixture forms a settled layer (20) therein due to settling of the heavier dredged material particles. The height position of the overflow (10) above the settled layer (20) is adjusted subject to a value of a control parameter measured during filling of the hold (2), in particular the average horizontal velocity of the non-settled dredged material/water mixture above the settled layer (20) between the inlet (3) and the overflow (10). The quality of the dredged mixture can be better controlled using the invented method. The invention likewise relates to a dredging vessel particularly equipped for performing the invented method.
The invention relates to a method and device for treating dredged material (50) extracted by means of a dredging vessel (30). In the method the dredged material (50) is fed from the dredging vessel (30) to at least one centrifugal separator (10), which centrifugal separator separates the dredged material into a wet fraction (51) and a dry fraction (52), wherein at least the dry fraction is collected. The invention likewise relates to a method for transferring large quantities of dredged material from extraction areas to a recovery area located a great distance away. The method comprises of transporting dredged material, brought for this purpose into transportable condition, using a seagoing transport vessel (40) with considerably larger dimensions than a dredging vessel (30), wherein the transportable condition is achieved by treating the dredged material according to the above described method.
The invention relates to a pontoon that is adapted for transporting dump material such as rock boulders and stones. The pontoon is on at least two sides provided with a bridge along which dry equipment can be supplied, which pontoon is further provided with anchoring means such as at least one spud pole, that is movable up and down in the vertical direction, as well as means for moving and positioning the pontoon. The pontoon may be used on the one hand for loading and transporting of dump material such as rock boulders and stones, and on the other hand also as positioning platform for a second pontoon. With the pontoon dump material can be dumped into water in an efficient way, in order to form a breakwater for instance.
The invention relates to a method for constructing a water barrier. In the method a core of quarry run is arranged on the underwater bottom and provided with a protective layer of stones or concrete blocks, with the proviso that, at least at the position of the water barrier, the underwater bottom is raised using bottom material. The method is particularly suitable for constructing a water barrier for relatively deep water.
The invention relates to a cutter head (10) for dredging ground under water, this cutter head being suitable for attachment rotatably around a central axis to the ladder (2) of a cutter suction dredger (1) and for being moved through the ground (9) therewith in a lateral sweeping movement, the cutter head comprising a base ring(13), a hub(14) situated at a distance in the direction of the central axis from the base ring, and a plurality of arms (15) extending from the base ring to the hub, wherein a passage opening (16) is located between arms and wherein the arms are provided with a first series of cutting tools on a leading part (15a) relative to the direction of rotation of the cutter head, and wherein at least one arm is provided with a second series of cutting tools on a part of the arm (15b) facing away from the central axis.
The invention relates to an excavating device, comprising a floating device which can be moved in a navigating direction and to which a drag head (1) is attached which during use is dragged over the bottom (50) and herein loosens soil, and a suction conduit (4) which connects to the drag head (1) and which discharges the loosened soil. The excavating device is provided with a steering device (10) for moving the drag head (1) out of the navigating direction. The invention also relates to a method for excavating ground (50) using the excavating device, and a computer program for performing the method.
The invention relates to a method for controlling a mobile ground working device, such as a trailing suction hopper dredger or bulldozer. The method is characterized in that it comprises at least the steps, proceeding under the control of a central computer via a digital network, of A) presetting an optimum criterion; B) collecting information relating to the current state of the ground; C) collecting information relating to the current state of the ground working device, including at least its position; and D) calculating the control of the ground working device at which the optimum criterion is minimized. Using the invented method ground can be worked with an increased efficiency compared to the known method. The invention likewise relates to a computer program comprising program instructions for having a computer perform the method, and to a computer adapted to run the computer program.
The invention relates to a drag head (1) of a trailing suction hopper dredger, comprising a visor (2) which is dragged over the bottom in a dragging direction and herein loosens soil, and a suction conduit (5) which connects to the visor (2) and which discharges the loosened soil. The drag head is provided with cutting bodies for loosening the soil, with the proviso that the cutting bodies comprise bits (20). Harder soil can also be dredged with the drag head by applying bits (20). The invention also relates to a method for dredging at least partially hard bottoms under water with a trailing suction hopper dredger equipped with the drag head.
The invention relates to a cutter head (10) for dredging ground under water. The cutter head (10) is suitable for attachment to the ladder (2) of a cutter suction dredger (1) and for being moved through the ground (9) therewith in a lateral sweeping movement. The cutter head (10) comprises a rotation-symmetrical revolving body (11) which is rotatable around its rotation axis (12) by means of drive means and which is provided along its peripheral surface with a number of cutting tools (20) for penetrating into the ground (9), wherein the rotation axis (12) of the cutter head (10) runs substantially perpendicularly of the longitudinal direction (200) of the ladder (2) and substantially tangentially to the direction of the sweeping movement. The invention likewise relates to a method for breaking ground under (9) water, making use of the cutter head (10).
The invention relates to a drag head (1) of a trailing suction hopper dredger. The drag head comprises a visor (2) which is dragged over the bottom and herein loosens soil, and a suction pipe (3) which is connected to the visor (2) and which discharges the loosened soil. The visor (2) comprises at least two individually movable pressure elements (21, 22, 23, 24) transversely of the dragging direction which comprise a number of substantially disc-shaped penetrating bodies (51, 52, 53, 54). The penetrating bodies transmit forces to the bottom via their peripheral edge under the influence of the weight of the pressure element in which they are received, whereby the bottom is broken. The drag head has an improved efficiency.
The invention relates to a drag head of a trailing suction hopper dredger. The drag head comprises a rotatable visor (2) connected to a suction pipe (1) for discharging soil via the suction opening (15) of the visor, wherein the visor is provided with a catching construction (20) for undesirable objects. The catching construction closes the suction opening except for passage openings (21), wherein at least a number of passage openings have a variable passage area. The invention also relates to a method for breaking up and/or dredging at least partially hard grounds under water using a trailing suction hopper dredger equipped with a drag head.
In one embodiment of the present invention, an apparatus is disclosed for accommodating a substantially vertical spud of a dredging vessel with a longitudinal direction, including a spud carriage which is mounted for limited rotation around a horizontal transverse axis, wherein at least a first and a second spring device is arranged under bias between vessel and spud in the longitudinal direction for the purpose of absorbing a moment on the spud carriage, which first and second spring devices compensate each other in the non-loaded situation of the spud; and at least one spring device is provided with a spring force limiting device for limiting the tension in the spring element from a determined maximum moment on the spud carriage.
The present invention relates to a method for optimizing the dredging of an area by a dredge equipped with a cutter suction head (4) comprising the steps of : obtaining conventional soil information of the area to be dredged; measuring local soil parameters in and around the position of the cutter head during dredging; calculating dredging parameters for a current and subsequent cutter head position based on the combination of conventional and local soil parameters to optimize yield and cutter wear; and adjusting the dredging parameters so giving optimum efficiency at a current and subsequent cutter head position. It also relates to a system that implements the method.
The present invention relates to a system for optimizing the dredging of an area by a vessel (25) equipped with a cutter head (4), comprising a means to measure local seismic velocity in front of the vessel (25), said means comprising a set of seismic receivers (11, 11', 11', 11'') supported by a frame (10) configured for attachment to and projection from the bow end of the vessel, which frame aligns the seismic receivers (11, 11', 11', 11'') above and in front of the cutter head (4). It also relates to a method for optimizing dredging.
Device for changing a suction mouth of a cutter suction dredge of a vessel with cutter ladder (1), comprising a work platform (6) which, as seen in the transverse direction of the vessel, is provided substantially in the middle with an opening (18), wherein: a support structure (16) is provided which can be fixedly connected to the work platform (6) in a position substantially under the opening (18), which support structure (16) is adapted to support a suction mouth; the work platform (6) with support structure (16) is tiltable around a first, substantially horizontal transverse axis (23) between a substantially horizontal operating position and a high position in which the cutter ladder (1) can be moved upward, which positions are such that the work platform (6) with support structure (16) is movable from its high position to its operating when the cutter ladder (1) is situated in a high raised position.
E02F 3/90 - Component parts, e.g. drives, control devices
B66F 11/04 - Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
Apparatus for accommodating a substantially vertical spud of a dredging vessel with a longitudinal direction, comprising a spud carriage which is mounted for limited rotation around a horizontal transverse axis, wherein-at least a first and a second spring means is arranged under bias between vessel and spud in the longitudinal direction for the purpose of absorbing a moment on the spud carriage, which first and second spring means compensate each other in the non-loaded situation of the spud; and-at least one spring means is provided with a spring force limiting means for limiting the tension in said spring element from a determined maximum moment on the spud carriage.
