WO2014131991A2

WO2014131991A2 - Device for providing a safe maritime area and method for monitoring wave-breaking

Info

Publication number: WO2014131991A2
Application number: PCT/FR2014/050413
Authority: WO
Inventors: Thierry FEREOL
Original assignee: Fereol Thierry
Priority date: 2013-03-01
Filing date: 2014-02-26
Publication date: 2014-09-04
Also published as: FR3002762B1; FR3002761A1; CN105189280A; EP2961650A2; US20160023728A1; AU2014222531A1; FR3002762A1; ZA201506508B; WO2014131991A3

Abstract

The present application concerns a device (1) for providing a safe maritime area, comprising a structure consisting of vertical filtering walls (2) over the entire periphery of same and a base (3) linking the lower portions of all of said filtering walls (2), said structure being provided with buoyancy means, so as to keep said base (3) submerged and the upper portions of said filtering walls (2) above the waterline, characterised by the fact that at least one portion of the surface of said base (3) is sealed (30) and in that said sealed surface (30) comprises a first face (8) that is inclined transversely relative to the horizontal in an increasing slope from a front wall (9) and a second face (10) extending from said first face (8) to a rear wall (11). The invention also concerns a method for monitoring wave-breaking.

Description

SAFE MARITIME AREA MANAGEMENT DEVICE AND METHOD FOR CONTROLLING THE DEFOLUTION OF THE WAVE

The present invention is in the field of development of a marine area for sports.

In particular, the invention relates to a device for the safe management of a maritime area, as well as a method for controlling the breaking of the swell.

The invention will find a preferential application, but in no way limiting, in order to secure the practice of nautical sports and water sports in the marine environment, such as surfing and bodyboarding, but also kitesurfing and windsurfing.

In known manner, the practice of sliding sports is more and more widespread in the world. Sports using the slippery or submerging wave surge have increased, multiplying the number of practitioners.

In line with this evolution, there are more and more accidents related to the environment in which the athletes evolve. Among them, reef wounds, jellyfish attacks and, more serious, shark attacks.

There is no structure to ensure the security and protection of users. Currently, the main security solutions are of human type, by the deployment of supervisors whose only task is to alert the sportsmen in case of shark vision and to intervene in the event of an accident to provide first aid, or of material types, such as protection nets, preventing certain marine species from entering a defined area.

The current context of the different attacks of sharks, especially on surfers or other athletes exploiting the waves, makes the practice of these sports became very risky. Serenity and security are less less present. In addition, studies are being conducted on the behavior of sharks to understand how the number of attacks has increased in recent years. A solution is also to "take" sharks to reduce their presence on sports sites, but this fishery adversely affects the ecosystem.

Current solutions are obsolete and have a destructive effect on marine life.

In addition, there is a multitude of reefs for optimizing waves by tilting a false shore. With these reefs are associated various methods of assemblies. However, all these multitudes of reefs do not meet the need for the safety of the athletes by a control of the surf associated with a protection zone. In addition, these artificial reefs are implanted on the seabed, subjected to a destructive burial phenomenon in the medium term.

In the related field of bathing, solutions have been devised to protect users by securing a swimming area, with the aim of recreating a natural swimming pool.

A first solution is described in US Pat. No. 1,925,175 for a cage with peripheral grid walls, as well as an inclined base, which is also screened but covered with a coating, to protect the feet of swimmers. This coating may in particular be constituted by a fabric or rubber, materials which do not have an explicit sealing characteristic, allowing the water to circulate. Moreover, the purpose of this coating is clearly and solely to protect the feet of swimmers, not requiring to be waterproof. In addition, the inclination of this bottom is provided to provide a slope and a rising water level for bathers, like the declivities of the floor of a pool.

Another similar solution is described in document DE 92 03 178, with perforated walls provided for allow the passage of water and a flat ground. In addition, only the movements of the device are stabilized by means of articulated arms implanted in the shell of such a mobile pool, in order to counter the effects of the swell, such as the rocking of the device.

Another similar solution of a floating enclosure is described in document US Pat. No. 4,145,770, for a similar enclosure with a bottom consisting of two inclined walls, forming a V, so that the depth at the center along the length is more important than on the coast. In addition, this bottom is provided in the form of a perforated wall, ensuring the flow of water from below between the inside and outside of the enclosure thus formed.

A last similar solution is described in US 2,092,782, directed to a water-permeable and sloping bottom. This inclination can be adjustable, to change the bathing depth. To do this, the device is equipped with retractable and articulated arms, associated with a structure of nets that prevents the intrusion of parasites.

An alternative solution is described in document US Pat. No. 3,571,819, for an enclosure implanted on the sea floor, having a natural slope, such as a beach. Such a speaker simply limits access from the outside to the inside, and vice versa. In addition, the declivity of the ground causes the surf to swell.

Currently known solutions are limited to surrounding a safe swimming area. There are no plans to control the surge of swell, to ensure the safety of swimmers and athletes.

A related device, described in DE 23

41 845, consists of a floating breakwater anchored to the sea floor. Such a device is characterized by an inclination that can go from 30 ° to 60 ° depending on the direction of propagation of the swell. Its main purpose is the protection of the coast by arrangement of several modules, stopping the swell. Indeed, such a device comprises, in the upper part emerged, a recurved return to divert the burst of the swell in the opposite direction, creating a roll acting against the natural breaking.

However, such a device and its inclination, combined with the aforementioned floating speaker solutions and their inclination, would not ensure the safety of swimmers, but on the contrary, confer a surf likely to be dangerous.

The invention aims to overcome the disadvantages of the state of the art by proposing to control the breaking of the swell in a secure floating enclosure. This control is effected in particular by attenuating said breaking.

Thus, the present invention makes it possible to practice these sports safely by controlling the incoming elements in the wave zone through a management device provided for this purpose. It respects the marine environment while ensuring a sporting practice in complete safety. The structure constituting said device acts as a true sieve against undesirable elements within the structure, in particular sharks.

The peculiarity of this invention is that it is possible to control the aquatic environment in which the sportsmen evolve, namely to control the wave, from its swelling to its break, to stop the surfer's evolution on said wave and to prevent him from going out of the enclosure of the structure.

Note that the term "parasite" in the sense of the present invention means all things potentially dangerous for the athlete within the secure area by means of said device.

The present invention therefore aims to overcome the disadvantages of the state of the art, by providing a secure layout of a maritime area. Such an arrangement is intended, on the one hand, to delimit an area not accessible to parasites through a predicted filtering periphery, but which allows the swell to pass, and, on the other hand, to control within said zone. the breaking of the swell that crosses it. To do this, such a device comprises a structure constituted, on the one hand, over its entire periphery, vertical filtering walls and, on the other hand, a bottom connecting in the lower part all said filtering walls, said structure being equipped flotation means, so as to maintain said bottom immersed and said filtering walls emerged in the upper part. It is characterized in that said bottom comprises at least a portion of its sealing surface and said sealed surface of said bottom comprises a first face inclined transversely to the horizontal in an increasing slope from a front wall and a second face s extending from said first face to a rear wall.

Note that the orientation of the device from the first face to the rear wall is chosen according to the direction and direction of propagation of the swell, to allow control of its breaking.

In addition, if the first face is provided inclined relative to a specific direction, the second face is, for its part, logically flat or inclined in another direction, preferably a slope whose degree of inclination is opposite to that of said first slope.

In addition, according to other additional features, said second face may be horizontal or inclined transversely along an increasing or decreasing slope from said first face to said rear wall.

According to one embodiment, said bottom may be divided into at least one sealed surface and at least one filtering surface.

Advantageously, said filtering walls and said filtering surface may be constituted at least in part by a lattice.

Preferably, said lattice may be at least partially flexible, semi-rigid and / or rigid.

In particular, said lattice of each filtering wall may be secured on a fixed frame constituted, on the one hand, by level of each of its lateral edges of at least one vertical upright and, secondly, at its lower edge of at least one lower spar connected to each vertical upright.

In a subsidiary manner, said fixed frame may comprise at least one mobile part.

According to a specific characteristic, said flotation means may consist at least in part of floats.

Finally, said device may comprise damping means in the form of peaks of flexible material disposed in at least one projecting line placed at least at the junction between the first and second faces or at the level of the filtering walls.

The invention also relates to a method for controlling wave breaking, in which:

the wave is filtered at the inlet;

- Wave formation is then caused and their breaking through an increasing slope in the direction of propagation of said swell;

Such a method is characterized in that it consists of:

- attenuate the energy resulting from wave breaking through a flat surface and / or a decreasing slope after the increasing slope; then

stopping the progression of the attenuated break through a filtering and / or watertight surface; and

- The wave is filtered out.

In particular, such a method makes it possible to obtain a reduction, or even until the cancellation, of the progression of the foam resulting from breaking, ensuring a slowdown, until the stop, of the sportsmen, conferring them a sports practice, especially surfing, in complete safety.

Such a process is well within the implementation of the device according to the invention, causing and then controlling the breaking of the swell through the inclination of the faces constituting the bottom walls.

In addition, the formation of a calm zone without wave flows it is good to control the surf after provoking it, attenuating it until it stops the waves after the break. This control is clearly achieved by managing the surf to mitigate it, thus stopping the waves.

Conversely, the device according to the invention aims to recreate within a secured area the surge of the swell, so that the periphery of the secure area, the energy resulting from the breaking of the swell is zero. Therefore, the device is designed so that after the swelling of the swell, the breaking of the wave and the energy resulting from breaking in the form of white foam, there is more or almost no energy peripheries of the device.

The common purpose of the device and the method is to protect the swimmers and athletes by reducing the surge of the swell, avoiding waves drive the user against the walls. It is therefore indeed a same inventive concept linking said device and said method according to the same invention.

Other characteristics and advantages of the invention will emerge from the following detailed description of non-limiting embodiments of the invention, with reference to the appended figures, in which:

- Figure 1 shows schematically a perspective view of a first embodiment of a device according to the invention;

- Figure 2 schematically shows a transverse vertical sectional view along a median plane of Figure 1;

- Figure 3 schematically shows a perspective view of a second embodiment of said device;

- Figures 4 and 5 show schematically two different embodiments of a detail of the device, namely peripheral walls; and

- Figure 6 schematically shows a top view a particular embodiment of the device according to the invention.

It will be noted that FIGS. 1, 2 and 6 show schematically different progressions of the swell traveling through the different parts constituting said device.

The present invention relates to a device 1 for the safe layout of a maritime area.

Such a device 1 is intended to be implanted at sea, near the coast, or not, so as to define a volume constituting said area. In addition, firstly, said device 1 provides for prohibiting access from the outside to the interior of the area, parasites, especially sharks. Furthermore, in combination, said device 1 is provided to allow the swell to be crossed and to control its breaking within said zone.

According to a first feature, the device 1 provides for delimiting an area within which no parasite can penetrate. To do this, said device 1 comprises a structure generally forming an open cage in the upper part, but completely closed in the lower part, in particular located at least partly below the water level.

More specifically, said structure is constituted, on the one hand, over its entire periphery, vertical filtering walls 2 and, on the other hand, a bottom 3 connecting at least in the lower part all said filter walls 2. In addition, said bottom 3 is constituted at least in part by a sealing surface 30. It can also consist of at least one filtering surface 31. In sum, said bottom 3 closes the filtering walls 2 at the bottom, preferably at the level of their respective lower edges, but said filter walls 2 may also extend at least partially under said bottom 3, namely protruding and sinking deeper below it. In addition, the filtering character of said walls 2 corresponds to sieving, in the manner of a grid but vertically arranged, or playing the role of a net. To do this, said filtering walls 2 and said filtering surface 31 are constituted at least in part by a lattice. The latter may consist of a mesh of crossed frames consisting of son or cables, rods or bars.

This lattice configuration has the advantage of preventing access to any parasite, depending on the spacing of the meshes, while allowing the current to flow through each filtering wall 2, in particular the swell, with less resistance to this. Ocean current.

In addition, said lattice is at least partially flexible, semi-rigid and / or rigid. Preferably, a portion of the mesh is made of a flexible material, such as a net, while another part is made of a rigid material such as a mesh. The flexibility and the rigidity can be obtained by interleaving the frames, for example orthogonally in columns and rows, or in a wavy manner, for example zigzag, then forming diamonds. These characteristics can also be obtained through the material used, namely plastic or composite for a flexible frame or metal to obtain a certain rigidity.

According to an additional characteristic, said lattice of each filtering wall 2 is secured on a fixed frame 4 constituted, on the one hand, at each of its lateral edges 40 of at least one vertical upright 5 and, on the other hand, at its lower edge 41 of at least one lower spar 6 connected to each horizontal upright 41.

It will be noted that said frame then has an overall U shape, when the wall has a parallelepipedal shape, as can be seen in FIG. 4, said spar 6 being then horizontal. However, this spar 6 can be provided at least in part inclined, when one of said uprights 5 is longer than the other, forming a trapezoidal wall or in the form of a complex polygon, as can be seen in FIG.

In addition, a plurality of intermediate uprights may be arranged vertically, at regular intervals, between the two end uprights 5. These intermediate uprights make it possible to improve the rigidity of the frame and the maintenance of the mesh constituting each filtering wall 2, reinforcing the latter.

In addition, transverse wiring can be added, especially at the upper edge, forming a guying, to improve the rigidity of said frame.

Finally, the frames of the adjacent filter walls can be made integral with each other, forming a fence surrounding the perimeter of the device 1, and with the bottom 3, closing the area from below.

According to a particular embodiment, said fixed frame of each filtering wall 2 comprises at least one mobile part 7. The latter is slidably arranged in a vertical translation relative to said fixed frame. This displacement is subject to the swell, in particular its wave displacement, so that at least one height of each moving part 7 exceeds above the water level, while the rest is immersed, and the fixed frame is always immersed. This emergent height prevents the parasites from passing over the filtering walls 2.

As such, said structure is equipped with flotation means, so as to maintain said bottom 3 immersed and said filtering walls 2 emerged in the upper part, in particular at their mobile part 7.

To do this, according to a first embodiment, said flotation means may consist at least in part of floats. Such floats may be subject to each filter wall 2, in particular at their respective frames. These floats can be immersed, secured to the fixed frame, or partly afloat when they are attached to moving parts 7.

Note that, in a particular embodiment, said floats can be formed at least in part by the uprights 5 and the longitudinal members 6, provided hollow and hermetically sealed, whose interior volume ensures at least a portion of the waterline of the entire device 1.

According to another embodiment, said flotation means may consist at least in part of at least one anchorage on the seabed. Such anchoring may be constituted by a rigid carrier structure, resting on the seabed and anchored on the latter, or even partially buried. Said anchoring may also consist of wiring connecting the structure to the seabed, whose voltage prevents the device 1 from drifting.

According to another possible implementation, said device 1 may at least partly rest directly on the seabed, or on an artificial enhancement affixed and / or buried at said seabed. Said enhancement can then be likened to an artificial reef. Therefore, the bottom 3 rests at least partly on the upper part of this artificial enhancement.

Thus, the device 1 is kept afloat, delimiting an area closed to parasites, but traversed by the swell.

In this respect, according to another essential characteristic, the device 1 provides for controlling the breaking of the swell within the zone it delimits. This control takes place through the orientation and inclination of the various elements constituting the structure of the device 1.

It should be noted that this control consists first of all in causing the breaking, according to an amplitude or a range of amplitudes, to guide the breaking waves and to attenuate or even stop the progression of the foam resulting from breaking.

To do this, first of all, the surface of at least one part of said bottom 3 is provided tight. This surface then forms a floor. Therefore, the swell is split in two when it passes through the device 1. In particular the waving of the swell is divided, remaining identical or substantially equivalent under the device 1 and the portion passing through it above will be changed.

As such, the sealed surface of said bottom 3 comprises a first face 8 inclined transversely to the horizontal along an increasing slope from a front wall 9 and a second face 10 extending from said first face 8 to a wall rear 11. Said front wall 9 is upstream relative to the direction of movement of the swell, while the rear face 11 is downstream.

Therefore, the inclination of the first face 8 simulates an increase in the seabed, so that the amplitude of the wave artificially generates the breaking wave. In sum, this first inclined face 8 is an ascending floor that will slow the swell and cause breakage in the form of breaking waves.

It will be noted that the degree of inclination of the slope of the first face 8, as well as its height and its width, determine, with respect to the entry level of the swell within the device 1 (depending on the level of its flotation) , the height of the waves thus created. In particular, this height is variable, depending on the characteristics of the swell, but the configuration of the first face 8 provides waves at a defined range of sizes and forces. In particular, this configuration makes it possible to obtain rolling waves of roll type, with a view to the sporting practice of surfing.

According to various embodiments, the degree of inclination can be constant, forming a uniformly rectilinear slope, such as a single plane, but this degree can also be expected to vary, forming several planes with different gradients, or even forming a first concave face 8 or convex if the degree of inclination also varies in the longitudinal direction, from one side to the other of said device 1.

This generation of waves is schematically modeled in Figures 1 and 2.

According to a particular embodiment, at the junction between the parts 8 and 10, and / or on at least a portion of the portion 10, may be placed perpendicular to the advance of the foam damping projecting means. These means may be in the form of peaks or lamellae 100, arranged next to one another along at least one line, preferably at least at the high point level 12. Several lines of peaks 100 may also be arranged, spaced apart at intervals regular or not, protruding from the surface of at least a first portion of the portion 10.

According to another embodiment, these peaks 100 may be provided protruding with respect to the filtering walls 2.

In addition, said peaks 100 may be made of a flexible material, especially in plastic form, in particular natural or synthetic rubber. Thus, the foam arriving perpendicularly to the peaks 100, applies a transverse thrust which folds them. The energy is thus transmitted to the peaks by this twist. After passing on the flexible peaks 100, there is therefore little or no foam. These peaks can be placed on one or more rows. They may be subject to the line of junction or crest 12 between parts 8 and 10. The peaks 100 being flexible, the safety of the athlete and his equipment remains intact.

For its implementation, the device 1 is oriented specifically with respect to the direction of propagation of the swell, as modeled in FIGS. 1 and 2. In particular, at least said first face is oriented in relation to the direction of displacement of the swell, orthogonally or at an angle.

Like a beach, the ascending face 8 causes the formation of waves, breaking them and then breaking them. along its increasing slope, to a high point 12, located at the junction with said front face 8 and the rear face 10.

In addition, it will be noted that the breaking can be oriented laterally, from one side to the opposite side of the front face 8, or from the center towards the two lateral sides. To do this, the front face 8 can be provided inclined laterally accordingly. Thus, it is possible to control the direction of wave unfurling during their breaking, namely to the left or to the right, or both at once.

Once the broken wave, at the high point 12, there remains only foam driven with the force resulting from the previous wave. To prevent the athlete continues to be driven and does not hit the rear wall 11, the device 1 provides to reduce the driving force of the foam, slowing its progression or up to 1 'cancel .

Thus, in a second step, the second rear face 10 has the role of killing the wave after breaking and stop its advancement. To do this, at the end of the race of the wave, is simulated an increase in the depth, through the inclination of the part of the device 1 located after the breaking.

For this purpose, said second face 10 may consist of at least one level, horizontal or substantially horizontal over part of its width, or have a slope, according to a decreasing slope.

Like the first face 8, the second face 10 may at least partly resemble, on a first portion, a floor, flat and / or descending.

As such, as can be seen in FIG. 2, said second face 10 can also be provided inclined transversely along a decreasing slope from said first face 8 to said rear wall 11.

In addition, the surface of this second face 10 can be provided at least on its first sealed part, then at least on a second filter part. In the latter case, this filtration creates a vacuum as a result of the descending floor, the foam then meeting the water contained in this part and communicating with the outside of the device 1. By experiment, the energy after breaking contained in the foam dissipates more quickly with a deep seabed. This effect is adapted within the device 1 by setting up filtration at the second surface 10, stopping the progression of the foam and at the same time stopping the race of the athlete.

It should be noted that this filtration also makes it possible to prohibit access from the bottom to the inside of the device 1 to any parasite.

Preferably, the second face 10 may consist entirely of a filtering surface. Thus, the scum resulting from the breakup dissipates more quickly by simulating a vacuum between the first portion 8 and the rear wall 11. This vacuum is ensured by the introduction of filtrations which will ensure a filtration function by decreasing more rapidly. foam from the breaking. As for the filtrations 2 and 9, this part can be fixed on the part 8 by a spar and then reinforced by amounts or rails, horizontal or inclined.

If a flat portion makes it possible to slightly limit the progression of the foam, its downward slope simulates a subsidence of the seabed, attenuating more strongly this progression, even going as far as stopping it.

It will be noted that the slope of the rear face 10 can extend to reach the level of the water at the rear of the device 1. According to the embodiment shown in FIG. 2, the rear wall 10 extends and descends below sea level at the rear of the device 1.

According to an additional embodiment, a vertical and watertight structure can be placed under part 8 to further simulate the effect of a shore upon the arrival of the swell at the level of part 8.

As mentioned above, the device 1 plans to guide wave breaking, in particular to guide the attenuation of the progression of the foam after breaking.

To do this, at least said second face 10 is inclined longitudinally from said high point 12 at said first face 8 to a low point 13 at the rear portion between 10 and 11.

Thus, the breaking will be mitigated, even stopped, at the end of the race, at the junction between the parts 8 and 31. To prevent the scum damages the structure and projects the athlete on the walls, the surface 31 is extended to the rear of the structure.

Preferably, this attenuation will be obtained by means of the filtering surface 31 of the bottom 3. To do this, said filtering surface 31 consists of a filtering face, namely constituted by a lattice, at least longitudinally inclined according to a decreasing slope from said first 8 and second 10 inclined faces to at least one low filtering point 14 at the level of at least one of said filtering walls 2. The filtering surface 31 then forms a pit, within which the waves come to die . Afloat, this pit then forms a calm zone, without wave, as visible in Figure 3.

As mentioned above, the degree of inclination of the slope of the first face 8, as well as its height and width, determine, with respect to the input level of the swell within the device 1 (depending on the level of its flotation ) as well as the inclination of the first face 8, the distance traveled and the speed of the waves, as well as their attenuation. These different parameters can be taken into consideration to create a device 1 tailored to the level of practitioners, especially surfers, and their requirements.

In addition, the arrangement of the device 1 with respect to the swell, in particular its mean direction 15, as well as marine currents, influences the previously mentioned control. As shown in Figures 1 and 2, the device 1 is implanted so that the front wall 9 is arranged facing the direction and the major direction of the swell, modeled by a thick arrow. Said front face 9 may be orthogonal or intersecting at a different angle relative to the direction of the swell. According to another embodiment, the bottom 3 may be provided partially articulated between these constituent parts. In particular, the junction between the sealing surface 30 and the filtering surface 31 can be achieved by means of points or a junction line ensuring the mobility of its two walls relative to each other. In particular, this junction can be effected by means of a pivotal connection, allowing the rotation of the filtering surface 31, then mobile in rotation with respect to the sealed surface 30, then fixed.

In addition, this junction may be provided removable, to allow the removal of the filtering surface 31, in particular to disassemble this moving part of the device 1 in case of strong waves liable to damage.

In addition, it will be appreciated that additional means may be added for connecting one or the other of said surfaces 30 and 31 to one another, or one and / or the other to the seabed, separately and independent. In the latter case, separate underwater foundations connecting each surface 30, 31 may be considered.

In a subsidiary manner, said device 1 may comprise a rear zone, not shown, partially immersed or not, forming a rest or pleasure area. It will be noted that such a device 1 of arrangement can have significant dimensions, extending in length and in width over several tens of meters, even more than a hundred meters, and in height over several meters, even at least ten meters. Under these conditions, an athlete, even beginner, can easily walk the waves thus artificially generated and whose strength and race is controlled to finish within the quiet zone. The latter also provides access upstream to the wave formation zone at the first face 8.

The device 1 according to the invention therefore constitutes an arrangement offering increased security by controlling the swell inside its structure, the aim being to control the shape of the wave and then stop it, by reducing the energy previously generated, to stop a user during his race, keeping it inside this area and secured.

The invention also relates to a method of controlling the wave breaking, in particular within the device 1 as previously described.

Such a method consists in filtering the swell at the inlet; cause the formation of waves and their breaking through an increasing slope in the direction of propagation of said swell; then filter the swell out after breaking.

Advantageously, said method consists in attenuating the wave breaking through a flat surface and / or a decreasing slope after the increasing slope and before the output filtration.

Therefore, the breaking will be mitigated, even stopped, at the end of the race, at the junction between parts 8 and 31. To prevent the foam damages the structure and projects the athlete on the peripheral walls, the surface 31 can be extended to the rear of the structure, as can be seen in FIG. In short, after creating the breaking wave, the resulting energy is reduced, in order to avoid damaging the output filtration means and to ensure a slowdown for the sportsman.

At the arrival of the swell at the structure, it is filtered by the front filtration zone. There is a difference in depth between the seabed and the artificial bottom which causes an increase in amplitude of the swell as it penetrates into the structure. The orientation of the tilt of the structure horizontally and vertically allows an optimal swell wave according to the requirements of surfers and other sportsmen of this type.

At the end of the structure the breakaway part, allows to control the shape of the wave and to stop it. The goal is to stop the user during his race while keeping him in the secure structure. This part has different characteristics from the previous zone.

The purpose of the rear part is to reduce the energy resulting from the breaking up perpendicular to the direction of propagation of the swell.

The external filtration on the sides is made by a similar structure to the front filtration area. This one has the function to evacuate the energy resulting from the swell and to avoid external intrusions.

All of the walls are assembled together and / or on the seabed by means allowing their holding in position and their setting in position.

Wave swell control is composed of a combination of several parts, elements or modules all responding to a specific need.

The swell amplifies when it arrives in the structure and goes through a first zone of filtration of the parasites, in continuation there is a surge of the swell by the artificial bottom and this breaking is decreased then stopped via a zone of stop of swell . In addition, this part reduces the energy released as a result of breaking waves to prevent the filtering system on the sides from being overworked. Just after the break, there is a lot of energy. In addition, the safety of the athlete is increased by avoiding being tackled on the rear filter area. Thus the water is filtered 360 °, all around the perimeter of the device, preventing the intrusion of all undesirable things in the protected and secure area.

In a second aspect of the invention, the materials forming the filtration elements are provided, on the one hand, rigid and / or flexible and, on the other hand, fixed and / or mobile. This filtration provided by these elements, exceeds the maximum height of the outgoing swell and the swell entering from the sides towards the inside of the secured zone. The chosen filtration is greater than the maximum potential that can reach the water around the structure. The control areas of the swell, constituting the bottom, whether sealed or sieved, provide a filtering function from below the structure.

In a third aspect, the selected filtration means is held in position by a fixed or damping structure or movable between the front filtration zone and one of the parts of the structure, or the seabed, to prevent the safety sieving is removed around the structure.

In a fourth aspect, reinforcing elements may be added along the structure, to distribute the forces on the filter elements. These elements are placed at the level of the walls or on the seabed. Reinforcement is provided by a proper beam structure. Consequently, the flexion due to the forces applied with the chosen solution is less than a certain value. This bending prevents the filtration from driping at certain points in the water. Thus solidified on the front face, there is no risk that the filtration system does not sink or drip under the applied forces. Solidification structures are put in the same way to ensure the resistance of the parts stop the surf and stop the race of the user.

In a fifth aspect, the athlete's breaking and running stop zone is composed of devices having this function. This end of breaking is effected by a change in the characteristics of the part intended for breaking waves. The characteristics of this part of the structure meet the need for filtration of parasites, either by its sealing or by its sieving process.

Thus the user moves freely and safely in the structure.

Claims

1. Device (1) for the safe layout of a maritime area, comprising a structure constituted, on the one hand, over its entire periphery, of vertical filtering walls (2) and, on the other hand, of a bottom ( 3) connecting in the lower part all said filtering walls (2), said structure being equipped with buoyancy means, so as to maintain said bottom (3) immersed and said filtering walls (2) emerged in the upper part, characterized in that said bottom (3) comprises at least a part of its sealing surface (30) and said sealed surface (30) comprises a first face (8) inclined transversely to the horizontal in an increasing slope from a front wall (9). ) and a second face (10) extending from said first face (8) to a rear wall (11).

2. Device (1) according to claim 1, characterized in that said second face (10) is horizontal or inclined transversely along an increasing or decreasing slope from said first face (8) to said rear wall (11) .

3. Device (1) according to one of claims 1 or 2, characterized in that said bottom (3) is divided into at least one sealing surface (30) and at least one filter surface (31).

4. Device (1) according to claim 3, characterized in that said filtering walls (2) and said filtering surface (31) are formed at least in part by a lattice.

5. Device (1) according to claim 4, characterized in that said lattice is at least partially flexible, semi-rigid and / or rigid.

6. Device (1) according to claim 5, characterized in that said lattice of each filter wall (2) is secured on a fixed frame (4) consisting, on the one hand, to level of each of its lateral edges (40) of at least one vertical upright (5) and, on the other hand, at its lower edge (41) of at least one lower spar connected to each vertical upright.

7. Device (1) according to claim 6, characterized in that said fixed frame (4) comprises superiorly at least one movable part (7).

8. Device (1) according to any one of the preceding claims, characterized in that said flotation means consist at least in part of floats.

9. Device (1) according to any one of the preceding claims, characterized in that it comprises damping means in the form of peaks (100) of flexible material arranged in at least one projecting line placed at least at the junction between the first (8) and second (10) faces or at the level of the filter walls.

10. control method of wave breaking, in which:

the wave is filtered at the inlet;

characterized in that it consists of:

- The wave is filtered out.