ES2251431T3

ES2251431T3 - STABILIZED LAND AND MANUFACTURING METHOD OF SUCH STABILIZED LAND.

Info

Publication number: ES2251431T3
Application number: ES01118104T
Authority: ES
Inventors: Eric Maton
Original assignee: Cefip S A; CEFIP SA
Current assignee: Cefip S A; CEFIP SA
Priority date: 2000-08-01
Filing date: 2001-07-26
Publication date: 2006-05-01
Anticipated expiration: 2021-07-26
Also published as: EP1178155A1; LU90619B1; DE60114725T2; DE60114725D1; EP1178155B1; ATE309413T1

Abstract

The stabilized soil (10) for a tennis court has a base surface (24) into which fibres (26) are placed vertically to form a fabric. A lower layer (28) of granules is placed on the base and between the fibres. The height of the lower layer is less than that of the fibres. An upper layer (30) is piled rock on the lower layer extends above the ends of the fibres.

Description

Terreno estabilizado y método de fabricación de dicho terreno estabilizado.Stabilized land and manufacturing method of said stabilized terrain.

La presente invención se refiere a un terreno estabilizado, en particular para la práctica del tenis, y a su método de fabricación. La invención se refiere igualmente a un método de renovación de los terrenos estabilizados existentes.The present invention relates to a field stabilized, particularly for the practice of tennis, and its manufacturing method The invention also relates to a method of renovation of existing stabilized land.

En la patente EP-B-0 683 836 se describe dicho terreno de tenis estabilizado, conocido con el nombre de "French Court". El terreno estabilizado comprende un soporte textil estructurado que forma un tapiz de estructura abierta y compuesto de fibras sintéticas imputrescibles. Dicho soporte textil se carga sucesivamente de una capa de arena más una capa de ladrillo molido. La capa de arena, cuya altura es ligeramente inferior a la altura de las fibras del soporte textil, presenta una composición granulométrica que asegura un drenaje adecuado. La capa de ladrillo molido, que presenta una composición granulométrica inferior a la de la capa de arena, se dispone de manera que rellene el vacío subsistente en la superficie del soporte textil.In the patent EP-B-0 683 836 describes said stabilized tennis court, known as "French Court ". The stabilized terrain comprises a textile support structured forming an open and composite structure tapestry of imputrescible synthetic fibers. Said textile support is loaded successively from a layer of sand plus a layer of ground brick. The sand layer, whose height is slightly less than the height of the fibers of the textile support, it has a composition granulometric that ensures adequate drainage. Brick layer ground, which has a granulometric composition lower than that of the sand layer is arranged so that it fills the void subsistent on the surface of the textile support.

El "French Court" ofrece una comodidad de juego equivalente a la de una pista de tenis de tierra batida tradicional. Sin embargo, un terreno estabilizado de este tipo requiere un mantenimiento continuado y resulta relativamente frágil. Así, es preciso regar el ladrillo molido para evitar que lo arrastre el viento, y además, se debe hacer un aporte regular de ladrillo molido y barrer el terreno frecuentemente. Igualmente, cuando hace mucho calor, el ladrillo molido, que se debe mantener muy húmero (regado intensivo), sufre en estas condiciones un sobrecalentamiento. Así, el ladrillo molido tiene tendencia a endurecerse, lo que convierte el terreno en impermeable.The "French Court" offers a comfort of game equivalent to that of a clay court traditional. However, a stabilized terrain of this type requires continuous maintenance and is relatively fragile. Thus, it is necessary to water the ground brick to prevent it drag the wind, and in addition, a regular contribution of ground brick and sweep the ground frequently. Equally, when it is very hot, the ground brick, which must be maintained very humerus (intensive watering), undergoes under these conditions a overheating Thus, ground brick has a tendency to harden, which makes the terrain waterproof.

Objective of the invention (problem to be solved by invention)

El objetivo de la presente invención es proponer un terreno estabilizado, particularmente para la práctica del tenis, que no adolezca de las desventajas mencionadas anteriormente. De acuerdo con la invención, dicho objetivo se consigue por medio de un terreno estabilizado según la reivindicación 1.The objective of the present invention is to propose a stabilized terrain, particularly for the practice of tennis, which does not suffer from the disadvantages mentioned above. According to the invention, said objective is achieved by means of of a stabilized terrain according to claim 1.

General description of the claimed invention with its main advantages

Un terreno estabilizado según la invención comprende una superficie de base en la que se fijan las fibras esencialmente verticales de modo que se forme un soporte de tipo tapiz. Una capa inferior de material granulado reposa sobre la superficie de base y se reparte entre las fibras, siendo la altura de dicha capa inferior menor que la de dichas fibras. Según un aspecto importante de la invención, se dispone una capa superior constituida sustancialmente por roca molida sobre la capa inferior. La altura de la capa superior en roca molida es tal, que su superficie superior se encuentra a un nivel superior al del extremo superior de las fibras.A stabilized terrain according to the invention it comprises a base surface on which the fibers are fixed essentially vertical so that a type support is formed tapestry. A bottom layer of granulated material rests on the base surface and is distributed between the fibers, the height being of said lower layer smaller than that of said fibers. According to a important aspect of the invention, an upper layer is provided consisting substantially of ground rock on the bottom layer. The height of the top layer in ground rock is such that its upper surface is at a level higher than the end Superior fiber.

En primer lugar, se apreciará que con dicho terreno estabilizado el desgaste de las fibras del tapiz no tiene lugar. Así, la superficie del terreno estabilizado, es decir, la superficie superior de la capa superior de roca molida, se encuentra debajo de las fibras. El tapiz formado por la superficie de base de fibras constituye una armadura para la parte inferior de la capa superior, permitiendo la estabilización y el drenaje. Por otra parte, la roca molida presenta una masa específica superior a la del ladrillo molido, así como una mayor duración. En la práctica, no resulta necesario regar la roca molida tan a menudo como el ladrillo molido, y el principal mantenimiento regular necesario para el terreno estabilizado según la invención es la colocación de una malla de arrastre. Con el paso del tiempo, la roca molida se degrada mucho más lentamente que el ladrillo molido y el terreno sigue conservando una capa superior con una buena porosidad. Así, se puede utilizar el terreno rápidamente después de fuertes lluvias y no hay peligro de deterioro debido al hielo.First, it will be appreciated that with said stabilized ground wear of tapestry fibers has no place. Thus, the stabilized land surface, that is, the upper surface of the top layer of ground rock, it found under the fibers. The tapestry formed by the surface fiber base constitutes a reinforcement for the bottom of the upper layer, allowing stabilization and drainage. By On the other hand, the ground rock has a specific mass greater than that of ground brick, as well as a longer duration. In the practice, it is not necessary to water the ground rock so often like ground brick, and the main regular maintenance necessary for the stabilized terrain according to the invention is the placement of a drag mesh. With the passage of time, the ground rock degrades much more slowly than ground brick and the terrain still retains a top layer with a good porosity. Thus, the terrain can be used quickly after heavy rains and no danger of deterioration due to ice.

Se deberá observar que el terreno estabilizado según la invención ofrece una superficie de calidad que permite especialmente la práctica del tenis, así como de deportes como el fútbol, el béisbol, el atletismo, u otros. Obviamente, el terreno tendrá una superficie adaptada a su utilización, y se deberán instalar las líneas de juego reglamentarias. El presenta terreno se puede realizar igualmente en forma de banda, eventualmente sinuosa, para servir, por ejemplo, de camino de acceso a una propiedad privada.It should be noted that the stabilized terrain according to the invention it offers a quality surface that allows especially the practice of tennis, as well as sports such as Soccer, baseball, athletics, or others. Obviously the terrain It will have a surface adapted to its use, and should be install the regulatory game lines. He presents land it can also perform in the form of a band, possibly sinuous, to serve, for example, as a path to access a property private

Además de que el terreno según la invención se pueda utilizar con cualquier clima y durante todo el año, también se podrá adaptar al entorno en el que se deba integrar. Así, al contrario que el ladrillo molido, el color de la roca molida varía dependiendo de su origen, lo que permite realizar un terreno de un color adaptado a su entorno. Por ejemplo, se podrá utilizar una roca con una apariencia verde para realizar un terreno estabilizado en un parque. Igualmente, se observará que se puede utilizar una roca molida de color claro para obtener una mayor luminosidad, mejorando de este modo las condiciones de juego cuando oscurece.In addition to the terrain according to the invention being can use with any weather and throughout the year, too It can be adapted to the environment in which it should be integrated. So, at contrary to ground brick, the color of the ground rock varies depending on its origin, which allows to realize a land of a Color adapted to your surroundings. For example, you can use a rock with a green appearance to make a stabilized terrain in a park. Likewise, it will be noted that a light-colored ground rock for greater luminosity, thus improving the game conditions when it gets dark.

Preferentemente, la roca molida es una roca dura, como por ejemplo la arenisca, u otra roca dura que no se deteriore con el hielo. La roca molida de la capa superior presenta ventajosamente una composición granulométrica comprendida entre 0 y 2 mm. De este modo, se consigue un buen equilibrio entre la calidad de la superficie y la porosidad de la capa superior. En la práctica, se utilizará preferentemente una capa superior de roca molida que presente una composición granulométrica continua comprendida entre 0 y 2 mm, con una mayoría de granos de composición granulométrica inferiores a 1 mm. Dicho de otro modo, la capa superior en roca molida comprenderá una mezcla de granos de composición granulométrica que podrá estar comprendida entre 0 y 2 mm, con una mayoría de granos que presentarán una composición granulométrica comprendida entre 0 y 1 mm. Para limitar la existencia de polvo, la proporción de roca molida con una composición granulométrica comprendida entre 0 y 0,2 mm preferentemente deberá ser inferior al 20%.Preferably, the ground rock is a hard rock, such as sandstone, or other hard rock that does not deteriorate With the ice The ground rock of the upper layer presents advantageously a granulometric composition between 0 and 2 mm In this way, a good balance between quality is achieved of the surface and the porosity of the top layer. In the practical, a top layer of rock will preferably be used ground that has a continuous granulometric composition between 0 and 2 mm, with a majority of grains of granulometric composition less than 1 mm. In other words, the top layer in ground rock will comprise a mixture of grains of granulometric composition that may be between 0 and 2 mm, with a majority of grains that will have a composition particle size between 0 and 1 mm. To limit the existence of dust, the proportion of ground rock with a granulometric composition between 0 and 0.2 mm preferably it should be less than 20%.

Ventajosamente, la altura de la capa superior es tal, que su superficie superior se encuentra comprendida entre 0,5 y 1,5 cm por debajo del extremo superior de las fibras, preferentemente 1 cm. La capa superior puede tener una masa superficial comprendida entre 14 y 20 kg/m^{2}, preferentemente, 16 kg/m^{2}.Advantageously, the height of the top layer is such that its upper surface is between 0.5 and 1.5 cm below the upper end of the fibers, preferably 1 cm. The top layer can have a mass surface area between 14 and 20 kg / m2, preferably 16 kg / m2.

Según una primera forma de realización, la capa inferior está constituida sustancialmente de arena, cuya composición granulométrica se selecciona de manera que la capa inferior presente una porosidad superior a la de la capa superior en roca molida. Aquí, se prestará especial atención para que la composición granulométrica sea regular y precisa, para limitar la proporción de elementos finos, así como para garantizar un buen drenaje. Dado que la roca molida presenta una composición granulométrica continua comprendida entre 0 y 2 mm, se utiliza preferentemente una arena con una composición granulométrica comprendida entre 1 y 1,5 mm.According to a first embodiment, the layer lower is substantially made of sand, whose composition granulometric is selected so that the bottom layer present a porosity higher than that of the top layer in rock ground. Here, special attention will be given to make the composition granulometric be regular and accurate, to limit the proportion of fine elements, as well as to ensure good drainage. Given the the ground rock has a continuous granulometric composition between 0 and 2 mm, a sand is preferably used with a granulometric composition between 1 and 1.5 mm.

Según una segunda forma de realización, la capa inferior está constituida sustancialmente por una primera subcapa de arena que presenta una composición granulométrica comprendida entre 1 y 1,5 mm y que descansa sobre la superficie de base, y de una segunda capa de arena que presenta una composición granulométrica comprendida entre 0,5 y 1 mm y que reposa sobre la primera subcapa. Dicha primera subcapa permite una buena penetración en el tapiz y la segunda subcapa forma una buena base para la capa superior. Se deberá observar que la segunda subcapa podría ser también de roca molida con una composición granulométrica comprendida entre 1 y 1,5 mm.According to a second embodiment, the layer lower is substantially constituted by a first sublayer of sand presenting a granulometric composition comprised between 1 and 1.5 mm and resting on the base surface, and of a second layer of sand that has a composition granulometric between 0.5 and 1 mm and resting on the First sublayer Said first sublayer allows a good penetration in the tapestry and the second sublayer forms a good base for the layer higher. It should be noted that the second sublayer could be also of ground rock with a granulometric composition between 1 and 1.5 mm.

Según otra forma de realización, la capa inferior está constituida esencialmente por roca molida, cuya composición granulométrica se selecciona de manera que la capa inferior presente una porosidad superior a la de la capa superior de roca molida. Así, para la capa inferior se utilizará preferentemente roca molida con una composición granulométrica comprendida entre 1 y 2 mm.According to another embodiment, the bottom layer It consists essentially of ground rock, whose composition granulometric is selected so that the lower layer is present a porosity higher than that of the top layer of ground rock. Thus, ground rock will preferably be used for the lower layer with a granulometric composition between 1 and 2 mm.

La superficie de base y las fibras que forman el soporte de tipo tapiz preferentemente estarán realizadas en material sintético. Las fibras del tapiz ventajosamente presentan una altura comprendida entre 10 y 25 mm, preferentemente entre 20 y 23 mm, para asegurar una buena estabilidad vertical. Además, la superficie de base ventajosamente es permeable, con el fin de permitir un drenaje directo del agua que atraviese el terreno hacia una estructura drenante subyacente.The base surface and the fibers that form the tapestry type support will preferably be made in synthetic material. The tapestry fibers advantageously present a height between 10 and 25 mm, preferably between 20 and 23 mm, to ensure good vertical stability. Besides, the base surface is advantageously permeable, in order to allow direct drainage of water that crosses the ground to an underlying draining structure.

Preferentemente, la altura de la capa inferior representa entre el 80% y el 90% de la altura de las fibras.Preferably, the height of the lower layer It represents between 80% and 90% of the fiber height.

En otra forma de realización, las fibras del tapiz presentan una altura comprendida entre 4 y 12 mm, preferentemente 6 mm. Así, las capas inferior y superior pueden estar formadas por una roca molida de la misma composición granulométrica, comprendidas por ejemplo en el intervalo de 0 a 2 mm. Un terreno de este tipo ofrece unas buenas cualidades de juego con un coste de realización modesto.In another embodiment, the fibers of the tapestry have a height between 4 and 12 mm, preferably 6 mm. Thus, the lower and upper layers can be formed by a ground rock of the same composition granulometric, for example in the range of 0 to 2 mm Such a terrain offers good playing qualities with a modest cost of realization.

De acuerdo con otro aspecto de la invención, se propone un método de fabricación de un terreno estabilizado según la reivindicación 16, en particular para la práctica del tenis, en el que se coloca un soporte del tipo tapiz sobre una estructura fondo, estando dicho soporte del tipo tapiz formado por una superficie de base a la que se fijan las fibras esencialmente verticales. A continuación, se forma sobre la superficie de base una capa inferior en material granulado repartido entre las fibras, siendo la altura de la capa inferior menor que la de las fibras. Se observará que seguidamente se forma sobre la capa inferior una capa superior constituida esencialmente en roca molida, siendo la altura de dicha capa superior tal, que la superficie superior se encuentre a un nivel superior al del extremo superior de las fibras.In accordance with another aspect of the invention, proposes a method of manufacturing a stabilized land according to claim 16, in particular for the practice of tennis, in which is placed a support of the tapestry type on a structure bottom, said tapestry support being formed by a base surface to which the fibers are essentially fixed vertical It is then formed on the base surface a bottom layer in granulated material distributed between the fibers, the height of the lower layer being less than that of the fibers. Be you will notice that a layer is then formed on the lower layer upper consisting essentially of ground rock, the height being of said upper layer such that the upper surface is at a level higher than the upper end of the fibers.

Así, el presente método permite realizar fácilmente un terreno estabilizado que se puede utilizar con cualquier clima y que requiere muy poco mantenimiento. La estructura de fondo, es decir, la estructura provista del soporte de tipo tapiz, preferentemente presenta propiedades drenantes, lo que permite eliminar directamente el agua que se filtre a través del terreno, ya que la superficie de base es permeable. Una estructura de fondo de este tipo comprende, por ejemplo, una capa denominada reabsorbente que presenta propiedades absorbentes, sobre la que reposa el tapiz. Un fondo, dispuesto debajo de la capa reabsorbente, permite la evacuación de la humedad de dicha capa.Thus, the present method allows to perform Easily stabilized terrain that can be used with any weather and that requires very little maintenance. The background structure, that is, the structure provided with the support tapestry type, preferably has draining properties, which which allows to directly eliminate the water that seeps through of the ground, since the base surface is permeable. A background structure of this type comprises, for example, a layer denominated reabsorbent that presents absorbent properties, on the one that rests the tapestry. A bottom, arranged under the layer reabsorbent, allows the evacuation of moisture from said cap.

Por otra parte, se deberá observar que el presente método de fabricación permite también la fabricación de un terreno estabilizado sobre una estructura de fondo construida en hormigón, especialmente una antigua pista de tenis de hormigón. En dicho caso, se dispone el tapiz sobre la superficie de hormigón existente, que preferentemente se habrá aplanado y reparado. También se puede transformar una pista de tenis dura y usada en un terreno estabilizado que presente una gran comodidad para el juego.On the other hand, it should be noted that the This manufacturing method also allows the manufacture of a stabilized land on a background structure built in concrete, especially an old concrete tennis court. In said case, the tapestry is arranged on the concrete surface existing, which will preferably have been flattened and repaired. You can also transform a hard and used tennis court into a stabilized terrain that presents great comfort for the game.

Con el fin de mejorar el drenaje en la parte inferior del terreno estabilizado, ventajosamente, se forma una capa inferior en la que el material granulado presente una composición granulométrica seleccionada de manera que la capa inferior presente una porosidad superior a la de la capa superior en roca molida.In order to improve drainage in the part bottom of the stabilized terrain, advantageously, a lower layer in which the granulated material has a granulometric composition selected so that the layer lower present a porosity higher than that of the upper layer in ground rock

Según otro aspecto de la invención, se propone un método de renovación de un terreno estabilizado de acuerdo con la reivindicación 19, particularmente de un terreno de tenis estabilizado, que comprende un soporte del tipo tapiz formado por una superficie de base a la que se fijan las fibras esencialmente verticales, presentando dicho soporte del tipo tapiz una capa inferior en material granulado que reposa sobre la superficie de base y que presenta una altura inferior a la altura de las fibras. Se observará que se forma sobre la capa inferior una capa superior constituida sustancialmente en roca molida, siendo la altura de dicha capa superior tal que su superficie superior se encuentre a un nivel superior al del extremo superior de las fibras.According to another aspect of the invention, a method of renovation of a stabilized land in accordance with the claim 19, particularly of a tennis court stabilized, comprising a support of the tapestry type formed by a base surface to which the fibers are essentially fixed vertical, said tapestry support having a layer bottom in granulated material that rests on the surface of base and that has a height less than the height of the fibers. It will be noted that an upper layer is formed on the lower layer constituted substantially in ground rock, the height of said upper layer such that its upper surface is at a level higher than the upper end of the fibers.

Así, el presente método de renovación permite restablecer diversos terrenos estabilizados del tipo de césped sintético con arena, como por ejemplo el "French Court". Como la capa superior de roca molida es densa y está formada esencialmente sobre la fibra, se pueden eliminar los defectos de planicie puntuales (agujeros en el tapiz) o que se extiendan sobre toda la superficie del terreno que se va a renovar (desniveles de la estructura de fondo).Thus, the present renewal method allows restore various stabilized lands of the lawn type synthetic with sand, such as the "French Court". How The top layer of ground rock is dense and formed essentially on the fiber, the defects of flat point (holes in the tapestry) or that extend over the entire surface of the land to be renovated (unevenness of the background structure).

Description with the help of the figures

Se podrán observar otras particularidades y características a partir de la descripción detallada de una forma de realización ventajosa que se indica a continuación, a título de ejemplo, haciendo referencia a los dibujos adjuntos que muestran:Other peculiarities and characteristics from the detailed description of a form of advantageous embodiment indicated below, by way of example, referring to the attached drawings that show:

Figura 1 muestra una vista en perspectiva de un terreno estabilizado según la invención, adaptado a la práctica del tenis;Figure 1 shows a perspective view of a stabilized terrain according to the invention, adapted to the practice of tennis;

Figura 2 muestra una vista parcial seccionada del terreno estabilizado de la Figura 1.Figure 2 shows a partial sectional view of the stabilized terrain of Figure 1.

La Figura 1 muestra en perspectiva un terreno estabilizado 10 según la presente invención, adaptado para pista de tenis. La superficie del terreno 12 está marcada por las líneas de juego 14 que delimitan las superficies de juego en "individual" y "doble". Una red 16 que se mantiene mediante los postes 18 separa la pista del modo conocido.Figure 1 shows in perspective a terrain stabilized 10 according to the present invention, adapted for runway tennis. The surface of the land 12 is marked by the lines of game 14 that delimit the playing surfaces in "single" and "double". A network 16 that is maintained by means of posts 18 separate the track in the known way.

En la Figura 2 se representa una vista parcial seccionada del terreno 10 que comprende un soporte del tipo tapiz 20 dispuesto sobre una estructura de fondo 22 provista de propiedades drenantes. Dicho soporte del tipo tapiz 20 está formado por una superficie de base 24 constituida por un soporte en tela impregnado de una capa de látex, a la que se fijan por medio de técnicas clásicas de inserción de las fibras 26 esencialmente verticales. Dichas fibras 26, que presentan una altura de 20 mm, pueden ser por ejemplo en polipropileno o en poliamida. La superficie de base 24 está perforada con el fin de presentar un drenaje adecuado. El terreno estabilizado 10 comprende una capa inferior 28 que reposa sobre la superficie de base 24, constituida sustancialmente de arena de una composición granulométrica de 1 a 1,5 mm. La altura de dicha capa inferior 28 es de 17 mm, es decir, que su altura es inferior a la de las fibras 26. Se observará que sobre la capa inferior 28 reposa una capa superior 30 construida en roca molida que preferentemente presenta una composición granulométrica continua de 0 a 2 mm. Dicha capa superior 30 presenta un espesor de 1 cm. Por lo tanto, recubre los extremos superiores de las fibras 26, es decir, los 3 últimos milímetros, y forma una sobrecapa debajo del tapiz 20. Así, la superficie de juego 12 del terreno estabilizado 10 está formada por la superficie superior de la capa superior 30 y, por lo tanto, se encuentra a un nivel superior al de las fibras 26.A partial view is shown in Figure 2 section of the land 10 comprising a support of the tapestry type 20 arranged on a bottom structure 22 provided with draining properties Said support of the tapestry type 20 is formed by a base surface 24 constituted by a fabric support impregnated with a layer of latex, to which they are fixed by means of classical fiber insertion techniques 26 essentially vertical Said fibers 26, having a height of 20 mm, they can be for example in polypropylene or in polyamide. The base surface 24 is perforated in order to present a adequate drainage The stabilized terrain 10 comprises a layer lower 28 resting on the base surface 24, constituted substantially of sand of a granulometric composition of 1 to 1.5 mm The height of said lower layer 28 is 17 mm, that is, that its height is less than that of fibers 26. It will be noted that on the lower layer 28 rests an upper layer 30 constructed in ground rock that preferably has a composition Continuous particle size from 0 to 2 mm. Said top layer 30 It has a thickness of 1 cm. Therefore, cover the ends upper fibers 26, that is, the last 3 millimeters, and it forms an overlayer under tapestry 20. Thus, the surface of set 12 of the stabilized terrain 10 is formed by the surface upper of the upper layer 30 and therefore is at a higher level than fibers 26.

Dado que las fibras 26 están ocultas bajo un espesor de roca molida, no se utilizan, lo cual representa una ventaja apreciable con respecto al "French Court" descrito en la patente EP-B-0 683 836, en la que las fibras afloran a la superficie del ladrillo molido, por lo que sufren un desgaste. Además, la roca molida que posee una masa específica más elevada que la del ladrillo molido, precisa poco mantenimiento, no se levanta con el viento y no precisa regenerarse. Su dureza permite obtener una capa superior 30 resistente y que mantiene su porosidad y su regularidad superficial. Así, no habrá agua estancada sobre la pista. Gracias a la buena porosidad de la capa superior 30, el agua se filtra directamente en la parte inferior del tapiz 20 y pasa a la estructura de fondo 22. El terreno 10 no sufre riesgo de daños debidos al hielo.Since the fibers 26 are hidden under a thickness of ground rock, not used, which represents a appreciable advantage over the "French Court" described in EP-B-0 683 836, in which the fibers emerge to the surface of the ground brick, so They suffer wear. In addition, the ground rock that has a mass specific higher than ground brick, requires little maintenance, does not rise with the wind and does not require regenerate Its hardness allows to obtain a top layer 30 resistant and that maintains its porosity and its regularity superficial. Thus, there will be no standing water on the track. Thanks to the good porosity of the upper layer 30, the water is filtered directly at the bottom of tapestry 20 and go to the background structure 22. Land 10 is not at risk of damage due to ice.

El confort de juego que ofrece el terreno estabilizado 10 según la invención es equivalente al de una pista de tenis tradicional, protegiendo los músculos y las articulaciones. Además, las cualidades de rebote de la pelota son excelentes y la superficie de juego 12 es rápida.The game comfort offered by the terrain stabilized 10 according to the invention is equivalent to that of a track of traditional tennis, protecting muscles and joints. In addition, the bouncing qualities of the ball are excellent and the playing surface 12 is fast.

Claims

1. Stabilized land, particularly for tennis practice, which includes:

a base surface (24) to which the essentially vertical fibers (26) so that they form a tapestry support (20); Y

a bottom layer (28) of granulated material that rests on said base surface (24) and distributed between said fibers (26), the height of said lower layer (28) being lower than said fibers (26);

characterized because

an upper layer (30) constituted substantially ground rock rests on said lower layer (28), the height of said upper layer (30) being such that its upper surface is at a level higher than the end upper of said fibers (26).

2. Stabilized land according to claim 1, characterized in that the height of said upper layer (30) is such that its upper surface is between 0.5 and 1.5 cm below the upper end of said fibers (26), preferably 1 cm.

3. Stabilized ground according to claim 1 or 2, characterized in that said lower layer (28) is substantially constituted of sand having a selected granulometric composition such that said lower layer (28) has a porosity greater than that of said upper layer (30) in ground rock, the granulometric composition of said sand being preferably of the order of 1 to 1.5 mm.

4. Stabilized land according to claim 1 or 2, characterized in that said lower layer (28) is substantially constituted by a first sand sub-layer having a granulometric composition comprised between 1 and 1.5 mm and a second sand sub-layer having a granulometric composition between 0.5 and 1 mm.

5. Stabilized land according to claim 1 or 2, characterized in that said lower layer (28) is substantially constituted by a first sand sub-layer having a granulometric composition comprised between 1 and 1.5 mm and a second ground rock sub-layer which It has a granulometric composition between 1 and 1.5 mm.

6. Stabilized land according to claim 1 or 2, characterized in that said lower layer (28) is substantially constituted by ground rock having a selected granulometric composition such that said lower layer (28) has a porosity greater than that of said layer upper (30) in ground rock.

7. Stabilized soil according to claim 6, characterized in that the ground rock of said lower layer (28) has a granulometric composition between 1 and 2 mm.

8. Stabilized terrain according to any of the preceding claims, characterized in that said fibers (26) have a height between 10 and 25 mm, preferably between 20 and 23 mm.

9. Stabilized land according to any of the preceding claims, characterized in that the height of said lower layer (28) represents between 80% and 90% of the height of said fibers (26).

10. Stabilized terrain according to claim 1 or 2, characterized in that said fibers (26) have a height between 4 and 12 mm, preferably of the order of 6 mm; and because said lower layer (28) is a layer of ground rock having the same granulometric composition as said upper layer (30).

11. Stabilized soil according to any of the preceding claims, characterized in that the ground rock of said upper layer has a granulometric composition between 0 and 2 mm.

12. Stabilized land according to any of the preceding claims, characterized in that said upper layer (30) has a mass with respect to the surface between 14 and 20 kg / m2, preferably 16 kg / m2 .

13. Stabilized soil according to any of the preceding claims, characterized in that the ground rock is a hard rock such as sandstone.

14. Stabilized terrain according to any of the preceding claims, characterized in that said tapestry structure (20) is made of synthetic material, and that said base surface (24) is permeable.

15. Stabilized terrain according to any of the preceding claims, characterized in that said tapestry-type support (20) rests on a bottom structure comprising a layer of resorbant material with absorbent properties.

16. Method of manufacturing a land stabilized, in particular for the practice of tennis, which It comprises the following stages:

place a tapestry type support formed by a base surface to which fibers are essentially fixed vertical, on a background structure;

form a layer on said base surface bottom of granulated material distributed between said fibers, the height of said lower layer being less than that of said fibers;

characterized because

a layer is formed on said lower layer superior constituted substantially by ground rock, being the height of said upper layer such that its upper surface is is at a level higher than the upper end of said fibers

17. Method of manufacture according to claim 16, characterized in that said granulated material of said lower layer has a selected granulometric composition such that said lower layer has a porosity greater than that of said upper layer in ground rock.

18. Manufacturing method according to claims 16 or 17, characterized in that said bottom structure comprises a layer of resorbant material provided with absorbent properties.

19. Method of renovation of a stabilized ground, particularly of a stabilized tennis ground, comprising a tapestry type support formed by a base surface to which the substantially vertical fibers are fixed, said tapestry type support having a lower layer in granulated material resting on said base surface, distributed between said fibers, and having a height less than the height of said fibers, characterized in that an upper layer consisting substantially of ground rock is formed on said lower layer, the height of which is said upper layer such that its upper surface is at a level higher than the upper end of said fibers.