Hydraulic mat

Abstract

To provide a hydraulic mat which has a simple configuration and can be easily manufactured.SOLUTION: A hydraulic mat 1 includes a first sheet-like member 3 configured to permeate water, a second sheet-like member 4 provided so as to face the first sheet-like member 3, and a plurality of filler packs 5 which include powdery fillers 5a cured when water is imparted thereto, and bag bodies 5b encapsulating the fillers 5a, and are arranged between the first sheet-like member 3 and the second sheet-like member 4, wherein each of the bag bodies 5b of the plurality of filler packs 5 has water solubility, and a plurality of forms 7 for storing each of the plurality of filler packs 5 are formed between the first sheet-like member 3 and the second sheet-like member 4.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a hydraulic mat that is flexible and hardens when water is applied thereto. [Background technology]

[0002] Conventionally, flexible mats filled with hydraulic filler, typically concrete (hereinafter referred to as "concrete mats") have been known. This concrete mat can be easily formed into a concrete surface by laying it in a predetermined position and adding water (sprinkling). For example, concrete mats are used for weed control works on road and railway slopes, weed control works around structures, sandbag covering works, general slope protection, etc.

[0003] This type of technology is disclosed, for example, in Patent Document 1. Patent Document 1 describes a flexible composite material that can be hardened into a solid, the flexible composite material having a first layer, a second layer separated from the first layer by a space, a powder filler material (such as concrete) that can be hardened into a solid and disposed between the first layer and the second layer, and a plurality of connecting elements that extend into the space between the first layer and the second layer and connect the first and second layers, and the powder filler material can be transported in an unhardened state within the space. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 7300176 Summary of the Invention [Problem to be solved by the invention]

[0005] In the flexible composite material described in the above Patent Document 1, a plurality of connecting elements provided between a first layer and a second layer are formed under a pressure (tension) that causes the first and second layers between the connecting elements to swell outward. For example, such connecting elements are formed by needle punching. In this case, a powder filler material is filled into the space under a pressure that causes tension to be applied to the connecting elements formed by needle punching, thereby causing the first and second layers to swell outward between adjacent connecting elements. Such a flexible composite material described in Patent Document 1 has a complex structure and tends to be laborious to manufacture.

[0006] Therefore, the present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a hydraulic mat that has a simple structure and can be easily manufactured. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the present invention provides a hydraulic mat that is flexible and hardens when water is applied, comprising a first sheet-like member configured to be water permeable, a second sheet-like member provided opposite the first sheet-like member, a powdered filler that hardens when water is applied, and a plurality of filler packs including a bag body that encapsulates the filler and that are arranged between the first sheet-like member and the second sheet-like member, each of the bags of the plurality of filler packs being water-soluble, and a plurality of forms for accommodating each of the plurality of filler packs being formed between the first sheet-like member and the second sheet-like member.

[0008] The hydraulic mat according to the present invention is constructed by housing a plurality of filler packs containing a powdered filler in a plurality of forms formed between a first sheet-like member and a second sheet-like member. The filler packs have a bag body that encloses the filler and is water-soluble. Therefore, when water is applied to the hydraulic mat, the water enters the formwork through the first sheet-like member, the bag body of the filler pack housed in the formwork dissolves, and the filler comes out of the bag body. Then, after the formwork is filled with the filler, the filler hardens, and finally a hardened surface (e.g., a concrete surface) is formed by the hydraulic mat. Here, a filler pack can be made by sealing the filler in a bag, a formwork can be made by dividing the space between the first sheet-like member and the second sheet-like member so as to accommodate such a filler pack, and a hydraulic mat can be made by inserting the filler pack into the formwork thus made. Therefore, the hydraulic mat according to the present invention has a simpler structure and can be easily manufactured compared to the hydraulic mat described in the above Patent Document 1 (hereinafter referred to as the "hydraulic mat according to the comparative example" as appropriate).

[0009] In the present invention, it is preferable that the device further includes connecting members that are connected to each of the first sheet-like member and the second sheet-like member and extend so as to divide the space between these sheet-like members to form multiple formworks. According to the present invention configured in this manner, multiple formworks are formed between the sheet-like members by the added connecting members, so that it is possible to make the thickness of the entire hydraulic mat closer to uniform, in other words, it is possible to improve the uniformity of the thickness of the hydraulic mat, compared to the case where multiple formworks are formed, for example, by partially connecting (joining) the first and second sheet-like members.

[0010] In the present invention, the connecting member is preferably configured to have a gap, so that when water is applied to multiple filler packs, the filler that melts and comes out of the bag can move between adjacent formworks via the connecting member. According to the present invention configured in this manner, by adding water to the filler pack, the filler that has dissolved and come out of the bag can be moved between adjacent formwork through the gaps in the connecting members, thereby further improving the uniformity of the thickness of the hydraulic mat and improving the ability of the hydraulic mat to conform to unevenness in the ground.

[0011] In the present invention, the connecting member is preferably connected to each of the first sheet-like member and the second sheet-like member so as to extend in a zigzag pattern between the first sheet-like member and the second sheet-like member when viewed in a cross section of the hydraulic mat cut along the thickness direction. According to the present invention configured in this manner, for example, by providing a sheet-like connecting member so that it extends in a zigzag pattern between two sheet-like members, formwork that is horizontally adjacent to the hydraulic mat can be arranged so that they partially overlap in the thickness direction (up and down direction) (staggered arrangement), making it possible to further improve the uniformity of the thickness of the hydraulic mat.

[0012] In the present invention, the filler preferably includes at least mortar. According to the present invention thus configured, since a filler containing lightweight mortar is used, the hydraulic mat can be made lighter than when only ordinary cement is used as a filler, which reduces the labor required for small-scale transportation of the hydraulic mat and allows the overall length of the hydraulic mat to be increased without increasing its weight.

[0013] In the present invention, the plurality of formworks preferably include a plurality of formworks arranged along one horizontal direction of the hydraulic mat and along another direction perpendicular to the horizontal direction. According to the present invention thus configured, the filler pack can be provided over the entire hydraulic mat.

[0014] In a preferred embodiment of the present invention, the first sheet-like member and the second sheet-like member are made of woven or knitted chemical fibers. Effect of the Invention

[0015] The hydraulic mat according to the present invention has a simple structure and can be easily manufactured. [Brief description of the drawings]

[0016] [Figure 1] FIG. 1 is a top view of a hydraulic mat according to a first embodiment of the present invention. [Diagram 2] 1 is a cross-sectional view of a hydraulic mat according to a first embodiment of the present invention. [Diagram 3] FIG. 2 is a perspective view showing a part of the hydraulic mat according to the first embodiment of the present invention as viewed from above, more specifically, a perspective view showing a state in which a filler pack is placed into a form formed in the hydraulic mat. [Figure 4] FIG. 2 is an explanatory diagram of one effect of the hydraulic mat according to the first embodiment of the present invention. [Diagram 5] FIG. 13 is an explanatory diagram of a problem with the hydraulic mat according to the comparative example. [Figure 6] FIG. 4 is a cross-sectional view of a hydraulic mat according to a second embodiment of the present invention. [Figure 7] FIG. 11 is a partially enlarged perspective view of a sheet-like member and a connecting member in a hydraulic mat according to a third embodiment of the present invention. [Figure 8] FIG. 4 is a cross-sectional view of a hydraulic mat according to a third embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, a hydraulic mat according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0018] [First embodiment] First, the hydraulic mat according to the first embodiment of the present invention will be described with reference to Fig. 1 to Fig. 3. Fig. 1 is a top view of the hydraulic mat according to the first embodiment. Fig. 2 is a cross-sectional view of the hydraulic mat according to the first embodiment taken along line II-II in Fig. 1. Fig. 3 is a perspective view of a part of the hydraulic mat according to the first embodiment seen from above, more specifically, a perspective view showing how a filler pack is placed in a formwork formed in the hydraulic mat.

[0019] As shown in Fig. 1 and Fig. 2, the hydraulic mat 1 mainly includes a first sheet-like member 3 configured to be water-permeable, a second sheet-like member 4 provided opposite the first sheet-like member 3, and a plurality of filler packs 5 disposed between the first sheet-like member 3 and the second sheet-like member 4. In one example, the second sheet-like member 4 is configured to be water-permeable, similar to the first sheet-like member 3. However, the second sheet-like member 4 is not limited to being configured to be water-permeable, and in another example, the second sheet-like member 4 may be configured to be water-impermeable, i.e., waterproof.

[0020] The hydraulic mat 1 is a flexible mat (concrete mat) filled with concrete, and can be laid in a predetermined position and watered (sprinkled) to easily form a concrete surface. For example, the hydraulic mat 1 is used for weed control works on road and railway slopes, weed control works around structures, sandbag covering works, and general slope protection. The hydraulic mat 1 is also distributed in a rolled state. For example, the rolled mat is packed and distributed.

[0021] In this specification, "water" includes not only tap water, but also water from rivers and ponds, and seawater. In rivers, ponds, and seaside sites, these waters can be used for construction of the hydraulic mat 1. In addition, the hydraulic mat 1 is not limited to being sprayed with water, and spraying of water is not necessary when constructing the hydraulic mat 1 underwater.

[0022] The first sheet-like member 3 and the second sheet-like member 4 (hereinafter, when there is no need to distinguish between them, they will be referred to as "sheet-like members 3, 4" as appropriate) are made of woven or knitted fabrics made of various chemical fibers such as polyester and nylon, that is, cloth made by interweaving or knitting chemical fibers, and have flexibility. When the hydraulic mat 1 is laid to form the above-mentioned concrete surface, the hydraulic mat 1 is arranged so that the first sheet-like member 3 is located on the front side and the second sheet-like member 4 is located on the back side. For example, the hydraulic mat 1 formed by the sheet-like members 3 and 4 has a horizontal length (width) of about 1 m, a vertical length (roll length) of about 5 m, a thickness direction (height direction) of about 1 cm, and an overall weight of about 50 kg. In FIG. 1, the horizontal direction is one horizontal direction of the hydraulic mat 1, and the vertical direction is the other direction perpendicular to this horizontal direction (horizontal direction).

[0023] The filler pack 5 includes a dry powdered filler 5a and a bag 5b enclosing the filler 5a. The filler 5a is made of ordinary cement (including, for example, Portland cement) or mortar. In particular, the bag 5b is made of water-dissolvable paper that is water-soluble (water-soluble / water-resolvable). For example, one filler pack 5 is about 10 cm long in the horizontal direction, about 50 cm long in the vertical direction, and about 1 cm long in the thickness direction.

[0024] As shown in Figures 2 and 3, the multiple filler packs 5 are housed in multiple molds 7 formed between the first sheet-like member 3 and the second sheet-like member 4. The molds 7 correspond to rooms formed by dividing the space between the first sheet-like member 3 and the second sheet-like member 4 by partially directly connecting (joining) the first sheet-like member 3 and the second sheet-like member 4, for example by interweaving the fibers. In Figures 1 to 3, reference numeral 8 indicates a connecting portion between the first sheet-like member 3 and the second sheet-like member 4. When water is applied to the hydraulic mat 1, the water enters the formwork 7 through the first sheet-like member 3, dissolves the bag 5b of the filler pack 5 contained in the formwork 7, and the filler 5a comes out of the bag 5b. After the formwork 7 is filled with the filler 5a, the filler 5a hardens, and finally a concrete surface is formed by the hydraulic mat 1.

[0025] 1, a plurality of formworks 7 are formed along both the horizontal and vertical directions of the hydraulic mat 1. This allows a plurality of filler packs 5 to be arranged along both the horizontal and vertical directions of the hydraulic mat 1, that is, the filler packs 5 are provided over the entire hydraulic mat 1.

[0026] 3, the form 7 is formed in the shape of a tunnel extending vertically, and one end in the vertical direction is open during the manufacturing process of the hydraulic mat 1 (the stage before the filler pack 5 is accommodated). The filler pack 5 is inserted from the open end (opening) of the form 7, and after this insertion, the opening is joined (glued, etc.), thereby sealing the filler pack 5 within the form 7. Each form 7 is formed in a size that can accommodate one filler pack 5 without any gaps.

[0027] Next, the action and effect of the hydraulic mat 1 according to the first embodiment will be described. As described above, the hydraulic mat 1 according to the first embodiment includes a first sheet-like member 3 configured to be permeable to water, a second sheet-like member 4 provided opposite the first sheet-like member 3, a powdered filler 5a that hardens when water is applied, and a bag body 5b that encloses the filler 5a, and a plurality of filler packs 5 that are respectively arranged between the first sheet-like member 3 and the second sheet-like member 4, each bag body 5b of the plurality of filler packs 5 being water-soluble, and a plurality of forms 7 for accommodating the plurality of filler packs 5 are formed between the first sheet-like member 3 and the second sheet-like member 4.

[0028] Such a hydraulic mat 1 is constructed by housing a plurality of filler packs 5, each containing a powdered filler 5a, in a plurality of forms 7 formed between a first sheet-like member 3 and a second sheet-like member 4. The filler packs 5 can be produced by sealing the filler 5a in a bag body 5b, and the forms 7 can be produced by partially connecting (joining) the first sheet-like member 3 and the second sheet-like member 4. The hydraulic mat 1 can be produced by inserting the filler packs 5 into the forms 7 produced in this way. Therefore, the hydraulic mat 1 according to the first embodiment has a simpler configuration and can be easily manufactured, compared to the hydraulic mat described in the above Patent Document 1 (the hydraulic mat according to the comparative example).

[0029] Moreover, the hydraulic mat 1 according to the first embodiment uses a filler 5a containing lightweight mortar. This allows the hydraulic mat 1 to be lighter in weight than when only ordinary cement is used as a filler. As a result, it is possible to reduce the labor required for small-scale transportation of the hydraulic mat 1 and to increase the length in the vertical direction (roll length) without increasing the weight of the hydraulic mat 1.

[0030] By adjusting the quality and composition of the cement applied to the filler 5a, it is possible to adjust the strength development time (in other words, the hardening time) of the hydraulic mat 1. For example, it is possible to create a hydraulic mat 1 that has a relatively long strength development time (one example is one that develops its strength about one day after watering). In such a case, even after laying the hydraulic mat 1 and watering it, the position of the hydraulic mat 1 can be adjusted as needed, which makes it possible to reduce the work of making the hydraulic mat 1 conform to the unevenness of the ground and the work of constructing the hydraulic mat 1 in the summer.

[0031] Next, further effects of the hydraulic mat 1 according to the first embodiment will be described with reference to Figs. 4 and 5. Fig. 4 is an explanatory diagram of one effect of the hydraulic mat 1 according to the first embodiment. Fig. 5 is an explanatory diagram of a problem with the hydraulic mat 1x according to the comparative example. Here, a case is considered in which the hydraulic mat 1 according to the first embodiment and the hydraulic mat 1x according to the comparative example are laid on a slope having a recess A1 to form a concrete surface. Note that the recess A1 is assumed to have a width and depth of about 30 to 50 cm.

[0032] As shown in Figures 4 and 5, the hydraulic mat 1 according to the first embodiment can accurately follow the depression A1 of the slope, whereas the hydraulic mat 1x according to the comparative example cannot accurately follow the depression A1 of the slope. In other words, as shown by arrows A2 and A3 in Figures 4 and 5, the hydraulic mat 1 according to the first embodiment has a smaller cavity between the mat and the ground at the depression A1 than the hydraulic mat 1x according to the comparative example. The reason for this is as follows.

[0033] First, the hydraulic mat 1 according to the first embodiment can bend at the boundaries between the vertically arranged filler packs 5, thereby accurately conforming to the depression A1 of the slope. In contrast, the hydraulic mat 1x according to the comparative example cannot bend at the boundaries between the vertically arranged filler packs 5, as in the first embodiment, and therefore can only use the flexibility of the hydraulic mat 1x itself when conforming to the depression A1. Therefore, the hydraulic mat 1x according to the comparative example cannot accurately conform to the depression A1 of the slope as in the first embodiment.

[0034] [Second embodiment] Next, a hydraulic mat according to a second embodiment of the present invention will be described with reference to Fig. 6. Fig. 6 is a cross-sectional view of the hydraulic mat according to the second embodiment. This cross-sectional view is a view of the hydraulic mat according to the second embodiment taken along a line corresponding to line II-II in Fig. 1 (i.e., a view cut along a plane extending in the lateral and thickness directions).

[0035] In addition, here, the description of the configuration, operation, and effect similar to those of the first embodiment will be omitted as appropriate. In other words, the configuration, operation, and effect whose description is omitted here are the same as those of the first embodiment.

[0036] As shown in FIG. 6, the hydraulic mat 1a according to the second embodiment is different in configuration from the hydraulic mat 1 according to the first embodiment in that it has a connecting member 9 provided between the first sheet-like member 3 and the second sheet-like member 4 and connected to each of these sheet-like members 3 and 4. Specifically, the connecting member 9 extends so as to divide the space between the sheet-like members 3 and 4, thereby forming a plurality of formworks 7. That is, in the first embodiment, the first sheet-like member 3 and the second sheet-like member 4 are directly connected (joined) at the connecting portion 8 to divide the space between these sheet-like members 3 and 4, thereby forming a plurality of formworks 7, whereas in the second embodiment, the connecting member 9 connected to each of the first sheet-like member 3 and the second sheet-like member 4 divides the space between these sheet-like members 3 and 4, thereby forming a plurality of formworks 7.

[0037] Specifically, the connecting member 9 is formed in a sheet shape and in a mesh shape (network shape) including gaps of, for example, about 5 mm. This allows the filler 5a that has come out of the melted bag body 5b when water is applied to the filler pack 5 (i.e., when water is sprayed on the hydraulic mat 1a) to move between adjacent forms 7 through the gaps in the connecting member 9. For example, the connecting member 9 is made by weaving various chemical fibers such as polyester and nylon into a net shape (network weaving). Also, for example, the connecting member 9 is sewn to each of the first sheet-like member 3 and the second sheet-like member 4.

[0038] 6, when viewed in a cross section of the hydraulic mat 1a cut along a plane extending in the horizontal and thickness directions, the connecting members 9 are connected to the first and second sheet-like members 3 and 4 so as to extend in a zigzag pattern between the first and second sheet-like members 3 and 4, in other words so as to extend continuously between the sheet-like members 3 and 4 in directions oblique to both the horizontal and thickness directions. As a result, the formwork 7 adjacent in the horizontal direction is arranged so as to partially overlap in the thickness direction (staggered arrangement).

[0039] Next, the action and effect of the hydraulic mat 1a according to the second embodiment will be described. As described above, the hydraulic mat 1a according to the second embodiment has a connecting member 9 that is connected to each of the first sheet-like member 3 and the second sheet-like member 4 and extends so as to divide the space between these sheet-like members 3 and 4 to form a plurality of forms 7. As is clear from Figs. 2 and 6, in the hydraulic mat 1a in which a plurality of forms 7 are formed between the sheet-like members 3 and 4 by such connecting members 9, it is possible to make the entire thickness closer to uniform, that is, to improve the uniformity of the thickness, than in the hydraulic mat 1 in which a plurality of forms 7 are formed by interweaving the fibers of the sheet-like members 3 and 4 as in the first embodiment. In other words, it is possible to reduce unevenness on the mat surface due to thickness variations.

[0040] In particular, according to the second embodiment, the connecting members 9 are formed in a mesh shape including gaps, so that the filler 5a that has been dissolved by adding water to the filler pack 5 and has come out of the bag body 5b can be moved between adjacent formworks 7 via the connecting members 9. For example, the surface of the hydraulic mat 1a can be adjusted by stepping on the water-sprayed hydraulic mat 1a with a foot to move the filler 5a appropriately between a plurality of formworks 7. This can further improve the uniformity of the thickness of the hydraulic mat 1a and can improve the ability of the hydraulic mat 1a to follow the unevenness of the ground.

[0041] Furthermore, according to the second embodiment, the connecting member 9 extends in a zigzag manner between the first sheet-like member 3 and the second sheet-like member 4, so that laterally adjacent formwork 7 can be arranged to partially overlap (staggered) in the thickness direction (up and down direction), making it possible to further improve the uniformity of the thickness of the hydraulic mat 1a.

[0042] [Third embodiment] Next, a hydraulic mat according to a third embodiment of the present invention will be described with reference to Fig. 7 and Fig. 8. Fig. 7 is a partially enlarged perspective view of a sheet-like member and a connecting member in the hydraulic mat according to the third embodiment. Fig. 8 is a cross-sectional view of the hydraulic mat according to the third embodiment. This cross-sectional view is a view of the hydraulic mat according to the third embodiment as viewed along a line corresponding to line II-II in Fig. 1 (i.e., a view cut along a plane extending in the lateral and thickness directions).

[0043] Here, the description of the configuration, operation, and effect similar to those of the first and second embodiments will be omitted as appropriate. In other words, the configuration, operation, and effect whose description is omitted here are the same as those of the first and second embodiments.

[0044] 7 and 8, like the hydraulic mat 1a according to the second embodiment, the hydraulic mat 1b according to the third embodiment has connecting members 10 provided between a first sheet-like member 3 and a second sheet-like member 4 and connected to each of these sheet-like members 3, 4. The connecting members 10 also extend so as to divide the space between the sheet-like members 3, 4, thereby forming a plurality of formworks 7.

[0045] Specifically, as shown in Fig. 7, the connecting member 10 includes a plurality of fibers arranged at a distance from each other in the vertical direction, and each of these multiple fibers extends so as to cross the first sheet-like member 3 and the second sheet-like member 4 in the thickness direction (specifically, the diagonal vertical direction). Such a connecting member 10 includes gaps formed between the multiple fibers and is configured in a blind shape as a whole. This allows the filler 5a that has come out of the melted bag body 5b when water is added to the filler pack 5 to move between adjacent forms 7 through the gaps in the connecting member 10.

[0046] For example, the connecting member 10 is made by weaving and knitting various chemical fibers such as polyester and nylon at intervals. More specifically, the connecting member 10 is formed by interweaving the fibers of the first sheet-like member 3 and the second sheet-like member 4 using a portion of the fibers constituting each of these sheet-like members 3 and 4.

[0047] According to the third embodiment, as shown in Fig. 8, when the hydraulic mat 1b is placed on a plane, the multiple forms 7 formed by the multiple connecting members 10 are arranged in a substantially straight line in the horizontal direction. That is, in the third embodiment, the forms 7 adjacent in the horizontal direction are not overlapped in the thickness direction (in other words, are not arranged in a staggered manner) as in the second embodiment (see Fig. 6). This makes it possible to further improve the uniformity of the thickness of the hydraulic mat 1b according to the third embodiment.

[0048] [Variations] In the above embodiment, concrete, mortar, and other cements are used as the powdered filler 5a, but the present invention is not limited to these, and various materials that harden when water is applied can be used. In addition, in the above embodiment, the first and second sheet-like members 3 and 4 are made of synthetic fibers, but materials other than these can be used for the first and second sheet-like members 3 and 4.

[0049] As described above, the above-described embodiment is an example for explaining the present invention, and the present invention is not limited to this embodiment. The present invention can be embodied in various forms without departing from the gist of the present invention. [Explanation of symbols]

[0050] 1, 1a, 1b Hydraulic Mat 3. First sheet-like member 4 Second sheet-like member 5 Filler Packs 5a Filler 5b Bag body 7 Formwork 8 Connecting part 9, 10 Connecting members

Claims

1. A hydraulic mat that is flexible and hardens when water is applied thereto, a first sheet-like member configured to be water permeable; a second sheet-like member provided opposite to the first sheet-like member; a powdered filler that hardens when water is applied thereto, and a bag that encloses the filler; and a plurality of filler packs that are disposed between the first sheet-like member and the second sheet-like member; having The bag of each of the plurality of filling material packs has water solubility, A plurality of molds for accommodating the plurality of filler packs are formed between the first sheet-like member and the second sheet-like member. A hydraulic mat characterized by:

2. The hydraulic mat according to claim 1, further comprising connecting members connected to each of the first sheet-like member and the second sheet-like member and extending to divide the space between the sheet-like members to form the multiple formworks.

3. The hydraulic mat according to claim 2, wherein the connecting member is configured to have a gap, so that when water is applied to the plurality of filler packs, the filler that melts and comes out of the bag can move between adjacent formworks via the connecting member.

4. 3. The hydraulic mat according to claim 2, wherein the connecting member is connected to each of the first sheet-like member and the second sheet-like member so as to extend in a zigzag pattern between the first sheet-like member and the second sheet-like member when viewed in a cross section of the hydraulic mat cut along the thickness direction.

5. The hydraulic mat according to claim 1 , wherein the filler material includes at least mortar.

6. 5. The hydraulic mat according to claim 1, wherein the plurality of formwork frames are arranged along one horizontal direction of the hydraulic mat and along another direction perpendicular to the horizontal direction.

7. 5. The hydraulic mat according to claim 1, wherein the first sheet-like member and the second sheet-like member are made of a woven or knitted fabric of chemical fibers.

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