WO2016128781A2

WO2016128781A2 - Canvas with double stem, and system for protection against water damages with the help of the canvas with double stem and using hosedam or other local materials

Info

Publication number: WO2016128781A2
Application number: PCT/HU2015/000081
Authority: WO
Inventors: István NAGY
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-02-12
Filing date: 2015-12-22
Publication date: 2016-08-18
Anticipated expiration: 2017-08-12
Also published as: WO2016128781A3

Abstract

The subject of the invention is a canvas with double stem, and system for protection against water damages with the help of the canvas with double stem and using hosedam or other local materials, which is usable for fixing of hosedams against slipping and in a impermeable manner with the help of the canvas with double stem, and the canvas with double stem allows the appropriate utilization of local materials, such as earth or debris, and also the canvas with double stem allows the protection of embankment from the direction of the flood plain. The canvas with double stem according to the invention is created by interconnected canvas stems. It is characterised by that, the canvas with double stem (1) is created with S2 lower canvas stem (3), which is fastened to the SI long canvas body (2) consisting of a single material and to the S3 upper canvas stem (4) connected from below by means of a joint (8), so that at one or both ends of the canvas with double stem (1) the lower canvas stem (3) is not connected to the canvas body (2) consisting of a single material, nor to the upper canvas stem (4) along an overlapping length (F), and fixing elements (5) are created with a spacing LI close to the joint (8) along the edges of the upper canvas stem (4) and lower canvas stem (3) on the canvas body (2) of the canvas with double stem (1) and on the lower canvas stem (3), and furthermore, a foldback (6) with strengthening element (7) may be prepared at the edges of upper canvas stem (4) and lower canvas stem (3) on the canvas body (2) of the canvas with double stem (1).

Description

Canvas with double stem, and system for protection against water damages with the help of the canvas with double stem and using hosedam or other local materials

The subject of the invention is a canvas with double stem, and system for protection against water damages with the help of the canvas with double stem and using hosedam or other local materials, which is usable for fixing of hosedams against slipping and in a impermeable manner with the help of the canvas with double stem, and the canvas with double stem allows the appropriate utilization of local materials, such as earth or debris, and also the canvas with double stem allows the protection of embankment from the direction of the flood plain.

It is expected that the flood control will present increasing challenges for the experts in the future in case of rivers - for reasons not detailed here - as a result of larger and more frequent flood waves. One of the most widely known and most frequently used mode of protection against flood is the heightening of embankment and not developed protecting lines with the use of sand bags. The heightening with sand bags, however, requires lots of labour and time, and the sand bags are to be handled as hazardous waste after the flood, which leads to additional problems regarding their handling and disposal.

Recent efforts in relation to flood control include the increasing use of interconnected hoses which are filled with water on site. The use of hoses, however, is problematic for a number of reasons, which should be tackled before their use for flood control could be regarded as safe, fast and economic. Application of these solutions means rather challenging tasks for the experts, because the crowns of embankments and the protecting lines are usually covered with mud. It is troublesome to lay hoses on such surfaces, the hoses tend to slip, and it is difficult to connect them safely and in a watertight manner, and no solutions are available for connecting them to walls or structures either. According to the state of art, the Hungarian patent document P 1 1 00649 makes known a mobile flood control dam system for a quick closing and damming water courses and floods, and for heightening embankment as a temporary flood control facility.

The mobile flood control dam system consists of water holding units, that can be filled with water, and supporting structures. The water holding units are fitted into triangular supporting frames of the supporting structure, and are fixed to the spacing rod of the supporting structure. The water holding unit is made from a single continuous piece of right angle rectangular shaped flexible material, which is divided into three parts by means of longitudinal folding, forming a triangular prism in filled condition, the surface of which contacting the ground is the middle folded part, and which is open along its upper edge. The lateral ends of the water holding unit are partially closed preferably by means of watertight elements. The water holding units have extensions made of their own material for connecting the units, and the water holding units can be connected by slipping these extensions into one another.

The Hungarian patent document No. P 02 01683, filing No. HU 223479 makes known a procedure for improving the protecting capability of flood control earth dikes. The procedure according to the invention includes placing a high strength continuous plastic sheet on the crown of the earth dike at the water side, which turns inside the earth dike from the surface; to a depth of about 1.5 m; inserted with the help of a self propelled machine working without opening a trench, and using a V shaped blade. A structure strengthening geogrid system is also laid if necessary at the saved side, which also turns inside the earth dike from the surface to a depth of about 1.5 m, which geogrid system consists of densely woven NETLON net and geotextile attached to it (so called BINET grid). The plastic sheet is inserted into the earth the same way as the geogrid system, while turned by an angle of 90 °and as laid in one of the shanks of the V shaped blade. When heightening with emergency dike is used for improving the protecting capability of the earth dike according to the procedure, the emergency dike is fixed to the joining element(s) attached to the upper edge of the continuous plastic sheet. It is desirable to establish so called hose type emergency dikes consisting of water filled rubber hose(s), where the rubber hose(s) are joined mechanically or in a watertight manner to the upper edge of the plastic sheet.

The utility model document No. HU U 95 00058, filing No. HU 690 makes known means for flood control, which contains hosedam having a flexible mantle surrounding a void which is suitable for holding water, and also having end plates for closing both ends of the mantle, where at least one of the end plates is provided with a transfer pipe stub, which communicates with the void, and allows filling liquid into the void and also allows discharging the fluid from the void, and the hosedam is placed on the carrier surface of the bank to be protected, while the mantle is equipped with one or more connecting extensions, which can be used for fixing the hosedam, so that it could not move relative to the carrier surface. The protecting side of the mantle towards the water mass is supplemented with a liquid closing member having an insulating property, which is passed through the carrier surface and inserted into the soil of the bank, where it is fixed to prevent displacement, while the mantle and liquid closing member are interconnected in a manner that excludes the seepage of liquid.

The drawbacks of the solutions described above include the fact that a proper water tightness cannot be ensured even when hosedams are used, and these solutions do not allow the utilization of local materials for watertight heightening of embankments. A further drawback is that they do not reduce the seepage of water below or eventually over the emergency dike to be prepared when the water level is close to or exceeds the crown level of the embankment or the terrain level of the area to be protected, and they do not prevent water from spilling or flowing over the emergency dike. They are less resistant to waves, and their adaptation to the terrain conditions is less flexible.

When we developed the solution according to the invention our aim was to create a system, with the help of which it would be possible to heighten embankments or to prevent other water damages with an acceptable safety in a simple manner, quickly and with moderate costs, and using local materials if necessary. We recognised during the development of the solution according to the invention that if a canvas with double stem is produced with a canvas body and an upper canvas stem from a single piece of material, to which a lower canvas stem is joined from below, and the canvas body is fixed on the slope of the embankment towards the flood plain with the help of its fixing elements, while the lower canvas stem is fixed to the crown section of the embankment towards the flood plain with the help of its fixing elements close to the joint by passing anchor spikes through the fixing elements, and water filled hosedams or sand bags or other local materials such as earth are placed on the lower canvas stem of the canvas with double stem, and the upper canvas stem of the canvas with double stem is folded on these parts, and the lower canvas stem is joined to the upper canvas stem by means of a fixing rope passed through its fixing elements, then the set out aim can be reached.

The invention is a canvas with double stem, which is created by interconnected canvas stems. It is characterised by that, the canvas with double stem is created with S2 lower canvas stem, which is fastened to the SI long canvas body consisting of a single material and to the S3 upper canvas stem connected from below by means of a joint, so that at one or both ends of the canvas with double stem the lower canvas stem is not connected to the canvas body consisting of a single material, nor to the upper canvas stem along an overlapping length, and fixing elements are created with a spacing LI close to the joint along the edges of the upper canvas stem and lower canvas stem on the canvas body of the canvas with double stem and on the lower canvas stem, and furthermore, a foldback with strengthening element may be prepared at the edges of upper canvas stem and lower canvas stem on the canvas body of the canvas with double stem.

In a preferred embodiment of the canvas with double stem according to the invention the length of the canvas body of the canvas with double stem is preferably SI = 4 m, while the length of its the upper canvas stem is preferable S3 = 1 m, and the length of its lower canvas stem is preferably S2 = 1 m. In another preferred embodiment of the canvas with double stem according to the invention the joint may be made with adhering, sewing, welding or with other know joining technology.

In a further preferred embodiment of the canvas with double stem according to the invention fixing element can be canvas snap fasteners or D shaped rings, or other elements securing the joint.

In a further preferred embodiment of the canvas with double stem according to the invention the material of the lower canvas stem may be different from the material of the canvas body and the upper canvas stem.

In a further preferred embodiment of the canvas with double stem according to the invention the material of the canvas body and the upper canvas stem is prepared preferably from fibre reinforced appropriate watertight canvas treated with suitable UV stabilizing substance.

The invention is furthermore a system prepared from canvas with double stem and hosedams for protection against water damages, which is created from hosedams surrounded by canvas. It is characterised by that, the canvases with double stem are fitted next to one another in lengthwise direction in a watertight manner along a length F by sliding together the parts not provided with joint with length F at their ends, and the canvas bodies of the canvas with double stem are fixed on the slope of embankment towards the flood plain with the help of its fixing elements, while the lower canvas stems are fixed to the part of the crown of embankment toward the flood plain with the help of its fixing elements close to the joint using anchor spikes passed through its fixing elements, and the water filled hosedams continuously placed in longitudinal direction on the lower canvas stems of the canvas with double stem are interconnected in a shape closing manner with the help of ropes or snap links passed through its fixing elements installed on the strengthenings, and the upper canvas stems of the canvas with double stem are folded on the water filled hosedams, and the lower canvas stems are interconnected with the upper canvas stems by means of fixing ropes passed through their fixing elements.

In a preferred embodiment of the system according to the invention sand bags or local materials are placed on the lower canvas stems of the canvas with double stem, and the upper canvas stems of the canvas with double stem are folded on these materials, and the lower canvas stems are interconnected with the upper canvas stems by means of a fixing rope passed through their fixing elements.

In another preferred embodiment of the system according to the invention the canvas body of the canvas with double stem fixed to the slope of embankment towards the flood plain protects the upper part and crown of the embankment from seepage along its entire length.

In a further preferred embodiment of the system according to the invention two or three interconnected hosedams are placed on the lower canvas stem of the canvas with double stem which is fixed on the crown of the embankment, while the lower canvas stem and the upper canvas stem are fixed in a stable manner by interconnecting them by means of fixing ropes.

In a further preferred embodiment of the system according to the invention the canvas body of the canvas with double stem is fixed to the slope of the embankment towards the flood plain with the help of weights, while the lower canvas stem is fixed to the opposite slope of the embankment with weights attached to the rope.

The solution according to the invention is furthermore set forth by the enclosed drawings:

Fig. 1 shows the canvas with double stem according to the invention in a partially unfolded condition.

Fig. 2 shows the top view of canvas with double stem according to the invention. Fig. 3 shows stage I of a possible embodiment of heightening the embankment produced with the help of canvas with double stem and hosedam according to the invention.

Fig. 4 shows stage II of the heightening of embankment introduced in Fig. 3.

Fig. 5 shows another possible embodiment of heightening the embankment with the use of canvas with double stem and hosedam introduced in Fig. 3.

Fig. 6 shows a heightening of embankment produced from the canvas with double stem according to the invention and from three hosedams.

Fig. 7 shows the heightening of embankment created with the help of the canvas with double stem according the invention and the sand bags.

Fig. 8 shows a possible embodiment of the canvas with double stem according to the invention for agricultural use.

Fig. 9 shows a possible design of the hosedam.

Fig. 10 shows a possible solution for the extension of canvas with double stem and the upper canvas stem in a watertight manner.

Fig. 11 shows a further possible embodiment of the canvas with stem according to the invention.

Fig. 1 shows the canvas with double stem 1 according to the invention in a partially unfolded condition. Fig. 2 shows the top view of canvas with double stem 1 according to the invention. In the figures it is possible to see the canvas body 2, having a length of SI , the lower canvas stem 3, having a length of S2, and the upper canvas stem 4, having a length of S3, of the canvas with double stem 1. Lengths SI, S2, and S3 can be selected arbitrarily according to the actual use.

It can be seen in Fig. 1 that the lower canvas stem 3 is connected to the upper canvas stem 4 from below in a known manner by means of a joint 8. The joint 8 can be prepared with adhering, sewing, welding or with other know fastening technology.

Fixing elements 5 are fastened with a spacing LI close to the joint 8 at the end of canvas body 2 of the canvas with doubler stem 1, and at the end of upper canvas stem 4, and at the end of the lower canvas stem. The fixing elements 5 can be canvas snap fasteners, D rings or both as required, or other elements, through which ropes, straps, plastic ribbons or anchor spikes could be passed for fixing the canvas with double stem 1 to the ground.

It can be seen in the figures, that edges of the canvas with double stem 1 are produced with a foldback 6, which is provided with canvas strengthening element 7.

Fig. 3 shows stage I of a possible embodiment of heightening the embankment 9 produced with the help of canvas with double stem 1 and hosedam 13 according to the invention. The embankment 9 with the slopes 19 can be seen in the figure. The canvas body 2 of the canvas with double stem 1 according to the invention is laid on the slope 19 of the embankment 9 towards the flood plain 1 1, and it is anchored to the slope 19 by means of anchor spike 14 passed through its fixing element 5. The lower canvas stem 3 of the canvas with double stem 1 is laid on the crown 10 of the embankment 9, and is anchored to the crown 10 by means of the anchor spike 14 passed through its fixing element 5 close to the joint 8. It can be seen in the figure, that the hosedam 13 is placed at the edge of the crown 10 on the lower canvas stem 3, depicted in the drawing as filled with water.

Fig. 4 shows stage II of the heightening of embankment 9 introduced in Fig. 3. The embankment 9 together with the slopes 19, and the canvas with double stem 1 together with hosedam 13 can be seen in the figure.

In stage II of this embodiment the upper canvas stem 4 of the canvas with double stem 1 is folded onto the top of the hosedam 13 through its fixing element 5 that has been established on it, and it is joined to the fixing element 5 of the lower canvas stem 3 by means of the inserted fixing rope 15. It can be seen in the figure that the water level 12 in this case is above the crown 10 of the embankment 9 within the flood plain 11.

Fig. 5 shows another possible embodiment of heightening the embankment 9 with the use of canvas with double stem 1 and hosedam 13 introduced in Fig. 3. The solution shown in this figure includes pavement on the embankment 9, which means that the anchor spike 14 cannot be used. In this case the positioning of the canvas with double stem is done by using a weight 17 to fix the canvas body 2 placed on the slope towards the flood plain 1 1 , while a weight 17 attached to the rope 16 is used to fix the lower canvas stem 3, so that the weight 17 attached to the rope 16 is located on the other slope 19, therefore, the canvas with double stem 1 gets into a tensioned stable condition with the help of the weights 17.

Fig. 6 shows a heightening of embankment 9 produced from the canvas with double stem 1 according to the invention and from three hosedams 13. The canvas with double stem 1 can be seen in the figure together with the fixing to the embankment 9 according to Fig. 3. In this case the two lower hosedams 13 are attached to each other first, and then the third hosedam 13 is simply placed on them, and then the lower canvas stem 3 and the upper canvas stem 4 of the canvas with double stem 1 are joined according to Fig. 3. In this case it is possible to prevent water from flowing over the embankment 9 from the flood plain 1 1 to the protected side even if the water level 12 is much higher.

Fig. 7 shows the heightening of embankment 9 created with the help of the canvas with double stem 1 according the invention and the sand bags 20. The figure shows the embankment 9 together with the slopes 19. The canvas body 2 of the canvas with double stem 1 according to the invention is laid on the slope 19 of the embankment towards the flood plain 11, and it is anchored to the slope 19 by means of anchor spike 14 passed through its fixing element 5. The lower canvas stem 3 of the canvas with double stem 1 is laid on the crown 10 of the embankment 9, and it is anchored to the crown 10 by means of anchor spike 14 passed through the fixing element 5 located close to the joint 8. In this case the lower canvas stem 3 is folded back, and sand bags 20 arranged in tie are placed on it, then the upper canvas stem 4 is folded on the top of the sand bags, and it is fixed to the crown of the embankment by means of weight 17 or with the help of other known method.

Fig. 8 shows a possible embodiment of the canvas with double stem 1 according to the invention for agricultural use. As can be seen in the figure, the separation of the two different materials is done using the canvas with double stem 1 according to the invention. In this case the canvas body 2 and the lower canvas stem 3 of the canvas with double stem 1 are laid on the ground, then a planar canvas 21 is placed on the canvas body 2 as well as on the lower canvas stem 3. While the upper canvas stem 4 of the canvas with double stem 1 is kept vertically, the materials 22, 23 are placed to the opposite sides of the upper canvas stem 4. In this way it is possible to separate two different bulk materials for example.

Fig. 9 shows a possible design of the hosedam 13. A hosedam 13, having a length L, can be seen in the figure in a condition when filled with water, together with strengthening 18 attached to its ends, in which fixing elements 5 are located. These fixing elements 5 can be canvas snap fasteners, D rings or other known solutions.

The hosedams 13 placed in the given case next to one another in longer direction or side by side are connected with the help of fixing elements 5 in a way that for instance snap links are passed through the fixing elements 5 for fastening the hosedams 13 together.

Fig. 10 shows a possible solution for the extension of canvas with double stem 1 and the upper canvas stem 4 in a watertight manner. As can be seen in the figure, two canvases with double stem 1 are laid with and overlap F initially. Then the hosedams 13 are placed on the canvases with double stem 1 , which are connected to one another with the help of snap links for example through the fixing elements 5 created at their ends. Then the canvases with double stem 1 are fixed to the hosedams 13 according to the method described above. For ensuring water tightness at the joints of the canvases with double stem 1 the lower canvas stem 3 is produced with a length reduced by overlap length F at one of the ends of the canvas with double stem 1.

Fig. 11 shows a further possible embodiment of the canvas with stem 1 according to the invention. The bottom view of the canvas with double stem 1 is shown in the figure together with the SI long canvas body 2 and the S2 long lower canvas stem 3 and the S3 long upper canvas stem 4. The lengths SI, S2 and S3 can be selected arbitrarily according to the use. It can be seen in the figure that the lower canvas stem 3 is combined with the upper canvas stem 4 from below with the help of joint 8 in a way, that the they are not joined in this case along a length F at both ends of the canvas with double stem 1.

The design described above of the ends of the canvas with double stem 1 makes sure that the canvases with double stem 1 placed next to one another in longitudinal direction can be fitted together in a watertight manner while overlapping one another. In order to make this fitting, the canvas body 2 and the upper canvas stem 4 is lifted along a length F at the end of the canvas with double stem 1, where the joint 8 has not been prepared, and the other canvas with double stem 1 is laid on it in a way that the lower canvas stem 3 of both canvases with double stem 1 are on the top of one another with the upper canvas stem 4 of the other canvas with double stem 1 placed on it. Then the previously lifted canvas body 2 and upper canvas stem 4 are lowered back.

Fixing elements 5 with any quantity and arrangement according to the needs are formed on the canvas body 2 of the canvas with double stem 1 , as well as on the upper canvas stem 4 and on the lower canvas stem.

In case of an advantageous preferred embodiment of the solution according to the invention, the canvas with double stem 1 is designed in a way that the SI long canvas body 2 and the S3 long upper canvas stem 4 are cut out from a single piece of material. The lower canvas stem 3 are connected to the canvas body 2 and upper canvas stem 4 that has been cut out from a single piece of material by means of joint 8 with a known method. In the given case the lower canvas stem 3 can be prepared from different material, preferably made of an anti-slip material.

In case of an advantageous preferred embodiment of the hosedam 13 a cylinder having a length L with circular closing ends with a diameter D are created, where strengthenings 18 are attached to the ends, in which fixing elements 5 are installed.

The strengthenings 18 fixed to one of the ends of the hosedam 13 can be preferably designed so that they protrude significantly beyond the given hosedam 13 in order that the water tightness of the connection is improved by inserting the connecting hosedam 13 into it. If required, canvas strips can be attached in lengthwise direction on the surface of the hosedam 13, in which fixing elements 5 are installed, or strengthening canvas rings with required quantity and width are prepared in lengthwise direction, in which fixing elements 5 are also installed.

In case of an advantageous preferred actual use of the solution according to the invention, first the canvas body 2 of the canvas with double stem 1 is laid on the slope 19 of the embankment 9 towards the flood plain 11. Here, the canvas body 2 is fixed with the help of anchor spikes 14 passed through the fixing elements 5 located on it. The canvas body 2 protects the top level of the embankment 9 from seepage of water along its entire length SI . Then the lower canvas stem 3 of the canvas with double stem 1 is laid on the crown 10 of the embankment 9, and with the help of anchor spikes 14 passed through the fixing element 5 located close to the joint 8 it is fixed on the crown 10 of the embankment 9. Then the empty hosedams 13 are placed on the lower canvas stem 3 at the edge of crown 10 situated towards the flood plain 11. After filling the hosedams 13, the upper canvas stem 4 of the canvas with double stem 1 is folded over the hosedams 13, and the upper canvas stem 4 is joined to the lower canvas stem 3 by means of the fixing ropes 15 passed through the fixing elements 5 installed on them. A watertight and stable heightening of embankment 9 can be created with this operation corresponding to practical requirements.

According to the needs and in line with the method described above, it is possible to use two hosedams 13 aligned side by side, water filled and interconnected plastic containers (e.g. IBS container with steel frame), or three hosedams 13, or it is possible to use sand bags or any other local material, even earth in the given case excavated form the opposite side of the crown 10 of the embankment 9.

The longitudinal connection of the hosedams 13 of the solution according to the invention can be created as follows: At both their longitudinal ends the hosedams are provided with canvas strengthening 18 having a suitable width all around the perimeter. The 3-8 pieces of fixing elements 5 are fixed to the canvas strengthening 18 as required, which are preferably D rings. The hosedams 13 fitted together in longitudinal direction are connected preferably by means of snap links provided with security lugs or by means of screwed snap links inserted in the D rings.

The canvases with double stem 1 are located beneath the hosedams 13 with an overlap of at least F=2 m, and having fixing elements 5 spaced at Ll=l m at least, which may be canvas snap links and/or D rings. The two branches of the canvas with double stem 1 are folded over the hosedam 13, and are connected by means of rope or strap, thus ensuring the appropriate water tightness.

The lengthwise connection of hosedams 13 to other types of protecting means, e.g. to structures or to protecting means produced from sand filled sacks is to be secured in a preferred manner. The hosedams 13 are tightly fitted to the connecting protecting means as placed on the canvas with double stem 1.

The hosedams 13 of the solution according to the invention may be placed next to one another and can be connected together according to the following procedure: Strengthenings are created in addition to the above ones in longitudinal direction on both hosedams 13 with frequency and width as required, which are at the same time applicable for fixing the required quantity of D rings. The two hoses laid side by side are connected by means of snap links having safety lugs, or by means of screwed snap links, and with the help of D rings.

The joining of three hoses can be made as described below when using the hosedams 13 of the solution according to the invention: Two hosedams 13 are aligned next to each other and are joined in a manner described above from the hosedams 13 having the design described above, then a third one is put on the top of the previous two, which are joined together as necessary, or fastened to one another by means of ropes or straps.

The main goal of the solution according to the invention is to facilitate a fast and safe construction of protecting facilities against water which is expected to flow over the crown of the flood control embankments or high banks and other similar locations, with the use of local materials. Further applications of the system or its respective elements could be related to agriculture or other fields.

The means necessary in case of the application of the solution according to the inventions are as follows:

- canvas with double stem and its accessories

- hose, hoses together with their accessories

- means for draining and filling

- air blower

- repair kit

- means and materials for cleaning, drying, disinfecting and preservation

- forming of unit package on pallet and/or in BIG-BEG bag, storage bags

In case of the solution according to the invention the parameters of the hosedam are as follows:

- diamater: 55-95 cm as required

- length: as required, the recommended length is 20 m

- weight should be below 50 kg together with the storage bag

- the material is a suitable selected watertight canvas having a tensile strength corresponding to the requirements, which is provided with UV protection

- temperature range (recommended):

during use: from -10 to +35 °C, during storage: -25 to +35 °C

- fixing lugs and straps with allocation according to the need

- handles

- valve for filling water, together with check valve, size 1.5 " or 2 " (preferably a type which is suitable for discharging as well as for inflating)

- discharge vale (preferably it should function also as filling valve)

- air vent valve(s)

- element that can be opened at its ends for facilitating discharging, internal cleaning and drying

- air intake valve (preferably it should be the same as the filling valve)

- pressure in the hose: as necessary The preferred accessories of the solution according to the invention are as follows:

- Polypropylene or jute sack for staring, handling and transport

- wedges as required (for preventing turning)

- joining elements (between hoses and between "T" canvas)

The length of the canvas with double stem 1 can be selected according to the need, and the recommended length is about 22.1 m. The length of the SI long canvas body 2 can be selected as needed, preferably to 4 m, while the size of the S2 long upper canvas stem 4 and of the S3 long lower canvas stem 3 is 1 m preferably.

Suitable watertight canvas made of fibre reinforced polyethylene is the material used for the canvas body 2 and the upper canvas stem 4 of the canvas with double stem 1 according to the invention. Recommended canvas: minimum weight 180 g/m², tensile strength about 900 kN/m , water permeability less than 1 mg for 5 minutes when watered from a height of 1 m. The selected canvas materials is preferably treated with UV stabilizing substance according to the standard AATCC-35. The material of the lower canvas stem 3 can be the same as that of the canvas body 2, or can be other suitably selected material.

The edges around the canvas with double stem 1 according to the invention are produced as required with seam or foldback 6, and strengthening element 7, and for example nylon cords or PP fabric strips are inserted in the foldback 6.

Fixing elements 5, having a spacing and a diameter as required according to the application, are prepared along the edges or at other locations of the canvas with double stem 1 according to the invention, preferable at the end of canvas body 2, at the end of upper canvas stem 4 and at the end of the lower canvas stem 3, as well as at its part close to the joint 8 with a spacing of Ll=l m.

The advantages of the solution according to the invention include the fact that the emergency dike assembled form the canvas with double stem can be prepared easily and quickly, and that the canvas with double stem and the hosedam can be used repeatedly. A further advantage is that the assembly according to the invention, i.e. the canvas with double stem and the hosedam has a maximum weight of 12 kg only along one m length, which represents a structural weight well below that of the generally used sand bags, which could reach a specific value of 700kg/m. The small weight of the emergency dike is a very important factor, because an extensive load coming from above could lead to catastrophic consequences in case of a soaked embankment which is exposed to high water pressure. The assembling of this system is so simple, that it can be established with an acceptable safety by unskilled people under the supervision of a main directing expert.

List of references:

1 - canvas with double stem 20- sand bag

2 - canvas body 21 - planar canvas

3 - lower canvas stem 22 - material

4 - upper canvas stem 23 - material

5 - fixing element F - lenght of overlap

6 - foldback SI = length

7 - strengthening element S2 = length

8 - joint S3 = length

9 - embankment L = length

10 - crown LI = length

1 1 - flood plain D - diameter

12 - water level

13 - hosedam

14 - achore spike

15 - fixing rope

16 - rope

17 - weight

18 - strenghening

19 - slope

Claims

CLAIMS:

1. Canvas with double stem, which is created by interconnected canvas stems, characterised by that the canvas with double stem (1) is created with S2 lower canvas stem (3), which is fastened to the SI long canvas body (2) consisting of a single material and to the S3 upper canvas stem (4) connected from below by means of a joint (8), so that at one or both ends of the canvas with double stem (1) the lower canvas stem (3) is not connected to the canvas body (2) consisting of a single material, nor to the upper canvas stem (4) along an overlapping length (F),

and fixing elements (5) are created with a spacing LI close to the joint (8) along the edges of the upper canvas stem (4) and lower canvas stem (3) on the canvas body (2) of the canvas with double stem (1) and on the lower canvas stem (3),

and furthermore, a foldback (6) with strengthening element (7) may be prepared at the edges of upper canvas stem (4) and lower canvas stem (3) on the canvas body (2) of the canvas with double stem (1).

2. Canvas with double stem according to claim 1, characterised by that the length (SI) of the canvas body (2) of the canvas with double stem (1) is preferably SI = 4 m, while the length (S3) of its the upper canvas stem (4) is preferable S3 = 1 m, and the length (S2) of its lower canvas stem (3) is preferably S2 = 1 m.

3. Canvas with double stem according to any of the claims 1-2, characterised by that the joint (8) may be made with adhering, sewing, welding or with other know joining technology.

4. Canvas with double stem according to any of the claims 1-3, characterised by that fixing element (5) can be canvas snap fasteners or D shaped rings, or other elements securing the joint.

5. Canvas with double stem according to any of the claims 1-4, characterised by that the material of the lower canvas stem (3) may be different from the material of the canvas body (2) and the upper canvas stem (4).

6. Canvas with double stem according to any of the claims 1-5, characterised by that the material of the canvas body (2) and the upper canvas stem (4) is prepared preferably from fibre reinforced appropriate watertight canvas treated with suitable UV stabilizing substance.

7. System prepared from canvas with double stem and hosedams for protection against water damages, which is created from hosedams surrounded by canvas, characterised by that canvases with double stem (1) are fitted next to one another in lengthwise direction in a watertight manner along a length F by sliding together the parts not provided with joint 8 with length F at their ends, and the canvas bodies (2) of the canvas with double stem (1) are fixed on the slope (19) of embankment (9) towards the flood plain (1 1) with the help of its fixing elements (5), while the lower canvas stems (3) are fixed to the part of the crown (10) of embankment (9) toward the flood plain (11) with the help of its fixing elements (5) close to the joint (8) using anchor spikes (14) passed through its fixing elements (5), and the water filled hosedams (13) continuously placed in longitudinal direction on the lower canvas stems (3) of the canvas with double stem (1) are interconnected in a shape closing manner with the help of ropes or snap links passed through its fixing elements (5) installed on the strengthenings (18), and the upper canvas stems (4) of the canvas with double stem (1) are folded on the water filled hosedams (13), and the lower canvas stems (3) are interconnected with the upper canvas stems (4) by means of fixing ropes (15) passed through their fixing elements (5).

8. System according to claim 7, characterised by that sand bags (20) or local materials are placed on the lower canvas stems (3) of the canvas with double stem (1), and the upper canvas stems (4) of the canvas with double stem (1) are folded on these materials, and the lower canvas stems (3) are interconnected with the upper canvas stems (4) by means of a fixing rope (15) passed through their fixing elements (5).

9. System according to any of the claims 7 - 8, characterised by that the canvas body (2) of the canvas with double stem (1) fixed to the slope (19) of embankment (9) towards the flood plain (11) protects the upper part and crown of the embankment from seepage along its entire length (SI).

10. System according to any of the claims 7 - 9, characterised by that two or three interconnected hosedams (13) are placed on the lower canvas stem (3) of the canvas with double stem (1) which is fixed on the crown (10) of the embankment (9), while the lower canvas stem (3) and the upper canvas stem (4) are fixed in a stable manner by interconnecting them by means of fixing ropes (15).

1 1. System according to any of the claims 7 - 10, characterised by that the canvas body (2) of the canvas with double stem (1) is fixed to the slope (19) of the embankment (9) towards the flood plain (11) with the help of weights (17), while the lower canvas stem is fixed to the opposite slope (19) of the embankment (9) with weights (17) attached to the rope (16).