SK772003A3 - Segment of flood-protection wall based on special bag filled with water - Google Patents

Abstract

Segment of flood-protection wall based on special bag filled with water Segment of flood-protection wall is based on special bag filled with water. When filledthe segment occupies (analogous to more sophisticated representatives of flood-protectionbags) domed shape over its basis which is defined by at least one convex surface. Ratio of rectangular projection of segment width to rectangular projection of segment height is within 1.5 : 1 to 3.5 : 1. Segment has at least one filling throat and at least one vent throat in the toparea and at least one draining throat in the foot area; opposite parts of inner wall in bag cavityare connected by at least one stability partition. Segment surface sheet is made of plain weave fabric two-sided coated by elastomer compound based on EPDM rubber and butadiene-styrene rubber.

Description

Flood wall segment based on water-filled bag

Technical field

The invention relates to a segment of a flood wall based on a water-filled bag. The walls assembled from these segments are primarily intended as temporary dams and sealing elements for the rapid protection of various objects against floods, while having a wide range of applications in various flood situations and threats.

BACKGROUND OF THE INVENTION

At present, flood bags are known as well as flood walls of various construction. These are eg. o a whole group of water-refillable bags having a cross-section in the shape of a triangle built on the base. The cross-sectional shape can be maintained either by an external support structure made up of bars or by internal baffles distributed within the bag at regular intervals. The bag sheath is in these cases made of chemically resistant plastic, especially low density polyethylene.

Basically similar is the flood control system of open bags (tanks), which have a trapezoidal cross-section and consist of a robust, quickly assembled steel tube frame and a sheath of geotextile or polyvinyl chloride-coated fabric. These bags are filled with sand, earth, resp. in waterproof construction.

A common disadvantage of the aforementioned flood walls constructed of triangular or trapezoidal cross-sectional bags is their not quite suitable shape. This shape has to be fixed by supporting structure, internal partitions etc. and also may be subject to stress concentration at the apex of the cross-section.

For these reasons, the arched arcuate shape of the bag, defined by one or more overlapping convex surfaces, seems to be more suitable. Since the shape of the bag thus designed better respects the force conditions in the meat of the water given by gravity and surface tension, the mechanical stress of the bag shell is more favorable in this case.

For this reason, known flood-resistant bags of a newer construction have, in their filled state, a curved arch shape. Specifically, e.g. a known bag with a collapsed ellipse shell, which is fixed by an inner longitudinal partition which connects the opposite upper and lower walls of the bag. The bag sheath is made of an impermeable membrane based on polyester fabric coated with polyvinyl chloride.

Another known flood bag has, in an exemplary solution, a shell formed by a triple of intersecting convex surfaces (a "trefoil" cross-section). Here again, the cross-sectional shape of the filled bag is maintained by the inner partitions that connect the opposite walls of the bag housing. The bag sheath is in this case made of geomembrane (without specifying the structure and composition).

As already mentioned, the arched arcing flood bags are advantageous in terms of a more favorable force load on their casing. Thus, they have structural prerequisites for higher mechanical resistance and durability than previously known bags of other cross-sectional shapes. However, the drawback of practical arched bag solutions is the fact that they are not optimized for the jacket materials used. The plastic-based coating materials used (especially polyvinyl chloride) are not optimal in this application, either in terms of the possibility of immediate mechanical damage during handling of the seams or in terms of long-term resistance during use in a given flood situation.

SUMMARY OF THE INVENTION

In order to overcome the aforementioned drawbacks of the known solutions of flood bags and walls, the segment of the flood wall based on the water-filled bag according to the invention contributes. This segment assumes (like the more sophisticated types of prior art flood bags) in a filled state above the base an arched arcuate shape defined by a casing in the form of at least one convex surface and integrally connected planar faces, with opposing portions of the inner wall of the casing segment connected at least one stabilizing screen.

The present invention is characterized in that the ratio of the rectangular diameter of the segment width to the rectangular projection of its height is in the range of 1.5: 1 to 3.5: 1, the segment having at least one filler neck and at least one venting at the apex of its arched arc. neck and at least one discharge neck. The sheath of the segment is made of a plain weave fabric with a double-sided application of an elastomeric blend based on a combination of ethylene-propylene diene rubber and butadiene-styrene rubber.

From the point of view of joining the individual segments into a compact flood wall, it is advantageous if the segment casing is provided with connecting lugs with metal eyes in the end regions.

For ease of handling, at least four handling handles are preferably attached to the jacket of the flood wall segment.

Preferably, the sheath fabric of the double-sided segment of the elastomeric composition is a plain weave fabric having a tensile strength determined on a 50 x 200 mm sample in the warp direction of 1,800 to 2,300 N and a weft direction of 2,000 to 2,300 N. in particular, it may be a polyester fabric with a basis weight of 140 g / m ² ± 10%.

The coating composition of the segment sheath based on the combination of ethylene-propylene-diene rubber and butadiene-styrene rubber preferably has a tensile strength of at least 10 MPa, an elongation at least 400%, a permanent compressive deformation of at most 50%, low temperature resistance up to -25 ° C and resistance to high temperatures up to +70 ° C.

The deposition of the elastomeric bag jacket composition preferably has a thickness of 1.2 to 1.4 mm.

The main benefit of the flood wall segment according to the invention is that it combines the advantages of an optimized segment bag design (arched shape with defined width-to-height ratio and defined location of filling, venting and discharge port (s)) with the advantages of optimum composite sheath material. Fabric cloth with double-sided application of an elastomeric blend based on a combination of EPDM rubber and butadiene-styrene rubber, preferably with even more precisely defined mechanical properties, in combination with the above-defined bag design, guarantees optimal handling and application properties of the segment even in demanding space and weather conditions. This guarantees in particular the fulfillment of the priority requirement of the reliability of the segments function, resp. a flood wall constructed from them, for the entire period of use in a particular flood situation.

BRIEF DESCRIPTION OF THE DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a single arched segment according to the invention, FIG. 2 shows a section through the segment according to FIG. 1, FIG. 3 shows a side view of a double-arched segment according to the invention, FIG. 4 shows a section through the segment according to FIG. Third

DETAILED DESCRIPTION OF THE INVENTION

Example 1

The flood wall segment 1 in the solution of FIG. 1, respectively. 2 occupies, in the filled state above the base, an arched shape defined by a convex surface shell and integrally connected planar faces to it - a "loaf" cross-section. The ratio of the rectangular projection of the width of the segment 1 to the rectangular projection of its height v in this solution is 2.15: 1, the length of the segment 1 may be 2 to 5 m. Segment f is provided at the apex of its domed shape with one filler neck 3 and one venting neck 4, and in the heel region with one discharge neck 5. All these neckings 3, 4, 5 are provided with unified fire brigades.

The sheath 2 of segment 1 is made of a polyester woven fabric with a double-sided application of an elastomeric blend based on a combination of ethylene-propylenedien rubber and butadiene-styrene rubber.

The polyester fabric has a basis weight of 140 g / m ² ± 10% and a tensile strength, determined on a sample of 50 x 200 mm, in the warp direction of 2294 N and in the weft direction of 2298 N.

The deposition of the elastomeric sheath 2 of segment 1 has a thickness of 1.29 mm. The blend itself based on a combination of ethylene-propylene-diene rubber and butadiene-styrene rubber has a tensile strength of 11.5 MPa, an elongation at break of 455%, a permanent compressive deformation of at most 45%, low temperature resistance up to -25 ° C and high resistance temperatures up to + 70 ° C.

The upper wall of the housing 2 of the segment 1 is connected in the cavity of the bag to the opposite lower wall by a stabilizing partition 9.

The housing 2 is provided in the end regions with fastening clips with metal eyes 6 for connecting adjacent flood wall segments with connecting ropes 7. Four vulcanized rubber-textile ears 8 are attached to the housing 2 for ease of handling the segment 1.

The flood wall segment X in the exemplary embodiment of FIG. 1 and 2 is intended to increase the banks of watercourses, to encircle individual houses or larger units with a compact flood dam, in cities for street gardening (between houses), to prevent water from entering the passages of houses and the like. The segments 1 of this solution can stand on an open area without leaning on the wall of the object.

Example 2

The flood wall segment 1 in the solution of FIG. 3, respectively. 4 occupies, in the filled state above the base, an arched shape delimited by two intersecting convex surfaces - a "leaf-shaped" cross-section. The ratio of the rectangular projection of the width of the segment 1 to the rectangular projection of its height v in this solution is 1.45: 1, the length of the segment J may be 2 to 5 m. The segment 1 is provided at the apex of its domed shape with one filler neck 3 and one venting neck 4, and in the heel region with one discharge neck 5. All these neckings 3, 4, 5 are again provided with unified fire brigades.

The sheath 2 of segment X is made of a polyester woven fabric with a double-sided application of an elastomeric blend based on a combination of ethylene-propylene diene rubber and butadiene-styrene rubber.

The polyester fabric has a basis weight of 140 g / m ² ± 10% and a tensile strength, determined on a sample of 50 x 200 mm, in the warp direction of 2294 N and in the weft direction of 2298 N.

The deposits of the elastomeric sheath 2 of segment 1 have a thickness of 1.29. mm. The mixture itself, based on a combination of ethylene-propylene-diene rubber and butadiene-styrene rubber, has a tensile strength of 11.5 MPa, an elongation of 455%, a permanent compressive deformation of maximum 45%, low temperature resistance up to -25 ° C and high resistance temperatures up to + 70 ° C.

The upper wall of the segment 1 jacket 2 is connected in the cavity of the bag to the opposite lower wall by a vertical stabilizing partition 9, the side walls of the segment 2 jacket 2 are then connected by a horizontal stabilizing partition 9.

The housing 2 is provided in the end regions with metal eyelets 6 for connecting adjacent flood wall segments 1 to each other by means of connecting ropes 7. Four vulcanized rubber-textile ears 8 are attached to the housing 2 for ease of handling the segment 1.

The flood wall segment X in the exemplary embodiment of FIG. 3 and 4 is designed primarily to prevent water intrusion into individual buildings through doors, garage doors, low-placed windows and air shafts, various cellar windows, etc. The segments 1 in this solution must be supported or otherwise statically secured. When used outdoors, these segments must be doubled and leaning against each other.

When using the segments according to Examples 1 and 2, the individual segments are spaced at a certain location side by side so that they lie on the underside (filling and venting ports upwards and the discharge ports towards the water).

The best wall impermeability is achieved by having the segments close to the lower edge of the side faces. The closer they are assembled together, the better the impermeability is achieved. If only a longer segment than the size of the space is available in the enclosure, the longer segment can also be 'bent' upwards and 'tapped' into the corner to adjust the tightness.

Basically any water source, various types of water pumps from rivers or other sources, fire or other tanks, fire hydrant connections, water pipes and the like can be used to fill the segments. The connection to the filler neck 3 is made with the fire hose "C". In case of emergency, the segment can be filled with a thinner hose without a connection end, inserted through the filler neck directly into the interior of the bag.

It is possible to fill several segments at the same time (according to the available technique) or gradually one part of the wall after the other. In this method, the further parts must always be pushed under the side of the already full segment before filling. After filling, the individual segments are joined together by tying the ropes 2 through the metal loops 6 of the connecting tabs of the adjacent segments. If the natural conditions allow it, it is advisable to tie at least the extreme parts of the wall assembled to solid objects (concrete constructions, massive constructions, etc., which are not expected to be damaged by the flood) or to objects on an elevated place.

The segments according to example 2, which are usually used in individual pieces to secure objects, need to be statically secured, e.g. by binding to the protected object. In order to achieve the maximum sealing effect when applying these segments, it is necessary to place them properly with the bottom edge exactly against the wall to be sealed and to check or fill when filling. even adjust the position of the rising hips.

The segments of the invention are filled with water and not pressurized. Depending on the pump capacity, the filling time of one standard segment is 5 m long approx. 15 min. Once the segment is full of water (it is no longer possible to lift the water out of the vent 4), the water inlet from the source is stopped, the hose and both upper ports are disconnected - i.e. both the filler neck 3 and the bleed neck 4 are quickly closed by caps.

The wall made up of the segments according to the invention is safe up to a water column height of 0.8 m, while a maximum protective height of 0.9 m can be achieved in calmly spilled water at the lower reaches of the rivers, depending on the nature of the terrain and subsoil.

After the flood hazard has passed, the entire flood wall is easily removed. The discharge ports 5 or 8 are opened for the individual segments. and fillers 3, resp. venting ports 4 and water are allowed to drain. The individual segments are released by untieing the connecting ropes 7 and transported for placement or for further use.

Industrial usability

The segments according to the invention and the walls constructed therefrom find application not only in floods and imminent floods (wherever, for example, sand bags are used), but also in normal situations, e.g. when gardening a part of the watercourse "imitation" (when repairing the bottom or shore, etc.) The single segments and the walls constructed therefrom are not intended to be placed directly perpendicularly against a strong water jet. In this case, it is necessary to use a double assembly.

Filling the segments with water can be done by pump directly from the river, fire tank, etc. with the help of conventional fire brigades.

The segments according to the invention permanently resist the action of drinking, service and waste water, which according to water management standards can be discharged into watercourses. They also resist sewage from the flooded flooded canals and septic tanks. Depending on the concentration, they partially resist aggressive liquids and petroleum products. For these media, the segments according to the invention can be used as collection bags, but only in the short term if necessary, e.g. in accidents etc. In this way of use, the segments should be emptied as soon as possible and considered to be dedicated - i.e. discard them after use.

Flood walls from segments according to the invention can be placed on virtually any subsoil. Especially recommended is placement on paved ground - concrete, tiles, asphalt, etc. If the conditions of the flood situation allow it, it is advisable to clean the wall space from sharp and similarly dangerous objects. Unless necessary, it is not advisable to place the segments on a too slippery surface to prevent them from slipping, or to sand or gravel substrates to avoid washing them with water.

Claims (7)

PATENT CLAIMS A flood-resistant wall segment based on a water-filled bag, having a domed shape in the filled state above the base, defined by a shell in the form of at least one convex surface and integrally connected planar faces, the opposite portions of the inner wall of the shell are connected by at least one stabilizing partition characterized in that the ratio of the rectangular projection of the width (s) of the segment (1) to the rectangular projection of its height (v) is in the range of 1.5: 1 to 3.5: 1, the segment (1) being at the apex of its arched having at least one filling nozzle (3) and at least one venting nozzle (4) and then at least one discharge nozzle (5) in the heel region, all these nozzles (3, 4, 5) being provided with unified fire-fighting couplings, and 2) the segment (1) is made of a fabric with a double-sided application of an elastomeric mixture based on an ethylene-propylene-diene combination butadiene styrene rubber. A flood wall segment according to claim 1, characterized in that its sheath (2) is provided with connecting lugs with metal eyes (6) in the end regions. Flood wall segment according to claim 1, characterized in that at least four handling ears (8) are connected to its sheath (2). A flood wall segment according to claim 1, characterized in that the double-sided fabric of the elastomeric composition is a plain weave fabric having a tensile strength determined on a 50 x 200 mm sample in the warp direction of 1,800 to 2,300 N and in the weft direction 2,000 to 2,300 N. The flood wall segment of claim 4, wherein the fabric is a polyester fabric with a basis weight of 140 g / m ± 10%. A flood wall segment according to claim 1, characterized in that the coating composition of the sheath (2) is an elastomeric composition based on a combination of ethylene-propylene diene rubber and butadiene-styrene rubber having a tensile strength of at least 10 MPa, elongation at least 400%, permanent compressive deformation not more than 50%, low temperature resistance up to - 25 ° C and high temperature resistance up to 70 ° C. The flood wall segment according to claim 1, characterized in that the deposits of the elastomeric sheath mixture (1) have a thickness of 1.2 to 1.4 mm.