RU2742835C1 - Mobile barrier module flood protection dam - Google Patents

Abstract

FIELD: hydraulic structures.SUBSTANCE: invention relates to flood prevention equipment intended for fast stop and restraint of water flows, water lifts, as well as for erection of dam during protection against flood as temporary structure. Task of the proposed technical solution is to eliminate disadvantages inherent in known structures, namely, by using a fixed on the ground power arched shell of a flat plastic sheet, coiled in form of a semi-cylinder or half of the lateral surface of the truncated cone, which senses the head of water, exclude: a) the need for continuous processes of filling with water and emptying after using sleeves or reservoirs inherent to water-inlet dikes; b) the need for a structurally complex and material-intensive rigid metal frame with hinges and additional stiffness ribs inherent in the mobile sectional dam. Power arc shells are assembled in the form of a series circuit of barrier-modules attached to the ground. Waterproof film is laid on the surface of the barrier-modules, the lap joints of which are sealed by means of a water-resistant sealant or multiple folding of the connected edges of both films at the junction point.EFFECT: enabling to overcome disadvantages inherent in known structures.1 cl, 5 dwg

Description

The invention relates to flood prevention techniques designed to quickly stop and contain water flows, water rises, as well as for the construction of a dam for flood protection as a temporary structure.

In practice, the best known and widely used mobile barrier is the sandbag. Filling the sandbags, transporting them to the site and placing those bags to build a barrier, then removing the sandbags after the flooding is over, is costly, very time consuming and time consuming.

Currently, the following types of pre-fabricated water-filled dams are used:

1. Containers of the pre-fabricated dam (KBD) "CHANCE" are a container in the form of a cube, sewn from durable fabric, with a wooden frame. Each container is equipped with four load-carrying elements sewn into the corners, made of sling tape.

2. A water-filling dam is a closed sleeve with an outer sheath made of synthetic fabric and two inner sealed chambers made of multilayer polymer films.

The dams are equipped with unloading and filling outlets, couplings with plugs for separate connection of a pump or a motor pump and drainage outlets for draining water.

The shell contains slings for fixing the filling dams on sloped surfaces and for attaching them with cables. During transportation, dams are rolled up and packed in wooden boxes or fabric covers.

3. One of the solutions is disclosed in the patent for invention RU 2 632 912 C2, according to which a mobile barrier flood protection system consists of water-filled water blocks connected to one another and supporting structures. The supporting structures have at least two triangular supporting frames and one brace. The supporting frames are connected to one another in pairs in their upper parts by a spacer. The water blocks are placed in supporting structures and are attached to these supporting structures. The water block is made of one solid rectangular piece of flexible material, divided into three parts by longitudinal folds, in a state filled with water has the shape of a triangular prism, while the surface of the middle foldable part contacts the ground, and is open along its upper edges. The side ends of the water block are not completely closed.

4. Water-filling dams used in Germany are known, the modules of which are rectangular plastic sheets rolled into a cylinder, equipped with special locking devices to keep the cylindrical shape, these modules in the form of cylindrical barrels are placed

vertically, a plastic bag is placed inside and filled with water. The modules are placed close to each other, on their walls from the side of the incoming water, there are overlapped canvases made of strong plastic film, the width of which is about twice the height of the barrels, so the excess part of the web is laid on the ground and pressed to the ground, for example, by rock fill, soil or other way.

Disadvantages of water-filled dams.

1. High cost of materials;

2. Large expenditures of time for filling the tanks with water due to the need to use tank trucks, since the preliminary installation of a protective dam is made when the water is at a considerable distance.

3. In the case of water-filled hose dykes, an unresolved problem is the impossibility of completely removing water from the hose - the water remaining in the hose during storage during winter frosts leads to the formation of ice, which often causes rupture of the sleeve shell.

The closest solution to the claimed technical solution is a mobile sectional dam according to the utility model patent RU 142631 U1, which is two rigid rectangular frames rigidly fastened in the upper part at an angle, in the lower part of the frame are fastened to each other by at least one transverse profile , generally form a triangular prism, while the side facing the water is waterproof, and the bases of both frames are rigidly fixed to the ground. The mobile sectional dam consists of identical sections. The gaps between the sections are connected by overlays made of waterproof material, fixed to the waterproof sheets, for example by clamping strips.

Such a dam with sections rigidly fixed to the ground and receiving the pressure of water by rigid walls of the sections requires less time to bring the dam into working condition, since it eliminates the need for a long process of filling the sleeves or tanks with water, which is inherent in water-filled dams.

Disadvantages of a mobile sectional dam:

1. The frame of the mobile sectional dam is made of shaped steel pipes, which leads to its large mass - a section 3 meters long and 2 meters high weighs about 150 kg.

2. The frame of the mobile sectional dam in order to ensure folding has hinges, additional stiffeners and is an unnecessarily complex welded metal structure, which requires the cost of electricity, welding consumables and paint and varnish coating to ensure the corrosion resistance of the frame.

3. Fastening of pads made of waterproof material to eliminate gaps between the sections by means of clamping rails leads to unnecessary complication of the structure and cannot ensure reliable tightness of the joint.

4. The gaps between the sections can vary in shape and size depending on the unevenness of the terrain at the location of the dam, which also significantly complicates ensuring the tightness of the joint.

The task of the proposed technical solution is to eliminate the disadvantages inherent in known designs, namely, by using a power arched shell fixed on the ground made of a flat plastic sheet rolled in the form of a half-cylinder or half of the lateral surface of a truncated cone that receives the water pressure, exclude.

a) the need for lengthy processes of filling with water and emptying after using hoses or containers inherent in water-filled dams;

b) the need for a structurally complex and material-intensive rigid metal frame with hinges and additional stiffeners inherent in a mobile sectional dam.

The essence of the invention is illustrated by drawings, where

in FIG. 1 shows a module of a mobile modular dam in isometric;

in FIG. 2 shows a cross-section of the dam module;

in FIG. 3 shows the unfolded shell of the dam module .;

in FIG. 4 shows a longitudinal section of a modular dam .;

in FIG. 5 is a top view of a modular dam .;

The technical essence of the proposed solution lies in the fact that the module of the mobile barrier dam is a power arched shell 1 (Fig. 1) of a flat plastic sheet rolled in the form of a half-cylinder or half of the lateral surface of a truncated cone, which receives the pressure of water through a waterproof film laid on its surface 6 (Fig. 2; Fig. 5).

To build the module are used:

1. Sheets of plastic in the form of two rectangles of different lengths or one sheet in the form of an isosceles trapezoid (Fig. 3), with a short base a, a long base 6 and a height b, along the axis of symmetry of which, coinciding with the fold line, one part is glued with a strip Velcro fasteners 4 (Fig. 1);

2. Two or more bandages 2 (Fig. 1) in the form of a closed belt loop of a certain length for each case.

When assembling the arched module to give an arched, arched shape, a flat plastic sheet is bent with an arc and two or more bandages 2 are put on it (Fig. 1) in the form of closed belt loops, the edges of the sheet are released and with elastic unbending of the sheet, the bandages 2 are tensioned (Fig. 1) in such a way that the upper part of the bandages 2 (Fig. 1), covering the arch, takes the shape of a circular arc, and the lower,

the stretched part of the bands 2 (Fig. 1) takes the form of a chord of this circle, as a result of which the plastic sheet takes the form of a half-cylinder or part or half of the lateral surface of a truncated cone, forming an arched shell 1 (Fig. 1). In order to securely fix the bands 2 on the surface of the arched module, slots 7 (Fig. 1) can be made at both edges of the arched shell 1 (Fig. 1) through which the bands 2 (Fig. 1) are passed during the assembly of the arched module.

On the outer surface of the arched shell 1 (Fig. 1) along the axis of symmetry, one part of the Velcro fastener 4 (Fig. 1) is previously glued with a strip by a strip. The counterpart of the velcro strip 4 (Fig. 1) is pre-glued along one edge of the waterproof film 6 (Fig. 2).

Thus, after bending rectangles or an isosceles trapezoid made of a plastic sheet around the axis of symmetry and tightening its sides with loops of two or more bandages 2 (Fig. 1), a module with an arched shell in the form of a half-cylinder is obtained, or a part or half of the lateral surface of a truncated cone with an arch a smaller radius from the side of the base a (Fig. 3), and with an arch of a larger radius from the side of the base 6 (Fig. 3) and with a length b (Fig. 3).

For the assembly of a mobile barrier modular dam are used:

1. Modules, the arched shell 1 (Fig. 1) of which has the form of a half-cylinder, or part or half of the lateral surface of a truncated cone, kept from straightening by using two or more bandages in the form of closed belt loops, encircling the arched power shell from the outside, with glued on the axis of symmetry of the arch from the outside with a strip of one part of the Velcro 4 (Fig. 1), the number of which is determined by dividing the required length of the dam by the length of the module (Fig. 3);

2. Boards 3 (Fig. 2), with holes for crutches, three pieces for each module;

3. Crutches 5 (Fig. 2) for fastening boards 3 (Fig. 2) to the ground, smooth, in the form of a drill or an anchor bolt, depending on the type of soil, or the material of the surface on which the dam is assembled;

4. Waterproof film 6, along one edge of which the counterpart of the Velcro 4 is glued (Fig. 1).

5. Waterproof sealant.

The assembly of the mobile barrier dam is as follows (Fig. 4, 5). The assembled module is laid on the ground with an arch of the shell 1 (Fig. 1) top, inside the arch of the module, on top of the bandages 2 (Fig. 1), two boards 3 (Fig. 2) are placed on the ground close to both sides of the arch and are fixed to the ground with crutches 5 (Fig. 2). Thus, the module is securely attached to the ground. From the outer side of the arch, opposite to the water (Fig. 2), close to the wall of the arched shell 1 (Fig. 1), the third board 3 (Fig. 1) is laid on the ground and fixed to the ground with crutches 5 (Fig. 2).

The next module is inserted with an arch of a smaller radius into the arch of a larger radius of the fixed module to a certain depth while maintaining a gap between the walls of the modules, so that by tilting the module vertically or turning the module horizontally by a certain amount, determined by the size of this gap, to compensate for irregularities and changes in the relief of the earth's surface, after which also fixed to the ground in the above way. Repeating these operations, a sequential continuous chain of arched modules fixed to the ground is assembled, forming a dam.

In the case of using arched modules in the form of a half-cylinder, it is necessary to have an equal number of arched modules of a smaller radius and a larger radius, the assembly of the mobile barrier dam is performed alternately.

On the upper part of the dam made of arched modules, where there is one part of the Velcro fastener 4 (Fig. 1), one edge of the waterproof film 6 (Fig. 2) is attached, where a strip of the counterpart of the Velcro fastener 4 is glued (Fig. 1) , the waterproof film 6 (Fig. 2) is laid on the walls of the arched shell 1 (Fig. 1) of the modules, for example by unwinding the roll, while the other edge of the waterproof film 6 (Fig. 2) is laid on the ground with an overlap. When the roll of waterproof film 6 (Fig. 2) is completely laid in this way, a sealant layer is applied to the end edge of the waterproof film 6 (Fig. 2), the initial edge of the waterproof film 6 (Fig. 2) from the next roll is overlapped on the edge of the laid waterproof film 6 (Fig. 2) with a sealant, thus ensuring the tightness of the joint and the roll is unwound further in the same way, until it completely covers the entire length of the mobile modular dam. A part of the waterproof film 6 (Fig. 2), laid on the ground with an overlap, is pressed to the ground by burying the edge of the waterproof film 6 (Fig. 2) with sand, earth or rock-fill in order to exclude the destructive effect of wind on the laid waterproof film 6 (Fig. 2).

Sealing of the joints of the waterproof film 6 (Fig. 2) can be carried out in other ways without the use of a sealant, for example, by repeatedly bending the joined edges of both films at the joint.

The fastening of the waterproof film 6 (Fig. 2) on the arched shell 1 (Fig. 1) can be done in another way, without using the Velcro fastener, for example, using pegs piercing the waterproof film 6 (Fig. 2) and inserted into the pre-made holes on the side of the arched shell 1 opposite to the water (Fig. 1).

Claims (3)

Mobile barrier modular flood protection dam, characterized in that the water pressure is absorbed by power arched shells bent from a flat plastic sheet, barriers-modules attached to the ground surface, assembled in a series chain through a waterproof film laid on the surfaces of these modules, overlapping joints which are sealed with: a) waterproof sealant. b) multiple bending of the joined edges of both films at the junction.

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