SU1532647A1 - Arch unit - Google Patents

Abstract

The invention relates to hydraulic engineering and can be used to protect the shores of ponds from wave action. The purpose of the invention is to increase the efficiency of the flow energy quenching and simplify the installation of the unit in the coastal zone of the reservoir. The arched blocks of the shore protection structure consist of transverse beams 2, on which rings 3 of elastic material are put, with curvilinear modular elements 4, which form an arch, rigidly attached to the ends of transverse beams 2. The arched blocks are installed in the required amount on the bottom 5 of the reservoir 6 along shore 7 and are supported by elastic rings 3 on the bottom 5. This provides improved contact with the microrelief of the bottom 5 and increases the stability of the blocks. With the presence of waves in the reservoir 6, each incident on the shore 7 wave meets in its path a coastal protection of blocks, is destroyed and penetrates through the cavity 8 and the holes of the front and rear edges of the blocks to the coastal zone of the reservoir 6. At the same time a significant part of the wave energy is lost. In addition, the use of blocks containing through holes and internal cavities 8 will improve the conditions for water exchange and will contribute to the development of flora and fauna in the coastal zone of the reservoir 6. 6 Il.

Description

The invention relates to hydraulic engineering and can be used to protect the shores of ponds from wave action.

The purpose of the invention is to increase the efficiency of quenching the energy of the flow and simplify the installation of the unit in the coastal zone of the reservoir.

Fig. 1 shows a side protection structure made of blocks, side view; 1, FIG 2, the same top view; Fig 3 is a block of a coastal protection, side view; in FIG. 4 - the same, from above; pas figs. 5 - modular element, side view; in fig. 6 - the same, top view.

The arched blocks 1 consist of transverse beams 2, representing, for example, metal pipes, on which rings 3 of elastic material, for example old car tires, are put on. Curved modular elements 4 forming an arch are rigidly attached to the ends of the transverse beams with 2 t nodes.

The arched blocks 1 are installed in the required amount at the bottom 5 of the reservoir 6, for example, parallel to the shore 7 in one line and resilient with N.H rings 3 to the bottom 5. This improves the contact with the microrelief of the bottom 5 and increases the stability of the blocks 1.

The arched block 1 of the shore protection works as follows.

In the absence of waves in the reservoir, due to the presence of internal cavities 8 and through holes 9 in the frontal and rear faces of the blocks 1 of the bank protection structure, unhindered water exchange takes place in the coastal zone of the reservoir 6.

In the presence of waves in the reservoir 6, each incident on the shore 7 wave meets in its path a coastal defense of blocks 1, collapses and penetrates through the cavity 8 and the openings 9 of the front and rear edges of blocks 1 into the coastal zone of the reservoir 6.

When the wave rolls back from the coastal zone, the water flows back into the reservoir 6 through the openings of 9 rear faces

hollows 8 and holes 9 front faces of blocks 1,

The principle of operation of the proposed unit g / - 1ppan on the phenomenon of dissipation of Qi with

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energy by friction.

When a wave rolls onto the frontal edge of block 1, the free movement of water, characterized by the free surface of the reservoir, becomes pressurized. In this case, the potential energy of the wave transforms into the kinetic energy of the pressure turbulent flow of water.

This flow encounters obstacles in the form of beams 2 with fitted rings 3 made of elastic material, is partially reflected from them and goes back into the reservoir in the form of a reflected wave.

The remaining part of the turbulent flow of water penetrates through the holes 9 of the front face into the internal cavity 8, and from there through the holes 9 of the rear face of block 1 into the coastal zone of the reservoir 6.

In this case, the turbulent flow spends part of its kinetic energy for compressing the elastic rings 3, and the rest of the energy for overcoming the friction.

When a turbulent flow of water enters the internal cavity 8 of unit 1, a change in the nature of the flow movement occurs, which causes whirlpool formations of various sizes, which increases the influence of friction forces and increases the loss of kinetic energy of the flow to overcome them.

At the same time, the hydrodynamic pressure in the cavity 8 rises as the stream enters it, and the excess water from the cavity 8 begins to penetrate through the openings 9 of the rear face of block 1 into the coastal zone of the reservoir, the flow of kinetic energy of the flow to compress the elastic rings 3 and overcoming friction.

Passing storm surges through the proposed permeable blocks causes their height and energy to decrease to sizes that are not dangerous for. protected area of the shore of the reservoir.

These significant changes in the parameters of the waves lead to a decrease in the speed and transport capacity of currents involving solid nanogues. The result is a stabilization of the underwater and surface coastal slope of the reservoir and the destruction of

coast from wave effects in the area protected by blocks 1.

In addition, the use of blocks 1 containing through holes 9 and internal cavities 8 improves the conditions for water exchange and contributes to the development of flora and fauna in the coastal zone of the reservoir 6.

Claims (1)

Invention Formula The arched block is predominantly a shore-protective structure, including side arches, set up with a bulge upward and having elements, and transverse beams attached to the ends of the side arches, characterized in that, in order to increase the efficiency of flow energy quenching and simplify installation of the unit in the coastal zone of the reservoir, the side arches are made of connected curvilinear modular elements that are fixedly attached to the ends to the ends of the transverse beams, the transverse beams and the supporting elements being made in the form of round rods with rings of elastic material strung on them. FIG. I figs Jl (rig 6 2 fzl / fig b