SU1483000A1 - Shore-protecting through-going spur - Google Patents

Abstract

This invention relates to hydraulic structures for protecting river banks. The purpose of the invention is to increase the reliability of operation by reducing the washing of the arrays and increasing the efficiency of the flow energy quenching due to the regulation of the spur throughput. The coastal shielding spur consists of arrays 1, in which corridors are made with flow-guiding shields 4 fixed on axes 5 and fitted with latches 7 ensuring their independent installation at any given angle. With the boards 4 lowered, the bottom erosion of the bottom 3 is reduced in the area of the spur. When the shields 4 are installed in a position close to the vertical, the corridors overlap, thus ensuring sediment deposition behind the spur. Installing the shields 4 at intermediate positions by varying the size of the vortex drum provides control over the degree of sediment capture, improving shore protection. 2 hp f-ly, 2 ill.

Description

(21) 4191066 / 29-15

(22) 12/18/86

(46) 05/30/89. Bul 20

(71) Ukrainian Institute of Water Engineers

(72) V.D.Shuminsky, E.A.Leonova, N.V.Razumenko and O.A.Miroshnichenko

(53) 627.421 (088.8)

(56) USSR Author's Certificate No. 859529, cl. Е 02 В 3/02, 1978.

USSR Author's Certificate No. 1100359, cl. Е 02 В 3/02, 1983.

(54) SECURITY FRAMEWORK

(57) The invention relates to hydraulic structures for protecting river banks. The purpose of the invention is to increase the reliability of operation by reducing the washing of the arrays and increasing the efficiency of the flow energy quenching.

adjusting the spur coefficient of penetration. The coastal shielding spur consists of arrays 1, in which corridors with flow-guiding shields 4 are fixed, fixed on axes 5 and equipped with clamps 7, ensuring their independent installation at any given angle. With the boards 4 lowered, the bottom erosion of the bottom 3 is reduced in the area of the spur. When the shields 4 are installed in a position close to the vertical, the corridors overlap, which ensures the deposition of the pumps behind the spur. Installing dit 4 at intermediate positions by varying the size of the vortex аль8 ring provides control over the degree of seizure of the pumps by the flow, improving the protection of the shore. 2 з.п, ф-л, 2 Il.

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31483000

The invention relates to hydraulic structures for protecting river banks and slopes of soil structures, as well as straightening river beds.

The aim of the invention is to increase the reliability of operation by reducing the undermining of the arrays and increasing the efficiency of the flow energy quenching due to the regulation of the spur penetration coefficient.

FIG. 1 shows a plan of one of the spur corridors; figure 2 - section aa in figure 1.

The shore protection spur includes arrays 1, in which corridors 2 are located, 3 rivers located above the bottom of the river. In each of the corridors 2, a flow-directional shield 4 is installed, movably mounted on an axis 5 mounted on the bottom 6 of corridor 2. The shields 4 are equipped with clamps 7, ensuring their independent installation on any given angle from O

up to 180, counting from the bottom 6 of corridor 2. Each shield 4 is fixed on axis 5 with its lower edge, and its length exceeds the distance from axis 5 to the upper face 8 and the lower edge 9 of array 1. As the research results show, the device is most effective in case the axis 5 is installed at a distance equal to 1/3 - 1/2 of the length of corridor 2, counting from the upper face 8 of the massif 1. The shields 4 can be made curved, convex in the downstream direction.

Shore protection spur works as follows.

With small water levels in the river corresponding to the passage of small flood expenses, the flow is passed through the spur with fully lowered shields 4. In this case, depending on the specific conditions, part or all of the shields 4 can be lowered both towards the high side 8 and the downstream side 9 (the positions of the UE and I in Fig. 2). Boards 4, lowered towards the upstream face 8, reduce the erosion of the bottom 3 on the upside side of the spur, contribute to sedimentation of sediment in front of the spur, affect the flow of shield 4 outside the structure, improve the condition of flow entry to corridors 2. Boards 4, lowered towards the lower edge

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reduce the erosion of the bottom 3 behind the spur, moving away the place where the flow is to the bottom 3 downstream. When passing through the flow spur, the level of which exceeds the level of the bottom 6 of corridor 2, the shields 4 are installed in intermediate positions (positions II, III, IV and Y in figure 2). In this case, as studies show, the optimum angle of inclination of the shields is 15-40, counting from the bottom 6 of corridor 2 from the downstream. The installation of the shields 4 at these positions improves shore protection due to the increase in the volume of sediment transported to it, and also provides the possibility of changing the direction of their movement, which is explained as follows. The leakage of the flow moving along corridor 2 onto the shield 4, which is an inclined barrier, leads to the formation of a vortex roller. Change the slope of the shields 4. it is possible to change the geo- t

metric dimensions of the drum, the intensity of water movement in it, and hence the degree of seizure of bottom sediment and suspended sediment. The direction of flow behind the spur is determined by the change in throughput of corridors 2 along the length of the spur, depending on the angle of each shield 4. Therefore, by varying the angle of the panels 4 along the length of the spur, it is possible to change the direction of movement of the sediment drawn. In addition, the protruding part of the shields 4 extending beyond the downstream face 9 helps to reduce the force effect of the flow on the bottom 3 from the downstream side of the spur.

If the shields 4 are curved, the trampling effect of the shields 4 increases, the dimensions of the vortex drum behind the spur when installed in the T-V positions), and also provides a smoother flow of entry to the corridors 2 (position Y1).

Claims (3)

1. Coast protection through spur, including arrays with They are located along the corridors located above the bottom of the river bed, in which flow-directional axes are installed on the rotation axes. These shields are characterized in that, in order to increase the reliability of operation by decreasing the arrays washout and increasing the efficiency of quenching the energy of the stream through the spur, it is provided with clamps for the position of the flow-control panels, ensuring their independent installation at any given angle from 0 to 180 °, counting from the bottom of the corridor, and Yu J And figure 1 Each shield is attached by a lower edge to the axis of rotation, which is installed at the bottom of the corridor, and is made longer than the distance from the axis of rotation to the upper and lower edges of the array. 2. Spor according to claim 1, characterized in that the fixators are made in the form of removable pins installed in the walls of the corridors. 3. Spor according to claim 1, which differs from the fact that the shields are made curvilinear, convex toward the downstream. I yJ