SU1761858A1 - Removable overflow dam - Google Patents

Abstract

Use: in hydraulic structures for raising the water level and adjusting it on small rivers. Substance of the invention: the pressure part of the dam is made in the form of a frame structure 1 of a multi-stage shutter consisting of several flat panels 3. The dam contains stopping devices 4. The lower part of the dam is made in the form of individual compartments provided with valves in the form of flat shields 8. The dam is mobile and can be installed in 4-5 places 7 muds during the spring flood.

Description

The invention relates to hydraulic structures, namely dams, which can be used to raise the water levels of certain sections of rivers in agriculture.

The purpose of the invention is to increase the reliability of the dam due to the possibility of adjusting the water levels.

In figure 1, 2, 3 shows the cross-sections of the dam during operation; figure 4 - the principle of operation of a flat shield; Figure 5 shows shield attachment points; figure 6 is a front view of the dam; figure 7 - plan of the dam.

The dam has a frame structure 1, a multi-stage shutter 2 consisting of flat panels 3, a locking device 4. Flat panels are provided at the corners with semi-axes 5 fixed in slots 6 made in nodes of the frame structure. The lower part of the dam is made in the form of several separate compartments 7 s

mounted shutter in the form of a flat shield 8.

The dam works in the following way: in the selected part of the river, the dam is moved by a self-alloy or by a tug. At the site of the dam, the compartments are filled with water, the dam is completely submerged, due to the location of the compartments along the stream and the passage of water through the compartments, the level of the subterranean water formed above the threshold of the compartments decreases. The locking device 4 is opened (see FIG. 4), the flat panel is closed due to its weight and water pressure. The lower part of the flat panel is locked onto the lower locking device by means of projections semi-axes 5 (see FIG. 4). thus, the shields form a solid face, creating a water backwater (see FIG. 2). As the need to regulate the water can be closed a certain number of shields. After the end of the period of backwater or regulation of water, proceed to dismantle.

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zh. To do this, they act according to the same principle of the locking device as previously used. The locking device 4 is opened (see Fig. 4), the flat panel under the action of water pressure and its own weight is opened (see Fig. 3), thereby ensuring the passage of water through the structure, this, in turn, facilitates the process of dismantling the dam. The lower part of the valves, located between the compartments, works like everyone else. Pumped out water from the compartments, the dam floats. Next, install flat shields 3 in the original position (see figure 1) and move the dam to a new location.

Example. Mobile overflow dam can be used on small non-navigable and timber floating rivers, for example, on tributaries of the Amga and Aldan rivers.

For this purpose, special reinforced concrete structures are built at the river in 3-4 places, which serve as the dam site. During the spring flood, a dam is positioned between the coastal walls and the reservoir is filled with water, the dam is submerged. The locking device is turned on, the blinds are closed, water is created. Then the blinds open, the water level

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decreases. The water is pumped out of the reserve; the dam floats up. Install blinds to their original position and move the dam to a new location.

The advantages of the dam are: simplifying the process of regulating the water; decrease in metal consumption; speed of installation, dismantling and moving to a new place.

Claims (1)

Claims Mobile, overflow dam, having a frame structure divided into compartments, a screen consisting of separate flat panels, characterized in that, in order to increase the reliability of the dam due to the possibility of adjusting the water level, flat panels are provided with corners in the corners - semi-fasteners fixed in sockets made in the nodes of the frame structure, and the frame structure is equipped with stop devices installed in pairs along the ends of the span covered by the shield, while the base is raft The ins are made in the form of separate lower compartments, the space between which is covered by flat shields. /// ////////// /// // // // /// 77/77 /// /// /// // HC 777-777-77777 6 five.- / Ј # flue 2 to Xji H) I k FIG. 6