RU1789589C - Antitorrent equipment - Google Patents

Description

c) the height of the other side is greater than the depth of the expected catastrophic mudflow.

The claimed design meets the criterion of a positive effect, since in comparison with the prototype:

a) the concave-curved shape of the tray both increases the reliability of the structure and maintains the hydrological regime of the river;

b) the presence of an arcuate flow-guiding wall, which is a continuation of the side adjacent to the slope, significantly increases the effect of damping the energy of mudflows and, the greater their flow rate, the greater the effect of the structure;

c) the height of the other side is greater than the depth of the expected catastrophic mudflow, than its separation into two parts is provided, and the presence of this side in combination with an arcuate flow-guiding wall creates the effect of self-extinguishing the mudflow energy.

In hydraulic engineering construction, designs are known which are semicircular, parabolic, trapezoidal trays (I.I. Agroskin et al. Hydraulics, M., Gosenergoizdat, 1954, p. 484), but in our design the tray is concave-curved a surface with a section that varies over the entire length (see Figs. 4 and 5). In addition to that indicated for all known structures, the flow guide walls are installed in the upper pool, at the inlet sections of the structures and serve to direct the flow into the structure, whereas in our case the flow guide wall is a continuation of the side adjacent to the slope and serves to change the direction of the part a stream separated by the side (3) in order to influence the remaining part of the stream passing in the part of the channel that is free from the structure.

Thus, in all known technical solutions, we did not find any signs similar to the distinguishing features of the present invention, which gives us reason to conclude that this solution meets the criterion of significant differences.

In FIG. 1 shows a general view of the structure; in FIG. 2 - his plan; in FIG. 3,4,5-longitudinal and transverse sections.

The anti-mudflow construction contains

(1) - a tray with a concave-curved bottom surface, (2) - a side adjacent to the slope of the channel, (3) - an inner side, the height of which is greater than the depth of the catastrophic mudflow. Side (2) adjoining

to the slope of the channel, it has a continuation of an arcuate flow-guiding wall (4).

Anti-mudflow device operates as follows.

When passing through the mudflow channel, the board (3) divides it into two parts. The mudflow in the tray (1) acquires a spiral-shaped trajectory, which is facilitated by the concave-curved shape of the bottom of the tray (1). When the flow reaches the arcuate flow-guiding wall (4), it fits into it and smoothly changes the direction of movement, providing minimal impact on the arc-shaped flow-guiding wall (4). After that, mudflow is discharged from the structure and its interaction with the flow passing through the part of the channel that is free from the structure, i.e. there is a quenching of energy. In addition, in order to increase the effect of energy suppression, a cascade arrangement of the structure in a checkerboard pattern can be used, provided that the arcuate flow-guiding walls (4) are directed to the longitudinal axis of the channel.

The dimensions of the device and the arrangement of cascades are selected depending on the power and type of expected mudflows, from the natural topographic conditions of the area. The technical and economic advantages of this energy carrier (device) as compared with the prototype are that it is possible to use the structure without failures and repeatedly under natural conditions, which eliminates the additional cost of repairing the structure. In addition, a great advantage over analogue and prototype is that solid river runoff does not accumulate in the upper part of the structure. Thereby not

the natural hydrological regime of the river is violated and the device can be installed in any part of the watercourse regardless of natural and topographic conditions,

Claims (1)

SUMMARY OF THE INVENTION Anti-mudflow device, comprising a through structure with increasing height along the direction of travel, made in the form of a reinforced concrete box adjacent to the channel and occupying part of its width, characterized in that, in order to increase the efficiency of quenching the energy of the mudflow and preserve the hydrological regime of the watercourse, reinforced concrete the box is made in the form of a parabolic springboard, equipped with a curvilinear flow-guiding wall at the exit with rotation towards the center of the channel, at ohm bead lotka- springboard nezatopl emymi performed during skip catastrophic mudflow t cd / cc cc cc cc R FIG. 4