SU1606586A1 - Flexible dam - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to hydraulic engineering, in particular to dams of flexible materials. The purpose of the invention is to reduce the construction time and increase the reliability of work. Panels 1 are made of variable width, increasing towards the lower edges, with partial overlap. The tensioning system is made in the form of interconnected parallel cables 3 and 4 with stoppers 7 installed with the possibility of movement relative to each other. Cables 3 and 4 pass through the holes in the opposite corners of the upper edges of the panels 1. 3 Il.

Description

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The invention relates to hydraulic structures, and in particular to dams of flexible materials.

The purpose of the invention is to reduce the construction time and increase the reliability of work.

FIG. 1 shows an axonometric projection of the dam from the downstream; in FIG. 2, a schematic of the installation of the canvasses: the poor on fig.Z - the position of the panels at the time of passage of water.

The dam includes vertical panels 1 fixed by lower edges along one forming 2, and a tension system in the form of parallel lower 3 and upper 4 cables interconnected through blocks 5 and passing through openings 6 in opposite corners of upper edges of panel 1. To adjust the angle open the panels on the cables 3,4 there are stoppers 7.

The dam works as follows. After mounting the dam panels 1 to the generatrix 2, the lower cable 3 passes through the holes 6 from one edge of the panels 1, and the upper cable 4 from the other edge 4. wa which then put and fix the stoppers 7. By changing the free running angles of the upper edges of the panels 1 between the stoppers 7 on the cables 3 and 4 change the angle of opening of the panels 1 for the passage of water and thereby regulate the discharge flow and the frequency of discharges. Two forces will act on the panel 1: shifting (tending to separate the panels) acting on the non-overlapped part of the panels 1 (area A), and pressing (tending to press the edges of the panels 1 to each other) acting on the closed part of the panels 1 ( region B). The opening of the panels 1 for the passage of water occurs when the shear force is exceeded by the non-overlapped part of the panels 1 (area A) above the pressing force on the closed part (area B). Changing the custom mark is carried out by adjusting the tension of the cables 3 and 4. At the time of filling the edge of the panels 1 under the pressure of water, they are adjacent to each other and, accordingly, the cables 3 and 4 too. When the shear force reaches the region A, which is greater than the pressing force to region B, one edge of the panels 1 moves away and, through the stoppers 7 to the lower cable 3, displaces it, which simultaneously displaces the cable connected with it through the blocks 5, turning

the other edge of the panels 1 by means of the stoppers 7. As a result, a curvilinear triangular space increases from bottom to top, through which

Discharged flow passes. After the water is discharged, the value of the shearing force decreases and under the action of the pressing force on the region B of the panel 1 returns to its original position; Kra

panels 1 are displaced through stoppers 7 by an upper cable 4, which through blocks 5 displaces cable 3 and, accordingly, the other edges of panels 1.

The construction of the dam makes it possible to manufacture and install the elements of the dam, using its own material and technical base, to use used materials (for example, conveyor belt) as panels.

tape), which significantly reduces construction time and the estimated cost of the entire structure. Making a dam from individual panels allows for the prompt replacement of damaged panels. Behind

the use of simple components in the manufacture and operation of elements increases the reliability of operation by 20–30% and the construction itself is simplified. The fastening system of the upper edges of the panels allows you to automate the discharge and accumulation of water. The discharge of water through separate gaps prevents the erosion of the bottom in the downstream, which ultimately increases the overall stability of the dam.

Claims (1)

Invention Formula A dam is flexible, including panels located along the channel width and fixed with lower edges to the bottom, and upper edges attached to a tension system made in the form of cables thrown over the blocks located on the banks, in order to reduce the time building and improving job reliability the panels are made of variable width, increasing towards the lower edges, and with openings in the upper corners and are set in one row with a partial overlap, and the tensioning cables are provided with stoppers, interconnected through the blocks with the possibility of parallel movement relative to each other and passed through holes made in the opposite upper corners of the adjacent panels.  / Sh.Shb 7 / (1.1 ... 1.2) 8 FIG. g Fig.Z