Flow guiding engineering for river gate dam and spillway

Abstract

A diversion work for river gate dams and spillways comprises an integrated platform made of two segments; wherein, the inside wall of the first segment platform is an circular conical surface; the outside wall is a circular cylindrical surface; both the top face and the bottom face are planes; the inside wall of the second segment platform is a torsion face, and the outside wall is a tangential plane against the circular cylindrical surface of the first segment platform; both the top face and the bottom face are also planes. In installation, the tail of the transition torsion face of the second segment platform is tangentially connected with side walls of an inlet side hole on a river gate dam or a spillway. The diversion work can effectively resolve the problem of transiversal shrinkage of water flow in front of inlets of the river gate dam and the spillway. To further improve water flow status, it is necessary to add a vertical guide dam; one end of the vertical guide dam is linked to the tail of the transition torsion face of the second segment platform; the other end is connected with the side wall of the river gate dam or the spillway inlet side hole. In a plurality of projects, the first segment platforms can be extended to connect with the bank, for which the surrounded lands can also be utilized for other purposes.

Description

technical field [0001] The invention belongs to diversion facilities used in water conservancy and hydropower projects, in particular to a diversion device used before the entrance of river gates and dams and spillways. Background technique [0002] In the design and layout of flood discharge gate holes in water conservancy and hydropower projects, since the river section where the hub is located is relatively wide, the discharge gate holes are often arranged in the center of the river channel, which only occupies a part of the river section, and the rest is the dam body. Under normal circumstances, when the side hole flows through, the lateral contraction of the water flow is often very severe, and the flow state of the water flow is not good, which will obviously reduce the discharge capacity of the gate hole, and also affect the transportation of sediment, resulting in an increase in the amount of sediment in front of the dam. . Contents of the invention [0003] The p...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a new type of diversion tool to solve the problem of excessive lateral shrinkage of the water flow in front of the river sluice dam and the entrance of the spillway, and at the same time improve the flow state of the water flow in front of the gate and the entrance of the spillway and reduce the deposition of sediment quantity

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