Winding type fishway

Abstract

The invention belongs to the technical field of hydroengineering and provides two winding type fishways. Each winding type fishway comprises side walls, a base board, partition boards and guide boards, wherein the side walls are located on the two sides of the base board, the partition boards and the guide boards are arranged on the inner walls of the side walls, the fishway is divided into a plurality of pool chambers through the partition boards and the guide boards, and all the pool chambers are communicated with one another. The first fishway is arranged on a mountain on the side of a dam, the downstream end of the first fishway is located underwater in the downstream river channel of the dam, the upstream end of the first fishway is located underwater in the downstream river channel of the dam, and the shape of the first fishway is spiral or in a screw-like shape. The second fishway is composed of a first section, a third section and a second section, wherein the first section is located on the surface of the dam body, located on the downstream side, of the dam, the third section is located on the surface of the dam body, located on the upstream side, of the dam, the second section is located in the dam body and enables the first section and the third section to be communicated with each other, the downstream end of the second fishway is located underwater in the downstream river channel, the upstream end of the second fishway is located underwater in the upstream river channel, and the shape of the fishway is in the shape of a broken line.

Description

technical field [0001] The invention belongs to the field of water conservancy and hydropower engineering, and relates to a circuitous fishway, in particular to a high-head dam suitable for complex terrain conditions. Background technique [0002] With the gradual acceleration of the development of water conservancy and hydropower resources in my country, the degradation of natural fishery resources has become increasingly serious. The development of water conservancy and hydropower resources has endangered the rare and endemic fish in national nature reserves. With the strengthening of the awareness of social ecological environment protection, the research and construction of fish passing facilities has been paid more attention. Existing fishways are generally only suitable for low-head water conservancy projects with dam heights below 20-25m. The fish passing facilities used in medium-high head water conservancy projects mainly include fish gates, fish lifts, and fish cont...

AI Technical Summary

Problems solved by technology

But there is following deficiency in this fishway: (1) this fishway needs a column structure, and this column structure is built on rock foundation, and its height is suitable with dam height, and the height of column increases along with the increase of dam height, If the fishway is applied to a high dam, its height will lead to poor stability of the column. For example, the wind load will cause a large stress at the contact between the column and the rock foundation, which will cause problems in the stability of the entire column. , so this fishway is not suitable for high dams; (2) The elevation of the column body is equivalent to that of the dam body, and it needs to be built separately on the side of the dam, and a large amount of steel bars, concrete and other materials are needed to build the columns, and there is a problem of high cost; ( 3) The form of this kind of fishway is relatively simple, and it cannot be flexibly adjusted according to the conditions of the dam body and the mountain body

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