An induction and repelling integrated dam fish passing device and its application method

Abstract

The invention discloses an inducing and driving integrated type dam fish passing device and a using method thereof, and belong to the field of water conservancy and hydropower engineering and ecological environmental protection engineering. The device comprises a valve a, a valve b, a valve c, a water supply pipeline, a pressure reduction annular pipe, an induction pipeline, a comprehensive pipeline, a screw, a screw support, a driving disc, an end plate and a screw driving device, one end of the comprehensive pipeline is arranged on the upstream of a dam, the other end of the comprehensive pipeline is arranged at the downstream of the dam, the water supply pipeline is arranged on the upstream of the dam, and the induction pipeline is arranged on the downstream of the dam. According to thedevice and the method, by utilizing the habit of the fish school for counter-current migration and combining the actual engineering characteristics of water retaining buildings such as the dam, the pressure water flow in the upstream of the dam is subjected to self-flowing pressure reduction and then flows into the downstream river channel of the dam through the pressure reduction annular pipe, and the fish school for counter-current migration in the downstream is induced and driven to the upstream through the screw driving device; and the remarkable advantages that the occupied area is small, the investment is saved, the effect is fast, the efficiency is high, the water utilization rate is high, installation, operation, maintenance and overhauling are convenient and the like are achieved.

Description

technical field [0001] The invention relates to the fields of water conservancy and hydropower engineering and ecological environmental protection engineering, in particular to an induction driving integrated dam fish passing device and a use method thereof. Background technique [0002] Due to the needs of various projects such as power generation, irrigation, landscape, and water conservancy, people often build water-retaining structures such as dams in rivers and other water systems. These water-retaining structures often hinder or block the migration of migratory fish and other aquatic organisms in the river. Cause direct or indirect damage or even destruction to aquatic organisms in the original river and other water systems. With the continuous improvement of my country's water energy and water resources development, more and more various barrages and other water-retaining structures will be built on the main stream and tributaries of the river. Although people have b...

AI Technical Summary

Problems solved by technology

At present, artificial fishways are generally used in engineering. Although some parameters such as water flow velocity and flow rate cater to some migratory fish, the scale of the project is often large, the cost of construction and operation and maintenance are high, and the effect of fish passing is difficult to achieve the ideal state.

The traditional dam fish passage system usually adopts an artesian artificial fishway, which not only has a complex structure, but also occupies a large area, and the project cost is high, and its limitations are relatively large

Especially for dams with a water level difference of more than 50 meters between upstream and downstream, the traditional artesian fishway is almost difficult to realize. Even if it is barely realized, the construction scale and engineering investment are quite considerable. The more fatal flaw is that the fish passing effect is often unsatisfactory

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