CN110725272A

CN110725272A - Fish luring method by using raw water of breeding station

Info

Publication number: CN110725272A
Application number: CN201910352872.7A
Authority: CN
Inventors: 姚军; 万晓安; 李晓波; 侯业楹; 张平俊; 王可; 杨文�; 李析男; 王洁瑜
Original assignee: Guizhou Water Resources Investment (group) Co Ltd; Guizhou Survey and Design Research Institute for Water Resources and Hydropower
Current assignee: Guizhou Water Resources Investment (group) Co Ltd; Guizhou Survey and Design Research Institute for Water Resources and Hydropower
Priority date: 2019-04-29
Filing date: 2019-04-29
Publication date: 2020-01-24

Abstract

The invention discloses a fish luring method by using raw water of a fish breeding station, which is characterized in that raw water of the fish breeding station near a fish facility is pretreated and then introduced into a fishway or a fish collecting corridor of a fish elevator, and the similar smell of fish in the raw water is used for inducing the upward migration of the fish, thereby achieving the purpose of fish luring. Therefore, the invention introduces the raw water of the fish proliferation station near the fish passing facility into the fishway or the fish collecting corridor of the fish elevator after the pretreatment, and induces the upward migration of the fishes by utilizing the similar breath of the fishes in the raw water by supplementing the raw water of the proliferation station in the fish luring water flow, thereby obviously improving the fish luring effect.

Description

Fish luring method by using raw water of breeding station

Technical Field

The invention relates to a fish luring method by using raw water of a breeding station, belonging to the technical field of fish assisted migration in ecological hydraulic engineering.

Background

A dam is built on a natural river, and a migration channel of fishes in the natural river is blocked. At home and abroad, remedial measures such as fishway construction, fish elevator and the like are taken. In the fish collecting galleries in the fishway and the fish elevator, the overflowing flow is small, and the flow direction of water flow is not easy to sense in the process that fishes go up from the downstream of a river in the direction opposite to the water flow direction, so that the inlets of the fishway and the fish elevator are difficult to find, and the fish collecting efficiency of the fishway and the fish elevator is reduced. Therefore, how to improve the fish collecting efficiency is one of the key technologies for designing fishways and fish lifts.

At present, more fish luring methods are proposed at home and abroad. The fish luring device mainly comprises different fish luring devices, fish luring agents with different bait proportions, color fish luring, oxygenation fish luring, sound fish luring, bionic fish luring and the like, for example, a bionic fish luring device simulating wing vibration or shrimp jumping of falling water insects in nature is introduced in the Chinese utility model patent with the publication number of CN204722080U, and a fish luring agent for fishing on a complex water surface is introduced in the patent with the publication number of CN 101040660. In addition, fish luring by sound waves, light, water flow and the like is also utilized, for example, a quick sound wave fish luring and catching box is introduced in a patent with the publication number of CN103444638A, and an LED fish luring illumination system with a visible light communication function is introduced in a patent with the publication number of CN 105119656A. The method for attracting more fish in the fishway and the fish elevator mainly comprises the steps of changing the geometric structure of the fish collecting gallery, attracting fish, supplementing water to the fishway, attracting fish by jet flow and the like, for example, a multi-stage overlapped arc fishway is introduced in the patent with the publication number of CN106702979A, and a method and a system for attracting fish by jet flow are introduced in the patent with the publication number of CN 104088261B.

Disclosure of Invention

The invention aims to provide a fish luring method by using raw water of a proliferation station, which can be suitable for a fishway and a fish collecting corridor of a fish elevator.

The technical scheme of the invention is as follows: a method for luring fish by using raw water of fish breeding station includes such steps as pretreating raw water of fish breeding station near fish facility, introducing it to fishway or fish collecting gallery of fish lifter, and using the similar smell of fish in raw water to induce the upward migration of fish.

In the method, the raw water pretreatment of the breeding station means that the raw water is naturally precipitated for more than 24 hours. The concentration of pollutants in the treated raw water is greatly reduced, the water quality of a fishway or river water body is not influenced, the raw water still retains the original habitat smell of fishes, and the fish luring effect is achieved.

The method comprises the steps of introducing raw water into a fishway or a fish collecting gallery of a fish elevator, conveying the raw water through a water pipe at a fish luring inlet of the fishway or the fish collecting gallery of the fish elevator according to the designed flow of the fishway or the fish collecting gallery, forming a row of round holes at the lower part of the water pipe, continuously adding raw water with a certain flow rate by utilizing the round holes at the lower part of the water pipe at a certain height in a natural spraying mode, wherein the total flow rate after adding the raw water is within the designed flow range of the fishway or the fish collecting gallery of the fish elevator, ① can be realized from the fish inlet to the downstream of a river, the concentration of the raw water is kept in a gradient from high to low, ② the raw water is supplemented into the fishway and the fish collecting gallery through the supplement of the raw water, the flow rate of the water is different from a natural river, the flow rate of the fish is adjusted to the favorite flow rate of the fish and the fish is more inclined to the fish collecting gallery according to the fish luring type, ③ supplements the raw water in a natural spraying mode at a certain height, on one hand, the oxygen charging effect of the fish collecting gallery can be played, and the water collecting effect of the fish luring can be played, and the fish is.

Due to the adoption of the technical scheme, the invention has the advantages that: the invention introduces the raw water of the fish breeding station near the fish passing facility into the fishway or the fish collecting corridor of the fish elevator after the pretreatment, and induces the upward migration of the fish by utilizing the similar breath of the fish in the raw water by supplementing the raw water of the breeding station in the fish luring water flow, thereby obviously improving the fish luring effect.

Drawings

FIG. 1 is a schematic structural view of the present invention in practice;

FIG. 2 is a schematic view of the structure of the water pipe of the present invention.

Description of reference numerals: 1-fishways or fish collecting galleries of fish lifts; 2-a water pipe; 3-round hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and examples.

According to the embodiment of the invention, referring to fig. 1, the fish luring method utilizing raw water of a fish breeding station is characterized in that the raw water passing through the fish breeding station near a fish facility is pretreated and then introduced into a fish gathering gallery 1 of a fishway or a fish elevator, the fish is induced to move upwards by utilizing the similar breath of fish in the raw water, and the purpose of luring the fish is achieved.

Claims

1. A fish luring method by using raw water of a breeding station is characterized in that: raw water passing through a fish breeding station near a fish facility is pretreated and then introduced into a fishway or a fish collecting corridor (1) of a fish elevator, and the similar breath of fish in the raw water is utilized to induce the upward migration of the fish, thereby achieving the purpose of fish luring.

2. The method for attracting fish using raw water from a breeding station as set forth in claim 1, wherein: the raw water pretreatment of the proliferation station means that raw water is naturally precipitated for more than 24 hours.

3. The method for attracting fish using raw water from a breeding station as set forth in claim 1, wherein: the fish gathering gallery (1) for introducing the raw water into the fishway or the fish lifting machine conveys the raw water through the water pipe (2) at the fish luring inlet of the fish gathering gallery (1) of the fishway or the fish lifting machine according to the designed flow of the fishway or the fish gathering gallery, a row of round holes (3) are formed in the lower portion of the water pipe (2), then the raw water with a certain flow is continuously added into the round holes (3) in the lower portion of the water pipe (2) in a natural spraying mode at a certain height, and the total flow after the raw water is added is within the designed flow range of the fish gathering gallery (1) of the fishway or the fish lifting machine.