Experimental method for measuring avoidance capability of fishes using tributaries under supersaturated stress of dissolved gas

A technology of dissolved gas and tributaries, which is applied in the fields of application, fish farming, climate change adaptation, etc., and can solve the problems of downstream fish injury and death

Inactive Publication Date: 2019-02-01
SICHUAN UNIV
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Problems solved by technology

Supersaturation of dissolved gas can cause irreversible damage and even mass death of downstream fish

Method used

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  • Experimental method for measuring avoidance capability of fishes using tributaries under supersaturated stress of dissolved gas
  • Experimental method for measuring avoidance capability of fishes using tributaries under supersaturated stress of dissolved gas
  • Experimental method for measuring avoidance capability of fishes using tributaries under supersaturated stress of dissolved gas

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Embodiment Construction

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] see Figure 1-12 , the present invention provides a technical solution: an experimental method for measuring the ability of fish to avoid tributaries under the stress of dissolved gas supersaturation, the steps are as follows: a, select experimental samples; b, make experimental models; c, select experimental equipment; d , Adjust the dissolved gas supersaturated water tank of the main tank to the specified dissolved gas supersaturated concentration; e,...

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Abstract

The invention relates to an experimental method for measuring the avoidance capability of fishes using tributaries under supersaturated stress of dissolved gas. The method includes the following stepsof a, selecting experimental samples; b, preparing an experimental model; c, selecting experimental equipment; d, adjusting the concentration of water in a dissolved gas supersaturation water tank ofa main tank to the specified dissolved gas supersaturation concentration; e, using a water pump for introducing the water in the dissolved gas supersaturation water tank into the main tank and adjusting the water to a determined flow rate; f, using the water pump for introducing a clean water tank into a branch tank to adjust the flow rate of water in the clean water tank to be identical to thatof water in the main tank; g, placing the fishes at a mesh plate at the downstream tail end of the main tank and observing the avoidance conditions of the fishes. According to the experimental methodfor measuring the avoidance capability of the fishes using tributaries under the supersaturated stress of the dissolved gas, through a simple experimental device and professional instruments and equipment, relatively accurate measurement results are obtained; in this way, basic parameters are provided for an avoidance space creation engineering design conveniently.

Description

technical field [0001] The invention relates to the technical field of dissolved gas supersaturation in water conservancy projects, in particular to an experimental method for measuring the ability of fish to avoid tributaries under the stress of dissolved gas supersaturation. Background technique [0002] While hydropower development has brought huge social and economic benefits, it has also had a profound impact on the ecological environment, especially at the current stage when cascade high dams appear on a large scale, which has a greater impact on the regional environment. Among them, the release of water from high dams will cause the gas solubility in the downstream water body to exceed the saturation at the local atmospheric pressure, making the total dissolved gas (TDG) in the water supersaturated with dissolved gas. Supersaturation of dissolved gas will cause irreversible damage and even mass death of downstream fish. [0003] If there is an inflow of tributaries i...

Claims

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Application Information

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IPC IPC(8): A01K61/10
CPCA01K61/10Y02A40/81
Inventor 袁佺李克锋周晨阳梁瑞峰王远铭李永李然冯镜洁蒲迅赤
Owner SICHUAN UNIV
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