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Test method for simulating influence of underwater noise vibration of ships and water transportation engineering on fishes

A test method and noise technology, applied in the field of simulation test of the influence of underwater noise and vibration on fish

Active Publication Date: 2020-11-27
CHINA WATERBORNE TRANSPORT RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the deficiencies in the test methods and the lack of test data for the existing underwater noise and vibration to determine the impact on fish, the present invention provides a test method for simulating the impact of underwater noise and vibration on fish in ship transportation and water transport engineering construction. Use the noise and vibration source preparation device to simulate the underwater noise and vibration of ships and pilings and other water transportation projects, and transmit it to the fish breeding tank. Observe the escape behavior of selected and domesticated representative fish in the laboratory after being affected, and Changes in parameters such as fish growth status and mortality, and then determine the type of fish affected by underwater noise and vibration and the degree of quantitative analysis

Method used

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  • Test method for simulating influence of underwater noise vibration of ships and water transportation engineering on fishes

Examples

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Embodiment 1

[0035] Example 1 "Test method for simulating the impact of underwater noise and vibration of ship transportation on fish"

[0036] The test method specifically includes the following steps:

[0037] Step 1: Preparation of noise and vibration sources. The spectrum information source of the underwater noise and vibration source of the ship is the information recorded when the 20,000-ton bulk carrier passes through the waters with full load, that is, the hydrophone cable is hung on the side of the bulk cargo test ship, and the hydrophone is placed on the side of the ship. At 10m underwater, use a digital recorder to record the underwater noise from the ship's engine to form an audio file. Import the audio file into the noise and vibration analysis software, and draw the noise and vibration spectrum. After recording, the decibel number of the underwater noise of ship transportation is about 150-200 decibels. The main energy is concentrated in the frequency band below 50kHz, and...

Embodiment 2

[0048] Example 2 "Test method for simulating the impact of underwater piling noise on fish"

[0049] Part of the implementation process of this embodiment is different from that of Embodiment 1, and the rest of the implementation process is consistent with that of Embodiment 1.

[0050] Step 1: Preparation of noise and vibration sources. The spectrum information source of the underwater piling noise and vibration source of port construction uses underwater audio information recorded at different positions (such as 50m, 100m, 150m, 200m) away from the piling point, that is, the distance between the test ship and the piling point is measured by a laser range finder. Suspend the hydrophone cable on the side of the test ship, and place the hydrophone 10m underwater. Use a digital recorder to record underwater noise, and form audio files of different distances from the piling site. The engine of the test ship must be turned off during the measurement. Import the audio file record...

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Abstract

The invention discloses a test method for simulating influence of underwater noise vibration of ships and water transport engineering on fishes, and belongs to the technical field of ecological environment influence. Underwater noise vibration caused by ship noise and water transport engineering construction such as piling is simulated by a vibration sounding device and is transferred to a fish culture tank, and then the type and degree of influence on fishes by noise vibration are observed and analyzed. The main test method comprises the following steps: preparing a noise vibration source, testing a noise vibration propagation process, selecting a noise vibration influence receptor, and carrying out test analysis. The method can provide technical support for guiding shipbuilding and navigation and water transport engineering design and construction to adopt appropriate fish influence mitigation countermeasures and evaluating ecological environment influence.

Description

technical field [0001] The invention relates to the technical field of the impact of noise and vibration on the ecological environment, in particular to a simulation test method for the impact of underwater noise and vibration on fish. Background technique [0002] In recent years, with the development of the shipping industry, port development and ship transportation have become increasingly busy. The adverse effects of underwater noise and vibration generated by ship transportation and waterway engineering construction on fish and its mitigation measures have attracted attention. However, due to the difficulty of measuring the impact and the lack of suitable test methods, it is difficult for people to truly understand and quantify the impact of underwater noise and vibration on fish. Therefore, it is necessary to establish a laboratory simulation test system and method to quantitatively evaluate the impact of such underwater noise and vibration on fish, and to provide tec...

Claims

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Application Information

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IPC IPC(8): A01K63/00A01K61/10
CPCA01K63/003A01K63/006A01K61/10Y02A40/81
Inventor 兰儒乔冰聂宁于音任利利段君雅
Owner CHINA WATERBORNE TRANSPORT RES INST
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