Tide head reoxygenation capability testing method for strong tidal bore spreading process

A technology of propagation process and capability testing, which is applied in the direction of measuring devices, material analysis through electromagnetic means, instruments, etc., to achieve the effect of convenient and firm installation

Active Publication Date: 2014-08-27
ZHEJIANG INST OF HYDRAULICS & ESTUARY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the shortcomings of the hydrodynamic characteristics of strong tides, soil conditions of the river bed and existing test methods for the relationship between aeration concentration and reoxygenation capacity, the present invention designs a relationship

Method used

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  • Tide head reoxygenation capability testing method for strong tidal bore spreading process
  • Tide head reoxygenation capability testing method for strong tidal bore spreading process
  • Tide head reoxygenation capability testing method for strong tidal bore spreading process

Examples

Experimental program
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Embodiment 1

[0040] A method for on-site testing of air entrainment concentration at a tidal head during the propagation of strong tides, comprising air entrainment concentration test equipment and foundation fixtures. The test equipment includes a power supply 1, an induction component 2, a stainless steel wall surface 21, a platinum wire 22, an insulating material 23, a test resistor 24, a signal amplification and acquisition system 3, a wireless transmission system 4, a supporting steel pipe 5, an equipment box 6, a circuit 7 and The shore station 8; the foundation fixing device includes a steel pipe pile 9 and a threaded cone head 10.

[0041]A river channel has a water depth of 2m and a tidal surge height of 1m to test the reoxygenation capacity of the tidal head.

[0042] The power supply 1 supplies power for the sensing component 2, the signal amplification and acquisition system 3 and the wireless transmission system 4. The sum of the power of the three test components is within 10...

Embodiment 2

[0051] Utilize the device among the embodiment one, adopt following steps:

[0052] 1) Use the shore station to issue instructions to set the acquisition system to the stack storage mode;

[0053] 2) Set the stack storage to extend forward for 1 minute, the acquisition frequency = 10Hz, the sampling length is set to manual stop, and the trigger signal is the first voltage signal that is not 0V obtained by the acquisition system;

[0054] 3) Recorded data include dissolved oxygen value and aeration concentration.

[0055] finally got Figure 6 The graph of the dissolved oxygen aeration concentration relationship.

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Abstract

The invention discloses a tide head reoxygenation capability testing method for a strong tide spreading process. The method is used for analyzing the reoxygenation capability of water in a tidal bore river reach. The method is characterized in that aeration concentration testing equipment, a foundation fixing device, a dissolved oxygen testing device and a testing step are involved, wherein the aeration concentration testing equipment comprises a power supply, sensing parts, a signal amplification and acquisition system, a wireless transmission system, a supporting steel pipe, an equipment box and a bank testing station; the foundation fixing device comprises a steel pipe pile and a threaded cone head; the dissolved oxygen testing device comprises an online dissolved oxygen tester, a probe and a spherical water containing box. According to the method, the principle that whether voltage is output when water and bubbles pass through the sensing parts or not is utilized, so that the testing method for simultaneously measuring the aeration concentration and the reoxygenation capability in the same environment can be provided; the scheme that a single-pile foundation and the support steel pipe are connected in a sleeving way is adopted, so that the arrangement height of a testing point can be flexibly adjusted, convenience and firmness in mounting are ensured, and the method can be adaptive to severe strong tidal bore water flow conditions.

Description

technical field [0001] The invention relates to a method for testing reoxygenation capacity in tidal surges, in particular to a field test method for testing the relationship between aeration concentration at a tidal head and reoxygenation capacity during the propagation of strong tides, and belongs to the field of engineering monitoring. Background technique [0002] The amount of dissolved oxygen in river water is one of the important indicators to measure the quality of river water. After the sewage enters the river water body, the dissolved oxygen will be consumed due to the oxidation of organic pollutants and the decomposition of the sediment; at the same time, the oxygen in the air will continue to dissolve into the river water body to supplement the dissolved oxygen in the water. oxygen. Existing studies have shown that the water reoxygenation capacity of the strongly tidal river section is much stronger than that of other sections of the same river. The Qiantang Ri...

Claims

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Application Information

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IPC IPC(8): G01N27/00
Inventor 潘冬子潘存鸿曾剑黄君宝
Owner ZHEJIANG INST OF HYDRAULICS & ESTUARY
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