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An in-situ sediment columnar layered layered erosion resistance measurement device and method

A technology of corrosion resistance and measuring device, applied in the direction of measuring device, analytical material, weather resistance/light resistance/corrosion resistance, etc., can solve the problem of lack of small portable annular water tank device, no sediment columnar-like layered erosion resistance and other problems, to achieve the effect of economical measurement devices and supporting data analysis methods

Active Publication Date: 2020-05-22
OCEAN UNIV OF CHINA
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Problems solved by technology

However, there is no invention to directly test the erosion resistance of in-situ sediment columnar stratification by using the principle of annular water tanks, and there is even a lack of small portable ring water tank devices that can quickly test the deck

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  • An in-situ sediment columnar layered layered erosion resistance measurement device and method
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  • An in-situ sediment columnar layered layered erosion resistance measurement device and method

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Embodiment Construction

[0038] Such as Figure 1-5 As shown, an in-situ sediment columnar-like layered erosion resistance measurement device includes a small annular tank 1 with an outer diameter of less than 2m and a flow-making device 13, which is characterized in that in the annular tank 1, a plurality of columnar sediments The placement tank 2 for objects, and the upper end of each placement tank 2 is provided with a cover 12, and the placement tank 2 that is not used during the test can be sealed; the annular water tank 1 is fixed with a turbidity sensor 3 and a three-dimensional flow rate sensor. 4. An echo ranging sensor 5 is installed above the placement tank 2 to simultaneously measure the concentration of suspended sediment in the water body, the flow velocity (shear stress) and the erosion depth of the columnar sample. The echo ranging (Altimeter) sensor fixed directly above the columnar sample , which can record the change of erosion depth in real time. The light and small water tank des...

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Abstract

The invention provides an in-situ sediment columnar sample stratified erosion resistance measuring device, and a method thereof. Effective measurement of sediment columnar sample erosion resistance isachieved by reserving a columnar sample placement groove in a small annular water tank in combination with commercial sensors such as turbidity (OBS), three-dimensional flow rate (ADV) and acoustic wave ranging (Altimeter); and further, by designing a lifting tray and a control rotation valve at the bottom of the placement groove, the elevation of the columnar sample can be freely adjusted, thereby realizing the stratified measurement of the columnar sample erosion resistance. At present, the erosion resistance of the columnar sample sediment is mainly measured by a cohesive force instrument(CSM) in the industry, but the cohesive force instrument simulates the undercut stress based on an erupting gas, the cohesive force instrument inevitably has a certain "jet flow" effect, so that the test result is controversial, and the test cost is relatively high. The invention will break through the technical limitation and provide a more realistic, effective, fast and economical measuring device and data analysis method for the stratified measurement of in-situ sediment columnar sample erosion resistance.

Description

technical field [0001] The invention relates to an in-situ sediment columnar sample anti-erosion delamination measurement device and a method thereof, which belong to the field of marine engineering geology and will be directly applied to serve the scientific research and engineering fields of nearshore sediment dynamic processes. Background technique [0002] The erosion resistance of seabed sediments is an important index to predict the evolution of seabed erosion and deposition and the dynamic cycle of sediments, mainly through the critical erosion shear stress (τ cr ) and erosion rate (E r ) two indicators to characterize. The research on the erosion resistance of non-cohesive sandy sediments has been relatively mature, while the erosion resistance of cohesive sediments is more complicated due to the comprehensive influence of cohesion, consolidation state and biological factors. At present, there is no universal and highly applicable predictive model for the erosion r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N17/00
CPCG01N17/00
Inventor 张少同张雅淇贾永刚张皓清代馨楠单红仙
Owner OCEAN UNIV OF CHINA
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