A Sand Wave Movement Prediction Method Applicable to Typhoon Region

A prediction method and typhoon technology, applied in the field of comprehensive nonlinear spectrum analysis and wave sediment transport theory, can solve problems such as unsuitable typhoon-affected areas and unstable prediction results

Active Publication Date: 2020-10-27
INST OF MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

However, the prediction results of the simple spectrum analysis method are unstable and not suitable for typhoon-affected areas

Method used

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  • A Sand Wave Movement Prediction Method Applicable to Typhoon Region
  • A Sand Wave Movement Prediction Method Applicable to Typhoon Region
  • A Sand Wave Movement Prediction Method Applicable to Typhoon Region

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Embodiment Construction

[0076] This program is to analyze the normal and typhoon weather data for a certain period of time, and then predict the sand wave migration in the specified year according to the obtained results. The processing process is as follows: First, the initial waveform and the final waveform of two periods are given according to the collected seabed height data, such as from 2004 to 2007; the total displacement of the sand wave is obtained through spectral analysis, and then, the typhoon migration is considered The change of the middle position, the effect of a single typhoon is calculated, and the total displacement caused by the typhoon is obtained by superimposing the effects of all typhoons in the period. The effects cancel each other out; finally, subtract the total typhoon displacement from the total displacement to obtain the displacement caused by the conventional wave and current, and calculate the conventional migration velocity, which can be used to predict the future sand...

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Abstract

The invention provides a sand wave movement prediction method suitable for typhoon region, which is based on three angles of statistics, physics and practicality, puts forward the movement speed of spectral energy average, and the prediction result is stable and accurate. Different from the existing scalar form, the action vector of typhoon movement process is calculated, and the influence of different typhoon positions is superposed. According to the reason that some typhoons have great influence in a short time, but the typhoons cancel each other in a long time, the movement caused by the interaction of conventional wave and current is calculated, and the long-term waveform is predicted. Compared with other methods, this model has the advantages of high efficiency and high precision, andcan be used to predict the bed evolution in 10-20 years.

Description

technical field [0001] The invention relates to the field of marine engineering, in particular to a method for integrating nonlinear spectrum analysis and wave sand transport theory when predicting sand wave migration in a typhoon-affected area. Background technique [0002] The seabed is rich in mineral resources and oil and gas resources. With the depletion of available resources on land, human beings began to develop and utilize more marine resources. With the rapid development of the offshore oil and gas industry in recent years, offshore oil has increasingly become the main source of my country's crude oil increment. Submarine sand wave is a very common near-shore submarine landform, and its vertical section is undulating. Under the action of ocean hydrodynamics, the shape and position of sand waves are changing with time (years), which belongs to the unstable landform type. Sand wave migration may cause suspension of submarine pipelines (lines), or even fracture, co...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20
CPCG06F30/20
Inventor 曹高辉林缅江文滨姬莉莉
Owner INST OF MECHANICS CHINESE ACAD OF SCI
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