Device for measuring seabed sand wave migration based on triangular pressure sensor and working method

Abstract

The invention provides a device for measuring seabed sand wave migration based on a triangular pressure sensor and a working method. The device comprises a penetration probe rod, a stabilizing frame and the triangular pressure sensor, and the working method comprises the steps: S1, acquiring data, and determining a laying sea area; S2, carrying out equipment preparation; S3, performing sea trial; S4 ,enabling the device to work; and S5, recovering the device. According to the technical scheme, the method can guarantee that the migration direction and speed of the seabed sand waves are inversed through the pressure sensor, and has the advantages that the sand wave period and wave crest and wave trough morphological characteristic parameters can be measured, the migration speed and direction of the sand waves can be measured, wavelength characteristics can be inversed through a mathematical method; compared with a traditional method, the method is simple in measuring principle, and various sand wave migration characteristic data can be obtained; and compared with a similar method applied in the past, the method provided by the invention can obtain the morphological characteristics and migration parameters of the seabed sand waves only by using one technology of the pressure sensor, and has good economical efficiency.

Description

technical field [0001] The invention relates to the technical field of observing seabed sand waves, in particular to a device and working method for measuring seabed sand wave migration based on a triangular pressure sensor. Background technique [0002] Submarine sand wave is a kind of hilly and crescent-shaped submarine landform that widely exists in oceans and coastal waters of the world. Its ridge line is perpendicular to the direction of the main current, and it is highly active under the hydrodynamic effects of ocean waves, tides, and currents. . Current research shows that seabed sand waves will migrate under the action of bottom currents, which poses a threat to the safe operation of submarine engineering facilities (such as submarine pipelines, oil and gas platforms). Therefore, it is necessary to carry out in-situ observation research on seabed sand waves. [0003] At present, the means of on-site research on the migration of seabed sand waves is mainly the use of...

AI Technical Summary

Problems solved by technology

Current research shows that seabed sand waves will migrate under the action of bottom currents, which poses a threat to the safe operation of submarine engineering facilities (such as submarine pipelines, oil and gas platforms), so it is necessary to carry out in-situ observation research on seabed sand waves

[0003] At present, the means of on-site research on the migration of seabed sand waves is mainly the use of geophysical detection technology, that is, the use of multi-beam or side-scan sonar and other acoustic instruments to conduct multiple detections in the research sea area at a certain time interval, and determine the migration direction and rate according to the changes in topographic water depth and landform characteristics , the disadvantage of this method is that the economic cost is high, the data cannot be obtained in real time, and the long-term continuous observation of sand wave migration cannot be realized

The application number is 201710693750.5, and the invention name is in-situ real-time observation device and method of seabed sand wave. However, the height of sand waves can only be retrieved through pressure changes, and other characteristic parameters of sand waves (wavelength, wave height and migration rate) still need to cooperate with a variety of acoustic instruments to achieve

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