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

Abstract

The invention provides a device and working method for measuring seabed sand wave migration based on a triangular pressure sensor. The device includes a penetrating probe rod, a stabilizer and a triangular pressure sensor. The working method: S1 data collection and determination of the deployment sea area; S2: Equipment preparation; S3: Sea trial work; S4: Device work; S5: Device recovery. Through the technical scheme of the present invention, the method of the present invention can ensure that the migration direction and rate of the seabed sand wave are reversed by the pressure sensor, and its advantage is that it can not only measure the sand wave period, the peak and valley morphological characteristic parameters, but also measure the speed and velocity of the sand wave migration. direction, and the wavelength characteristics can also be inverted by mathematical methods. Compared with traditional methods, this method has a simple measurement principle and can obtain a variety of sand wave migration characteristic data. Compared with similar methods applied in the past, the method of the present invention can obtain the shape characteristics and migration parameters of seabed sand waves by using only one technology of pressure sensors, 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

Images