A multi-stage penetrating submarine sand wave in-situ observation device and method

Abstract

The invention discloses a multistage penetration type seabed sand wave in-situ observation device and a method. The multistage penetration type seabed sand wave in-situ observation device comprises asupporting structure, three-stage penetration mechanisms, a multistage probe rod, matching observation instruments and auxiliary equipment, wherein the auxiliary equipment namely comprises an auxiliary ship, a lifting device and the like. The principle is that penetration resistance changes of sand wave bodies on the probe rod in different stages of sand wave migration are taken as trigger elements by multistage penetration systems to perform penetration for the probe rod, and in-situ observation of a penetration area is carried out by equipment carried by the probe rod, and seabed environmental element changes in the process of the sand wave migration are analyzed. The method comprises the step of the implementation of the multistage penetration systems. The multistage penetration type seabed sand wave in-situ observation device and the method provide novel observation thinking for in-situ real-time observation of the seabed sand wave migration, and provide a novel method of the penetration of small and medium size seabed sand wave development areas, and have the characteristics that the equipment is simple and convenient to operate, and the in-situ real-time measurement is applicable to a wide range of water areas.

Description

technical field [0001] The invention relates to a multi-stage penetrating seabed sand wave in-situ observation device and method, belonging to the technical field of seabed observation and the field of marine engineering geology. Background technique [0002] Submarine sand wave is a type of intermittent submarine geomorphology in which the sandy sediments on the continental shelf are under the action of hydrodynamic forces such as ocean waves and tides. The ridge line is long and narrow perpendicular to the direction of the main current. A large number of facts show that the existence and migration of submarine sand waves have a great impact on the safety of submarine pipelines. The migration of sand waves can easily cause suspension or burial of submarine pipelines, and in more serious cases, it will lead to breakage and failure of submarine pipelines, which affects economic security and Environmental security poses a huge threat, so it is of great significance to observe ...

AI Technical Summary

Problems solved by technology

This observation method is simple and easy to implement, but it requires repeated measurements and the time is not continuous, so in-situ observation cannot be realized, and the specific situation of sand wave migration cannot be accurately judged from intermittent data

The in-situ real-time observation device and method of seabed sand wave (public number: CN107631720A) and the seabed sand wave migration observation device and method based on pressure gauge (public number: CN107063196A) have preliminarily designed the observation plan for in-situ observation of seabed sand wave, but Due to the failure to solve the simple and effective penetration in the sandy seabed area, the observation of the longitudinal section of the seabed sand wave has not been realized

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