Automatic posture stabilizing type seabed base and putting method

Abstract

The invention discloses an automatic posture stabilizing type seabed base and a putting method, and belongs to the technical field of ocean observation, the automatic posture stabilizing type seabed base comprises a containing body, a plugging piece, a first connecting piece and a second connecting piece, the containing body is provided with an inner cavity used for containing first observation equipment and a water body, and the containing body is provided with a first through hole allowing the water body to enter and exit from the inner cavity of the containing body; the first observation device is arranged in the cover body to close or semi-close the first through hole, the buoyancy body is arranged at the transducer of the first observation device, and the buoyancy of the buoyancy body is larger than the mass of the first observation device, so that the first observation device can float in the cover body after the cover body is filled with water, and the posture of the transducer in the cover body is always kept vertically towards the sea surface. According to the automatic posture stabilization type seabed base and the putting method, the transducer always keeps vertically facing the sea surface, and the requirements for the putting sea condition and the tidal time are low.

Description

technical field [0001] The invention belongs to the technical field of ocean observation, and in particular relates to an automatic stable attitude type seabed foundation and a release method. Background technique [0002] The seabed base is an integrated system for fixed-point and long-term monitoring of the marine environment, which is placed on the seabed. Continuous observation, advanced seabed base also has real-time data transmission technology of underwater acoustic communication, which is an important technical means to obtain long-term marine hydrological elements, and an indispensable means of data acquisition in the fields of marine engineering construction, marine environmental protection and marine disaster prevention and mitigation. . [0003] At present, the release process of seabed foundation is that after the ship-borne seabed foundation arrives in the sea area, it is generally released by survey ships or civilian ships at high and low tides (the current i...

AI Technical Summary

Problems solved by technology

After the seabed foundation is placed, it is affected by waves, currents, etc. during the descent process, and is affected by the sea current and ship motion along the way. Its attitude may change. Placed on the seabed stably, the attitude of the seabed base is tilted or reversed after landing on the seabed, but the dropper cannot obtain the attitude information of the seabed base after landing on the sea surface. The seabed base carried inside the seabed base For the first observation equipment with attitude requirements, such as ADCP, Langlong, etc., the transducer cannot keep facing the sea surface vertically, resulting in failure of observation or poor quality of observation data

This problem is particularly prominent in the Bohai Sea, the Yellow Sea, and the East China Sea. Due to the high turbidity of the coastal waters of the Bohai Sea, the Yellow Sea, and the East Sea, it is impossible to identify from the sea surface whether the bottom of the seabed base is landed smoothly. feel

Sometimes, in order to ensure that the bottom of the seabed foundation lands, the launching personnel will slightly retract and release the cable after the seabed foundation reaches the bottom of the seabed, but it is not 100% guaranteed that the posture of the seabed foundation on the bottom of the seabed is placed on the seabed in a stable manner.

If the sea conditions are not ideal when launching, even if the cable is pulled many times, the attitude of the seabed foundation cannot be fully controlled

Seabed-based systems are generally used for long-term observation of hydrological elements and provide important engineering design parameters for offshore marine engineering construction. Generally, they need to be placed on the seabed for 1 year or even longer, during which batteries need to be replaced every 1-2 months And reading data, it is necessary to recover and release the seabed foundation every time, and repeat this work until the end of the observation. If the placement of the seabed foundation is inappropriate once, it will lead to a decline in the quality of the overall observation data, which will affect the engineering construction parameters. Acquisition has caused adverse effects. If the investigation is carried out again, it will not only increase the expenditure of manpower and material resources, but also easily delay the construction period

Therefore, the attitude of the seabed foundation on the seabed plays a very important role in the acquisition of high-quality data. At present, there is no reliable technical means to ensure that the seabed foundation has a good attitude and stability when it lands on the seabed.

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