Sediment trapping device suitable for shallow-sea soft seabed

Abstract

The invention discloses a sediment trapping device suitable for the shallow-sea soft seabed. The device comprises traps, a plurality of suspension arms, a frame and a floater rope, each trap is a pipe with a closed lower end, each closed end is provided with a weight, a protective net is covered outside an opening of an open end, the aperture of the protective net is 0.5-1cm, the suspension arms are arranged on the upper portion of the frame, suspension ropes are tied at the open end of each trap and the other ends of the suspension ropes are tied on free ends of the suspension arms to suspend the traps on the suspension arms, the floater rope is tied at the top end of the frame, the other end of the floater rope is tied with a secondary floater, a primary floater is tied in the middle of the floater rope, and a plurality of fixing pins are arranged on a base face of the frame. The sediment trapping device suitable for the shallow-sea soft seabed is simple in structure, solid, reliable, low in manufacturing cost, easy to manufacture and apply on site, light in equipment and convenient to transport and throw, underwater operations by divers are not needed, and influences on determination effect caused by substrate stirring are avoided during throwing and recovery of the device.

Description

Technical field: [0001] The invention relates to a sediment trapping device, in particular to a sediment trapping device suitable for soft seabeds in shallow seas. Background technique: [0002] The study of seabed sediment flux is one of the key projects in the study of material circulation in shallow seas. At present, sediment traps are mainly used for related research. Compared with hard and soft seabeds, such as seawater fish cage culture areas, there are great difficulties in the study of sediment flux. This is because the bottom mud is soft, and the sediment traps that are directly placed are not easy to fix. Unable to stay upright. At present, divers usually press the sediment trap directly into the bottom mud, and after a period of time, the divers go into the water to recover it. The diving operation is time-consuming, laborious and dangerous, and the divers tend to muddy the seawater during the operation on the seabed, resulting in sedimentation on the seabed. Ma...

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Problems solved by technology

[0003] Soft seabeds are widely distributed in coastal areas of my country. The flux of seabed sediments in this type of sea area is very high, and it plays an important role in the shallow sea material cycle. It is of great scientific value to study its sedimentation flux. However, the existing research techniques are all There are certain defects, and it is difficult to truly reflect the on-site conditions, so it is imminent to develop a device that can accurately measure the flux of soft seabed sediments in shallow seas

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