Marine geological sediment sampling structure

Abstract

The invention discloses a marine geological sediment sampling structure comprising a supporting table, a plurality of adjusting devices, collecting devices, and cover sealing devices. The plurality ofadjusting devices that can be expanded or closed are installed on the top of the supporting table and are distributed circumferentially along the central axis of the supporting table. The collectingdevices are arranged on the adjusting devices and are used for sampling. The cove sealing devices arranged on the adjusting devices are used for sealing the collecting devices. The adjusting devices include driving assemblies installed on the supporting table and fixed cylinders that are installed on the driving assemblies and can oscillate with the driving assemblies within a range of 180 degrees. The sealing devices include fixed benches installed on the cylindrical surfaces of the fixed cylinders, transmission cylinders installed on the fixed benches, transmission assemblies being installedon the transmission cylinders and being used for providing power, and cover sealing structures installed on the driving assemblies. According to the invention, defects in the prior art are overcome;a special sampling structure for marine sediments is provided; and with the structure, multi-point sampling is realized with low sample losses.

Description

technical field [0001] The invention relates to the technical field of geological exploration sampling equipment, in particular to a marine geological deposit sampling structure. Background technique [0002] In the earth's surface area, the ocean's cauldron covers about 71%, which is more than three times that of land. The ocean is an important part of the global geological structure and a natural laboratory for modern sedimentation. The seabed is rich in mineral resources and is an important source of resources for human beings in the future. Marine environmental geology and disaster geology are directly related to human production and life. Marine sediment is one of the main research directions of marine geology. Marine sediment is a huge repository in the marine ecosystem, recording rich information on the environmental impact of changes in the natural environment of the ocean and changes in the mode and intensity of human activities. [0003] In the study of marine s...

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Problems solved by technology

[0003] In the study of marine sediments, sampling technology and equipment occupy a pivotal position. The existing sediment sampling devices are generally columnar samplers, which are suspended by cables and then impacted to the seabed by gravity, and the columnar samplers are inserted into the seabed. , the sediment is randomly collected into the sampler, and then the sampler is pulled up by the cable and recovered to the deck, but the column sampler has the following problems: First, the sampling area is small, and all single-point sampling is not conducive to the diversity of sample collection; The second is that there is no effective closing device after the collection is completed, resulting in serious sample loss when the sediment is set aside

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