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Seabed internal deposit pumping re-suspension amount in-situ long-term observation device and method

An observation device and sediment technology, applied in the direction of analyzing materials, instruments, etc., can solve problems such as economic loss, suspension, blowout, etc., and achieve the effect of a wide range of applications

Active Publication Date: 2017-06-13
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Severe seabed erosion will lead to the exposure, suspension or even breakage of submarine umbilical cables, causing engineering accidents such as oil spills and blowouts, resulting in huge economic losses

Method used

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  • Seabed internal deposit pumping re-suspension amount in-situ long-term observation device and method
  • Seabed internal deposit pumping re-suspension amount in-situ long-term observation device and method
  • Seabed internal deposit pumping re-suspension amount in-situ long-term observation device and method

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Embodiment Construction

[0020] Such as Figure 1-5 , the in-situ long-term observation device of the sediment pumping resuspension amount inside the seabed, is characterized in that it includes a stainless steel hemispherical working cabin 1, and the bottom of the working cabin 1 is provided with an annular anti-sedimentation flange 7, and the anti-settling method A circle of holes 8 is opened on the flange 7; a cylindrical anti-skid support 5 is also installed at the bottom of the working cabin 1, and the outer diameter of the anti-slip support 5 is equal to the inner diameter of the anti-settling flange 7, and the outer diameter of the anti-slip support 5 The side is connected with the inner edge of the anti-settling flange 7, and the top of the anti-slip support tube 5 is connected with the concave surface inside the working cabin 1; several card slots 2 and several slots for carrying various commercial instruments 10 are reserved inside the anti-slip support tube 5 The probe card slot 12 of the i...

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Abstract

The invention discloses a seabed internal deposit pumping re-suspension amount in-situ long-term observation device and a seabed internal deposit pumping re-suspension amount in-situ long-term observation method. The device comprises an instrument measurement working cabin, a water-conducting channel for balancing water pressure in and out of the cabin, an anti-vertical sedimentation flange and an anti-horizontal displacement supporting cylinder. Commercial instruments, such as a wave tide instrument and a turbidimeter can be carried in the device. The lower part of the instrument measurement working cabin is opened; the instrument measurement working cabin is integrally connected with the anti-horizontal displacement supporting cylinder; the anti-vertical sedimentation flange is welded to the boundary between the working cabin and the supporting cylinder; a plurality of holes are formed in the flange to reduce absorption between the flange and a soil mass after distribution, so that recovery is conveniently performed; and a lifting ring is rigidly welded to the upper part of the whole device and is used for lifting the device and fixing a positioning floating ball. The device and the method are based on frontier scientific problems and are simple and feasible in principle, and the processing cost is low; and exploration of a series of related scientific problems can be better realized if the device is combined with a conventional bottom-supported tripod observation platform which is carried with the commercial instruments, such as the wave tide instrument, the turbidimeter and a current meter to observe and compare and analyze data.

Description

technical field [0001] The invention relates to an in-situ long-term observation device and method for the amount of sediment pumped and resuspended inside the seabed, which can observe the "pumping" phenomenon of sediments in situ on the seabed for a long time, and belongs to the field of marine engineering geology and sedimentation dynamics. Background technique [0002] Sediment "pumping" is a sediment upwelling phenomenon caused by seabed seepage or even liquefaction caused by the accumulation of wave-induced seabed pore water pressure. Previous studies have shown that the silty soil seabed will accumulate pore pressure under the action of wave load cycles, causing vertical seepage and even liquefaction of the seabed. In this process, the vertical seepage of pore water will carry the fine-grained sediments inside the seabed to be "pumped" up to the surface of the seabed in a form similar to "mud volcanoes", and then enter the overlying water body to become resuspended su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/00
CPCG01N15/00
Inventor 贾永刚张少同张雅淇郭磊王振豪文明征刘晓磊单红仙
Owner OCEAN UNIV OF CHINA
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