Method for detecting motion direction of drag anchor in oceansoil

A movement direction, ocean technology, applied in the ocean field, can solve the problems of the complex shape of the towed anchor, the research and detection technology is still blank, etc.

Inactive Publication Date: 2010-07-21
TIANJIN UNIV
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Problems solved by technology

The only experimental data are mostly concentrated on the research on the bearing capacity of the anchor plate, and the experimental research results on the direction of motion are limited to the value of the azimuth angle of the anchor plate and the value of the anchor plate at the end of the towing or when the anchor plate reac...

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  • Method for detecting motion direction of drag anchor in oceansoil
  • Method for detecting motion direction of drag anchor in oceansoil
  • Method for detecting motion direction of drag anchor in oceansoil

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Embodiment Construction

[0034] The measuring device used in the present invention is firstly introduced below. Such as figure 1 As shown, it includes a water tank 2 for loading soil, a wire sensor 4 , an inclination sensor 3 , a data acquisition system and a pulley block 5 . A groove is arranged on the axis of the dragging anchor, the inclination sensor 3 is embedded in the groove, the guy wire sensor 4 is fixed on the water tank 2, and the guy wire of the guy wire sensor is connected to the tail of the drag anchor 1 through the guiding effect of the pulley block 5, and the guy wire The displacement signals and inclination angle signals of the sensor 4 and the inclination sensor 3 are sent to the data acquisition system.

[0035] The present invention can be implemented for anchor plates of any shape. The method is as follows: firstly, measure the motion trajectory of the anchor plate along the surface direction of the anchor plate, and use the measured motion trajectory to change the angle between ...

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Abstract

The invention belongs to the technical field of oceanographic engineering, and relates to a method for detecting motion direction of a drag anchor in oceansoil, which comprises the following steps: firstly, measuring a motion track of an anchor plate along the direction of the upper surface of the anchor plate, changing an included angle of the motion direction and the upper surface of the anchor plate by using the measured motion track, and acquiring a group of motion tracks of the anchor plate along different motion directions by a computational simulation; secondly, measuring an actual position of the anchor plate by a probe in the embedding process; and finally, comparing the measured motion tracks with the actual position, wherein the minimum relative error is the motion direction of the anchor plate. Through the method, the motion direction of a drag anchor in any form in the invisible oceansoil is accurately and stably measured and a definite conclusion is given.

Description

technical field [0001] The invention belongs to the marine engineering technology in the marine technical field and is used for scientific research and measurement of new deep-water mooring foundations. Background technique [0002] In the 21st century, the development of energy is unprecedentedly rapid, and the development of oil and gas resources is gradually advancing to the deep sea. With the gradual increase of large and super large offshore compliant structures, mooring systems suitable for deep water and ultra-deep water have received increasing attention. The research and development of new deep-water mooring systems and new deep-water mooring technologies has become an important research field in the development of international offshore oil and gas resources and the international ocean engineering technology community. [0003] As the exploitation of offshore oil and gas resources advances to deep water, correspondingly, higher requirements are put forward for the ...

Claims

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Application Information

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IPC IPC(8): G01C1/00G01C22/00G01B5/02
Inventor 刘海笑张炜张信伟许浩
Owner TIANJIN UNIV
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