Deep sea foundation electromagnetic induction space positioning and direction finding device for supergravity centrifuge

Abstract

The invention discloses a deep sea foundation electromagnetic induction space positioning and direction finding device for a supergravity centrifuge. The device comprises a shielding box located inside and a model box located outside, wherein the shielding box is fixed in the model box through supports and cushion blocks, a magnetic source support is fixed on the inner side wall of the shielding box, a magnetic source is fixedly arranged on the magnetic source support, the shielding box is filled with an experimental soil mass, a deep sea foundation is arranged in the experimental soil mass and can move freely in the experimental soil mass of the shielding box, and a tracker is fixed on the deep sea foundation; the shielding box and the model box are grounded through grounding wires, the tracker is connected with an equipment independent power supply outside the model box through a power line, and the tracker is connected with a data collecting and processing system outside the model box through a data line. The device is used for shielding low-frequency interfering magnetic field produced during operation of the centrifuge and accurately tracking the position and attitude information of a structure in a centrifuge deep sea foundation experiment, the accuracy of magnetic induction tracking equipment is improved, and the motion information of the deep sea foundation is detectedcontinuously in real time.

Description

technical field [0001] The invention relates to a deep-sea foundation dynamic characteristic measuring device, in particular to a deep-sea foundation electromagnetic induction spatial positioning and direction-finding device for a supergravity centrifuge. Background technique [0002] The rise of the offshore oil exploration industry has promoted the research and development of deep sea foundations for offshore oil and gas exploration platforms, and has become an emerging research hotspot in the field of civil engineering. The position and attitude information of the deep-sea foundation under the action of force is closely related to its ultimate bearing capacity and failure mode. Taking the deep-sea towed anchor as an example, the embedded depth and azimuth angle when the installation is completed determine the ultimate bearing capacity of the foundation and the bearing capacity during service. Different instability mechanisms such as normal maneuvering, in-plane maneuverin...

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Problems solved by technology

The three kinds of magnetic field propagation methods will eventually generate interference magnetic fields in

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