Submarine landslide simulation and observation system caused by natural gas hydrate decomposition

Abstract

The invention discloses a simulation and observation system for submarine landslide caused by natural gas hydrate decomposition. The simulation and observation system comprises a mechanical support, a heating decomposition unit and a deformation measurement unit, wherein the mechanical support is used for providing a platform and support for the heating decomposition unit and providing an observation area for the deformation measurement unit; the heating decomposition unit is used for heating an observed hydrate material so as to be decomposed and feeding back the amount of decomposition information to the deformation measurement unit; the deformation measurement unit is used for collecting a deformation signal in the mechanical support, observing the deformation process after the heating decomposition unit heats an observed test piece for decomposition according to the deformation signal, and obtaining the digital speckle images of the profile of the test piece in chronological order to generate the deformation information of the test piece for storage. The simulation and observation system solves the problems that in physical simulation experiments in a laboratory, the amount of decomposition and the decomposition area of material samples similar with a hydrate cannot be precisely controlled, the slope angle of the sample cannot be controlled, the landslide deformation cannot be quantitatively described and the like.

Description

technical field [0001] The invention relates to the field of submarine landslide simulation and observation, in particular to a submarine landslide simulation and observation system caused by natural gas hydrate decomposition. Background technique [0002] Natural gas hydrate is generally considered to be the most potential new clean energy in the 21st century. my country's vast jurisdictional sea area, exclusive economic zone and permafrost areas have huge prospects for hydrate resources. The dissociation of seabed gas hydrate is a key factor in inducing some submarine landslides, and its mechanism is that the strength of seabed rocks is reduced due to the dissociation of hydrates. Therefore, when seismic waves, storm waves or man-made disturbances occur, submarine landslides or debris flows will be caused in the seabed hydrate stability zone. [0003] From the perspective of research methods, the current domestic and foreign research on the evaluation of the effects and s...

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Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a submarine landslide simulation and observation system caused by the decomposition of natural gas hydrate, so as to solve the problem of inability to accurately control the decomposition amount and decomposition area of ​​hydrate-like material samples and the sample slope in laboratory physical simulation experiments. Angle controllable, quantitative description of landslide deformation, etc.

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