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Method and system for evaluating submarine geological disasters

A technology of geological disasters and evaluation methods, applied in the direction of instruments, data processing applications, design optimization/simulation, etc., can solve problems such as the inability to fully accurately express the force characteristics of geological models and the lack of physical simulation of submarine disasters.

Inactive Publication Date: 2017-11-24
GUANGZHOU MARINE GEOLOGICAL SURVEY +1
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Problems solved by technology

However, the existing technology has the following problems: most of the numerical simulation parameters are empirical estimates, which cannot completely and accurately express the real mechanical characteristics of the geological model
The physical model test is an experimental method, focusing on the study of rock and soil mechanical parameters, but there is a relative lack of physical simulation of the deformation process and occurrence mechanism of submarine disasters

Method used

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  • Method and system for evaluating submarine geological disasters
  • Method and system for evaluating submarine geological disasters
  • Method and system for evaluating submarine geological disasters

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Embodiment Construction

[0054] Below, in conjunction with accompanying drawing and specific embodiment, the present invention is described further:

[0055] In this technical solution, the process of modeling and finite element analysis can be completed using Abaqus software.

[0056] Such as figure 1 As shown, it is a flow chart of Embodiment 1 of a method for assessing submarine geological hazards disclosed by the present invention, including:

[0057] S101. Obtain geological data and sample experiment data of the target area;

[0058]Taking the seabed natural gas hydrate test production area as the target area, analyze the regional geological background and marine hydrology of the seabed natural gas hydrate test production area, and arrange object detection lines, including seismic, shallow stratum section, high-precision multi-beam image measurement, sampling etc., to obtain the topography (water depth distribution, terrain relief characteristics) of the test mining area, and describe the sampl...

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Abstract

The invention discloses a method and a system for evaluating submarine geological disasters. The method includes acquiring geological materials of target regions and experimental data of samples; building simulation models of the target regions on the basis of the geological materials and the experimental data of the samples; analyzing the simulation models on the basis of finite element strength reduction processes to generate stability safety coefficients; evaluating the submarine geological disasters on the basis of the stability safety coefficients and generating stability analysis and evaluation reports of the target regions. The method and the system have the advantages that true stress characteristics of geological models can be accurately expressed during evaluation on the marine geological disasters, and deformation procedures and occurrence mechanisms of the marine disasters can be accurately simulated.

Description

technical field [0001] The invention relates to the technical field of seabed monitoring, in particular to a method and system for evaluating seabed geological hazards. Background technique [0002] The northern part of the South China Sea is rich in natural gas hydrate resources, and these natural gas hydrates are usually buried hundreds of meters below the seabed. The northern continental margin of the South China Sea has experienced strong neotectonic activities since the Quaternary. At the same time, the complexity of submarine ocean currents and sedimentary activities (influenced by sea level fluctuations, tectonic movements, faults, ocean currents, etc.), has resulted in the development of various potential geological disasters. . These submarine potential geological hazards are potential threats to the engineering activities of natural gas hydrate test production, such as submarine landslides, geological collapses, abnormal seabed pressure, and blowouts, gas surges, ...

Claims

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Application Information

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IPC IPC(8): G06F17/50G06Q10/06G06Q50/26
CPCG06F30/23G06Q10/0635G06Q50/26
Inventor 何健孔亮石要红梁前勇
Owner GUANGZHOU MARINE GEOLOGICAL SURVEY
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