Seabed slope post-earthquake stability analysis method based on in-situ monitoring

An analysis method and stability technology, applied in the field of stability evaluation under the action of submarine slope earthquakes based on in-situ monitoring, can solve the problems of lack of theoretical guidance monitoring results, high price of monitoring equipment, and complicated deployment methods.

Active Publication Date: 2022-02-18
ZHEJIANG HUADONG CONSTR ENG +1
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Problems solved by technology

First, due to the huge scale of the submarine slope, coupled with the high price of in-situ monitoring equipment for seabed displacement, and complicated deployment methods, it is impractical to deploy large-scale monitoring equipment along the slope like land slopes; second, there is a lack of relevant theoretical guidance for monitoring results. Determining whether a submarine landslide will become unstable after an earthquake

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  • Seabed slope post-earthquake stability analysis method based on in-situ monitoring
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  • Seabed slope post-earthquake stability analysis method based on in-situ monitoring

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[0077] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0078] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways than described here. Therefore, the protection scope of the present invention is not limited by the specific implementation disclosed below. Example limitations.

[0079] Combine below Figure 1 to Figure 3 The post-earthquake stability analysis method of the submarine slope based on the in-situ monitoring of the embodiment of the present invention will be described in...

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Abstract

The invention provides a method for evaluating the stability of a seabed slope under the earthquake action based on in-situ monitoring. The method is used for evaluating the stability of a seabed landslide after an earthquake. By means of the method, under the condition that only a small amount of displacement in-situ monitoring equipment needs to be arranged, according to the displacement monitoring result, the seabed slope earthquake response process under the earthquake action is inverted, the seabed slope potential slip band strength reduction amount is calculated, the shear band expansion theory is combined, and the seabed slope stability after the earthquake action can be judged. The method is economical, feasible and theoretical, and can be used for submarine stability monitoring of ocean engineering such as submarine pipelines, offshore oil and gas platforms, offshore wind power and the like.

Description

technical field [0001] The invention relates to the field of evaluation methods for the stability of submarine slopes, in particular to a method for evaluating the stability of submarine slopes under earthquake action based on in-situ monitoring. Background technique [0002] Earthquakes are an important factor triggering submarine landslides. Submarine landslides seriously threaten the safety of marine engineering facilities such as submarine cables, offshore platforms, and offshore wind power. The tsunami caused by the huge energy released by them will cause immeasurable losses of life and property to coastal residents. Seismic loads lead to shear deformation and accumulation of excess pore water pressure on the submarine slope. After the earthquake, the shear strength of the slope sediment decreases, resulting in the overall instability of the submarine slope. [0003] In-situ monitoring of submarine slope deformation is the most direct means to obtain the slippage of sub...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F30/23G06F119/14
CPCG06F30/23G06F30/20G06F2119/14
Inventor 单治钢李正辉孙淼军刘晓磊贾永刚朱超祁
Owner ZHEJIANG HUADONG CONSTR ENG
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