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Deep sea slope stability analysis method and device

A stability, deep-sea technology, applied in the field of deep-sea slope stability analysis methods and devices

Pending Publication Date: 2020-12-01
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The evaluation of submarine landslides is generally based on slope stability analysis methods, but onshore slope stability methods such as the conventional slice method are not suitable for the large water depth and large-scale slope conditions in the deep sea.

Method used

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  • Deep sea slope stability analysis method and device
  • Deep sea slope stability analysis method and device
  • Deep sea slope stability analysis method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The invention provides a method for analyzing the stability of deep sea slopes. Firstly, it includes two analysis methods, one is qualitative analysis and the other is quantitative analysis.

[0054] The deep sea slope stability analysis method, such as figure 1 shown, including:

[0055] S101, when the various geotechnical parameters of the deep-sea slope are not obtained, judge whether the deep-sea slope is dangerous based on the relevant landform attribute information in the deep-sea topographic map;

[0056] S102, when various geotechnical parameters of the deep sea slope are obtained, based on various geotechnical parameters, the stability value of the deep sea slope is obtained according to the following formula:

[0057]

[0058] Among them, F is the stable value of deep sea slope, C u is the linear change law of the undrained shear strength of the rock and soil in the same stratum with the depth of the stratum, D is the soil depth of the rock and soil, γ 1 i...

Embodiment 2

[0103] Based on the same inventive concept, the present invention provides a deep sea slope stability analysis device, such as image 3shown, including:

[0104] The qualitative judgment module 301 is used to judge whether the deep-sea slope is dangerous based on the relevant landform attribute information in the deep-sea landform map when the various geotechnical parameters of the deep-sea slope are not obtained;

[0105] The quantitative analysis module 302 is configured to obtain the stability value of the deep sea slope based on the various geotechnical parameters and according to the following formula when obtaining various geotechnical parameters of the deep sea slope:

[0106]

[0107] Among them, F is the stable value of the deep sea slope, C u is the linear change law of the undrained shear strength of the rock and soil in the same stratum with the depth of the stratum, D is the soil depth of the rock and soil, γ 1 is the average buoyant bulk density of the forma...

Embodiment 3

[0135] Based on the same inventive concept, Embodiment 3 of the present invention provides an electronic device, such as Figure 4 As shown, it includes a memory 404, a processor 402, and a computer program stored in the memory 404 and operable on the processor 402. The processor 302 executes the steps of the deep sea slope stability analysis method.

[0136] Among them, in Figure 4 In, bus architecture (represented by bus 400), bus 400 may include any number of interconnected buses and bridges, bus 400 will include one or more processors represented by processor 402 and various types of memory represented by memory 304 circuits linked together. The bus 400 may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and thus will not be further described herein. The bus interface 406 provides an interface between the bus 400 and the receiver 401 and the transmitter 403 . Receiv...

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Abstract

The invention relates to the technical field of deep sea oil and gas development, in particular to a deep sea side slope stability analysis method and device. The method comprises the steps that whenvarious rock and soil parameters of a deep sea side slope are not obtained, whether the deep sea side slope is dangerous or not is judged based on related geomorphic attribute information in a deep sea geomorphic map; when various rock and soil parameters of the deep sea side slope are obtained, based on the plurality of rock and soil parameters, a stable value of the deep sea side slope is obtained. Based on the stability value of the deep sea slope, the stability grade of the deep sea slope is determined, on one hand, qualitative analysis can be conducted on the basis of a submarine topography map, on the other hand, quantitative analysis can be conducted on the basis of geotechnical engineering geological data, a reliable slope stability analysis result can be obtained on the basis of limited data, expenditure is saved, and project safety is guaranteed.

Description

technical field [0001] The invention relates to the technical field of deep sea oil and gas development, in particular to a deep sea slope stability analysis method and device. Background technique [0002] Deepwater submarine landslide is one of deepwater geological disasters, which has a great impact on deepwater oil and gas development. The evaluation of submarine landslides is generally based on slope stability analysis methods, but onshore slope stability methods such as the conventional slice method are not suitable for the large water depth and large-scale slope conditions in the deep sea. [0003] At the same time, due to the harsh and complex deep-water environment, conventional ocean engineering geophysical survey data, especially geotechnical engineering survey data, are very valuable, and the data are relatively scarce, so it is very necessary to analyze the stability of deep-water slopes based on less data. Contents of the invention [0004] In view of the ab...

Claims

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Application Information

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IPC IPC(8): G06F17/18
CPCG06F17/18
Inventor 祁磊邓海峰许浩李春曹先凡赵开龙徐爽姚志广
Owner BC P INC CHINA NAT PETROLEUM CORP
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