Earthquake area landslide susceptibility evaluation method

An evaluation method, technology of earthquake landslides, applied in the direction of instruments, character and pattern recognition, computer components, etc., can solve the problems of low availability of optical remote sensing images, evaluation of landslide susceptibility in earthquake-stricken areas, lack of landslide catalog information, etc.

Pending Publication Date: 2020-08-14
CENT SOUTH UNIV
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Problems solved by technology

For earthquake events, landslide disasters induced by earthquakes have the characteristics of wide range, large number, and complex types. It is difficult for traditional landslide cataloging methods to quickly obtain landslide distribution information immediately after the earthquake.
At the same time, earthquake events are accompanied by severe weather conditions, which makes the availability of optical remote sensing i...

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  • Earthquake area landslide susceptibility evaluation method
  • Earthquake area landslide susceptibility evaluation method
  • Earthquake area landslide susceptibility evaluation method

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Embodiment Construction

[0044] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0045] In the basic embodiment of the present invention, such as figure 1 Shown, the present invention provides a kind of landslide susceptibility evaluation method in earthquake area, comprises the steps:

[0046] (1) Based on the difference between the pre-earthquake information and the post-earthquake information in the earthquake area, obtain the catalog of earthquake landslides (ie: catalog of incomplete data);

[0047] (2) Select a landslide sample from the landslide catalogue, based on the landslide sample, use the OCSVM model to obtain the initial earthquake landslide susceptibility index, and normalize it into a probability index, according to the abov...

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Abstract

The invention relates to earthquake disaster processing, and discloses an earthquake area landslide susceptibility evaluation method. The method comprises the following steps: 1, obtaining an earthquake landslide catalogue according to the difference between earthquake area pre-earthquake information and earthquake post-earthquake information; (2) selecting a landslide sample from the landslide catalogue, based on the landslide sample, adopting a single-class support vector machine model to obtain an initial earthquake landslide susceptibility index, normalizing the initial earthquake landslide susceptibility index into a probability index, and partitioning the landslide according to the probability index; (3) selecting non-landslide samples from the first landslide first easy-to-occur area and the first landslide second easy-to-occur area, and constructing a sample data set; and (4) based on the sample data set, obtaining landslide susceptibility indexes of the seismic region throughtwo support vector machine models, and partitioning the landslide by adopting a natural breakpoint method. The evaluation method can rapidly and accurately realize landslide easy-to-occur evaluation of the earthquake disaster area so as to provide a guidance basis for subsequent disaster emergency rescue, disaster monitoring and land planning.

Description

technical field [0001] The invention relates to earthquake disaster treatment, in particular to a landslide susceptibility evaluation method in an earthquake area. Background technique [0002] Rapid evaluation of landslide susceptibility in earthquake-affected areas is an important prerequisite for obtaining post-earthquake regional stability, and is the basic data for constructing post-earthquake disaster risk. Rapid and reliable evaluation of landslide susceptibility in post-earthquake areas, and the classification of landslide susceptibility levels according to the degree of earthquake disturbance have important guiding significance for emergency rescue, site planning, monitoring and prevention after earthquakes. [0003] At present, the evaluation of earthquake landslide susceptibility is mainly based on data statistical analysis methods. By collecting historical landslide information and related landslide impact factors, a statistical analysis model is established to r...

Claims

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Application Information

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IPC IPC(8): G06K9/62
CPCG06F18/214G06F18/2411
Inventor 苗则朗陈帅吴立新贺跃光
Owner CENT SOUTH UNIV
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