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Method for monitoring and processing reservoir bank slope deformation based on InSAR image data

A processing method and image data technology, applied in the direction of electric/magnetic solid deformation measurement, measuring device, electromagnetic measuring device, etc., can solve problems such as detecting slope instability, reduce funds and maintenance costs in the later stage of monitoring, and stabilize social order , the effect of reducing disaster losses

Active Publication Date: 2019-05-03
WUHAN UNIV
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Problems solved by technology

At present, some projects have used InSAR technology to obtain slope deformation information and mainly transmit monitoring information in the form of static pictures such as average deformation rate maps. These methods have made a lot of progress in detecting slope instability, but in There are still many deficiencies in slope early warning and risk management

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  • Method for monitoring and processing reservoir bank slope deformation based on InSAR image data
  • Method for monitoring and processing reservoir bank slope deformation based on InSAR image data
  • Method for monitoring and processing reservoir bank slope deformation based on InSAR image data

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Embodiment Construction

[0033] The present invention is illustrated below in conjunction with the accompanying drawings.

[0034] Such as figure 1 As shown, a method for monitoring and processing bank slope deformation based on InSAR image data mainly includes the following steps:

[0035] Step 1. Acquisition and update of bank slope deformation data based on InSAR images

[0036] First, multiple SAR complex image interference data sequences covering the monitoring area are selected, and permanent scatterers (PS points) and distributed scatterers (DS points) are identified from the images by SqueeSAR technology as monitoring points for slope deformation; From the phase signals at PS and DS points, the orbit error, DEM error, atmospheric disturbance, etc. are sequentially separated from the phase signal; finally, the deformation data of all monitoring points are obtained, and the deformation of each monitoring point is drawn in the order of SAR image acquisition time Time series process line.

[00...

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Abstract

The invention discloses a method for monitoring and processing the reservoir bank slope deformation based on InSAR image data. The method is characterized in that on the basis of acquiring the InSAR data of a reservoir bank slope of a drainage basin, the deformation information of a monitoring area is extracted by means of the SqueeSAR technology and differential interference processing, abnormalvalue identification is performed for the acquired deformation time sequence to define unstable regions appearing within the monitoring range; secondly, two factors of a reservoir water level and therainfall are considered, in combination with relevant geological conditions, through the correlation analysis method, causes of deformation abnormality of the slope are determined and explained; and lastly, the monitoring data and related analysis are reflected in a monitoring report through graphs, tables and the like. Compared with the prior art, the method is advantaged in that continuous and semi-automatic monitoring of the large-scale and high-precision reservoir bank slope of the drainage basin can be realized, and deformation abnormality of the slope can be more reasonably predicted.

Description

technical field [0001] The invention belongs to the technical field of slope stability monitoring and early warning, and in particular relates to a method for monitoring and processing bank slope deformation based on InSAR image data. Background technique [0002] As many water conservancy and hydropower projects have been completed and put into operation, the monitoring of river basin slopes has received more and more attention. Among the various monitoring quantities, the deformation variable is the most direct physical quantity that reflects the stability and motion state of the current reservoir bank slope. Monitoring the deformation of the reservoir bank slope can objectively and truly record the development and evolution process of the reservoir bank slope deformation, which is of great significance for understanding the current situation of the reservoir bank slope and predicting the development trend of deformation. [0003] The traditional method of monitoring the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/90G01B7/16
CPCY02A10/40
Inventor 周伟程翔周志伟潘斌
Owner WUHAN UNIV
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