Coastal zone dam stability monitoring and flooding vulnerability evaluation method and system

A coastal zone and fragility technology, applied in the direction of radio wave measurement system, satellite radio beacon positioning system, measurement device, etc., can solve the problems of weakening damage, low spatial resolution, small coverage area, etc., and achieve the minimum economic loss The effects of high-resolution, high spatial-temporal resolution, and improved observation efficiency

CN111999733AActive Publication Date: 2020-11-27OCEAN UNIV OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-11-27

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Abstract

The invention belongs to the technical field of coastal zone dam monitoring, and discloses a coastal zone dam stability monitoring and flooding vulnerability evaluation method and system. The method comprises the steps of preparing a satellite-borne SAR single look complex image and global DEM data for assisting the InSAR time sequence analysis, and obtaining dam point cloud data, sea level risingdata and tide inspection data through employing an unmanned plane laser radar; carrying out data preprocessing to realize dam DEM generation, dam deformation rate acquisition, dam future DEM simulation and dam water level simulation; and performing flooding analysis to realize dam flooding analysis and dam flooding scene display. According to the invention, the combination of the satellite-borneInSAR time sequence analysis deformation rate and the unmanned aerial vehicle-mounted laser radar DEM is realized, and high observation precision and space-time resolution are ensured. According to the invention, three components (tidal component, storm water increase and sea level rise) are synthesized for flooding water level simulation, daily conditions and extreme conditions are simulated at the same time, and over-high water level estimation is avoided.
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Description

technical field

[0001] The invention belongs to the technical field of monitoring coastal dams, in particular to a method and system for monitoring the stability of coastal dams and assessing submergence vulnerability. Background technique

[0002] At present, coastal dam monitoring is usually affected by the spatial and temporal resolution of observation data, and is limited by human and economic costs. Generally speaking, using traditional ground leveling or satellite navigation and positioning system (GNSS) continuous operation reference station to carry out long-term deformation monitoring of dams can achieve relatively high monitoring accuracy, but it is usually limited by grid density and economic applicability .

[0003] The current inundation analysis of coastal dams can be mainly divided into two categories: the first type is based on the premise of stable ground, and the water level of different heights is superimposed for inundation analysis; the second type is b...

Examples

Embodiment Construction

[0085] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0086] Aiming at the problems existing in the prior art, the present invention provides a method and system for monitoring the stability of coastal dams and assessing submergence vulnerability. The present invention will be described in detail below in conjunction with the accompanying drawings.

[0087] Such as figure 1 As shown, the coastal zone dam stability monitoring provided by the invention and the submerged vulnerability assessment method include the following steps:

[0088] S101: Prepare spaceborne SAR single-view complex images (SLC) (can be multi-band SAR data such as C-band, X-band or L-band, or use SAR satell...