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Мониторинг опасных процессов - La Portalada Punt de Trobada 2021

The camera autonomously triggers images of the monitored area at least twice daily. It transmits the images to the servers for deformation analysis and preparation for depiction in the user portal. The analysis interval can be selected as required. Deformation analysis is determined nightly and uploaded to the online data portal subsequently. Deformation analyses, all images and live images are accessible anytime through the portal.

Мониторинг опасных процессов - La Portalada Punt de Trobada 2021

The camera autonomously triggers images of the monitored area at least twice daily. It transmits the images to the servers for deformation analysis and preparation for depiction in the user portal. The analysis interval can be selected as required. Deformation analysis is executed by unique algorithms which autonomously select suitable pairs of images and perform a feature tracking analysis for a given time interval. The algorithms are capable to identify features even at strongly varying light conditions. The resulting deformation analysis and the high resolution images are accessible at any time through the data portal. With the help of the deformation analysis and the high resolution images, the responsible staff was able to rapidly and remotely identify the critical areas and take decisions for measures if needed.

Мониторинг опасных процессов - La Portalada Punt de Trobada 2021

The data-portal image viewer offers intuitive and easy image comparison using high-resolution images, zooming even parts of the image. You can quickly switch between cached images to view zones. Also, you can select a set of images. You can zoom in on the image and toggle between the images to check the changes in detail.

Мониторинг опасных процессов - La Portalada Punt de Trobada 2021

The high-resolution pictures allow for zooming and studying details of areas.

Мониторинг опасных процессов - La Portalada Punt de Trobada 2021

The deformation analysis compares pairs of images. This image shows the deformation analysis of the studied area during the installation phase. Initially, images of only two days difference, depicting only fast movements, were compared. With accumulating knowledge and a dataset of the observed region, a comparative framework of 30 days was reached (see picture below). It allowed a deformation sensitivity ten times larger than with the initial configuration.

Мониторинг опасных процессов - La Portalada Punt de Trobada 2021

The number of days in parentheses in the image header (Figures 4 and 5) indicates the range of acceptability to maximize the overall quality of the deformation analysis. The results are displayed in milli-Pixel / day. Color code: • green: regions without significant deformation. • yellow: slow movement. • red to blue: significant deformation. • areas without color: correlation loss due to changes too fast or strong to track, i.e., large movements or rotation objects, or surface change, e.g., induced by snowfall.

Мониторинг опасных процессов - La Portalada Punt de Trobada 2021

Zones 1 to 10 were considered stable, while 11 and 12 were potentially unstable.

Мониторинг опасных процессов - La Portalada Punt de Trobada 2021

The diagram shows how the area was stabilized after the measures. The camera was no longer needed in this case.

 

Год установки

2021

Ситуация

After a vast landslide next to a shopping center and national highway in August 2019, the main access road from Andorra to Spain had to be closed.

Construction measures for safety in this section were initiated. Safety during construction works and the effectiveness of the stabilization measures had to be ensured.

Описание

The installation of a Geoprevent DEFOX® Deformation Camera allowed to distinguish stable areas from unstable areas. The pictures delivered important information about the direction of movement, deformation rates, and velocity time series of defined areas. 

The information was used to decide on construction measures, emergency reservoir drains or evacuations (if necessary). 

Read more about the La Portalada project in the paper of Roberto Fonseca (March 2022).

Клиент

Защищаемый объект

Дорога, Инфраструктура, Другое

Проектировщик

Другие конструкции

Камнепады, обвалы, осыпи, Мониторинг опасных процессов

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Kevin H. Coyle
 

Kevin H. Coyle

Regional Manager Northeast

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Geobrugg North America, LLC,3 Beaudet Terr,Columbia CT 06237 / США Regional Manager Northeast

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Saleh Feidi
 

Saleh Feidi

Regional Manager California

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Geobrugg North America, LLC,8921 Emperor Ave.,San Gabriel, California 91775 / США Regional Manager California

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John Kalejta
 

John Kalejta

Regional Manager Central US

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Geobrugg North America, LLC,3215 67th Avenue Pl,Greeley CO 80634 / США Regional Manager Central US

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Bob Lyne
 

Bob Lyne

Regional Manager Southeast

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Geobrugg North America, LLC,8004 Windspray Drive,Summerfield NC 27358 / США Regional Manager Southeast

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Pierce Runnels, Civil Engineer
   

Pierce Runnels

General Manager Geobrugg North America

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Geobrugg North America, LLC,22 Centro Algodones , Civil Engineer General Manager Geobrugg North America

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Tim Shevlin
 

Tim Shevlin

Sales Director

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Geobrugg North America, LLC,Salem OR 97302 / США Sales Director

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