SatelliteMapping LandslipPrevention GIS PolSAR

Satellite Technology to Map and Assess Coal Tips in South Wales

*The Welsh Government aims to evaluate over 5 million square metres of land using a combination of satellite technology and geospatial analysis tools. Source: Climate Global News*

An engineering team is set to collaborate with the Welsh Government on a vital project to assess and map 83 coal tips in South Wales using advanced satellite technology. This initiative will provide crucial insights into the topography and soil conditions of the area to prevent future landslides and allow for the timely scheduling of any necessary remedial work.

Building on the success of a previous phase, completed in 2022, the new stage of this project will commence in the autumn and involves capturing high-resolution satellite images over three separate data acquisition phases. The goal is to evaluate over 5 million square metres of land using a combination of satellite technology and geospatial analysis tools.

Advanced Satellite Mapping Techniques for Landslide Risk Assessment

Geotechnical engineers and GIS specialists will employ PolSAR (polarimetric synthetic aperture radar) satellite data to develop moisture models for the soil in and around the coal tips. This technology provides a clear and accurate depiction of ground movement, regardless of weather conditions, offering invaluable data for landslip risk assessment. This phase of the study focuses on gathering enhanced intelligence about the identified sites, which will be evaluated based on soil moisture, drainage patterns, topography, and climate conditions.

A unique risk assessment tool will be used to score the coal tips across seven metrics, helping to prioritize sites that require urgent attention. The information will be displayed in a 4D GIS model, enabling local authorities and site managers to make informed decisions about future risk management and potential remedial work.

GIS mapping incorporating output from satellite data. Source: Climate Global News (image by Central Alliance)

Focus on Geotechnical Solutions for Environmental Challenges

This project highlights how satellite technology can address geotechnical challenges unique to the South Wales coalfields, though its principles can be applied to various environmental issues in other engineering and infrastructure projects. By providing a better understanding of ground conditions, the engineering team can focus on the most critical areas for remedial action, ensuring that resources are used effectively to enhance site safety and environmental sustainability.

Sources: central-alliance.co.uk, pbctoday.co.uk, climateglobalnews.com