Zpravodaj Hnědé uhlí 2022, 62(3)
Long-Term Slope Stability Modelling and Risk Assessment of Lake Most - Preliminary Results
The Lake Most is located in the central part of the Most Basin (Czech Rep.), which is a geomorphological part of Eger graben. The lake was created by flooding of Most-Ležáky residual pit between October 2008 and September 2014. Like in rest of Europe, the safety and the security of mine lakes is one of the priorities of flooding and post-flooding period. One of the main hazards identified is the slope stability of lake banks. To develop a reliability methodology for assessing the long-term stability of flooded open pit mines, a large-scale numerical model of the lake was carried out and was applied on Lake Most. The large-scale numerical model was built, based on the site observations, large scale LiDAR data and geotechnical data. The results highlighted the reliability of the methodology to combine the geometric model with the geological model to create a large-scale numerical model, and to identify local and potentially instable zones.
Keywords: post-mining lake, slope stability, risk assessment, LiDAR, numerical modeling
Published: September 1, 2022 Show citation