Identifying rock slope failure precursors using LiDAR for transportation corridor hazard management
| Autor: | Tom Edwards, Matthew J. Lato, Ryan Kromer, Dave Gauthier, D. Jean Hutchinson |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Canyon
geography geography.geographical_feature_category 010504 meteorology & atmospheric sciences 0211 other engineering and technologies Geology 02 engineering and technology Rockslide Geotechnical Engineering and Engineering Geology Block (meteorology) 01 natural sciences Hazard Lidar Rockfall Tension (geology) Rock slope Seismology 021101 geological & geomatics engineering 0105 earth and related environmental sciences |
| Zdroj: | Engineering Geology. 195:93-103 |
| ISSN: | 0013-7952 |
| Popis: | In the Thompson and Fraser River valleys, rockfall and rockslides are a hazard for railway traffic in the region. In June 2013, a 2600 m 3 rockslide occurred in the White Canyon, causing damage to infrastructure and interruption to service. In the year preceding this failure, the slope was monitored using terrestrial Light Detection And Ranging (LiDAR) as part of the Railway Ground Hazards Research Program initiative. The purpose of this study is to evaluate a hazard management strategy for transportation corridors exposed to steep slopes involving the identification of rockfall precursors prior to significant slope failures. For this failure, deformation was observed in the seven months preceding collapse with an accelerating period occurring in the final 28 days. A distinct pattern of smaller rockfalls was observed around the perimeter of the deforming rock block as well as loss of surficial material over the slides tension crack. This study shows that with LiDAR monitoring, precursors to rock slope failures can be identified allowing for better rock slope hazard management by focusing attention on areas with the highest probability of failure. |
| Databáze: | OpenAIRE |
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