11:45 〜 12:00
[HDS07-11] Integration of Remote Sensing Technologies and 3D Modeling for Comparative Analysis of Rock Slope Failures: A Case Study of Yusuihsi and Guanghua Slopes in Taiwan
キーワード：landslide monitoring, rock slope stability, remote sensing integration, three-dimensional modeling
The comprehensive study analyzed two significant rock slopes in Taiwan using integrated remote sensing technologies. At Yusuihsi slope, which ultimately failed, monitoring revealed peak velocities of 0.22-0.60 m/d and accelerations of 0.006-0.034 m/d² before collapse, with rainfall significantly influencing movement patterns. In contrast, the Guanghua slope, which underwent deformation without failure, exhibited maximum velocities of 0.17 m/d and accelerations of 0.003 m/d². Through advanced Landslide Thickness Inversion techniques applied to LiDAR-derived DEMs, we developed a detailed 3D conceptual model of the Guanghua slope, dividing it into four distinct blocks: head, northern body, southern body, and toe. The model revealed varying landslide thickness from less than 10 meters at the head to 55 meters in the body, with the southern body identified as having the highest potential failure volume. The study established critical thresholds for failure prediction (0.2 m/d velocity and 0.015 m/d² acceleration) and proposed seven different failure scenarios based on block characteristics and interactions. This research demonstrates the effectiveness of integrating optical satellite imagery and LiDAR technology for landslide monitoring and emphasizes the importance of site-specific geological characteristics in developing tailored monitoring strategies. The findings provide a robust scientific framework for landslide risk assessment and early warning system development, contributing to more effective disaster prevention and mitigation strategies.