A slope on the right side of China’s Sichuan-Qinghai traffic corridor in Songpan County, Sichuan Province, experienced successive landsliding on May 10th, 2023. The event caused significant damage, including blocking the G213 National Highway and the Minjiang River and disrupting power supply lines. The event posed a threat to the safety of downstream residents as well as to the newly-built Sichuan-Qinghai Railway. This article describes the geological setting, morphology, and failure process of the landslide and discusses the monitoring and early-warning measures recommended for similar traffic corridors. Utilizing UAV photographs, GB-InSAR data, and 3D modeling, this research offers insights into the instability mechanisms of the studied event. The findings can aid in preventing and analyzing landslides along transport infrastructures, minimizing potential safety incidents and economic losses.

Li, Huang, Tang, Wang, Scaringi, Liu, Meng, Qin (2024), Landslides.
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