New scientific issues in the study of high-elevation and long-runout landslide dynamics in the Qinghai-Tibet Plateau

Abstract

The dynamic mechanism of high-elevation and long-runout landslides is always a tricky problem in geological disaster research. Due to the complex geological conditions in the Qinghai-Tibet Plateau, high-elevation and long-runout landslides show more complex and robust dynamic action, resulting in disaster chains of ultra-high elevation and ultra-long distance. The article presents a systematic review of the geological characteristics, physical model tests, and numerical analysis of three prominent dynamic effects of high-elevation and long-runout landslides in the Qinghai-Tibet Plateau, namely, dynamic fragmentation, dynamic erosion, and fluidization. Given the current research status of high-elevation and long-runout landslides in the Qinghai-Tibet Plateau, three significant aspects are proposed to be studied in the future: the mechanism of high-elevation and long-runout landslides in extreme geological environments, new methods for model tests based considering size effect, and basin-wide hazard chains induced by high-elevation and long-runout landslides.

Keywords

• qinghai-tibet plateau
• high elevation and long-runout landslide
• dynamic effect
• key scientific issues