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<p>As human socioeconomic activities expand into complex and perilous mountainous areas, engineering projects in these areas face unprecedented landslide risks, particularly long-distance linear projects such as railways and highways. However, research on landslide risk specifically tailored to linear projects in mountainous area remains limited. A novel technical framework for kinematic-based seismic landslide risk assessment to linear projects is proposed, whose key components include seismic landslide hazard, distributed kinematic-based landslide simulation, linear project vulnerability. The focus is on extracting the landslide source points under seismic action and improving the seismic landslide hazard with distributed landslide dynamic simulation. The linear projects are “discretized” into a series of line segments or points to conduct vulnerability evaluation. Taking the mountainous Western Sichuan Railway as a case study, the seismic landslide hazard was improved, a factor index system for railway project vulnerability was constructed, and the seismic landslide risk assessment for railway projects was completed. The Luding-Kangding section of the Western Sichuan Railway faces a significantly higher seismic landslide risk. The total railway length with very high and high seismic landslide risk is 1.44&#xa0;km, accounting for 2.01%, predominantly located along the Dadu River and Yala River corridors. The research findings provide a valuable reference and novel insight for landslide risk assessment of linear projects in mountainous areas.</p>

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Kinematic-based seismic landslide risk assessment to linear projects in mountainous areas: a case study of the railway project in western China

  • 期刊论文

  • 发表日期：

    2026年5月13日

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  • Zhihua Yang,
  • Yuming Wu,
  • Pengfei Yu,
  • Changbao Guo,
  • Yongshuang Zhang,
  • Haiyan Yang,
  • Ruixian Sun

摘要

As human socioeconomic activities expand into complex and perilous mountainous areas, engineering projects in these areas face unprecedented landslide risks, particularly long-distance linear projects such as railways and highways. However, research on landslide risk specifically tailored to linear projects in mountainous area remains limited. A novel technical framework for kinematic-based seismic landslide risk assessment to linear projects is proposed, whose key components include seismic landslide hazard, distributed kinematic-based landslide simulation, linear project vulnerability. The focus is on extracting the landslide source points under seismic action and improving the seismic landslide hazard with distributed landslide dynamic simulation. The linear projects are “discretized” into a series of line segments or points to conduct vulnerability evaluation. Taking the mountainous Western Sichuan Railway as a case study, the seismic landslide hazard was improved, a factor index system for railway project vulnerability was constructed, and the seismic landslide risk assessment for railway projects was completed. The Luding-Kangding section of the Western Sichuan Railway faces a significantly higher seismic landslide risk. The total railway length with very high and high seismic landslide risk is 1.44 km, accounting for 2.01%, predominantly located along the Dadu River and Yala River corridors. The research findings provide a valuable reference and novel insight for landslide risk assessment of linear projects in mountainous areas.