Mechanism of Earthquake-Induced Bedding Buckling and Tension Landslide in Three-Rivers Basin: Test and DEM Modeling

DOI

10.2991/978-94-6463-946-9_13How to use a DOI?

Keywords

Modeling Test; Crack Propagation; Rock Landslides

Abstract

In the Three-rivers basin of the Qinghai-Tibet Plateau, bedding rock slopes frequently experience landslide disasters. Buckling and tension cracking are common failure modes of these bedding rock landslides, yet the mechanisms of crack propagation remain unclear. This study utilizes shake table experiments and discrete element analysis to investigate the dynamic characteristics and crack propagation mechanisms of the “Xiaguiwa” bedding rock landslide under earthquakes. A Voronoi diagram damage discrete element model was developed based on the shake table model for the bedding rock slope. Arias intensity and Hilbert-Huang Transform (HHT) energy methods were used to analyze the dynamic characteristics and damage mechanisms of the “Xiaguiwa” landslide. Numerical methods were employed to assess displacement, shear, and tensile crack propagation. Results indicate that seismic tensile forces led to the destruction of the slope’s top deposit layer, with buckling failure first occurring at 1/4 elevation of the bedding rock slope. Buckling induced high-frequency energy surges, exceeding 40 Hz. Subsequently, shear deformation emerged at the rear edge, extending down along structural planes. This process coincided with a concave formation at half- elevation. The accumulation layer displayed varying impacts on seismic energy across different elevations, particularly amplifying low-frequency (<10 Hz) and high-frequency (>40 Hz) seismic energy. The rock structure, slope angle, and dip angle not only influence slope dynamics but also alter the instability mode of bedding rock slopes, with smaller dip angles resulting in greater instability. Shear and tensile cracks are interdependent, as shear cracks consistently emerge and propagate along tensile cracks. This study elucidates the dynamic characteristics and crack propagation mechanisms of bedding rock landslides, providing valuable insights for the study of crack propagation in jointed slopes.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Chen Wang
AU  - Xue-Liang Chen
PY  - 2026
DA  - 2026/01/04
TI  - Mechanism of Earthquake-Induced Bedding Buckling and Tension Landslide in Three-Rivers Basin: Test and DEM Modeling
BT  - Proceedings of the 11th Annual Meeting of Risk Analysis Council of China Association for Disaster Prevention (RAC 2024)
PB  - Atlantis Press
SP  - 101
EP  - 107
SN  - 2352-5428
UR  - https://doi.org/10.2991/978-94-6463-946-9_13
DO  - 10.2991/978-94-6463-946-9_13
ID  - Wang2026
ER  -