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Seismic landslides hazard zoning based on the modified Newmark model: a case study from the Lushan earthquake, China

Author

Listed:
  • K. P. Jin

    (Shanghai Jiao Tong University)

  • L. K. Yao

    (Southwest Jiaotong University)

  • Q. G. Cheng

    (Southwest Jiaotong University)

  • A. G. Xing

    (Shanghai Jiao Tong University)

Abstract

Seismically triggered landslides can cause great damage to the road construction in mountainous areas. The permanent displacement analysis based on Newmark sliding-block model can evaluate risk of these landslides from the perspective of deformation damage and overall failure probability of slopes. However, the sliding-block model does not consider the attenuation effect of the shear strength on the sliding surface during earthquake, causing the calculated value of Jibson method to be less than the actual value. Therefore, the Newmark model was modified by adding attenuation coefficients to the effective internal friction angle and the effective cohesion of geologic units. The landslide areal density was proposed for hazard zoning with the Wenchuan earthquake data. The results showed that the predicted values agreed well with the real distribution of the landslides triggered by the Lushan earthquake. The proposed hazard zoning method in this paper can predict the severity of seismic landslides in consideration of the environmental changes in mountainous regions after the earthquake and provide support for the site selection in highly seismic areas.

Suggested Citation

  • K. P. Jin & L. K. Yao & Q. G. Cheng & A. G. Xing, 2019. "Seismic landslides hazard zoning based on the modified Newmark model: a case study from the Lushan earthquake, China," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 99(1), pages 493-509, October.
    • Handle: RePEc:spr:nathaz:v:99:y:2019:i:1:d:10.1007_s11069-019-03754-6
    DOI: 10.1007/s11069-019-03754-6
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    References listed on IDEAS

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    1. Ali Rajabi & Mohammad Mahdavifar & M. Khamehchiyan & V. Del Gaudio, 2011. "A new empirical estimator of coseismic landslide displacement for Zagros Mountain region (Iran)," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 59(2), pages 1189-1203, November.
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    Cited by:

    1. Gao Li & Mingdong Zang & Shengwen Qi & Jingshan Bo & Guoxiang Yang & Tianhao Liu, 2023. "An Infinite Slope Model Considering Unloading Joints for Spatial Evaluation of Coseismic Landslide Hazards Triggered by a Reverse Seismogenic Fault: A Case Study of the 2013 Lushan Earthquake," Sustainability, MDPI, vol. 16(1), pages 1-18, December.

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