Journal cover Journal topic
Natural Hazards and Earth System Sciences An interactive open-access journal of the European Geosciences Union
https://doi.org/10.5194/nhess-2018-6
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
24 Jan 2018
Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Natural Hazards and Earth System Sciences (NHESS).
Forecasting post-failure landslide mobility using a SPH model and data from ring shear strength tests: A case study
Miao Yu1, Yu Huang2,3, Wenbin Deng2, and Hualin Cheng2 1Faculty of Engineering, China University of Geosciences, Wuhan, Hubei 430074, China
2Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China
3Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education, Tongji University, Shanghai 200092, China
Abstract. Flowlike landslides, such as flowslides and debris avalanches, have caused serious infrastructure damage and casualties for centuries. Effective numerical simulation incorporating accurate soil mechanical parameters is essential for predicting post-failure landslide mobility. In this study, smoothed particle hydrodynamics (SPH) incorporating soil ring shear test results was used to forecast the long-runout mobility for a landslide on an unstable slope in China. First, a series of ring shear tests under different axial stresses and shear velocities were conducted to evaluate the residual shear strength of slip zones after extensive shear deformation. Based on the ring shear test results, SPH modeling was conducted to predict the post-failure mobility of a previously identified unstable slope. The results indicate that the landslide would cut a fire road on the slope after 12 s and cover an expressway at the foot of that slope after 36 s. In the model, the landslide would finally stop sliding about 25 m beyond the foot of the slope after 120 s. This study shows that combining the SPH method with ring shear test results to forecast landslide mobility can provide basic information for landside disaster mitigation.
Citation: Yu, M., Huang, Y., Deng, W., and Cheng, H.: Forecasting post-failure landslide mobility using a SPH model and data from ring shear strength tests: A case study, Nat. Hazards Earth Syst. Sci. Discuss., https://doi.org/10.5194/nhess-2018-6, in review, 2018.
Miao Yu et al.
Miao Yu et al.
Miao Yu et al.

Viewed

Total article views: 218 (including HTML, PDF, and XML)

HTML PDF XML Total BibTeX EndNote
172 35 11 218 3 11

Views and downloads (calculated since 24 Jan 2018)

Cumulative views and downloads (calculated since 24 Jan 2018)

Viewed (geographical distribution)

Total article views: 213 (including HTML, PDF, and XML)

Thereof 211 with geography defined and 2 with unknown origin.

Country # Views %
  • 1

Saved

Discussed

Latest update: 22 May 2018
Publications Copernicus
Download
Share