Preprints
https://doi.org/10.5194/esurf-2022-38
https://doi.org/10.5194/esurf-2022-38
26 Jul 2022
 | 26 Jul 2022
Status: this preprint has been withdrawn by the authors.

Influences of Slope Angle on Propagation and Deposition of Laboratory Landslides

Yan-Bin Wu, Zhao Duan, Jian-Bing Peng, and Qing Zhang

Abstract. Slope angle is an important influence on the motion characteristics and deposit morphologies of landslides. In this study, an advanced 3D scanner was used to study laboratory landslides at various slope angles. The laboratory landslides had different motion characteristics. An increase of the runout of the laboratory landslides with the slope angles meant that the amount of energy loss was great due to the collision of sliding mass at the slope break. The length and area of these laboratory landslides increased first and then decreased during their whole motion. The surface morphologies of the deposits differed according to the slope angles. At low slope angles, they exhibited a series of transverse ridges formed by overthrusting. At moderate slope angles, they exhibited conjugate troughs (X-shape wash) formed by shearing on the accumulation zone. At high slope angles, they exhibited a double-upheaval morphology formed by the rear portion of the sliding mass impacting the forward portion. A theoretical relationship between the apparent friction coefficient and slope angle is proposed, based on a hypothesis the ratio of energy dissipation occurring when an object collides with a plane is exponentially related to the acute angle between the object’s direction and the plane’s normal direction. The study will support studies on the morphological variation during the whole motion and mobility of landslides.

This preprint has been withdrawn.

Yan-Bin Wu, Zhao Duan, Jian-Bing Peng, and Qing Zhang

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
Yan-Bin Wu, Zhao Duan, Jian-Bing Peng, and Qing Zhang
Yan-Bin Wu, Zhao Duan, Jian-Bing Peng, and Qing Zhang

Viewed

Total article views: 556 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
422 113 21 556 21 18
  • HTML: 422
  • PDF: 113
  • XML: 21
  • Total: 556
  • BibTeX: 21
  • EndNote: 18
Views and downloads (calculated since 26 Jul 2022)
Cumulative views and downloads (calculated since 26 Jul 2022)

Viewed (geographical distribution)

Total article views: 527 (including HTML, PDF, and XML) Thereof 527 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Latest update: 28 Mar 2024
Download

This preprint has been withdrawn.

Short summary
Landslides as a kind of natural hazards are often observed on the earth. The slope angle is a key influence to their motion characteristics and deposit morphologies. In the paper, the different surface morphologies of the deposits were explained by combining their motion process. A theoretical relationship between landslides' mobility and slope angle is re-deduced based on energy conservation. The curve plotted by this formula is approximating to the experimental data of this and other studies.