Preprints
https://doi.org/10.5194/egusphere-2024-2138
https://doi.org/10.5194/egusphere-2024-2138
08 Jan 2025
 | 08 Jan 2025

Experimental study on granite weathered crust landslides with different residual layer thicknesses under heavy rainfall

Jingye Chen, Qinghua Gong, Jun Wang, and Shaoxiong Yuan

Abstract. Granite weathered crust exhibits a dual structure, which affects the pattern of damage on slopes. This study designed three kinds of slope models with residual layer thicknesses against the background of a landslide cluster in Mibei Village, Longchuan County, Guangdong Province. The hydrological response and deformation damage characteristics of granite weathered crust slopes under heavy rainfall conditions were analyzed and the disaster-causing mechanism of landslides was studied through physical model tests. The results show that the three types of slopes exhibit distinct disaster mechanisms. For the slope with a residual layer of 10 cm thickness, rainfall rapidly infiltrates the soil-rock interface, resulting in the formation of a temporary water table at the interface. The residual layer is rapidly saturated and is susceptible to overall flow-slip damage under seepage, with no obvious sliding surface. For the slope with a residual layer of 20 cm thickness, it takes a long time for rainfall to penetrate into the soil-rock interface. Rainwater gathered at the interface significantly reduces the shear strength of the residual soil. Slope tends to slide along the soil-rock interface at the slope toe under the traction and drag of water flow, which can result in sudden slide. For the slope with a residual layer of 10 cm thickness, no evidence of strong seepage is observed within the slope. The slope gradually slides along the wetting front under hydrostatic pressure and self-sliding force, with the circular arc sliding surface.

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Journal article(s) based on this preprint

12 Sep 2025
Experimental study on granite-weathered crust landslides with different residual layer thicknesses under heavy rainfall
Jingye Chen, Qinghua Gong, Jun Wang, and Shaoxiong Yuan
Earth Surf. Dynam., 13, 861–873, https://doi.org/10.5194/esurf-13-861-2025,https://doi.org/10.5194/esurf-13-861-2025, 2025
Short summary
Jingye Chen, Qinghua Gong, Jun Wang, and Shaoxiong Yuan

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2024-2138', Huali Pan, 24 Jan 2025
    • AC1: 'Reply on RC1', Jingye Chen, 11 Jun 2025
    • AC2: 'Reply on RC1', Jingye Chen, 11 Jun 2025
    • AC3: 'Reply on RC1', Jingye Chen, 11 Jun 2025
    • AC3: 'Reply on RC1', Jingye Chen, 11 Jun 2025
    • AC3: 'Reply on RC1', Jingye Chen, 11 Jun 2025
  • CC1: 'Comment on egusphere-2024-2138', Shun Yang, 17 Apr 2025
    • AC6: 'Reply on CC1', Jingye Chen, 11 Jun 2025
  • EC1: 'Editors comment on egusphere-2024-2138', Tom Coulthard, 14 May 2025
    • AC7: 'Reply on EC1', Jingye Chen, 11 Jun 2025
      • AC8: 'Reply on AC7', Jingye Chen, 19 Jun 2025

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2024-2138', Huali Pan, 24 Jan 2025
    • AC1: 'Reply on RC1', Jingye Chen, 11 Jun 2025
    • AC2: 'Reply on RC1', Jingye Chen, 11 Jun 2025
    • AC3: 'Reply on RC1', Jingye Chen, 11 Jun 2025
    • AC3: 'Reply on RC1', Jingye Chen, 11 Jun 2025
    • AC3: 'Reply on RC1', Jingye Chen, 11 Jun 2025
  • CC1: 'Comment on egusphere-2024-2138', Shun Yang, 17 Apr 2025
    • AC6: 'Reply on CC1', Jingye Chen, 11 Jun 2025
  • EC1: 'Editors comment on egusphere-2024-2138', Tom Coulthard, 14 May 2025
    • AC7: 'Reply on EC1', Jingye Chen, 11 Jun 2025
      • AC8: 'Reply on AC7', Jingye Chen, 19 Jun 2025

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
AR by Jingye Chen on behalf of the Authors (11 Jun 2025)  Author's response   Author's tracked changes   Manuscript 
ED: Publish subject to minor revisions (review by editor) (16 Jun 2025) by Tom Coulthard
AR by Jingye Chen on behalf of the Authors (19 Jun 2025)  Author's response   Author's tracked changes   Manuscript 
ED: Publish as is (30 Jun 2025) by Tom Coulthard
ED: Publish subject to technical corrections (04 Jul 2025) by Wolfgang Schwanghart (Editor)
AR by Jingye Chen on behalf of the Authors (07 Jul 2025)  Manuscript 

Journal article(s) based on this preprint

12 Sep 2025
Experimental study on granite-weathered crust landslides with different residual layer thicknesses under heavy rainfall
Jingye Chen, Qinghua Gong, Jun Wang, and Shaoxiong Yuan
Earth Surf. Dynam., 13, 861–873, https://doi.org/10.5194/esurf-13-861-2025,https://doi.org/10.5194/esurf-13-861-2025, 2025
Short summary
Jingye Chen, Qinghua Gong, Jun Wang, and Shaoxiong Yuan
Jingye Chen, Qinghua Gong, Jun Wang, and Shaoxiong Yuan

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The requested preprint has a corresponding peer-reviewed final revised paper. You are encouraged to refer to the final revised version.

Short summary
Rainfall caused mass landslides disaster in Mibei Village. Different types of landslides occurred in similar geologic settings, which triggered us to make the assumption that the residual layer thickness affects the landslide damage pattern. Therefore, we designed three slope models with different residual layer thicknesses for tests. The landslide damage patterns were summarized. The E1 slope is overall flow-slip damage; the E2 slope is traction sliding; the E3 slope is thrust-type slide.
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