Effects of the Rainfall-Triggered Lisse Effect on the Stability of Loess Slopes

Zhizhou Yang; Donghui Cheng; Jun Xia

doi:10.1007/s12583-021-1536-6

Volume 35 Issue 4

Aug 2024

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Journal of Earth Science > 2024 > 35(4): 1254-1262.

Zhizhou Yang, Donghui Cheng, Jun Xia. Effects of the Rainfall-Triggered Lisse Effect on the Stability of Loess Slopes. Journal of Earth Science, 2024, 35(4): 1254-1262. doi: 10.1007/s12583-021-1536-6

Citation:

Zhizhou Yang, Donghui Cheng, Jun Xia. Effects of the Rainfall-Triggered Lisse Effect on the Stability of Loess Slopes. Journal of Earth Science, 2024, 35(4): 1254-1262. doi: 10.1007/s12583-021-1536-6

Zhizhou Yang, Donghui Cheng, Jun Xia. Effects of the Rainfall-Triggered Lisse Effect on the Stability of Loess Slopes. Journal of Earth Science, 2024, 35(4): 1254-1262. doi: 10.1007/s12583-021-1536-6

Citation:

PDF( 1269 KB)

Effects of the Rainfall-Triggered Lisse Effect on the Stability of Loess Slopes

doi: 10.1007/s12583-021-1536-6

Zhizhou Yang^{1, 2, 3
,},
Donghui Cheng^{1, 2, 3
,
,
,},
Jun Xia^{4, 5}

1.
School of Water and Environment, Chang'an University, Xi'an 710054, China
2.
Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of the Ministry of Education, Chang'an University, Xi'an 710054, China
3.
Key Laboratory of Eco-Hydrology and Water Security in Arid and Semi-Arid Regions of the Ministry of Water Resources, Chang'an University, Xi'an 710054, China
4.
Key Laboratory of Water Cycle & Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
5.
State Key Laboratory of Water Resources & Hydropower Engineering Sciences, Wuhan University, Wuhan 430000, China

More Information

Corresponding author: Donghui Cheng, chdhbsh@chd.edu.cn
Received Date: 10 Apr 2021
Accepted Date: 29 Aug 2021

Available Online: 16 Aug 2024

Issue Publish Date: 30 Aug 2024

Abstract

Abstract

This paper coupled a water-air two-phase hydrodynamic (WATPH) model with the Iverson's method to analyze the influence of the Lisse effect on the fast groundwater pressure (P_w) response and the slope stability. Furthermore, the sensitivities of the driving force and loess soil parameters were investigated. Results showed that the WATPH model simulated the height and rise of the depth to the water table reasonably well. The depth to water table before rainfall (H₀) had a significant impact on the Lisse effect and the slope stability. When the H₀ was less than approximately 1 m, the rainfall triggered a significant Lisse effect and decreased the slope factor of safety (F_s). When the rainfall intensity (R_i) was higher than the saturated hydraulic conductivity (K_s), the Lisse effect and the Fs slightly changed with the increase of the R_i, and the slope tended to be unstable with continuous rainfall. With increasing K_s, the Lisse effect noticeably increased, and the minimum F_s quickly decreases. The analysis of the normalized sensitivity coefficient revealed that H₀ had a dramatic impact on the Lisse effect and loess slope stability. The different R_i and K_s values had prominent influences on the Lisse effect and slight impacts on F_s.
- Lisse effect,
- landslides,
- safety factor,
- rainfall

Conflict of Interest
The authors declare that they have no conflict of interest.

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References(33)

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