Open Access

ARTICLE

On the Stability of Carbon Shale Slope under Rainfall Infiltration

Haifeng Huang¹, Zhao Li^2,*, Junhui Luo¹, Zhenchao Chang¹
1 Guangxi Beitou Transportation Maintenance Technology Group Co., Ltd., Nanning, 530029, China
2 School of Civil and Architecture, China Three Gorges University, Yichang, 443000, China
* Corresponding Author: Zhao Li. Email:
(This article belongs to this Special Issue: EFD and Heat Transfer III)

Fluid Dynamics & Materials Processing 2021, 17(6), 1165-1178. https://doi.org/10.32604/fdmp.2021.017256

Received 26 April 2021; Accepted 30 June 2021; Issue published 08 September 2021

Abstract

Carbonaceous shale is a sedimentary rock containing a large amount of dispersed carbonaceous organic material. It is easy to crack and soften when exposed to water. In the present work, the stability of such a rock and its sensitivity to the formation of infiltrations due to rainfall are analyzed numerically using the GeoStudio software. The slope stability coefficient is calculated and verified using the landslide thrust calculation method. The results show that under the action of heavy rainfall, water infiltrates into the slope layer by layer, and, accordingly, the soil volume water content is different with respect to that typical of a homogeneous soil. It is also shown that, although in an initial stage, rainfall infiltration leads to the decline of the slope stability coefficient, with the progress of rainfall, this coefficient can temporarily increase, that is, these phenomena can display a lag phase.

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Keywords

Carbonaceous shale slope; stability; volume moisture content; pore water pressure; numerical simulation

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