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Volume 15
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Article

Slope Failure Risk Assessment Considering Both the Randomness of Groundwater Level and Soil Shear Strength Parameters

by
Pu Peng
1,
Ze Li
1,*,
Xiaoyan Zhang
1,
Wenlian Liu
2,
Sugang Sui
2 and
Hanhua Xu
3
1
Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, China
2
Kunming Prospecting Design Institute, China Nonferrous Metals Industry Co., Ltd., Kunming 650051, China
3
Yunnan Key Laboratory of Geotechnical Engineering and Geohazards, Kunming 650051, China
*
Author to whom correspondence should be addressed.
Sustainability 2023, 15(9), 7464; https://doi.org/10.3390/su15097464
Submission received: 9 April 2023 / Revised: 26 April 2023 / Accepted: 28 April 2023 / Published: 1 May 2023
(This article belongs to the Special Issue Advances in Rock Mechanics and Geotechnical Engineering)
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Abstract

Conducting research on slope failure risk assessment is beneficial for the sustainable development of slopes. There will be various failure modes considering both the randomness of the groundwater level and soil shear strength parameters. Based on the integrated failure probability (IFP), the traditional failure risk analysis needs to count all failure modes, including the failure probability (Pf) and failure risk coefficient (C), one-by-one. A new slope failure risk assessment method that uses the sum of the element failure risk to calculate the overall failure risk is proposed in this paper and considers both the randomness of the groundwater level and soil shear strength parameters. The element failure probability is determined by their location information and failure situation; the element failure risk coefficient is determined by their area. It transforms the complex overall failure risk problem into a simple element failure risk problem, which simplifies the calculation process and improves the calculation efficiency greatly. The correctness is verified with the systematic analysis of a classical case. The results show that the slope failure probability and failure risk are greatly increased from 1.40% to 3.30% and 0.829 m2 to 2.094 m2 with rising groundwater level, respectively.
Keywords: failure risk; element failure probability; spatial variability; stochastic groundwater level; upper bound method failure risk; element failure probability; spatial variability; stochastic groundwater level; upper bound method

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MDPI and ACS Style

Peng, P.; Li, Z.; Zhang, X.; Liu, W.; Sui, S.; Xu, H. Slope Failure Risk Assessment Considering Both the Randomness of Groundwater Level and Soil Shear Strength Parameters. Sustainability 2023, 15, 7464. https://doi.org/10.3390/su15097464

AMA Style

Peng P, Li Z, Zhang X, Liu W, Sui S, Xu H. Slope Failure Risk Assessment Considering Both the Randomness of Groundwater Level and Soil Shear Strength Parameters. Sustainability. 2023; 15(9):7464. https://doi.org/10.3390/su15097464

Chicago/Turabian Style

Peng, Pu, Ze Li, Xiaoyan Zhang, Wenlian Liu, Sugang Sui, and Hanhua Xu. 2023. "Slope Failure Risk Assessment Considering Both the Randomness of Groundwater Level and Soil Shear Strength Parameters" Sustainability 15, no. 9: 7464. https://doi.org/10.3390/su15097464

APA Style

Peng, P., Li, Z., Zhang, X., Liu, W., Sui, S., & Xu, H. (2023). Slope Failure Risk Assessment Considering Both the Randomness of Groundwater Level and Soil Shear Strength Parameters. Sustainability, 15(9), 7464. https://doi.org/10.3390/su15097464

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