Data-driven stability analysis of road slopes with free groundwater

Su Min Noh; Tae Young Son; Jae Hwan Lee; Joon Kyu Lee

doi:10.22702/jkai.2025.15.2.23

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2025 Vol.15, Issue 2 Preview Page Next Page

Scientific Paper

Data-driven stability analysis of road slopes with free groundwater 자유지하수를 갖는 도로사면의 데이터 기반 안정성 해석

31 December 2025. pp. 269-283

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Abstract

This study investigates the stability of road slopes with a free groundwater surface represented by the Dupuit theory. Slope stability analysis was performed using a finite element limit analysis based on the strength reduction method. The result of the analysis is presented in terms of the stability factor and the factor of safety, and the effects of groundwater level within the slope, slope angle, soil cohesion, and internal friction angle on the slope stability are examined. A total of 756 factors of safety were obtained from the numerical analyses based on various combinations of these parameters. In addition, a data-driven model is proposed to predict the computed factor of safety. The model combines the XGBoost algorithm of machine learning with the BOHB technique of hyperparameter optimization, enabling fast and accurate prediction of the safety factor for slopes under different groundwater levels. The performance of the proposed model was evaluated in terms of R², RMSE, and MAE, yielding values of 0.998, 0.021, and 0.009, respectively. The contribution of each variable to the prediction is provided by SHAP.

Keywords

Slope

Groundwater

Factor of safety

XGBoost

BOHB

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Information

Publisher :KOREAN ASPHALT INSTITUTE
Publisher(Ko) :한국아스팔트학회
Journal Title :Journal of the Korean Asphalt Institute
Journal Title(Ko) :한국아스팔트학회지
Volume : 15
No :2
Pages :269-283
Received Date : 2025-12-05
Revised Date : 2025-12-19
Accepted Date : 2025-12-19
DOI :https://doi.org/10.22702/jkai.2025.15.2.23

Journal of the Korean Asphalt Institute ISSN:2234-0785(Print) 2635-9553(Online) 한국아스팔트학회지

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