Putera Agung Maha Agung, Sony Pramusandi, Andikanoza Pradiptiya, Aldo Wirastana Adinegara, Suripto, Muhammad Idris, Ramlan Sultan, Muhammad Fathur Rouf Hasan, Adnan Zainorabidin
Indonesia's climate change, with extreme temperature and rainfall intensity fluctuations, can trigger slope sliding. The water infiltration process on unsaturated expansive residual soil types can significantly fail at the slope zone due to increasing pore water pressure in the short term. A high swelling and shrinkage due to changes in water content can generate initial movement to the toe of the slope. This study aims to select a research method to define the magnitude of deformation and safety factor (SF) of stability conditions, considering the best fit for the soil water characteristic curve (SWCC). The preparation of soil parameters during simulation is supported by physical and mechanical properties at the soil mechanic laboratory. The results indicated that the dry season was more stable than the rainy or wet season. Deformation during dry conditions (dry season) was smaller than 1.0 inch (25,4 mm) with the safety value (SF) of slope sliding larger than 1.20 and vice versa, during wet conditions (rainy season) would occur (SF = 0.152). ©2025 The authors.
Department of Civil Engineering, Politeknik Negeri Jakarta, Depok, 16425, Indonesia; Department of Civil Engineering, Politeknik Negeri Ujung Pandang, Makassar, 90245, Indonesia; Department of Environmental Science, Postgraduate School, Universitas Brawijaya, Malang, 65145, Indonesia; Faculty of Civil Engineering and Built Environment, University Tun Hussein Onn Malaysia, Johor, 86400, Malaysia
