The effect of external load to slope stability using slope/w in ft 006, section 61.50, Pulau Pinang

• Published in: IOP conference series. Earth and environmental science 2024-06, Vol.1347 (1), p.12065
• Main Authors: Muhammad Akmal, K A, Zaihasra, AT
• Format: Article
• Language: English
• Subjects: Environmental impact; external load; Factor of safety; Landslides; Multilayers; Rainfall; Safety factors; Sheet piles; Slope protection; Slope stability; Soil analysis; Soil layers; soil nail and sheet pile; Soil nailing; Soil properties; Two dimensional analysis
• ISSN: 1755-1307; 1755-1315
• DOI: 10.1088/1755-1315/1347/1/012065

Sustainability in slope protection is very important to reduce environmental impact and loss of property and life. Landslides and slope failure frequently occur due to a variety of factors. The factors that contribute to the slope failure are the external load such as heavy machinery and also rainfall. The study area for this study is slope are at FT006, Section 61.50, Pulau Pinang. The objective of this study is to identify the factor of safety (FOS) of original slope and also factor of safety after slope protection applied. The soil nailing and also sheet pile are choosing as a slope protection. The 2D modelling using Slope/W software was created and analysed. This slope consists of multi-layers soil properties with the steepest angle of 52°. This model is applying with external load to stimulate the real situation of existing slope. The result shows that the minimum FOS for slope without any external load is 0.58 and the FOS decrease to 0.28 when the external load was applied. When the soil nailing was applied to the slope, it is increase to 3.74 without external loading and 1.247 with external load. Meanwhile, when sheet pile was applied the FOS increase to 3.88 without external load but with external load it is drop to 0.39. Therefore, the soil nailing was proposed to this slope as effective slope protection.