Open AccessStability of Railway Embankment in Saturated and Unsaturated Conditions
Author(s) -
Mohammad Jawed Roshan,
Ahmad Bukhairi Md Rashid,
Norhaliza Abdul Wahab,
Muhammad Azril Hezmi,
Siti Norafida Jusoh,
Mastura Azmi
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1153/1/012007
Subject(s) - levee , geotechnical engineering , safety factor , factor of safety , environmental science , infiltration (hvac) , slope stability , surface runoff , hydrology (agriculture) , geology , meteorology , geography , ecology , biology
Slope failure is a vital issue in civil engineering infrastructures. Besides, climate change implications made this problem more critical. Therefore, in this study, a railway embankment’s slope stability has been studied in saturated and unsaturated conditions. The soil sample was collected from Universiti Teknologi Malaysia, Johor Bahru. The necessary and required data obtained through lab experiments. The obtained data from lab experiments then used in Seep/W and Slope/W to model the railway embankment numerically. The results obtained from this study indicate that rainfall infiltration plays a vital role in the safety factor value. The obtained results also depicted that both rainfall intensity and duration play an important role in slope stability. The factor of safety showed a declining pattern with increasing rainfall and duration of rainfall. The safety factor decrement occurred since the matric suction was reduced (negative pore water pressure) by rainfall infiltration. Besides, the safety factor decrease was more acute when train load was applied in a rainy period. Thus, it is suggested that in a long period of rainy time, the railway authorities should stop the train operation, or the embankment stability should be increased using some stabilizations methods in the planning and designing stage.