Study on Slope Failure of Highway Embankment No.1194 Mae Sariang - Mae Saplaep Route sta. 21+150
Keywords:
Slides of embankment, Erosion, Limit equilibrium methodAbstract
Highway embankment constructed on slope area or the hill slope usually face problem in stability that can have great impact on road users. The article present the study of the stability of the embankment of Highway No. 1194 from Mae Sariang to Mae Samlap in Mae Hong Son Province by collecting the soil sample to test its’shear strength in normal moisture content and in high moisture content. The Limit Equilibrium method was used in the analysis. The result shows that the embankment having normal moisture content is under a safe condition. However, the embankment with high moisture content would be unsafe if there were an earthquake. When the water factor at the toe of embankment where erosion takes place was taken into account, the slope was found to be eroded gradually at the shallow embankment toe. The erosion then expands along with slides up to the surface layer. The study demonstrates that loss of stability of the embankment in the area happens from high moisture content in the soil and erosion by water at the embankment toe.
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