A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Comparison of Erosion Susceptibility and Slope Stability of Repaired Highway Embankment
This paper compared the erosion susceptibility and stability of repaired highway embankment slopes, which were composed of five different erosion control and slope protection methods. Each method comprised the combination of various erosion control and stabilization methods, i.e., vetiver grass, arachis pinto, soil blanket, soil log, clay sodding, geocell, and erosion control mat. A number of tensiometers were installed at various depths ranging from 0.5-3.0 m in order to monitor both positive and negative pore water pressure and seepage flow within the slope for each section. The amount of rainfall was also monitored using a tipping bucket-type rain gauge. The erosion control performance of five sections based on field observation suggested that a section consisting of soil blanket, soil log, and clay sodding appeared to be the most effective method when the amount of rainfall is less than 1,400 mm/year. However, as the accumulated rainfall of over 3,400 mm/year, all sections were suffered from severe shallow slope failure and surface erosion. Such failure agreed well with the pore water pressure data. The value of pore water pressure coefficient (ru) observed towards the end of wet season ranged from 0.40-0.50. The back analysis indicated that the shear strength parameters (c' and φ') were respectively 10 kPa and 40 degrees when ru is 0.55.
Comparison of Erosion Susceptibility and Slope Stability of Repaired Highway Embankment
This paper compared the erosion susceptibility and stability of repaired highway embankment slopes, which were composed of five different erosion control and slope protection methods. Each method comprised the combination of various erosion control and stabilization methods, i.e., vetiver grass, arachis pinto, soil blanket, soil log, clay sodding, geocell, and erosion control mat. A number of tensiometers were installed at various depths ranging from 0.5-3.0 m in order to monitor both positive and negative pore water pressure and seepage flow within the slope for each section. The amount of rainfall was also monitored using a tipping bucket-type rain gauge. The erosion control performance of five sections based on field observation suggested that a section consisting of soil blanket, soil log, and clay sodding appeared to be the most effective method when the amount of rainfall is less than 1,400 mm/year. However, as the accumulated rainfall of over 3,400 mm/year, all sections were suffered from severe shallow slope failure and surface erosion. Such failure agreed well with the pore water pressure data. The value of pore water pressure coefficient (ru) observed towards the end of wet season ranged from 0.40-0.50. The back analysis indicated that the shear strength parameters (c' and φ') were respectively 10 kPa and 40 degrees when ru is 0.55.
Comparison of Erosion Susceptibility and Slope Stability of Repaired Highway Embankment
Sawangsuriya, Auckpath (author) / Jotisankasa, Apiniti (author) / Sukolrat, Jiraroth (author) / Dechasakulsom, Montri (author) / Mahatumrongchai, Vichian (author) / Milindalekha, Pakorn (author) / Anuvechsirikiat, Sekchai (author)
Geo-Congress 2013 ; 2013 ; San Diego, California, United States
Geo-Congress 2013 ; 1905-1914
2013-02-25
Conference paper
Electronic Resource
English
Comparison of Erosion Susceptibility and Slope Stability of Repaired Highway Embankment
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