吉野川流域における崩積土の物理特性

概要

論文の詳細を見る
Investigation of soil properties from the view point of soil engineering are indispensable for plannig the landslide contorol measures.This paper present the experimental results on physical properties of soil in Yoshino River basin. Samples are classified as sandy silt by means of soils classification based on the grain size. The sorting of this soil is generally classified as "very poorly sorted".The soil classification by means of plasticity chart indicates that 70% of the samples is inorganic clays of low or medium plasticity, of which 20% is inorganic silt of low or medium compressibility.Main clay minerals are mica chlorite in Sanbagawa zone and chlorite amphibole in Mikabu zone. The mica content has decisive influence on the compressibility and other properties of the soil. In Sanbagawa zone, the slope angls are comparatively steep but those of Mikabu zone are somewhat different. The landslide of Mikabu area resembles that of the Niigata area, but it can not be classified as the same category of Niigata by soil testings.
社団法人砂防学会の論文