地質的環境のことなる地すべり地の水質特性について

Abstract

Water samples have been collected from the landslide areas of Tertiary and fractured zones toinvestigate the water quality of geologically different landslide areas. The authors have examinedthe relationships among the chemical species contents of the waters and the following have beenobtained: In general, the concentrations of calcium and bicarbonate ions show high value amongdissolved ions in the natural waters of the two landslide areas, the concentration of soluble silica inthe natural waters of landslide areas of fractured zone is low value, calcium to sodium ratio and tomagnesium of dissolved elements can draw a fairly clear between two landslide areas, montmorillonit-es and kaolinite are in equilibrium with the waters of the Kuraisbi, Maruyama, Kozuehiyama andMinamikaminaka landslide areas, and equilibrium between kaolinite and montmorillonite isattained at the concentrations of bicarbonate ions over about 80 mg/I in the natural waters oftheir investigated fields.