Abstract
Niigata prefecture, it is well known as the occurence areas of landslides in Japan. Most of these landslides concentrate on south-western parts of the prefecture. Every year, extensive damages have been inflicted in these parts by disaster of landslide. Therefore, countermeasure for preventing such disaster must be done urgently.
For discussing stability of slopes in landslides areas, it must have full knowledge of soil properties in soil engineering aspect in these places. However, the investigation and research from soil engineering point of view are not sufficient.
The accumulated data obtained at various locations in Niigata prefecture are analyzed, and some soil properties of landslide areas are made clear. Moreover, the tests based on soil engineering aspect were performed and a few important facts can be detected.
