御殿山地すべりの移動機構

Abstract

For grasping the charactaristics of the Gotenyama landslide, we executed investigations bymeans of internal strain gauge, tiltoneter, extenso-meter, bedrock survey and electric survey.As the result of these, we got the following1) This area didn't move as one large mass, but as some small blocks, moving directions ofwhich were not the same.2) Sub-slide surface was moved by astimulation of the movement of upper slide mass.3) Movement of ground surface layer suffered remarkable effects of anow-fall<and thaw.4) We gxecuted cutting of upper part mass, on the ground that the upper part mass oflandslide area accelerated the movement of lower part mass. Consequently, the movementof lower part have been stopping.