Abstract
As the relation between the topography and movement become distinctly at the developed stage of a block type landslide, the forms of landslides were classified into I, II, III, IV. The mode of landslide movement in type I is usually considered to be translation, however, in the others types it might be accompanied with plane rotation movement (Sasaki, Araya 2000).
In this study, the above relation was considered as three dimension. At first the shapes of sliding surface were modified from the geological data of the typical developed landslide type I, II and III. And the modes of movement were considered as kinematics, then these were verified by the model experiment; the modes of movement that type I is translation and type II/III is plain rotation were occurred regulated by the shapes of sliding surface. In addition how this movement formed the topography of landslide was clarified.
Consequently the relation between the shapes of sliding surface, the modes of movement and the topogra-phy of landslide was generalized as block type landslide.
