地すべり発生機構に関する二・三の知見 (破砕帯地すべりの一例)

Abstract

Explanation of landslide mechanism is described from extensometer's and internal strainmeter's records. There are both a creeping landslide and a brittle landslide. Landslide surfaceseems to shift from one place to another. Analyzing the onset time of these records makes clearthat rupture occures in middle landslide slope and is propagated bilateral along a slope at a fewmeters per an hour or unilateral along a slope at dozens of meters per an hour. Extensometer'srecord put between head cliff makes clear that rise time in landslide is about ten and odd hours.