多角形法による地下すべり面の推定 : 地すべり地における四次元測量の利用法

概要

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The surface geometry of a landslide, which is defined by the shape, orientation and depth of a slide surface or zone, is essential for stability analysis and for the design of remedial works. This note sets out to demonstrate the accuracy of a technique that utilizes the field surveying of surface displace ments to presume the position and shape of the underlying slide surface.<BR>The technique designated as “polygonal method” presumes the slide surface profile beneath a landslide by a polygonal approximation on the projective plane parallel to a direction of landslide movement.<BR>The accuracy of the technique is examined against results of Komoro landslide analyzed by the method of rotational slide assumption and Narao landslide precisely located by a number of field borehole tests.
社団法人日本地すべり学会の論文