多項式を用いた地すべり地の地下すべり面形状の推定 : 地すべり地における四次元測量データの利用法

概要

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In a landslide area, variation of spatial position of marked points on the ground can be monitored by timely measurements in successive elapse. Collected data are called four dimensional surveying data, since they have dimensions of three in space and one in time.<BR>This paper intends to presume the slide surface geometry by polynomial expression derived from analysis of four dimensional surveying data of selected marked points. Applying the least square method, the technique in this paper enables to estimate the depth of slide surface under marked points on the ground directly, with necessary coefficients of polynomial expression.<BR>Various procedures for presumption of slide surface geometry on a projection plane for analysis are described. Accuracy of the presumption is discussed by simple simulation. Application of this technique to actual landslide is shown about Komoro and Narao landslide areas, and several considerations are mentioned.
社団法人日本地すべり学会の論文