岩盤斜面の崩壊危険度のステレオネットを用いた簡易判別法について

概要

論文の詳細を見る
If an ``Angle Line'' defines the straight line from the center of a projection net to the middle point of great circle (arc) which represents the dip of the planar direction on an equal - angle projection net, the dip of geological separation is indicated by the Angle Line as well as by great circle. The ``Angle Line'', may enable us to classify the rock slopes ultimately into six types : Dip Slope Type I (φ>β), DipSlopeType II (α>β>φ), Dip SlopeType III (β>α), Scarp Slope Type I (φ>90-β), Scarp Slope Type II (α> 90-β>φ), Scarp Slope Type III (90-β>α), Where, α = the dip of the rock slope, β = the dip of main geological separation in the rock slope, φ = the frictional angle of sliding. My field reseach on the rock slopes along the Kuji Glen evidently shows that it is only the rock slopes of our Dip Slope Type II that have scars of large failures on them. This proves that classification of rock slopes on the basis of the Angle Line is effective for preventing rock slope failures.
一般社団法人日本応用地質学会の論文
1990-03-25