斜面安定における弱層の銘響について

概要

論文の詳細を見る
Weak layer, such as fault or fractured zone has great effects on stability of slope. These effects are divided into two types. One is the weakness of rock masses which consist natural slope along road, route 41. As for the latter type,three examples are explained. For shigeto-landslide in Ko^-chi prefecture, ground water ran into the sliding mass along the faults. Slightly weak zone compared to surrounding parts was found after slope failure occurred, and at that time, many field tests were carried out. Concerning the slope failure which occurred in the fault zone located in the upper part of a cutting slope, stability analysis using finite element method is performed. In this case, distribution of point safety factor in slope, calculated by using computer, is considered in connection with four stages of slope, namely, natural slope, cutting slope for railway, cutting slope first designed for road, cutting slope designed for road with amendment. The change of safety factor by condition of faults by which rock mass forms a sliding wadge is discussed by using vector analysis.
一般社団法人日本応用地質学会の論文
1981-03-30