Research the Effect on Bedding Slope Stability of Angle Between Weak Intercalation Strata and Slope Surface

Analysis of slope instability is an important research topic in subgrade engineering and it is of great significance to analyze main control factors of slope instability. Weak intercalation is one of the main factors to control the stability of rock, particularly those mudding interlayer, which is a very weak structural surface. In condition of containing mudstone interlayer, this paper mainly consider the effect on gently inclined bedding slope stability of angle between weak intercalation strata and slope surface. By means of three-dimensional numerical analysis, conclusion is obtained: without considering the effect of fissure water, when angle between weak intercalation strata and slope surface is 5°∼20°, the impact of bedding should be fully considered because it has great influence on the slope; when the angle is more than 30°, the bedding slide of slope can be ignored, and slope treatment can be as general.