Abstract：The stability of consequent rock slope is related to the intersecting angle between the strike directions of the cutting slope and strata，but the exact relation is always unknown in specific practical cases. The unstable rock mass on the bedrock with a high dip angle may be dug out. But it may be very expensive to dig all rock mass on the bedrock with medium and low dip angles. So the relaxation region of consequent rock slope is greatly concerned. According to the modeling tests，the method to determine relaxation region is explained. And the upper limit of intersecting angle between the strike directions of the cutting slope and strata is also obtained.
