Fig. 4

The normal stress distribution in (a) the low-angle model with the maximum normalized value of 3.8 times of the static yield, and in (b) the high angle model with a maximum normalized stress of 3.6.

The normal stress distribution in (a) the low-angle model with the maximum normalized value of 3.8 times of the static yield, and in (b) the high angle model with a maximum normalized stress of 3.6.