I am trying to simulate landslide effect on a buried pipeline in a slope. I am trying to develop a 3D model. I am trying to mesh it as like the picture attached here. The issue is that when I am trying to partition the cell using extrude option I cannot extrude the partition at the pipe bend. All the shapes drawn in the face where the pipe starts to bend (given in the second picture) cannot be extruded towards where the pipe bend is ended. What should I do?
