Civil Engineering Reference
In-Depth Information
(a)
(b)
(c)
(d)
(e)
(f)
Figure 1.4
Influence of geological conditions on stability of rock cuts: (a) potentially unstable—discontinuities
“daylight” in face; (b) stable slope—face excavated parallel to discontinuities; (c) stable slope—discontinuities
dip into face; (d) toppling failure of thin beds dipping steeply into face; (e) weathering of shale beds undercuts
strong sandstone beds to form overhangs; (f) potentially shallow circular failure in closely fractured,
weak rock.
