Civil Engineering Reference
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Figure 2.36
Rock mechanical model of a clay slate (Fig. 2.18), Selingue project/Mali (Wittke 1990)
The majority of rock masses, within a certain homogeneous area, can be described
as a solid material (intact rock) separated by one or more sets of approximately
planar and parallel discontinuities. The intact rock may have a random or planar
grain structure. Major structural features such as master joints, faults and shear
zones generally occur as individual elements (Wittke 1990). However, in some cases
rock masses without discontinuities exist such as the tuff and the rock salt shown
in Figs. 2.19 and 2.20.
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