A Drawing System for Pole Diagram and Rose Diagram of Rock Mass Structural Surface

Table 4

The geometrical parameters and distribution of the discontinuities.

Joint group	Eigenvalues	Tendency (°)	Dip (°)	Strike (°)	Bridge (m)	Trace (m)
Joint group 3	Mean	51.11	79.83	321.11	0.42	1.0
	Standard deviation	18.84	7.9	18.84	0.15	0.41
	Distribution rate	Normal distribution	Lognormal distribution	Normal distribution	Normal distribution	Negative exponential distribution