Characteristics Analysis of Generalized Rock Quality Designation (RQD) Based on Degree of Joint Development

Figure 2

Illustration of 3D fractures (spacing: 1 m; trace length: 8–14 m): (a) 3D plane network model; (b) dominant group set 1; (c) dominant group set 2; (d) dominant group set 3.

(a)

(b)

(c)

(d)