The Numerical Simulation of Hard Rocks for Tunnelling Purposes at Great Depths: A Comparison between the Hybrid FDEM Method and Continuous Techniques

Table 4

Model configuration specifications. The intact model configurations (FEM and FDEM) and the fractured model configurations (FEM-DFN and FDEM-DFN) are listed.

Model	Element size (m)	Number of elements
FEM	0.40	12,838
FEM-DFN	0.40	21,484
FDEM	0.03	674,407
FDEM-DFN	0.05	233,453

Size assigned to the elements in the high-resolution area.