Experimental and Numerical Investigation of Energy Evolution Characteristic of Granite considering the Loading Rate Effect

Table 7

Microscopic parameters of grain contacts.

Contact	(GPa/mm)	(GPa/mm)	(MPa)	(MPa)	(°)
Quartz-quartz	836	418	47.69	201	8
Quartz-potassium feldspar	561	281	46.31	198	8
Quartz-plagioclase	502	251	32.59	187	9
Quartz-biotite	452	226	46.36	179	7
Potassium feldspar-potassium feldspar	365	183	52.26	169	8
Potassium feldspar-plagioclase	469	235	45.46	185	9
Potassium feldspar-biotite	359	180	32.15	179	9
Plagioclase-plagioclase	452	225	30.26	194	8
Plagioclase-biotite	587	294	29.68	161	7
Biotite-biotite	550	275	61.57	171	8