Multifractal Analysis of Acoustic Emissions during Hydraulic Fracturing Experiments under Uniaxial Loading Conditions: A Niutitang Shale Example

Table 5

Characteristics of visible fractures of rock samples H2 and T2.

		Direct length (mm)	Length (mm)	Width (mm)	Tortuosity
H2	I	47.50	47.69	0-0.15	1.00
	II	47.62	48.11	0-0.15	1.01
	III	/	/	/	/
	IV	/	/	/	/
T2	I	48.90	49.68	0.10-0.40	1.02
	II	47.90	48.80	0.20-0.30	1.02
	III	46.88	48.47	0.10-0.20	1.03
	IV	47.36	47.83	0.05-0.15	1.01