Experimental and Numerical Investigation on Hydraulic Fracture Propagation Law of Composite Rock Materials considering the Disturbing Stress Effect

Table 6

Experimental scheme for hydraulic fracturing of composite rock materials.

Test name	Confining pressure (MPa)			In situ stress coefficient	Bedding plane cementation strength (MPa)	The injection rate of fracturing fluid (m^-3/min)
	2-1	4					3	0.25	0.28	0.0005
2-2	4		3	0.25	0.84	0.0005
2-3	6		3	0.5	0.28	0.0005
2-4	6		3	0.5	0.84	0.0005