Table 1. Experimental Categories and Parameters.

			in situ stress/(MPa)
experiment category	sample number	bedding angle β/(°)	σV	σH	σh	horizontal stress difference coefficient	pumping mode
hydraulic fracturing with different bedding angles	L-1-1	0	20	10	10	0	constant-displacement pressurization
	L-1-2	13
	L-1-3	23
	L-1-4	67
	L-1-5	77
	L-1-6	90