Mechanical Characteristics and Energy Evolution Laws for Red Bed Rock of Badong Formation under Different Stress Paths

Table 6

The energy parameters under different confining pressures.

Specimen no.	σ3 (MPa)	(kPa)	(kPa)	(kPa)	(kPa)	(kPa)	(kPa)	Urel (kPa)
b2-1-1	0	212.43	217.02	0	212.43	146.18	70.84	141.59
b2-3-1	2	246.28	314.16	2.52	243.75	305.95	8.2	235.55
b2-3-2	4	272.39	405.73	4.66	267.72	389.96	15.77	251.95
b2-3-3	8	296.4	348.28	67.01	229.38	346.73	1.55	227.83
b2-3-4	16	817.65	1426.83	61.99	755.66	1181.17	245.66	510

is the TAE when the stress reaches the RS.