Investigation on Energy Evolution and Storage Characteristic of CSTBD Red Sandstone during Mixed-Mode Fracture

Table 3

Basic physical mechanical and energy parameters.

	Specimen ID	(g/mm^3)	(km/s)	(kN)	(mm)	(J)	(J)	(J)	(J)
10°	10-S-1	2359.385	3.101	0.278	4.640	563.79	420.73	143.06	2.941
	10-S-2	2377.776	2.956	0.319	4.850	591.46	441.40	150.06	2.941
	10-S-3	2363.182	3.001	0.310	4.600	568.36	424.14	144.22	2.940
	10-S-4	2368.277	3.008	0.278	4.740	518.50	386.90	131.60	2.940
	10-S-5	2682.261	2.987	0.279	4.760	627.36	468.13	159.23	2.940
20°	20-S-1	2509.458	2.990	0.298	4.630	563.81	422.25	141.56	2.983
	20-S-2	2611.053	2.980	0.285	4.610	583.82	437.22	146.60	2.982
	20-S-3	2360.333	3.010	0.249	4.380	515.65	386.22	129.42	2.984
	20-S-4	2372.067	2.899	0.275	4.590	594.67	445.34	149.33	2.982
	20-S-5	2351.829	3.009	0.297	4.830	675.46	505.77	169.69	2.981