Experimental Study on Compression and Torsion Fracture within 3D Printed Cementation-Weak and Porosity-High Sandstones

Table 2

Upper/lower limits of physical and mechanical indexes of Cretaceous sandstone cores.

Shaft sinking site(number of cores)	(g/cm^3)	(%)	(MPa)	(MPa)	(MPa)	(°)	(GPa)
HLS(40)	1.87	29.2	4.4	0.21	0.70	31.0	1.30	0.28	0.46
MDCD(24)	1.99	25.2	17.1	0.04	0.11	40.5	0.19	0.37	0.34
MLM(12)	1.93	32.2	8.3	0.83	—	—	0.38	0.23	3.44
MKQ(29)	2.29	18.1	5.6	0.20	0.38	36.2	0.33	0.30	0.56
NLH(15)	1.92	28.0	13.5	0.51	0.46	35.8	1.77	0.26	3.44
DHZ(17)	1.89	29.2	4.9	0.04	0.02	34.0	0.01	0.39	0.10
MC(29)	2.21	8.98	16.8	0.69	3.33	28.6	1.08	0.26	5.80
HJH(3)	2.42	12.9	20.5	—	1.24	38.5	—	0.29
BET(14)	1.94	27.5	4.1	0.10	4.80	29.2	0.52	—	0.21