The Effect of Hydraulic Coupling on Mechanical Deformation Characteristics of Shallow Coal Seam in Western Mining Area

Table 1

Physical and mechanical parameters of sandstone under uniaxial compression.

Sample no.	Diameter (mm)	Height (mm)	Density (g/cm^3)	Loading rate (mm/min)	Compressive strength (MPa)	Mean (MPa)	E (GPa)	Mean (GPa)
S-12	48.76	100.07	2.38	0.5	43.33		5.55
S-22	49.11	100.66	2.36	1	55.22	51.45	6.16	5.86
S-32	49.13	100.34	2.38	5	55.82		5.88