Research on the Impact of Different Force Directions on the Mechanical Properties and Damage Evolution Law of Sandstone with Different Hole Diameters

Table 1

Sizes and mass of rock samples with different hole positions and diameters.

Sample no.	Hole diameter, in mm	Hole position	Average mass, in g
A00 (1234)	00	N/A	99
B05 (1234)	05	Horizontal	95
C10 (1234)	10	Horizontal	88
D15 (1234)	15	Horizontal	80
E05 (1234)	05	Vertical	93
F10 (1234)	10	Vertical	88
G15 (1234)	15	Vertical	81