Experimental Study on the Difference of Shale Mechanical Properties

Table 1

Research categories and objectives.

Experimental category	Shale type	Bedding angle/azimuth	Objective
Uniaxial compression; Brazilian splitting; Wave velocity	Outcrop shale	0°, 30°, 45°; 60° and 90°	Anisotropy; Transversely isotropic
	Deep shale	90°	Deep/outcrop shale comparison of mechanical performance