Study on Mechanism and Main Influencing Factors of Rockburst under Complex Conditions of Hard and Deep Overburden

Table 1

Ground stress test results.

Measure point	Maximum horizontal principal stress (MPa)	Minimum horizontal principal stress (MPa)	Vertical stress (MPa)
1	26.93	13.68	24.17
2	25.23	13.88	24.38
3	24.94	13.36	24.19