Dynamic Characteristics of Fault Structure and Its Controlling Impact on Rock Burst in Mines

Table 2

Empirical value of minimum elevation difference in fault structure division.

No.	Fault block grade	Topographic map scale	Least z-difference
1	I	1 : 2.5 million	500 m
2	II	1 : 1 million	200 m
3	III	1 : 250,000–1 : 100,000	100 m
4	IV	1 : 50,000–1 : 25,000	20–50 m
5	V	1 : 10,000	5–10 m