Stress Evolution Mechanism and Control Technology for Reversing Mining and Excavation under Mining-Induced Dynamic Pressure in Deep Mine

Table 4

Maximum separations of roof.

No.	1	2	3	4	5	6	7	8	9	10
3.0 m	2 mm	3 mm	2 mm	9 mm	3 mm	2 mm	4 mm	2 mm	1 mm	2 mm
6.0 m	0	0	0	0	0	1 mm	0	0	0	0