Parametric Study on the Ground Control Effects of Rock Bolt Parameters under Dynamic and Static Coupling Loads

Table 9

Roof subsidence with different bolt diameters.

Dynamic time (s)	Roof subsidence (mm)
	φ = 16 mm	φ = 18 mm	φ = 20 mm	φ = 22 mm
T = 0.00 s	56.10	56.90	56.34	55.87
T = 0.02 s	56.10	56.99	56.34	55.89
T = 0.04 s	69.66	68.87	67.81	67.32
T = 0.06 s	78.08	77.88	77.22	77.00
T = 0.08 s	111.80	110.05	110.70	110.44
T = 0.10 s	171.55	171.40	171.14	170.40