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

Table 6

Roof subsidence with different bolt lengths.

Dynamic time (s)	Roof subsidence (mm)
	L = 1800 mm	L = 2000 mm	L = 2200 mm	L = 2400 mm
T = 0.00 s	56.73	56.27	57.83	57.65
T = 0.02 s	56.68	56.34	57.87	57.65
T = 0.04 s	65.42	67.81	67.09	66.34
T = 0.06 s	77.82	77.22	75.64	74.06
T = 0.08 s	111.53	110.70	108.72	106.30
T = 0.10 s	174.89	171.14	169.71	165.87