Numerical Analysis of the Effect of Heterogeneity on Underground Roadway Stability under Dynamic Loads

Table 5

The average roof sag under the different dynamic loads.

PPV (m/s)	The average roof sag (mm)
	m
	1	3	5	100
0	95.1	53.0	46.2	37.6
0.5	102.5	59.4	51.8	42.4
1.5	129.3	79.8	69.8	54.1
2.5	158.2	107.2	94.7	76.9