Damage Characteristics Caused by Deep-Hole Blasting near Normal Fault and Its Effects on Coal and Gas Outbursts

Table 2

Material ratio parameters [24].

Rock type	Sand	Cement	Gypsum	Water	Coal
Rock	6.1	1.2	0.5	0.70	0
Coal seam	2.5	0.2	1.2	0.65	1.8