Experiment Study of Outburst Pulverized Coal-Gas Two-Phase Flow and Characteristic Analysis of Outburst Wave

Table 3

The propagation speed of outburst wave under different initial gas pressure.

Distance from outburst port/m	/m/s			/m/s
	0.5 MPa	0.3 MPa	0.1 MPa	0.5 MPa	0.3 MPa	0.1 MPa
0.5	31.15	20.72	3.68	359.20	352.66	342.22
2.5	31.15	19.00	2.63	359.21	351.59	341.58
5.5	26.57	14.98	1.32	356.31	349.10	340.79
7.5	5.83	2.92	0.61	343.52	341.76	340.37