Study on the Parameter Equation of Coal and Gas Outburst Hole

Table 7

Experimental statistics of gas pressure and volume of CGOH.

Number of tests	1	2	3	4	5
Diameter of outburst opening/mm	60	60	60	60	60
Experimental coal consumption/kg	90.703	89.277	91.064	91.55	90.654
Briquetting pressure of experimental coal/Mpa	4	4	4	4	4
Vertical stress/Mpa	4	4	4	4	4
Horizontal stress/Mpa	2.4	2.4	2.4	2.4	2.4
Gas pressure/Mpa	0.5	0.75	1	1.25	1.5
Coal quantity of CGOH/kg	0	4.387	19.581	8.226	21.846
Length of CGOH/mm	0	165	256	279	353
Width of CGOH/mm	0	119	232	172	219
Height of CGOH/mm	0	193	236	265	197
Volume of CGOH/m^3	0	0.001984206	0.00733902839616853	0.006658511	0.007974136