Risk Prediction of Coal and Gas Outburst Based on Abnormal Gas Concentration in Blasting Driving Face

Table 2

Correlation between the growth rate, peak value, and decay rate of gas concentration and value.

Correlation coefficient	value (cm^3/g·min^1/2)	Growth rate (%/s ×10^-3)	Peak value/%	Decay rate (% ×10^-2)
value	1.00	0.85	0.92	0.79
Growth rate	0.85	1.00	0.87	0.72
Peak value	0.92	0.87	1.00	0.84
Decay rate	0.79	0.72	0.84	1.00