Experimental Study on the Escape Velocity of Miners during Mine Fire Periods

Table 2

Variables entered/removed from the regression.

Model	Variables Entered	Variables Removed	Method
1	Inclination		Stepwise (Criteria: Probability-of-F-to-enter <= 0.05, Probability-of-F-to-remove >= 0.1).
2	Accessible section area		Stepwise (Criteria: Probability-of-F-to-enter <= 0.05, Probability-of-F-to-remove >= 0.1).
3	Type of the roadway		Stepwise (Criteria: Probability-of-F-to-enter <= 0.05, Probability-of-F-to-remove >= 0.1).
4		Average wind velocity	Stepwise (Criteria: Probability-of-F-to-enter <= 0.05, Probability-of-F-to-remove >= 0.1).

a. Dependent variable: the miner escape velocity.