Analysis of Thermal Environment and Its Influencing Factors in Deep Stope of Metal Mine

Table 8

Weighted standardized decision matrix for each indicator.

(a)

Depth/m	Excavation face length	Roadway perimeter	Initial temperature of surrounding rock	Average temperature of air flow	Water inflow	Initial temperature of water	Final temperature of water	Mass flow of air flow	Distance between air inlet and bottom elevation
-930	0.00187	0.00247	0.00191	0.00351	0.05977	0.00187	0.01385	0.01107	0.06277
-945	0.00187	0.00273	0.00193	0.00351	0.05977	0.00187	0.01385	0.01330	0.03133
-960	0.00187	0.00259	0.00196	0.00309	0.39766	0.00187	0.01385	0.01666	0.09410

(b)

Depth/m	Efficiency of electromechanical equipment	Power of electromechanical equipment	The number of equipment	Specific heat capacity of ore	Temperature difference between ore and air	Surface area of filling body	The number of worker at the working face	Daily gunpowder consumption
-930	0.00187	0.00187	0.00187	0.00187	0.04369	0.03828	0.01913	0.04739
-945	0.00187	0.00187	0.00187	0.00187	0.08309	0.04421	0.02389	0.02147
-960	0.00187	0.00187	0.00187	0.00187	0.19253	0.08843	0.01433	0.03159