Research Article

Blast-Casting Mechanism and Parameter Optimization of a Benched Deep-Hole in an Opencast Coal Mine

Table 2

Correlation matrix of original variables.

qbHaWVLVsVqη

Q1.000.11−0.20−0.04−0.090.240.14−0.13−0.280.44
B0.111.00−0.18−0.210.52−0.26−0.24−0.06−0.03−0.31
H−0.20−0.181.000.020.180.610.310.820.870.14
A−0.04−0.210.021.00−0.040.110.15−0.07−0.090.22
W−0.090.520.18−0.041.000.010.000.290.31−0.23
V0.24−0.260.610.110.011.000.680.720.560.78
L0.14−0.240.310.150.000.681.000.260.290.74
Vs−0.13−0.060.82−0.070.290.720.261.000.870.13
Vq−0.28−0.030.87−0.090.310.560.290.871.000.03
η0.44−0.310.140.22−0.230.780.740.130.031.00