基于NPCA-GA-BP神经网络的采场稳定性预测方法

谢饶青,陈建宏,肖文丰

Prediction Method of Stope Stability Based on NPCA-GA-BP Neural Network

Raoqing XIE,Jianhong CHEN,Wenfeng XIAO

表4 前4个主成分及其累计贡献率

Table 4 The first four principal component and its accumulated contribution rate

因素 Y1 Y2 Y3 Y4 X1 0.133 0.497 -0.420 -0.212 X2 0.064 0.008 -0.058 0.072 X3 -0.032 -0.007 -0.024 -0.086 X4 0.040 0.544 0.641 0.165 X5 -0.002 -0.212 0.131 -0.882 X6 0.113 0.587 -0.319 -0.168 X7 0.054 0.119 0.378 -0.170 X8 0.035 0.084 0.380 -0.157 X9 0.970 -0.146 0.041 0.015 X10 0.136 -0.162 -0.029 0.234 特征值 0.067 0.043 0.028 0.016 贡献率/% 38.0 24.7 16.3 9.5 累计贡献率/% 38.0 63.6 79.9 89.4