Figure 8
From: Accurate measurement techniques and prediction approaches for the in-situ rock stress

Comparison between the predicted values using the BPNN model and measured values of the three principal stresses in the Sanshandao gold mine (a), Xincheng gold mine (b), Linglong gold mine (c), Pingdingshan No. 1 mine (d), Pingdingshan No. 10 mine (e), Meishan iron mine (f), and Beiminghe iron mine (g).