Table 3: Classification result of water inrush source discriminant model.

No.Piper-PCA-Fisher

A1−142.07206.29149.1656.63−17.06I
A2−90.40191.53116.1150.59−9.54I
A3−95.34181.75133.3548.50−17.15II
A4−84.16198.67141.9553.22−19.93II
A5−97.84197.80139.0151.25−17.83II
A6−104.09164.55135.6142.21−18.16II
A7−119.44189.13148.3449.75−17.23II
A8−681.79383.94278.43135.57−28.77III
A9−301.40240.12142.8582.84−0.91III
A10−343.16309.54152.9881.43−5.34III
A11−134.12276.15163.5080.42−17.51I
A1263.320.698.2354.420.24IV
A1362.238.784.21280.4956.6IV