Research Article

Identification of Mine Water Inrush Source Based on PCA-FDA: Xiandewang Coal Mine Case

Table 1

Training sample data (unit: mg/l).

Sample numberIndicators of water chemical compositionAquifer
HardnessPHNa++K+Ca2+Mg2+Cl-SO42-HCO3-

1199.717.3611.9562.3210.7014.89106.19108.59I
2182.197.9016.3252.7112.2811.3530.46200.72I
3224.737.5315.6364.1315.6913.8316.46261.11I
4271.787.5015.4079.5617.7514.1854.33277.59III
5246.257.8314.2570.7416.9019.1542.39244.64III
6278.297.5946.2168.3426.1418.0879.30331.88III
7252.267.6824.6064.3322.2512.4156.39281.25III
8204.218.05164.3837.8826.6334.3939.10578.36III
96.427.60145.5324.6512.8972.699.47393.50II
1011.447.6079.7863.5311.0734.3926.75366.05II
1111.518.77299.102.811.0985.10130.48444.75II
120.4510.50323.242.200.00323.240.002.20IV
1310.519.30307.152.400.0067.3740.75440.48IV
1410.519.30307.152.400.0067.3740.75440.48IV