The Cause of Drop of the Water Level of Underground Quaternary Aquifer of a Mine under Mining Influence

Table 5

Result of correlation analysis.

Component	Na^++K^+	Ca^2+	Mg^2+	Cl^-	SO4^2-	HCO3^-
Na^++K^+	1.000
Ca^2+	0.418	1.000
Mg^2+	0.221	0.890	1.000
Cl^-	-0.015	-0.287	-0.249	1.000
SO4^2-	0.859	0.792	0.646	-0.253	1.000
HCO3^-	-0.127	-0.657	-0.664	0.232	-0.529	1.000