1Wu Q,Zhou W F.Prediction of groundwater inrush into coal mines from aquifers underlying the coal seams in China: vulnerability index method and its construetion[J].Environ Geol,2008,56(2):245-254.
2Wu Q,Zhou W F,Wang J H.Prediction of groundwater inrush into coal mines from aquifers underlying the coal seams in China: application of vulnerability index method to Zhangcun Coal Mine,China[J].Environmental Geology,2009,57(5): 1187-1195.