Using Multiple Methods to Predict Mine Water Inflow in the Pingdingshan No. 10 Coal Mine,China

To ensure safe mining of the no. 2 coal seam in the Pingdingshan No. 10 coal mine, three methods (analogue, big well, and numerical simulation) were used to forecast mine water inflow and their performance. The big well method predicted the largest water inflow: 233.8 m³/h in the ?230 m level and 281.1 m³/h in the ?300 m level. The numerical simulation predicted the least inflow, 205.7 and 228.6 m³/h respectively for the 230 and ?300 m levels; this was closest to the measured values. Based on this work, it appears that combining numerical simulations with other methods are a good way to accurately forecast mine water inflow.