Factors Analysis and Control Measures of Water Inrush at Yi'an Coal Mine FX002 Working Face

Through analyzing the geological conditions and geophysical prospecting data of the coal face,the threat of Ordovician limestone confined aquifer to the normal production of the face is ruled out.The water inrush factors are analyzed after the face watered and water samples for water quality are tested timely.The result shows that the sandstone aquifer in part of floor and the L₇ limestone aquifer are the main reasons for the face flood hazards,and the water control measures are put forward too.