Study on floor water inrush mechanism of deep seam in Hanxing Mining Area

in order to discuss the water inrush fmechanism of a seam foo under conditions of deep mining depth and igh prssurized water with an analysis on the foor water inush features of Hanxing Mining Area,from a study on the rock stouctre,underground water dynanic lin ar elatic frcturing and other mechanics,the paperfrity provided the water inush mechanism of the seanm for wih " time sections and divided zone breaking . From the space,there were four water isolated geological elements dtiviced the aquifer in the thin limestone betwee the No.2 seamo of the main mining seam in the top group seam and Oordovicianlimnestone aquifen of the :oal measure fcor.Based on the water resistance capactythe foor rocks of the seam were divided to 11 water resistance " subzones "t hre were ts foor water inrushmodels established and the material basic conditons to make the high pressuized water breaking through each zon e from bcoton to the to were interpreted. From a wew of the time,the process to form the sean foor seepage and water inrush channel was drided to four " ime-ecions" and thecertan condton of at time sectonwas defined. Incombination wth the mechanics analysis a comprehensive discriminant of the for water inush was provided in ovderto poide the decson to preventand control the water inrush process with " time section and subzone breaking through".