Abstract: In terms of serious water gushing of vertical shaft under the condition of complicated hydrogeology of some coal mine，the paper analyzes water gushing mechanism of vertical shaft deeply by adopting a comprehensive research method combined theoretical analysis with numerical simulation.It applies the grouting material based on Marithan N by a series of experimental study, combining features of shaft surrounding rock with change rules of seepage field in the groundwater. At the same time,considering the function of body of water,it analyzes the effects of Marithan N in the process of grouting of vertical shaft by means of numerical simulation of inflow of water used by grouting sealing of vertical shaft from FLAC^3D.At last, after testing, water inflow of coal mine is smaller than 0.05 m³/h, it achieves the prevention of rupture of shaft lining, sealing water, at the same time, it curbs additional pressure from shaft lining.