Abstract：According to the investigation of surface water,water quality testing and rock combined with rich water data,based on research on two Changcun second panel coal mined-out area water sources,combined two second tectonic plate boundaries F3 and F8exploration and expose fault information,the effect of water on the coal in the adjacent area of the two second tectonic plate is analyzed. The width of the waterproof coal pillar is calculated according to the provisions of the coal mine water prevention and control,and the prevention and control measures are put forward from the surface of Jian river,south open-pit mine water treatment,surface cracks and subsidence control and drainage system upgrade. This study provides a reference for the prevention and control of coal mine goaf water,to ensure the safety of mine production.

Keyword：goaf water;influence degree;prevention and control measures;Changcun coalmine;