Establishment & application of quantitative evaluation model for inrush water sources of coal mine

Aiming at the present insufficiencies and problems existed in the evaluation on threatening degree of water disaster of coal mines, as well as various threatening degrees, the paper, based on different threatening water sources, proposes quantitative grading evaluation technology and quantitative division standard of threatening degrees, and suggests corresponding water prevention measures and advices. With the practical application of quantitative evaluation technology of threatens caused by water disaster in Longtan coal mine in Sichuan Provinces, Lvshuidong coal mine and Liziya coal mine, threat level of water disaster during the process of advancement and recovery has been evaluated fairly precisely, thus standardized the evaluation and prevention of water disasters of coal mines and guaranteed systematic, precise, economic and orderly progressing of water prevention and treatment.