Application of Catastrophe Progression Method on Forecast Floor Water Inrush

Based on fundamental of catastrophe progression method,one new multi-index synthesis forecast method was put forward,which is for coal seam floor water inrush hazard.The following indexes as aquifer water pressure and watery,fractures water diversion,thickness of water proof layer and tectonic distribution were applied as evaluation indexes.According catastrophe progression of practical example of floor water inrush,classification of catastrophe progression on the basis of practical inrush situation was divided.So water inrush hazard class in coal seam floor could be forecast and evaluation.At the last,the method was applied on other examples,and contrast to the practical situation,its feasibility and effectiveness were verified.The results showed that the method did not need to be empowered,so subjective factors could be decreased in some degree,calculation process simple and forecast results was precision.