Prediction of water inrush from the seam roof in coal mine based on multi-factor analysis of GIS

Water inrush is one of the serious disasters in coal mine, which are controlled by various conditions, geology, hydrogeology, rock mechanics, mining activity and so on. So it is quite difficult to predict accurately as yet where water inrush will happen and how much water there is, especially when we have little hydrogeological information to evaluate the probability of potential risk directly. Therefore, it is significant to find new methods to predict water bursting on the complex geological situation. Based on the analysis of geological conditions in research area, some key factors involved in water inrush from overlying aquifer of the seam were picked up, and then were quantified with some techniques. The failure height of coal roof caused by mining was numerically simulated with F-RFPA(2D) (Coupling System of Flow & Solid in Rock Failure Process Analysis), and the folds and faults were quantified with the fractal dimension theory. Finally, a mathematic model was constructed with multi-factor analysis of GIS, which gave a new approach to predict water disasters of coal mine.