Coal seam roof water and sand inrush risk evaluation method based on multi-source information fusion

The invention discloses a coal seam roof water and sand inrush risk evaluation method based on multi-source information fusion. The method comprises the following steps: comprehensively considering hydrogeological conditions, geological conditions, mining activity influence and other factors; taking the sand bed thickness, the base mining ratio, the sand burst fracture zone development height, thebed rock weathering index, the unit water inflow, the water saturation sand bed thickness, the permeability coefficient and the mining influence index as water and sand burst risk evaluation indexes,and on the basis, through a series of specific implementation steps of establishing a mathematical analysis model, establishing a decision-making level main control factor thematic map, constructinga judgment matrix to determine index weights, superposing the decision-making level main control factor thematic map and the like, finally, displaying the quantified result in the form of a graph by utilizing data storage, spat