Multi-source information fusion technology for risk assessment of water inrush from coal floor karst aquifer

In order to effectively solve the technical problem of prediction coal floor water inrush, according spatial distribution differences geological conditions, combined with typical mine, a partition calculation map development depth mineral pressure failure zone was made, and mining process under different conditions has been numerically simulated analyzed. And empirical formula is modified by numerical simulation results, mine established, which improves accuracy lays foundation for quantification evaluation indicators related aquifuge. According hydrogeological characteristics southwest mines in China, 12 determined from three aspects aquifer, aquifuge structure, an index system inrush risk karst aquifer constructed. On this basis, further using GIS technology entropy weight theory, multi-source information method proposed, verified results.