Mechanism Analysis of Floor Water Inrush Based on Criteria Importance though Intercrieria Correlation

Floor water inrush has always been an important problem affecting coal mine safety. The from the deep seam floor is final manifestation of channel formed by expansion and penetration rock mass cracks under combined action a high ground temperature, stress, karst pressure strong mining disturbance. fault structurally weak plane developed in complete layer, which can be regarded as permeable with good permeability. In order to explore location confined stratum caused tensile fracture during inrush, result joint stress. COMSOL Multiphysics numerical simulation software was used simulate advancing process working face structure. Different dip models were established for comparative analysis. objective weight CRITIC based on data volatility analyze principal stress near fault. results show that uplift strength highly increases increase angle, certain relationship body entering