Multi-Factor Coupled Numerical Simulation and Sensitivity Analysis of Hysteresis Water Inundation Induced by the Activation of Small Faults in the Bottom Plate Under the Influence of Mining

A major danger that significantly raises the possibility of deep coal mining accidents is the delayed water influx from the bottom plate, which is brought on by the activation of tiny faults brought on by mining at the working face of the restricted aquifer. This study develops 17 numerical models utilizing FLAC3D simulation software 6.00.69 to clarify the activation and water inburst mechanisms of minor faults influenced by various parameters, incorporating fluid–solid coupling effects in coal seam mining. The developmental patterns of the stress field, displacement field, plastic zone, and seepage field of the floor rock layer were systematically examined in relation to four primary factors: aquifer water…

• NN
  National Natural Science Foundation of China

  Awards: 42402255, U24B2041, 52274079
• NS
  Natural Science Foundation of Henan Province

  Award: 242300421246