Analysis of the Coal Fluidization Mining Process with the Continuous-Discontinuous Coupled Particle-Block Method

In situ fluidization mining is a promising method which shows considerable potential for reducing the ecological influence impacts of coal mining. During mining, gangue will be separated from ores, filled back, and returned to excavation region, which, depending on filling rate, greatly reduces stratum deformation strata, rate. Numerical simulations can assist engineers in evaluating optimizing affordable designs with costs. Accordingly, this work, continuous–discontinuous element adopted, coupled particle–block finite-discrete an explicit integration formulation, adopted simulating mining–filling processes. The theory concept “equivalent height” utilized define backfill height. results partly reveal influences rate deformation, surface subsidence, rock burst phenomena, all further indicate advantages method.