Ground Stress Analysis and Automation of Workface in Continuous Mining Continuous Backfill Operation

The cost, complexity, lack of filling space and time create challenges in the longwall backfill operation, resulting poor subsidence control reduced productivity. This paper proposes an automated continuous mining (CMCB) method by examining its key requirements investigates optimum sequence coal panel (such as drifts) excavation to ensure ground strata at relatively high CMCB adopts highwall technique underground, which enables easier automation workface. A numerical simulation Changxing mine China was undertaken, five different sequences were investigated, using parameters (assuming a 4 m width cut, 5 height for 200 long slice) determine resource excavation. plastic zones vertical displacement across models analyzed. Simulation results seam show that odd-even slice (OES) sequence, has 74 mm, is most efficient method, due effective stress redistribution lower induced displacement.