Quantitative Study on the Contact Force and Force Chain Characteristics of Ore Particle Systems during Ore Drawing from a Single Drawpoint under the Influence of a Flexible Barrier

Figure 1

Schematic diagram of the mass draw and synchronous filling no-top-pillar shrinkage stoping method: (1) return airway, (2) top-pillar, (3) raise, (4) cross heading, (5) barrier pillar, (6) remaining ore, (7) drift pillar, (8) drawpoint, (9) haulage drive, (10) unmined ore, (11) filling material, and (12) barrier.