2023年6月27日 · Ore pass is a shaft for transporting and storing ore or waste rock by self-weight. Its structure is mainly composed of the upper receiving pass (ore chute), the shaft body, and the lower structure (ore bin and chute opening).
Aimed at the problem to plug the main ore pass with the large collapse at Xingshan Iron Mine, the viscosity-time test and the heap perfusion test of cement-silicate grout in a loose rock mass are ...
2013年6月23日 · This work presents a brief numerical study of the influence of fragmentation on interlocking hang-up phenomena. Fragment interaction and breakup are simulated numerically by combining the impulse-based energy tracking method (ETM) and the finite element method (FEM) in three dimensions.