Study On Numerical Simulation Of Ground Movement In Steep Coal Seam Mining

It is a new topic that rule of ground movement in steep coal seam mining, the overlying rock of steep coal seam mining have different homogeneousness in horizontal orientation. It's complexity make the research of this kind of problem process is very inadequate. There are 100 steep coal in 20 mining district in China, the problem of miming subsidence is very general, so the research is of theory mining and practical value. On the foundation of the item of "the rule of round movement in steep coal seam mining "with Liaoning Technical University, according to the complex mining and geological conditions of deep excavation in zhaoge mine, similarity model test and numerical simulation is carried out for studying on the rule of strata movement and surface subsidence due to coal extraction in zhaoge mining district. The results are of tutorial impact for practical mining and governing of subsidence hazards.