Law of overburden strata above longwall coal mining face in high inclined seam based on FLAC3D

For the study of overburden strata movement law in high inclined seam, this paper established the model based on FLAC3D, and monitored the vertical stress and displacement of roof and floor in 25221 Large-mining-height in different forward distance, and then obtained the overburden strata space activity law by monitoring and analyzing the shield working resistance of the high inclined seam workface. The results showed that during the mechanized strike longwall coal process in the high inclined seam, the movement of overburden strata in top area was more active than the low area along the inclined direction of the coal mining face. The research conclusion provides basis for the safety management of hydraulic support.