Abstract: Based on the analysis of the moving forms of rock damage state, different subsidence models are built respectively according to the relative theories of mechanics of materials and mining subsidence, and the calculation formula of rock movement and deformation under the mining are derived in this dissertation. Through the two medium models of the relevant coupling, this research forms a mining subsidence model of double-medium subsidence space layered transmission. Meanwhile, the corresponding calculation and visualization program are also designed in this study. This model can not only calculate rock and surface subsidence, but also analyze and calculate the damage state and fracture height of rock. The model has been proved valid and reliable by comparison with experimental data.

Key words: mining subsidence, double-medium, mechanical model, probability integral method