Abstract：The maximum subsidence induced by mining bedding ore(such as coal seam) is an important parameter for estimating the degree of surface movement and deformation. The relations are dealt with between ground maximum subsidence and geometric factors of extraction. A seam-dip-angle-based model of maximum subsidence is established to reflect the comprehensive influence of geometric and mining factors，as well as the effects of bedding structure and extraction size. The research results have laid a foundation for the construction of unified subsidence model suited for the whole range of seam dip angle.
