Mechanical Effects of Foundation Affected by MiningInduced Surface Curvature Deformation on Building Base

Mining-induced subsidence causes ground surface movement,resulting in the mechanical effects between building base and foundation.In order to research the additional bending moment of building base influenced by mining-induced surface curvature deformation,considering the effect of building's transverse wall load on the base of its longitudinal wall,a calculation mode of reaction force of longitudinal wall's base was proposed,and calculation formula of additional force of longitudinal wall's base influenced by mining-induced surface curvature deformation was derived.The results showed that under the influence of positive or negative surface curvature deformation the contribution of transverse wall's load to the additional bending moment of longitudinal wall was different,under the positive surface curvature deformation the transverse wall′s load increase the additional bending moment of longitudinal wall′s base,but under negative surface curvature deformation the transverse wall′s load decreased the additional bending moment of longitudinal wall′s base.