Study on Surface Ground Movement Deformation Law Above High Cutting Long Coal Mining Face
Abstract：In order to study the surface ground movement deformation law above the high cutting long coal mining face, the numerical simulation, theoretical analysis and site measuring method were applied to analyze the length variation of the high cutting long coal mining face affected to the surface ground movement deformation law. The critical conditions of the stability lost occurred when the pressure bal- anced arch of the overburden strata in the coal mining face reached a limit status and the parameters of the surface ground movement de- formation features were obtained. The study results showed that with the length of the coal mining face expanded, in the inclined direction of the coal mining face, the separated bedding in the overburden strata would cause the height scope of the falling zone, surface ground movement deformation value and mining influence scope steadily increased. The max subsidence value and the max horizontal moving value of the surface ground would be in a liner relationship to the mining length of the coal mining face.
Keywords：high cuttinglength of coal mining facesurface ground movement deformationfalling zone heightseparated bedding in overburden strata
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 35-37,49 )