Study On Surface Movement And Deformation Of Ningtiaota Coal Mine Shallow Buried Coal Seams In Loess Gully Region

Coal resource is one of the most important basic energy sources in our country at present.The problem of overburden rock and surface movement and deformation during mining has caused serious damage to the local ecological environment.Especially for the surface movement and deformation caused by the mining process of close-range shallow seam group,the damage is more serious.Surface movement and deformation caused by oblique overlapping mining of close distance shallow seam group is one of the foundations of environmental control in loess gully area of northern Shanxi.In this paper,taking Ningtiaota Coal Mine of the close distance shallow seam group with oblique overlapping face as the research object,the basic geological data and the physical and mechanical characteristics of the overlying strata of the coal mine are obtained by field measurement,and the problem of surface movement and deformation in the mining process is analyzed by means of similar material test and numerical simulation.On the basis of this analysis,the surface movement and deformation law during the oblique overlapping mining process of the shallow seam group in the close distance of the Ningtiaota Coal Mine is obtained.This paper studies the surface movement and deformation caused by the mining process of the shallow seam group in the near distance of the Ningtiaota Coal Mine,and gives the law of the surface movement and deformation of the shallow seam group in the near distance,which provides a certain scientific basis for the green mining of the coal seam,the control of the surface environment and the sustainable development of the mining area under similar geological conditions.