Abstract：In order to study the influence of underground mining on surface subsidence in Yangdong Mine, the surface subsidence caused by mining in No.06201 Face was studied by means of theoretical analysis and numerical simulation. The results showed that the maximum subsidence value of surface was 1.74 m and the maximum horizontal displacement value was 0.537 m by two methods. Through numerical simulation, it was concluded that the overlying rock migration and stress cloud map were symmetrically distributed along the middle of the goaf during the mining process, and the maximum displacement of the roof was about 2 m. There were stress concentration areas on both sides of the coal wall, and the maximum stress value reached nearly 34 MPa. The surface center displacement corresponding to the middle of the goaf was the largest, and the maximum horizontal displacement occurs at the model length of 147 m. It was observed that the land subsidence and horizontal displacement of Yangdong Mine were within the expected range, and the effective prediction of surface subsidence could ensure the normal mining.
