Law of Surface Movement and Deformation Caused by Mining at Mountainous Field of Nanyang Coal Mine

In order to study the law of surface movement and deformation caused by mining field of Nanyang Coal Mine, the surface observation stations were arranged above 3202 and 3208 working faces, and the observation data was analyzed. The features of surface movement and deformation and dynamic movement parameters were obtained. The influence of mining slippage on buildings located at different geomorphological feature points in mountainous areas was theoretically analyzed. The results showed that the law of surface movement caused by mining at mountainous field of Nanyang Coal Mine was similar to that in plain area on the whole. Because of the change of topographic fluctuation, mining slippage had obvious influence on deformation parameters; the advance influence distance was 127 meters, and the advance influence angle was 59.6 degrees; the buildings located at the top of the mountain were less affected by mining slippage than those at the valley floor and the mountain side, which was beneficial to the protection of buildings.