Numerical Analysis of Scheme Optimization Design for Coal Mining Under Village

In order to improve the coal mining rate and reduce the impact of mining on ground buildings and railway, to prevent possible potential safety hazard during the mining period, based on the geology and mining conditions of Jiulong Mine, we proposed 3 mining schemes, and used FLAC^3D simulation software to estimate the displacement of each scheme, and analyzed the influence of the buildings and the railway line, choosed the best reasonable mining scheme. The practical results showed that the scheme 2 was reasonable, and the safety was more secured, and the comprehensive influence degree of surface movement and deformation on mining-induced damage of the structure was small.