Study On The Strip Mining Methods Under Buildings In Xue Miaotan Coal Mine

Strip mining mining as the "three under" mining one of main methods, In our coal mine area has been widely used. Yushen coal mine areas of Xue miaotan coal mining surface have plenty of private housings, factories, mine has get through 4 high-tension transmission line, a national highway, a riverand communication lines and other surface protection building. The shallow coal seam mining, the thick alluvium and thin bedrock, thick coal seam mining. Study this condition for the reasonable safety mining methods is of important significance of sustainable development of mining area.Based on the analysis of regional geology, mining and ground protection, Combined with the combination of mine production and technological conditions, determine the use of strip mining methods to protect the mine complex ground construction (structures). By analysis of Xue miaotan mining's conditions of thick alluvium and thin bedrock, Application A.H.Wilson coal pillar strength theory, numerical simulation FLAC3D and similarmaterials simulation, determine the strip mining plan to retain the supportpillar of sufficient strength and long-term stability, after mining overburden does not cause damage under the surface waves sink led to the surface building(structure) of the buildings damaged. The results show that this comprehensive analysis, with higher reliability, Xue miaotan mining existing production technology protected ground under the building (structure) of the effective methods.