特厚煤层充填开采对地表村庄的影响研究

Study on the influence of the extra thick coal seam filling mining on the surface village

随着煤炭资源的不断开发,"三下"(建筑物下、水体下、道路下)压煤问题越来越突出,充填采煤法成为"三下"压煤开采的有效方法。基于公格营子矿特厚煤层似膏体充填开采实践,通过充填开采地表沉陷实际观测和地表移动变形的预计分析,结合地表建筑的受损等级标准,就充填开采对地表村庄的影响进行了研究。结果表明,似膏体巷式充填开采控制地表下沉的效果良好,地表沉陷下沉系数为3.5%。特厚煤层全部充填开采后,村庄范围地表移动变形不明显,将不会影响村庄范围内的建筑物正常使用。

With the continuous development of coal resources, the problems of coal resources under buildings, water bodies and roads are becoming more and more prominent, filling mining methods have become an effective method. Based on the application practice of extra thick coal seam mining with paste-like filling in Gonggeyingzi coal mine, through actual observation of filling mining surface subsidence and prediction and analysis of ground movement and deformation, combined with ground buildings damaged grade standard, filling mining impact on surface village were studied. The results show that the effect of the control of surface subsidence is good, and the subsidence coefficient is 3.5%. After the extra thick coal seam mining, the village＇s surface movement and deformation is not obvious, and will not affect the normal use of the building.