大采高浅埋煤层开采地表移动变形特征研究

Study on Surface Movement and Deformation Features of Underground Mining in Shallow Seam with High Cutting Height

大采高浅埋煤层开采地表移动变形具有一定的特殊性,文章在对韩家湾煤矿2304工作面开采地表移动观测的基础上,确定了韩家湾煤矿开采岩层移动参数,分析了影响采空区地表裂缝形成的主要因素,给出了厚松散层浅埋煤层开采地表移动变形破坏规律,为今后矿井"三下"开采以及保护煤柱的安全合理留设提供科学依据。

The surface movement and deformation of underground coal mining in a shallow seam with a high cutting height would have a certain speciality. Base on the surface movement observation of No. 2304 coal face mining in Hanjiawan Mine, the rock strata movement parameters in the coal mining of Hanjiawan Mine was determined. The main factors affected to the surface fracturing above the goaf were analyzed. The surface movement and deformation failure law above the coal mining in shallow seam and thick loose overburden was provided and could provide scientific basis for the late coal mining under the buildings, railway and water body and for the safety and rational coal pillar left in underground mine