采煤工作面顶板岩性对底板破坏影响的分析研究

Analysis and Research on the Influence of Roof Lithology in Coal Mining Faces on Floor Failure

摘要: 以淮南地区某采煤工作面为例。在恒定底板岩性的基础上，基于FLAC^3D数值模拟软件，通过构建出不同岩性组合的顶板采动破坏模型，对煤层开采过程中的底板破坏发育特征进行研究，以分析顶板岩性对底板破坏深度的影响。结果表明：采煤工作面底板破坏深度受顶板岩性的影响且随着顶板坚硬程度的提升，底板最大破坏深度也随之提高。

Abstract: Taking a coal mining face in the Huainan area as an example. Based on the constant floor lithology and using the FLAC^3D numerical simulation software, by constructing roof mining failure models with different lithology combinations, the development characteristics of floor failure during the coal seam mining process were studied to analyze the influence of roof lithology on the floor failure depth. The results show that the failure depth of the floor of the coal mining face is affected by the lithology of the roof, and as the hardness of the roof increases, the maximum failure depth of the floor also increases accordingly.