不同充填率下煤层顶板应力分布特征研究

Distribution Features of Coal Roof Stress at Different Filling Rates

以阳城煤矿7302工作面为地质背景,研究在不同充填率的情况下,煤层顶板应力分布特征,采用的充填材料为膏体充填,利用FLAC3D数值仿真软件,模拟充填率分别为60%、70%、80%和90%时煤层采动顶板垂直应力的分布特征,为研究深部煤层顶板采动破坏变形提供一定的理论依据。

Taking No. 7302 working face in Yangcheng Mine as geological background, the distribution of coal roof stress at different filling rates was studied. Paste filling was adopted. FLAC^3D numerical simulation software was used to simulate the vertical stress distribution of roof caused by mining at the different filling rates （60%, 70%, 80%, and 90%）. The study could provide the theoretical evidence for the damage and deformation of the coal roof caused by