利用多回路钻孔注 (放 )水连续探测系统 ,结合断裂力学分析 ,研究了大采深倾斜薄煤层底板采动破坏特征与形态 ,结果表明底板破坏形态为一匙形 ,与厚煤层开采所形成的破坏形态相比其破坏特征的差异在于 ,底板采动裂隙主要是原生节理裂隙的扩展 ,而工作面推过压实后 ,绝大部分裂隙又趋于闭合 The multi-loop drilling continuous injection system was used to investigate the characteristics and morphology of mining failure in thin mining seam with large mining depth and fracture. The results showed that the failure mode of the bottom plate was a spoon shape, which was similar to that of the thick coal seam mining The difference between the failure modes formed and their failure characteristics lies in that the mining floor of the floor is mainly the expansion of the primary joint fissures, and most of the fissures tend to close after the working surface is pushed and compacted