巨厚煤层的冲击地压防治研究

Based on study of extremely thick coal seam with coal bumping tendency in Qianqiu Coal Mine, the characters and influence factors of coal bumping are recognized. Also the suitable forecasting measures, preventing measures, examining methods for preventing measures’ effectiveness and crashing measures that can be put into effect once above measures all failed. So the safe system of extremely thick coal seam is built and the extremely thick coal seam with coal bumping tendency in Qianqiu Coal Mine is extracted smoothly with fully mechanized sub-level caving mining technology.