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为解决3210大采高工作面松软厚煤层大角度仰采期间顶板控制问题,应用围岩结构观测、理论分析等方法对上覆岩层垮落破坏位移规律和特征进行分析预测,为3210仰采开采提供有效技术支撑。工程采用注浆加固材料对煤体进行加固,严格执行“降高、控顶、防片、抬底”的顶板控制措施,保证了工作面的安全开采,对类似地质条件下的大采高工作面大角度仰斜开采具有一定的参考价值。
In order to solve the roof control problem during the high angle back mining of soft and thick coal seam in 3210 large coal mining face, the law and characteristic of caving collapse and displacement of overlying strata are analyzed and predicted by the method of surrounding rock structure observation and theoretical analysis. Provide effective technical support. The project uses grouting reinforcement material to reinforce the coal body and strictly enforces the roof control measures of “lowering, controlling roof, preventing film and lifting the bottom” to ensure the safe mining of the working face. For the large mining under similar geological conditions High-angle face mining high-angle mining has a certain reference value.