Zaozhuang Mining Industry Group Mining Industry Technology Service Co.

东于煤业2302特厚煤层工作面主回撤通道发生严重变形破坏,对破坏特征进行现场监测和数值模拟研究,提出锚-梁-注综合控制技术。末采期间主回撤通道顶板变形量、两帮变形量、底鼓量降低57%、65%、45%以上,围岩变形量大幅度减小,围岩巷道稳定性较好,保障了工作面安全回撤。

The main withdrawal channel of the 2302 extra thick coal seam working face in Dongyu Coal Industry experienced severe deformation and failure. Conduct on-site monitoring and numerical simulation research on the failure characteristics, and a comprehensive control technology of anchor-beam-injection is proposed. During the final mining period, the roof deformation amount, two sides deformation amount, and the bottom heave amount of the main withdrawal channel are reduced by more than 57%, 65%, and 45%. The deformation amount of the surrounding rock is significantly reduced, and the stability of the surrounding rock roadway is good, ensuring the safe withdrawal of the working face.