运用角位移对底板稳定性监控方法研究

Monitoring method for stability of working face floor

工作面底板失稳是由于采动活动影响,由此而引起了一些突水性灾难事故。现有技术水平和理论尚难以准确预测。从理论上运用角位移方法监控工作面底板稳定性的原理和可行性,为现场监控工作做理论基础。结合淄矿集团埠村煤矿西区工作面突水实例,利用理论分析和数值模拟,对工作面底板的稳定性提出角位移临界值。

The loss of stability is caused by the influence of mining, which usually induces some water-bursting accidents. This issue is hardly to be predicted accurately based on the current technical level and theory. In this paper, a theoretical method of monitoring the working face floor stability by angular displacement is used to provide a theoretical basis for the on-site monitoring. By combining the example of water-bursting crisis in the Western District of Bu Village Coal Mine of Zibo Mining Group, this paper comes up with a critical value of angular displacement for the working face floor stability.