基于微震监测的大采高综采面覆岩破断特征研究

Surrounding Rock Broken Characteristic of Large-mining-height Full-mechanized Mining Face Based on Micro-seismic Monitoring

为了合理确定大采高综采工作面覆岩"两带"高度,采用微震监测技术探测顶板覆岩破断特征,从走向和倾向两个方面来分析微震事件分布规律,从而确定了大采高综采面"两带"的高度:垮落带高度约20m,裂缝带高度约45m。研究认为基于微震监测的大采高综采面覆岩"两带"探测方法可行,很好地解决了覆岩破坏实测难题。

In order to rationally determine “two-zone” height of large-mining-height full-mechanized mining face , applying micro-seismic monitoring technology to detecting roof broken characteristic , “two-zone” height was determined on the basis of micro-seismic matters distribution rule.Caving zone height was about 20m and fissure zone height was about 45m.It was proved that micro-seismic mo-nitoring is feasible for detecting “two-zone” height and well settled the difficult problem of measuring overlying strata failure .