Energy transfer theory and application research of accumulation energy district on coal and rock mass

Using research results on physical properties of primary coal and rock mass, in this paper, response characteristic function y（t）, amplitude frequency characteristic H（ω） and phase-frequency characteristic φ（ω） were used to describe dynamic response of stress impulse signal. At the same time, with the help of computer simulation analogue technique, applying these characteristic parameters to research the rock-burst forecasting, this paper deduced response characteristic function model. This function model is valuable for rockburst tendency test. According to these researches, develops monitoring recording system to acquire rockburst precursor signals. This system can monitor stress impulse signal dynamically and continuously. By applying the forecast information systems can forecast rockburst successfully.

工作面强矿震事件的震动波CT时空预测技术

以某矿3307工作面回采期间的微震监测为基础,统计分析微震事件的震源能量和震动频次,并结合震动波CT技术动态预测强矿震事件。研究结果表明:利用震动波CT技术,反演得出煤层和顶底板切片波速异常系数An和波速梯度变化系数VG等值线云图,确定高波速正异常和高波速梯度异常区域,可从空间上划分出强冲击危险区域;分析微震事件的时间分布表,探讨每日震动总能量/频次与强矿震事件的耦合规律,结合波速异常系数An和波速梯度变化系数VG等值线云图,可从时间上确定冲击危险期;对比现场实测数据,在空间上和时间上均验证了预测结果的有效性。