微震信号现场监测试验及特征研究

Experiment Study on Micro-seismic Signal of Field Monitoring

为研究煤岩破裂微震信号的特征,利用微震监测系统对井下煤岩进行微震信号的监测试验,分析了煤岩破裂微震信号的变化规律。试验结果表明:微震信号的变化趋势与煤岩发生破裂的强弱基本呈正相关。微震信号强度强,煤岩发生破裂伴随着较大能量,之后随着时间的增长,能量逐渐减小,微震信号也明显减弱,直到最后传感器监测不到信号。

In order to study micro coal mine micro -seismic signals - seismic signal characteristics of coal rock burst. Monitoring test of was detected by using micro -seismic monitoring system, and anal- ysis of the micro - seismic signal the regularity of coal rock burst were carried out. The test results show that the change trend micro - seismic signals correspond excellently with the strength of coal rock burst, the basic was positively correlated. Micro -seismic signal intensity, coal and rock rupture ac- companied by greater energy gradually decreased with the time increasing, micro -seismic signal also decreased significantly, finally the rear sensor not detected signal.