The Acoustic Emission Experiment System of Rock Outburst in Water Inrush
The Acoustic Emission Experiment System of Rock Outburst in Water Inrush
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发表时间：
2010
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通讯作者：
He Xin-min
中科院分区：
文献类型：
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作者：
He Xin-min
For the sake of monitoring the water inrush in coal mine,according to the existing difference in acoustic emission(AE) signals spectrum of coal rock outburst under different stress rates and water content,we study and design a real-time online monitoring system to monitor mine water inrush by using the field programmable gate array(FPGA) and low consumption microprocessor MSP 430.In addition,on the basis of the characteristics of AE signals in coal rock outburst,decomposition,de-noising and reconstruction for the AE signals are carried out through wavelet packet transform for solving the noise reduction and other problems in AE signal processing.The de-noised AE signals show that the variation characteristics can be clearly reflected in coal rock outburst under different situations.The research method is confirmed to achieve desired results by simulation samples.
