基于虚拟仪器的微震实时监测系统

Real-time Microseismic Monitoring System Based on Virtual Instruments

煤矿中发生的岩爆、煤和瓦斯突出等地质灾害与岩体中的微震现象有着必然的联系,通过监测地下微震信号可以确定地下岩石破裂的范围和程度,为矿山的地下安全监测提供有力的证据。以往基于DSP或其他单片机的微震系统,其资源的有限性很难达到理想的采集效果,并且难以完成先进算法的实现;而本系统实现了对多路微震信号采集及先进的小波变换处理算法,充分发挥了虚拟仪器的优势。该系统的监测结果与实际矿震十分吻合,得到的定位结果小于规定的误差上限,很好地完成了对微震的实时监测及分析。

Many geologic hazards, such as rock burst, extrusive coal and gas, have an inevitable connection with mieroseismic in rock mass. Inspection on underground microseismic signal is a good way to determine the range and level of underground rock breaking to provide a powerful evidence for underground safety monitoring. Previous mieroseismic systems based on DSP or single chip cant reach the desired data collection due to its limitation, neither realize the advanced algorithm. The real-time microseismic monitoring system realizes the acquisition of multiple microseismic signals and the wavelet transform algorithm, which gives full scope to the advantages of virtual instruments. The monitoring result is much similar to actual rock burst and the error of location was minor to the defined upper limit, which means that the new system effectively completes the real-time monitoring and analysis on microseismic.