【摘要】 对微震监测中拾震器阵列进行科学有效的布置是保证微震定位系统能有效运行的一个关键条件,设计了4种拾震器阵列布设方案,使煤矿中微震定位监测系统运行得更加科学有效。首先建立复杂地质模型,利用微变网格射线追踪正演模拟出微震源起震到拾震器阵列接收信号的过程,然后在施加随机扰动的情况下,利用粒子群-神经网络算法(PSO-BP)反演推算出震源位置,最后通过震源位置的误差来分析各个布阵方案的特点,同时分析了阵列中拾震器数量的合理值。研究结果表明,在微震监测系统中拾震器利用率最高的情况下,可以给出准确、合理、有效的拾震器布阵方案。更多还原

【Abstract】 Scientific and effective geophone array method is the key condition in micro-seismic monitoring system. Four kinds of geophone array method were designed to make the micro-seismic monitoring system in coal mine running more scientific and effective. First sophisticated geological model was built, and the process of signal transmission from the micro source of shock to the geophones was simulated using micro grid ray tracing method. Then in condition of random disturbance, source location was obtained using particle swarm and neural network algorithm( PSO-BP). Finally the characteristics of the every array method were analyzed according to the error of the source location and the number of geophone was also analyzed. According to the results, accuracy, reasonable and effective geophone array method was given under high efficiency in the micro-seismic monitoring system.更多还原