摘要
为了减小带式输送机对矿井瞬变电磁法探测造成的干扰影响,采用数值模拟与现场试验分析了带式输送机对矿井瞬变电磁法探测的响应特征,探讨采用多项式拟合校正函数进行干扰压制的处理方法。研究表明:带式输送机的干扰对二次场的前、中期的影响大于后期,并存在一定的时移;非干扰数据与干扰数据的比值与采集时间存在一定关系,采用校正函数可有效地剔除带式输送机形成的假异常,大大提高了矿井瞬变电磁法的探测效果。
To reduce the interference effect of belt conveyor on mine transient electromagnetic detection, numerical simulation and field test are used to analyze the response characteristics of belt conveyor to mine transient electromagnetic detection, and the processing method of interference suppression using polynomial fitting correction function is discussed. The results show that the interference of the belt conveyor on the secondary field is greater in the early and middle stages than in the later stages, and there is a certain time shift. The ratio of non-interference data to interference data has a certain relationship with the acquisition time.The correction function can effectively eliminate the false anomalies caused by the belt conveyor and greatly improve the detection effect of the mine transient electromagnetic method.
引文
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