高阻尼检波器在浅层地震勘探纵波反射法中的应用

在浅层地震勘探纵波反射法中,常规的动圈式检波器抗干扰能力有限,所接收的信号信噪比不高.高阻尼检波器能在信噪比等方面有很大提高,从而使我们的所采集的数据可信度更高更准.阐述了高阻尼检波器的各项性能指标及分析了其应用于浅层地震勘探纵波反射法中可行性和优越性,并介绍了一系列的实验和一个查找断裂构造带的工程实例,通过与其它类型检波器的对比分析,表明高阻尼检波器有较高的精度和信噪比,明显优于常规检波器.

THE APPLICATION OF THE HIGH DAMPING WAVE DETECTOR TO THE LONGI- TUDINAL WAVE REFLECTION METHOD IN SHALLOW SEISMIC EXPLORATION

In the longitudinal wave reflection method of shallow seismic exploration, the traditional moving coil wave detector has very limited anti-interference capacity, and hence the signal-to-noise ratio of the received signal is not high. With the high damping wave detector, the signal to noise ratio can be greatly improved, and the data acquired have higher and more accurate confidence. This paper dealt with various specifications of the high damping wave detector, analyzed the feasibility and superiority of its application to the longitudinal wave reflection method in shallow seismic exploration, described a series of relevant experiments, and gave an engineering example concerning the search for faulted zones. A comparison with other types of wave detectors shows that the high damping wave detector has higher precision and signal-to-noise ratio, and is hence obviously better than the traditional wave detectors.