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为了提高TSP现场信号采集的信噪比和预报准确度,通过现场试验、结论对比分析和理论分析的方法,对影响TSP信号采集质量的主要因素进行了研究,探讨了断层破碎带、瑞雷波和接收探杆的锚固耦合等影响因素对信号采集的影响方式.首次采用了单道信号分析的方法,对比分析了接收探杆的不同耦合方式和锚固强度对信号接收的干扰特点,并研究了减弱或消除干扰的接收探杆耦合方法.通过对瑞雷波的理论研究,分析了瑞雷波对信号采集的干扰原理,得出了增加接收探杆的锚固深度可显著减弱瑞雷波干扰的结论.
In order to improve signal-to-noise ratio (SNR) and forecast accuracy of TSP field signal acquisition, the main factors influencing TSP signal acquisition quality are studied through field experiments and conclusions of comparative analysis and theoretical analysis. The effects of fault fracture zone, And the influence of anchoring coupling of receiving probe on signal acquisition, etc. The method of single-channel signal analysis was adopted for the first time, and the characteristics of different coupling modes and anchoring strength of receiving probe were compared and analyzed. Reduce or eliminate the interference of the receiving probe coupling method.Analyzing the Rayleigh wave theory, analysis of Rayleigh wave signal acquisition of the interference principle, drawn to increase the receiving probe anchorage depth can significantly reduce the Rayleigh wave interference in conclusion.