影响瞬态瑞雷波勘探精度的因素探讨

瞬态瑞雷波勘探作为一种无损检测手段已广泛应用于岩土工程勘查、监测、检测等领域。为了能采集到最为有效的数据记录,得到较好的测试效果,最佳采集参数的选择是关键。介绍了瑞雷波勘探的原理和F-K域分析法的计算过程,分析了各参数对瑞雷波相速度计算的影响,通过实验数据分析了影响瑞雷波勘探的主要因素,就如何选择最佳采样率、道间距、偏移距、震源以及检波器等提出了几点建议。

Research on the Factors Affecting the Precision of Transient Rayleigh Wave Exploration

As a detection method without damages,the transient Rayleigh wave exploration has been widely used in engineering investigation,monitoring,detecting and so on.The selection of optimal gathering parameters is the key to gather most effective data record and achieve better measuring result.The paper introduces the principle of transient Rayleigh wave exploration and the calculating process of F-K region analysis,according to experimental data analyzes the influences of the parameters on the calculation of phase speed of Rayleigh wave and the various factors affecting transient state Rayleigh wave exploration,at last,gives some advices on how to choose the best sampling rate,group interval,offset,vibrating source and receiver.