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利用瑞雷面波的频散特性,在地表科学、快速、准确地测试出有效地质信息是可行的一种方法手段。本文介绍了以实测瞬态瑞雷波数据为基础,通过采用遗传算法全局非线性反演处理,对比钻探获取的地质信息,凸显了瑞雷波在工程勘察中查明地层速度、覆盖层厚度及重要地质现象(充填型溶洞、串珠状溶洞、碳质岩等)所取得的实际效果,并从瑞雷波曲线特征(频散特性、“之”字形拐点和曲率变化的位置)及反演真速度的大小等物性参数的角度出发,提出了瑞雷波分析的几个具体依据,强调了在应用瑞雷波法过程中需要重视的几个方面。
By using the dispersion characteristics of Rayleigh surface waves, it is feasible and feasible to test effective geological information quickly and accurately in surface science. In this paper, based on the measured transient Rayleigh wave data, by using the global nonlinear inversion of genetic algorithm to compare the geological information obtained by drilling, it is shown that Rayleigh wave velocity in the investigation of the formation, the thickness of the overburden And the important geological phenomena (filling type caves, beaded caves, carbonaceous rocks, etc.) obtained by the actual results obtained from the Rayleigh curve characteristics (dispersion characteristics, The speed of reality and other physical parameters of the point of view, the Rayleigh wave analysis proposed several specific basis, emphasizing the application of Rayleigh wave method in the process need to pay attention to several aspects.