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一、序言在工程地质勘察中,对研究地基动力性质方面,弹性波速是不可缺少的资料。尤其s波与地基许多特性关系密切,因此,S波测定日益受到极大的重视。用敲板震源发振,在垂直板的长轴测线及钻孔中,能得到很强烈的S波,根据S波的定向极化性,在记录中能可靠的辨认出S波,进而求出S波速度。用敲板法震源发振进行S波测定,方法简便,记录可靠,因而得到广泛应用。国内外对敲板法S波震源进行大量的理论研究,
I. INTRODUCTION In engineering geological surveys, the elastic wave velocity is indispensable for studying the dynamic nature of the foundation. In particular, the s-wave is closely related to many properties of the foundation. Therefore, the S-wave measurement has received increasing attention. With the knocking source, the strong S wave can be obtained in the long axis line and drill hole of the vertical plate. According to the directional polarization of the S wave, the S wave can be reliably identified in the recording, and then the S wave can be identified. S wave speed. The method of measuring the S wave by using the method of knocking the source of vibration is simple, reliable, and widely used. A large number of theoretical studies have been conducted at home and abroad on the S-wave source of the tapping method.