声波测井技术在场地勘察及地震安评中的应用

Application of the velocity logging in site survey and seismic safety evaluation

声波测井属于地震勘探,也是原位测试技术,依据激发接收装置的不同分类也不同,目前广泛使用的是单孔检层法。这里对声波测井技术原理进行了详细说明,震源设置、测试方法和资料处理也较为详细地介绍说明,通过锤击的方式可以获取反相的剪切波记录,利用初至的时间差异,可以求取每层的剪切波速,进而获取等效剪切波速,为场地类别划分、动力学参数和卓越周期的求取提供数据,并通过实例进行了实际应用,该方法有待于进一步完善和发展。

The velocity logging belongs to seismic exploration,but also in-situ testing techniques.The layer-detect method log-ging is now widely used,basing on different transmitting and receiving devices with different classification.The inverted shear wave can be record by way of hammering.The shear wave velocity of each layer can be obtained using the time difference of the first arrivals,and then the equivalent shear wave velocity can resolved,which is used for site classification,kinetic parameters and excellent period.the application of the method needs further improvement and development.