地震横波勘探及其在浅层岩土分层中的应用

简单论述了横波的基本特点,指出在松散层勘探中,横波勘探的优势主要在于探测精度高且不受饱水度的影响.因此,可以选择地震横波勘探进行第四纪松散层层序划分及厚度探测.并以广州市城市地质调查项目为例,介绍了地震横波勘探在浅层地层勘测中的数据采集方法,分析了地质解释依据,并结合波速测井方法对地层层面进行了划分.分析结果表明了多数岩土层与反射界面有较好的对应关系,用地震横波勘探结合波速测井进行第四纪松散层层序划分及厚度探测是可行的.

Application of seismic shear wave detection in dividing shallow strata of rock and soil

This paper discusses basic characteristic of transverse wave and indicates that shear wave detection,which has high exploration precision and is not influenced by the degree of saturation,has advantage in unconsolidated strata as well as thickness detection.Therefore,seismic shear wave detection can be used to divide Quaternary unconsolidated strata.Based on the case of urban geologic survey in Guangzhou,the paper introduces data collection method used in shallow exploration in process of seismic transverse wave detection,and analyses the geologic explanation for results as well as divides the strata in this way coupled with method of well logging.The analysis shows that most of rock-soil strata have good corresponding relation to reflecting surface,and that seismic shear wave exploration method combined with well logging is feasible to divide Quaternary unconsolidated strata.