横波反射法在研究上海东西部硬土层过渡变化中的应用

Application of SH wave reflection method in researching the transitional change of hardpan in the eastern and western Shanghai

上海地区用横波反射法对浅部(80m以浅)地层分层,特别是追踪硬土层的横向变化非常有效。这在上海三维城市地质调查项目中得到了很好的体现,横波反射法获得了东、西部硬土层间的过渡关系。文中针对这一工程案例进行了细致分析,客观评价了该方法的有效性和应用前景。

In the Shanghai 3D urban geological survey, SH wave reflection method was proven available in subdividing the stratigraphic sequence with buried depth 〈 80 m, especially in tracing the spacial change of the local hardpan. Relying on this method, the transitional relationship of the hardpan distributed respectively in the western and eastern Shanghai was determined. In this paper, we analyzed the particular engineering - oriented case and evaluated the validity and employing prospect of this method..