连续表面波测试系统在地质勘察中的应用

Application of the Continuous Surface Wave Testing System in Geological Exploration

连续表面波测试系统是利用稳态面波法进行勘探的一种新型设备。同其它的物探方法相比,稳态面波法具有连续扫频、抗干扰能力强、测试精度较高等特点。该方法能较快速地测试岩土体的面波速度并转化为横波速度,进一步提供岩土体的各项动力学参数,如压缩模量,剪切模量等,为岩土体的层位划分及分类提供较为准确的基础资料。在武广客运专线路基软土勘察中,利用该方法基本查明了软土及松软土的分布范围,取得了较好的勘察效果。

The continuous surface wave testing system is a new exploration device of using steady surface wave. Compared with other geophysical prospecting methods,steady surface wave has some features such as continuous frequency scanning,strong ability of anti-interference,high test accuracy. It can relatively quickly obtain rock-soil body's velocity of surface wave and convert to velocity of shear wave. Further,it can provide rock-soil body's dynamic parameters such as compression modulus,shear modulus and so on. Thus it can provide a relatively precise base data for layer divisions and sorts of rock-soil body. With the method,we basically detect the range of soft soil and loose soft soil during the survey of subgrade soft soil in Wuhan-Guangzhou Passenger Dedicated Line,which achieves good survey results.