物探技术在海域抛石体厚度探测中的应用效果分析

Analysis on application effect of geophysical prospecting technique in detection of thickness of offshore riprap body

在土体波速及电阻率值均呈递减的条件下,如何对各层位进行较准确划分,一直是工程物探的难题。结合上海洋山港工程,通过现场试验,分析了五种物探方法在海域抛石体厚度探测中的适用情况,介绍了瞬态瑞雷波技术和高密度电法技术的探测原理,分析了这两种方法在抛石体厚度探测中的应用效果。

How to more accurately divide all the strata under the condition of step by step declines of the wave velocity and the electrical resistivity in soil body is all along a problem in the geophysical prospection.Compared with the construction of Yang-shan Port Project in Shanghai,the applications of five geophysical prospecting methods in the detection of the thickness of offshore riprap body are analyzed herein,and then the prospecting principles of both the transient Raleigh wave technology and the high density resistivity method are described,while the application effects of both of them for detecting the thickness of the riprap body are analyzed as well.