%0 Journal Article
%T 电磁波CT技术在工程地质勘察中的应用<br>Application of Electromagnetic Wave CT Technology in Engineering Geological Survey
%A 张超
%A 刘伟
%A 褚金桥
%A 胡焕忠
%J Geomatics Science and Technology
%P 47-53
%@ 2329-7239
%D 2020
%I Hans Publishing
%R 10.12677/GST.2020.82006
%X 在桥梁工程设计施工中，岩溶、空洞等不良地质体对工程影响重大，因此需探明桥基附近区域持力层深度范围内的地质情况。本文以武汉至深圳高速公路嘉鱼至通城段某大桥为例，简要介绍了电磁波CT的基本原理、工作方法及其桩基工程中的应用。通过电磁波CT反演计算技术，重建了两孔之间地下介质相对吸收系数的分布图像，通过该图像能直观反映出地下不良地质体的分布特征，通过后期钻孔验证证明电磁波CT法在岩溶勘察方面是有效的、可行的。<br />
In bridge engineering design and construction, karst, cavity and other bad geological bodies have a great impact on the project, so it is necessary to explore the geological conditions within the depth of the regional bearing stratum near the bridge foundation. This paper takes a bridge in Jiayu-Tongcheng section of Wuhan-Shenzhen expressway as an example, briefly introduces the basic principle, working method of electromagnetic wave CT and its application in pile foundation engineering. The distribution image of relative absorption coefficient of underground medium between two holes is reconstructed by electromagnetic wave CT inversion calculation technology. The image can directly reflect the distribution characteristics of underground bad geological bodies. The later borehole verification proves that electromagnetic wave CT method is effective and feasible in Karst exploration.
%K 桥基，电磁波CT，相对吸收系数，岩溶，空洞<br>Abutment
%K Electromagnetic Wave CT
%K Relative Absorption Coefficient
%K Karst
%K Cavity
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=34805