电磁波井间CT成象技术及其在岩土工程中的应用  

THE BASIC PRINCIPLE OF CROSSHOLE ELECTROMAGNETIC TOMOGRAPHY AND ITS APPLICATION TO CIOIL ENGINEERING

作　　者：邱陶兴[1] 王洪涛[1] 陶裕录[1] 

机构地区：[1]福建省地震局,国家地震局地球物理研究所

出　　处：《华南地震》1994年第3期16-23,共8页South China Journal of Seismology

摘　　要：简要叙述了电磁波ＣＴ成象技术的基本原理、工作方法及其在岩土工程中诸如机场跑道、隧道工程和高层建筑地基评价中的应用。通过井下激发和观测电磁波能量的衰减，利用ＣＴ技术重建了地下介质在观测平面内相对吸收系数的二维分布图象，这些图象直观准确地反映出地下介质的构造形态、地层界面、风化壳以及破碎带的分布特征，在岩土工程探测中发挥了重要作用。Ih this paper, the main principle of electromagnetic tomography has been described briefly, its observational method and application to cioil engineering such as plane runway. tunnel engineering and site foundation of high bineing have. also been introduced Through cross-borehole arousing electromagnitic wave and observing its energy decay, 2D distribution hages of the relative absorption coefficient in the medium can be reconstructed by CT trchnology. On the geotomography, the distribution of some inteifaces, rock layer, weathered layers and flactured bodies can be located directly, which is very useful in Grotechnical Engineering.

关 键 词：电磁波 CT成象技术 岩土工程 二维图象 

分 类 号：TU198.6[建筑科学—建筑理论]