地学层析成像（CT）新技术，涉及到物理学、地球科学、计算机技术及工程技术基础学科，其基本原理是通过钻孔之间的电磁波发射与接收器扫描观测接收，利用电磁波在不同介质（岩土）中吸收性质的差异特性，经过物理数学模型处理，由计算机运算、重建图像及彩色显示，直观、准确地揭示出地下岩土层二维或三维断面结构、构造及岩性差异特征，并概括岩上对电磁波吸收参数，结合工程地质解释，提出科学的探测成果．福建省莆田东方红水库和漳平大坂水库引进应用该技术，准确地探测出大坝渗漏水部位和特征，解决了多年来用传统的探测手段无法探清的渗漏水原因和部位问题，为大坝渗漏水处理提供了可靠的科学的基础资料． Geological tomography (CT) new technology, involving physics, earth science, computer technology and engineering technology basic disciplines, the basic principle is through the borehole between the electromagnetic emission and receiver scanning observation of the reception, the use of electromagnetic waves in different media (Geotechnical) characteristics of the absorption properties of the underground rock through the physical mathematical model processing, computing, reconstruction of images and color display, intuitively and accurately reveal the underground rock layer 2D or 3D cross-section structure, structure and lithology differences , And summarizes the rock on the electromagnetic wave absorption parameters, combined with the interpretation of engineering geology, put forward scientific exploration results. The introduction and application of this technology in Pu Dong Dongfanghong Reservoir and Zhangping Osaka Reservoir in Fujian Province accurately detected the seepage water location and characteristics of the dam and solved the cause and location of the seepage water that could not be found by traditional detection methods for many years. For the dam seepage water treatment provides a reliable and scientific basis of information.