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应用电磁波波速和衰减层析成像技术研究了地下深部灰岩裂隙溶洞发育、破坏程度等岩层特性．介绍了钻孔地质雷达跨孔层析成像的基本原理、野外测量方法、资料处理过程等，阐述了跨孔层析成像用于岩层特性研究的理论基础．在研究实例的波速和衰减层析图像上，波速和衰减分布整体规律基本一致，但不完全相同，可以区分出裂隙和溶洞发育、地下水运移良好通道的高衰减低速区，岩层完好的低衰减高速区，也存在岩层情况较为复杂的低衰减低速区．研究结果表明：电磁波联合波速和衰减层析成像技术适用于岩层特性研究．
The characteristics of rock formations, such as the development and destruction of fractured cave limestone in deep underground limestone, were studied using electromagnetic wave velocity and attenuation tomography. This paper introduces the basic principles, field measurement methods and data processing of cross-bore tomography of borehole GPR, and expounds the theoretical basis of cross-bore tomography for study of rock properties. In the wave velocity and attenuation tomography images of the research examples, the general laws of wave velocity and attenuation distribution are basically the same, but not completely the same, and can distinguish the development of fractures and caves, high attenuation and low velocity zones with good groundwater transport channels, intact low attenuation High-speed area, there are also more complex low-attenuation rock area. The results show that the combination of electromagnetic wave velocity and attenuation tomography is suitable for the study of rock properties.