探地雷达目的体物理模拟研究结果

GROUND PENETRATING RADAR STUDIES IN PHYSICAL ANALOGUE

通过全面、系统地对常见探测对象的物理模拟,充分展示了当地下存在这些“探测对象”时电磁波的传播规律,这一成果不仅为现场探测的异常识别和探地雷达的进一步正演工作提供了规律和依据,而且揭示了仪器的探测性能和存在的问题,从而为现场探测指出了正确的技术措施。模拟中所利用的各种金属或非金属规则形体,如柱体、球体、板状体,以及这些形体的组合体,分别代表地下实际管道、电缆、洞穴、地层和不均匀岩性界面及小构造,对于这些地下设施和洞穴、地层及构造的探测,是工程地质中所要解决的基本问题。

Some results of ground penetrating radar (GPR) studies in physical and mathematical analogue aided financially from the Committee of the National Natural Sciences Found of China are presented in this paper. In a systematic and comprehensive way, it introduces some common sight objects in physical analogue, including regular cylinder (metal and nonmetal ) , sphere, regular plate (metal and nonmetal) , and their combinations. They represent the underground pipe, cable, cavity, lithologic plane, disturbed strata or soil and small structures, respectively. These are the fundamental problems studied all-sidedly so far in the field of engineering geology, and can not only provide the pattern and the basis for anomaly discerning and calculus of proposition, but also indicate the correct step in the GPR field work.