探地雷达法在调查地下空洞中的应用研究

Study on Application of Ground Penetrating Radar Method in Survey of Underground Cavity

探地雷达是利用介质间的电导率、介电常数等电性差异分界面对高频电磁波(主频为数十兆赫至数百兆赫)的反射来探测地下目标的。地下空洞探查一直是工程界的难点,如何进行高效、大面积、非破损的探查,是许多单位都一直在努力加以解决的问题。随着电子技术的发展,探地雷达作为一种应用范围广、稳定性高的仪器,逐渐得到重视,它的应用领域的拓展,也是各引进该仪器的单位一直在努力的方向。针对高水位地区的介质场,如果能研究出一种比较可靠,能够大面积普查的空洞调查技术,将会对提高核心竞争力和扩大市场份额起到积极的作用。

The ground penetrating radar is to use the electrical difference interface of electrical conductivities and dielectric constants among the mediums to detect the underground objectives for the reflection of high-frequency electromagnetic wave(frequency of tens of MHz to hundreds of MHz). The detection of underground cavity is always difficult in the engineering field. How to carry out the high-effective, large-area and non-damaged exploration is the problem many units always make great efforts to solve. With the development of electronic technique, the ground penetrating radar as a wide application range and high stability of instrument is gradually paid attention. Its expansion of application field is also the orientation the units introducing this kind of instrument make great efforts. Aiming at the high water level area of medium field, a more reliable cavity survey technology able to widely and generally survey can be studied and will play the positive role to improve the core competitiveness and extend the market shares.