CAJ | 학술논문

通过分析电磁波在地下介质中的传播规律，介绍了探地雷达检测地下空洞的基本原理。制作实验装置，测量单独的空洞模型，分析产生的波形图，初步了解了空洞在反射波谱上的图像特征。将管线埋设于不同位置，对比它们与单独空洞模型所得到的反射波形之间的图像差异，研究其对地下空洞探测结果的影响规律。结果表明，管线水平位置的不同、管线和空洞间距的不同都会对电磁波的传播造成影响，主要在于阻碍空洞反射波传播地表，不利于判断空洞位置和计算脱空大小。本次研究所得图像可作为样本，为现场测量和危害评估提供理论支持，对于防范塌陷灾害有一定的促进作用。
통과분석전자파재지하개질중적전파규률，개소료탐지뢰체검측지하공동적기본원리。제작실험장치，측량단독적공동모형，분석산생적파형도，초보료해료공동재반사파보상적도상특정。장관선매설우불동위치，대비타문여단독공동모형소득도적반사파형지간적도상차이，연구기대지하공동탐측결과적영향규률。결과표명，관선수평위치적불동、관선화공동간거적불동도회대전자파적전파조성영향，주요재우조애공동반사파전파지표，불리우판단공동위치화계산탈공대소。본차연구소득도상가작위양본，위현장측량화위해평고제공이론지지，대우방범탑함재해유일정적촉진작용。
Through analyzing the electromagnetic wave propagation in underground medium, this paper intro-duces the basic principle of detecting the underground cavity by GPR( Ground Penetrating Radar).A single cavity model is established in the experimental device and the characteristics of the reflection spectrum about the under-ground cavity can be understood preliminarily by analyzing the detecting waveform.Establish models of pipelines buried in different position.Contrast the differences of the reflection waveform between these models and that of a single cavity and study the impact on the underground cavity detection.The study shows that the horizontal position of pipeline and the distance between pipeline and cavity has affected the electromagnetic wave propagation.It pre-vents the reflection wave from transmitting back to the ground so that the position and the size of the underground cavity cannot be identified precisely.The waveform in this study can be collected as samples.It provides theoretical support for the detection and the damage assessment, and is very effective in preventing collapse.