摘要
利用探地雷达技术原理,选用AB-50 MHz非屏蔽蛇形天线、AB-150 MHz和AB-250 MHz屏蔽天线,对220 kV输电线路塔基附近的人工模拟地下空洞模型进行检测。结果表明:AB-50 MHz非屏蔽天线和AB-150 MHz屏蔽天线均能检测到空洞,而AB-250 MHz屏蔽天线则不能检测到空洞;空洞的图像特征为明显的弧形异常反射,AB-150 MHz屏蔽天线检测效果优于AB-50 MHz非屏蔽天线。对以上检测结果进行原因分析,并就输电线路塔基地下异常体检测方法提出建议。
In this paper, AB-50 MHz unscreened antenna, AB-150 MHz and AB-250 MHz screened antenna were selected and the artificial simulated subsurface cavitiy near the base of 220 kV power transmission tower was detected by means of ground penetrating radar. The results showed that the the cavity could be detected by both AB-50 MHz unscreened antenna and AB-150 MHz screened antenna, except AB-250 MHz screened antenna. The digital image feature of cavitiy was curverd abnormal reflections obviously, and the effect of detection with AB-150 MHz screened antenna was better than the AB-50 MHz unscreened antenna. Moreover the detection results were analyzed, and the proposal about detection method of transmission line tower foundation underground anomaly was made.
出处
《内蒙古电力技术》
2013年第6期61-64,共4页
Inner Mongolia Electric Power
基金
内蒙古电力(集团)有限责任公司2011年第二批科技项目
关键词
探地雷达
输电线路塔基
地下空洞
雷达检测
分辨率
ground penetrating radar
transmission line tower foundation
subsurfacecavity
radar testing
resolution
