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探地雷達，非金屬管線探測儀

发布日期：2025-03-04 15:07:51 作者：揚塵檢測儀來源：揚塵監測系統浏覽量：1201

在城市建设高速推进的当下，地铁、高架桥、地下建筑等项目纷纷上马，顶管施工技术的应用也愈发普遍，深埋管线的数量随之急剧增长。通常，管顶深度超过 3.0m 的管线被定义为深埋管线。非金属管材凭借无毒、无锈、使用寿命长等优点，在各类专业管线铺设中越来越受青睐。如此一来，在地下管线探测作业时，常常会碰到大埋深的非金属管线。

由于這類管線存在電流傳輸衰減迅速，甚至完全不導電的情況，傳統的電磁感應探測方法便難以發揮作用。于是，探地雷達法成爲了探測此類管線的主要技術手段。

探地雷達作爲非金屬管線探測儀的典型代表，是近年來發展極爲迅速的高分辨率、高效率無損探測技術設備。它主要由便攜式計算機、主機、天線、電源以及其他一些附件共同組成。

工作時，探地雷達利用高頻廣譜電磁探測技術，向地下發射脈沖狀的高頻寬帶電磁波。當這些電磁波在地下介質中傳播，遇到像非金屬管線這類存在電性差異的地下目標體時，就會産生反射現象。地面上的天線會對反射回來的電磁波進行信號處理和分析，通過對信號的波形、幅度、強度等參數進行研究，能夠准確推斷出地下非金屬管線的位置、結構以及幾何形狀，進而達成探測目的。

探地雷達能夠有效工作，正是基于電磁波在不同介質中會出現反射、透射或折射的特性，在非金屬管線探測工作中展現出強大的效能。

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