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作者将地球物理瞬变电磁法(TEM)应用于堤防管涌渗漏隐患探测,并研制成功 SDC2 型堤坝渗漏探测仪. 瞬变电磁法属无损探测,没有插入地下的部件,具有分辨率高、探测速度快、操作简便等优点,既可用于堤防和土坝渗漏隐患扫描普查,又可用来定位堤防管涌通道. 在湖南省岳阳县麻塘垸、大毛家湖和中洲垸大堤上进行了枯水期堤防渗漏隐患探测及洪水期管涌通道定位,测线总长 17.4 km,探测深度 0~60 m. 枯水期探测出大毛家湖堤存在 5 处管涌渗漏隐患,洪水期这些部位均出现管涌险情,验证了探测结果的正确性,说明瞬变电磁法是探测堤防管涌渗漏隐患的有效方法.
The author applies the geophysical transient electromagnetic method (TEM) to the detection of the hidden dangers of embankment pipe leakage and has successfully developed the SDC-2 type dam leakage detector. Transient electromagnetic method is a non-destructive detection, not inserted underground components, with high resolution, fast detection, easy operation, etc., both for dike and earth dam leakage scanning census, but also can be used to locate the dike piping passage. In the embankment embankment in Yueyang County, Yueyang County, Hunan Province, Datang Maojian Lake and embankment embankment embankment carried out during the dry season embankment leakage detection and flood piping channel positioning, measuring a total length of 17.4 km, the detection depth of 0 ~ 60 m. During the dry season, 5 pipe infiltration hazards were found in Damajiahu Embankment. The danger of pipe plunging occurred in these areas during the flood period. The correctness of the detection results was verified. The transient electromagnetic method is an effective method to detect the leakage of embankment pipe piles.