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介绍一个说明利用自然电位法(SP)圈定土堤坝渗水带的实例。在得克萨斯洲东南部一个水库的三条土堤坝上获得了自然电位观测结果。各条堤坝上自然电位值分布的等值线图反映出堤坝内部密集的渗漏带和渗水的方向。这些自电异常的幅度显示各堤坝上相应的渗漏强度。
An example is described to delineate the seepage zone of earth-embankment dam by using natural potential method (SP). Natural potential observations were obtained on three embankments of a reservoir in southeastern Texas. Contour plots of the natural potential distributions on each dyke indicate the direction of dense seepage and seepage within the dyke. The magnitude of these self-anomalies shows the corresponding leak strength on each dam.