Monitoring technique of freshwater/ saltwater interface level using time domain reflectometry

为建立滨海含水层淡水资源盐碱化监测技术，研制了一种测量淡水/咸水界面水位的新型探头，并通过实验室实验验证了该探头的有效性。在实验塔中假设产生了界面，并通过放置在柱中心的探头测量了液位变化。结果表明，当界面在柱内清晰地产生时，可以用探头测量液位。我们的结论是，研制的探头对监测沿海含水层淡水资源的盐碱化是有用的。

To establish a monitoring technique for salinization of freshwater resources stored in a coastal aquifer, a novel probe to measure freshwater/ saltwater interface level was developed and the effectiveness of the probe was examined through the laboratory experiment. The interface was hypothetically produced in the experimental column and the level variation was measured by the probe which was set at center of the column. The results showed that the level can be measured with the probe when the interface was produced clearly in the column. We concluded that the developed probe is useful for monitoring the salinization of freshwater resources in a coastal aquifer.