System and method for monitoring seawater intrusion-ground water level-soil salinization in real time
A technology of seawater intrusion and groundwater level, which is applied to the liquid level indicator and material resistance of physical variable measurement. cost effect
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[0065] Taking the Yellow River Delta as an example, there are widespread seawater intrusion, groundwater table, and soil salinization phenomena in this area. Firstly, carry out risk survey and assessment, and select as sample points. Sampling was carried out on site, and the resistivity of the soil was measured as 0.28Ω·m when it was saturated with seawater, 42.4Ω·m when it was saturated with fresh water, and 3.35Ω·m when the salinity was 0.3%. , the threshold for monitoring and early warning of groundwater level and soil salinization. According to the geological conditions of the sample point (the depth of the groundwater is about 0.8m, and the thickness of the aquifer is 1m), the length of the resistivity measuring device 9 is designed to be 2m. Prepare a circular cylindrical mold with an outer diameter of 50mm, an inner diameter of 40mm, and a height of 20mm, and cast nylon to form a nylon module 3, and forge a copper electrode ring 2 with an outer diameter of 51mm, an inn...
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