A combined geophysical method for detecting hidden dangers in seawall engineering
A composition and seawall technology, applied in electromagnetic wave detection, measuring devices, and re-radiation, can solve the problem of not being able to quickly and accurately determine the location of hidden dangers
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[0012] The present invention will be further described below in conjunction with accompanying drawing.
[0013] Earth conductivity measurement is a telemetry method that solves practical problems by studying the spatial and temporal distribution characteristics of the electromagnetic field based on the difference in the conductivity of the underground medium. It belongs to a low-frequency electromagnetic method whose operating frequency is between audio frequency ( n ×10~ n ×10 4 HZ) range. Hidden dangers in the embankment (such as weak layers, loose soil, water flow channels, etc.), or changes in the medium type of the embankment and its structure, porosity, compactness, moisture content, etc., will lead to changes in the conductivity structure of the underground medium. Therefore, the temporal and spatial distribution characteristics of electrical conductivity can be quickly detected through the ground conductivity meter, so as to judge the heterogeneity of the dike body....
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