Measuring ice thickness around the curve and piers in the Yellow River with ground penetrating radar
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Abstract:
The freezing process of yellow river is a key point of the study of Yellow River ice flood prevention, detection of the ice thickness around the curve and piers has important significance for prevention of the ice flood. The ground penetrating radar has the advantages of portability, high efficiency, continuous, fast and real time for ice thickness detection. The frequency of the radar antenna determines the penetration depth and resolution of the radar wave. From the radar images could clearly identify the air - water interface and ice - water interface. The accuracy of the measurement results was further improved by using ice thickness data from the field drilling to calculate radar propagation velocity in the ice. The measurement results clearly showed that the distribution of ice thickness at the bend and pier is uneven. The thickness of the ice on the north side of piers and the main channel of the curve is thicker. The ground penetrating radar with 200 Mhz antenna can penetrate the Yellow River ice, the radar images can clearly show the ice-water interface. Provide the basic data for the analysis of the yellow river ice freezing and melting process and governance the ice jam in break-up period.
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