| 摘要 |
The invention relates to a method and a measuring device for height surveillance of bottom and crest contours in filled-up flow cross-sections, especially in culverts. The measuring device consists of a float 2 which is cylindrically constructed and contains a hole 4 to which a pressure sensor 3 is connected. Furthermore, the measuring device contains a non-floating pressure sensor 10 on a feed line 9. Since the float 2 always moves along the crest contour due to its lift, the pressure sensor 3 records the water pressure 5 whilst the pressure sensor 10 measures the water pressure 11; both signals are stored in an electronic storage unit 7. By hauling the measuring device on a guide rope 17, the crest contour 14 and the bottom formation 15 are continuously measured in respect of height. The stored data can be evaluated and the results can be represented by means of a computer.
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