Abstract
The measurement of failure mass is very difficult because gravity erosion usually occurs randomly and it combines with hydraulic erosion. Here, we present a novel structured-light 3D surface measuring apparatus, the topography meter, which could quantitatively measure the time-variable gravity erosion on the steep loess slopes. With the topography meter, a 3D geometric shape of the target surface could be digitally reconstructed, and then, the slope parameters, including the volume, projected area, and gradient distribution, could be obtained. By comparing the slope geometries in the moments before and after the erosion incident on the snapshot images at a particular time, we could obtain the volume of gravity erosion and many other erosion data. A series of calibration tests were conducted and the results showed that the accuracy of this technique was high and sufficient for exploring the mechanism of slope erosion.
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Xu, X., Zhu, T., Zhang, H., Gao, L. (2020). An Innovative Measurement Instrument: Topography Meter. In: Experimental Erosion. Springer, Singapore. https://doi.org/10.1007/978-981-15-3801-8_4
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DOI: https://doi.org/10.1007/978-981-15-3801-8_4
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