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| A device to measure dynamic process of slope erosion |
| Zhao Chao1,2， Xu Xiangzhou1， Xu Feilong1， Wang Shufang1 |
| 1.School of Hydraulic Engineering, Dalian University of Technology, 116024, Dalian, Liaoning; 2.Wujiang Company of Goupitan Power Construction Corporation, 564408, Yuqing, Guizhou：China |
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Abstract Dynamic observation of experimental topography is important for research of erosion process and mechanism. This study presents a device, MX2010G topography meter, to measure the dynamic erosion processes, and compares the results on the same slope observed by the device and other conventional meters, respectively. A series of detailed tests on the observing performance of the device were operated. For the landform model with volume of 24000cm3 and different slope gradients, the relative errors of observed volume can be controlled within ±10%, of which the maximum absolute error is 9.0%, and the minimum absolute error is -0.4%. In the range of 120cm×140cm, the coordinate errors of ten selected points for x, y, and z axis are 0.99,0.84 and 0.42cm, respectively. In the linear regression analysis for elevations of the selected points in the 6 sections, both of the regression coefficient b and relevant coefficient R2 are close to 1. As a conclusion, the MX2010G topography meter may be used for precise measurement on the gully wall.
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Received: 29 June 2011
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