Abstract:
With the development of science and the progress of monitoring technology, many studies have applied 3D laser scanning technology to study soil erosion, it can quantitatively monitor soil erosion deposition. However, if the soil settlement occurs in the process of rainfall, it will seriously affect the monitoring accuracy of the 3D laser scanner, thus affecting the experimental results. Aiming at this problem, this study adopts the indoor artificial simulated rainfall test, inserts the fine steel chisel into the test soil body, through carrying on the statistical analysis to the height data of steel chisel exposed to the slope surface before and after the rainfall, to determine whether the soil settlement occurred in the test process. The test soil was loess taken from Ansai county and Suide county respectively. The thickness of the test soil was 30 cm. The test conditions included 2 kinds of rain intensity, 2 slope lengths and 5 slope gradients. The results show that there is no significant difference in the length of the steel chisel exposed to the slope surface before and after rainfall in most of the test conditions (P
