Abstract
In this study, a typical spoil ground was selected in the test area, and runoff plots were set up. Through rainfall tests and statistical analysis of the data, the soil erosion law of the spoil ground was studied. The results show that under different rainfall intensities, the soil bulk density is positive to the runoff rate. Correlation indicates that the increase of soil bulk density and runoff rate increase; the increase of soil bulk density increases the soil’s impact resistance, and the erosion rate decreases with the increase of bulk density.
Highlights
As a foreign structure, the road is attached to the natural environment, and has a drastic impact on the hydrological response of the watershed and the process of soil erosion [1]
The study of road soil erosion has attracted the attention of many scholars at home and abroad
Highway spoil ground accounts for 6% of the total number of spoil grounds generated in China's construction activities
Summary
As a foreign structure, the road is attached to the natural environment, and has a drastic impact on the hydrological response of the watershed and the process of soil erosion [1]. Uncovered pavements, excavated slopes, filled slopes, and highway spoil grounds have significantly altered the original landforms, thereby altering the natural hydrological process and the law of soil erosion. The study of soil erosion law in highway spoil grounds has received widespread attention. Soil erosion from highway spoil grounds affects road soil Erosion assessment and estimation of sediment yield in a river basin are both important. Studying the soil erosion laws and runoff and sediment production laws of highway spoil grounds can provide theoretical basis and necessary parameters for estimating soil erosion in spoil grounds. It can supplement and improve road and soil erosion estimation models to provide technical support for regional soil and water loss assessment. The study can improve the calculation accuracy of catchment sediment yield by catchment hydrological models
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