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为了计算降雨引起的坡面黑土层侵蚀厚度,建立了坡面变形(冲刷厚度)的数学模型。模型包括坡面水流连续方程、水流运动方程、侵蚀方程(水土流失方程)、坡面变形方程。实现了对降雨引起的坡面黑土层侵蚀厚度的数值计算,该成果可预测黑土层流失的年限,为防治水土流失、减轻地质灾害、合理使用耕地和保护生态环境提供科学依据。
In order to calculate the erosion thickness of black soil layer caused by rainfall, a mathematical model of slope deformation (erosion thickness) was established. The model includes the continuous flow equation of slope, the equation of water flow, the equation of erosion (water and soil loss) and the equation of slope deformation. The numerical calculation of rainfall eroded thickness of black soil on slope is realized. The results can forecast the age of black soil erosion, provide scientific basis for preventing and controlling soil erosion, reducing geological disasters, using cultivated land reasonably and protecting ecological environment.