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采用模型试验法 ,利用模型铲刀和小型压力传感器对模型铲刀表面的法向压力分布规律及土壤流动、粘附情况进行了试验研究 ,拟合出模型铲刀表面法向压力的回归方程。研究结果表明 ,法向压力在模型铲刀表面呈二次曲面分布 ,在模型铲刀的中部取得最大值。法向压力的变化引起土壤变形区域的含水量发生改变 ,导致土壤粘附主要发生在模型铲刀的上部和下部
The model test method was used to study the normal pressure distribution and the soil flow and adhesion on the model blade surface with the model blade and the small pressure sensor. The regression equation of the normal pressure on the blade surface was fitted. The results show that the normal pressure is quadratic surface distribution on the surface of the model blade, and the maximum value is obtained in the middle of the model blade. The change of normal pressure causes the water content in the soil deformation area to change, resulting in the soil adhesion occurring mainly in the upper and lower part of the model blade