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本文在课题组田间电测试验的基础上,结合室内模型试验结果,从土壤变形、船体运动和受力、数据分析等方面探讨了机耕船船体的滑行下陷和滑行阻力问题,以及机耕船名义按地比压对它们的影响。 文中将船体的滑行下陷分为用土壤承压参数和名义接地比压表示的部分,以及因测头尺寸影响的补偿部分,给出了结合本次试验结果的经验方程。 分析表明,船体在深泥脚水田中的滑行阻力用压实功原理或单纯摩擦阻力来表示都是不恰当的,它是包含了摩擦、吸附、推挤、拖带等作用的综合阻力。从简便实用的角度考虑,本文由试验结果引出了滑行阻力与名义接地比压呈线性关系的经验方程。
Based on the field electrical test of the research group and combined with the results of the indoor model test, this paper discusses the problems of sliding subsidence and sliding resistance of the hull of the cultivating ship and the nominal value of the cultivator from the aspects of soil deformation, hull movement and force analysis and data analysis. Land pressure on their impact. In this paper, the gliding subsidence of the hull is divided into the part represented by the soil pressure parameters and the nominal ground pressure, and the compensation part due to the influence of the probe size, and the empirical equation that combines the results of this experiment is given. The analysis shows that the gliding resistance of the hull in deep muddy paddy fields is not suitable due to the principle of compaction work or simple frictional resistance. It is an integrated resistance that includes friction, adsorption, pushing, dragging and so on. From the point of view of convenience and practicality, this paper derives the empirical equation of linear relationship between coasting resistance and nominal ground pressure from the test results.