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本文是在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、滑行阻力,以及机耕船名义接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 test and the indoor model test results, this paper discusses the gliding and gliding resistance of the hull of the plowed vessel from the aspects of soil deformation, hull movement and stress, data analysis and so on, Impact on them. In this paper, the gliding subsidence of the hull is divided into the part which is represented by the soil bearing pressure parameter and the nominal ground pressure, and the compensation part which is influenced by the size of the probe. The empirical equation combining the test results is given. The analysis shows that the sliding resistance of the hull in the deep muddy paddy field is not appropriate to be expressed by the principle of compaction work or simple frictional resistance. It is a comprehensive resistance which includes the functions of friction, adsorption, pushing and towing. From a simple and practical point of view, this paper leads to the empirical equation of the linear relationship between the sliding resistance and the nominal ground pressure.