【摘要】 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。更多还原

【Abstract】 This paper is based on the experiments done by the group in paddy field and the model tests in laboratory. It explores the velue of slipping sinkage and xesistance and the affection of the nominal ground specific pressure of boat bodies by considering soil def ormation, boat motion and mechanics analy-sis.In this paper, the slipping sinkage is devided into two parts. the part repr-esents by soil penetration parameter and nomical ground specific preessure and the compensation for the influence of the cone size of penetrometer.According to the experiments, on empirical formula is given. An extensive anal-ysis shows that neither the compaction work done nor the simple friction resistance could describe the slipping resistance of the body in deep paddyproperly. The slipping resistance is composed of many factors-f riction, stic-king, bulldozing and viscous drag. For the convenience of use, the author prese-nts an empirical formula which expresses the slipping resistauce as a linear function of the nominal ground specific pressure.更多还原