摘要
本文提出了水田土壤垂直下陷和水平剪压依时特性的一般流变模型,求得了其流变参数。在自制的可适用于实验室和田间流变试验的装置上,获得了在恒定载荷下水田土壤的特性曲线。基于文中提出的徐变方程及其流变参数的计算结果,与其拖拉机驱动轮动力性能实验资料进行了比较,结果表明时牵引力的预测是合理而接近的。
This paper presents a general rheology model to illustrate the properties of vertical sinkage and horizontal shearing-compression in paddy field soil vs. time and the rheology parameters could be got by themodel. Rheology test equipment which could be used in lab. and field has been developed by authors for obtaining the vertical sinkage and horizontal shearing-compression curves inpaddy field soil under a constant load. The traction prediction based on the application of the creep equation and rheological parameters mentioned above has been to be a resonable approximation by comparing it with the experimental data on dynamic characteristics of tractor's driving wheels.
关键词
水田
土壤
流变性
水平剪压
rheological properties
paddy field soil
horizontal shearing-compression
