水田土壤承压模型的建立与试验

针对不同种类水田土壤承压模型的差异性等问题,提出一种武汉黄棕壤水田土壤承压模型的建立方法。依据黄棕壤水田土壤力学特性设计了3种面积不同的测板,基于光滑粒子流体动力学(SPH)算法构建了测板-水田分层土壤SPH动力学模型,研究了测板的贯入深度与时间、承压力之间的关系,并进行了田间试验。结果表明:测板面积S=9.95cm 2的模拟贯入土壤结果与田间试验结果高度吻合,表明该仿真方法对建立水田土壤承压模型可行,能客观反映出黄棕壤水田土壤的承压特性。

The Establishment and Experiments of Pressure-sinkage Model in Paddy Field

In view of the differences in soil pressure models of different kinds of paddy field,this paper proposes a method for the establishment of soil pressure models for yellow-brown soil water fields in Wuhan is proposed.Based on the soil mechanical characteristics of yellow brown soil paddy field,three different area measuring plates are designed,and a slab-water field stratified soil SPH dynamics model is constructed based on the smooth particle hydrodynamics(SPH)algorithm.The relationship between depth of inbound depth and time and pressure was studied,and field experiments were carried out.The results show that the simulated penetration results of the board area S=9.95cm 2 are in good agreement with the field test results shows that the simulation method is feasible for establishing soil pressure model in the paddy field,and the simulation model can objectively reflect the pressure characteristics of the soil in the yellow brown soil.