【摘要】 植物侧根对土壤增强和斜坡稳定具有重要作用,探讨根土作用的机械效应,建立侧根对土壤牵引效应模型为定量分析植被生态护坡奠定了基础。但多侧根对土壤的牵引效应较复杂且难于分析求解,使计算机仿真成为有效研究方法。该文分析了多侧根对土壤牵引效应的力学过程,建立了可用于计算机仿真的多侧根土壤牵引效应模型,并以MATLAB为工具,建立了仿真系统。通过计算机仿真,为复杂的多侧根土壤牵引效应的分析提供仿真平台,不仅可以求解计算模型,而且还能通过改变模型的输入变量和模型参数对模型的系统行为进行观察和预测。最后,以云南松侧根为例进行了仿真和试验测试,结果表明仿真模型具有一定的精度,所建立的仿真系统是有效的。更多还原

【Abstract】 Plant lateral roots play an important role in soil reinforcement and slope stabilization. Investigating the mechanical effect of roots on soil, and establishing the traction effect model of lateral roots on soil may provide a basis contributing to ecological slope protection. However, traction effect of plant lateral roots on soil is intricate to be analyzed, and its model is difficult to be solved. Therefore, computer simulation appears to be a viable solution to this problem. In this paper, the traction effect model of plant lateral roots on soil was established for computer simulation on the basis of analyzing its mechanics process, and the relative computer simulation system was developed in MATLAB to provide a simulation platform for analyzing the traction effect of lateral roots. In this platform, not only the complicated model of traction effect can be solved, but also its behavior can be observed and predicted in modeling simulation by changing the input variables and model parameters. Finally, the simulation and experimental testing were implemented for lateral roots of Yunnan pine. The results show that the proposed simulation model of traction effect is of good precision, and the simulation system is valid and reliable .更多还原