摘要
坡面土壤颗粒发生侵蚀分离是坡面流侵蚀的起始阶段,因此分析导致坡面土壤颗粒分离的临界水流剪切应力及其影响因素对了解坡面流侵蚀有重要现实和理论意义。通过对坡面流土壤颗粒发生分离进行受力分析,指出导致土壤发生分离的动力因素和阻力因素,建立坡面土壤颗粒受力力学模型。通过对模型求解得出土壤发生侵蚀的临界水流切应力并对其影响因素进行分析,对坡面流土壤侵蚀的微观力学机理作初步的探讨,以期对防治上壤侵蚀和水土保持工作有所借鉴。
On the basis of analysis of force acting on the soil particles in hill slope process, dynamic and resistant factors leading soil particles to separate are put forward ,then the mechanical model is built resolving it and getting the critical flow shearing stress and finally the effective factor is analyzed. By approaching preliminarily mechanical mechanism of soil erosion of hill slope we have the purpose to serve the prediction and control of soil erosion and work for water and soil preservation.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2006年第S2期129-131,共3页
Journal of Liaoning Technical University (Natural Science)
基金
国家自然科学基金重点资助项目(50374020)
国家自然科学基金面上资助项目(50374042)
辽宁省科学技术基金资助项目(20022155)
教育厅重大基础研究计划项目资助(202182055)
关键词
力学分析
力学模型
临界水流剪切应力
影响因素
mchanical analysis
mechanical model
critical flow shearing stress
effective factor
