淤泥临界起动条件及冲刷率试验研究

本文根据试验结果,从粘性细颗粒泥沙受力分析出发,考虑淤泥密实度及粒径的变化对细颗粒泥沙间粘结力的影响,对粘性细颗粒泥沙临界起动条件变化规律进行了探讨;并对其冲刷串与水流切力的关系进行了初步研究,文中关于粘性细颗粒泥抄临界起动条件表达式经所收集到国内外实测资料验证,吻合程度较高。

Study on Critical Motion and Erosion of Cohesive Sediment

the main results of the test on critical motion and erosion of cohesive sediment are summarized in this paper. Based on the analyses of the forces acting on sediment, considering packing coefficient, size and cohesive force, the experssions of critical motion and erosion of cohesive fine sediment have been obtained. The formulaes for critical motion in this paper have been checked with other experimental data and the comparisional results are satisfactory. They are also useful for general engineerings of port and channel.