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在水槽实验室进行沉积作用模拟实验,在国内还是首次,我们通过湘江株州江段现代沉积物冲淤规律和底形实验研究,获得了理想的实验成果。沉积物起动、搬运、沉积与临界流速和福劳德数的关系不仅与颗较大小有关,而且明显地与颗粒比重有关。其底形及其发育序列与福劳德数的关系的规律性是明显的,但是,各种底形形成时和稳定时的福劳德数都较小,这是由于该沉积物的比重小。
In the sink laboratory for sedimentation simulation experiments, for the first time in China, we obtained the ideal experimental results through the research on the scouring and silting law and the bottom shape of the modern sediment in the Zhuzhou section of the Xiangjiang River. Sediment start-up, handling, deposition and the relationship between the critical velocity and the Froude number are not only related to the size of the particles, but also to the specific gravity of the particles. The regularity of its bottom shape and its developmental sequence with the Froude number is obvious, however, the Froude numbers at the time of formation and the stabilization of all kinds of bottom are all smaller, because the proportion of the sediment is small .