摘要
条子泥表层滩地土极易受水流影响而起动,导致堤坡脚塌陷,需要进行保护,而合适的保护方法与泥沙起动流速有关。通过室内物理模型试验得到了条子泥表层粉细砂不同水深下的起动流速,与当前使用较多的起动流速计算公式,包括张瑞瑾、窦国仁、唐存本等公式,进行比较。给出了条子泥表层粉细砂起动流速计算公式建议。
Entrainment of the topsoil at Tiaozini beach is vulnerable to water flow, and it leads to the collapse of embankment toe, thus protection measure shall be taken. Appropriate protection measures are associated with the threshold velocity. The threshold velocities of the fine silty sand sampled from the topsoil at Tiaozini beach under different water depths are tested by indoor experiments, and compared with those calculated by several widely used calculation formula, including Zhang Ruijin, Dou Guoren, Tang Cunben, et al. Based on the results of the experiments, suitable formula for the threshold velocity of fine sihy sand of topsoil at Tiaozini beach are proposed.
出处
《水运工程》
北大核心
2015年第6期22-25,共4页
Port & Waterway Engineering
关键词
起动流速
表层粉细沙
条子泥
threshold velocity
fine silty sand of the topsoil
Tiaozini
