【摘要】 为了定性了解河口泥沙运动的一些规律性,我们一方面可以从实测资料进行一系列分析来获得这方面的知识,另一方面也可以从理论的角度来进行充分的探讨。在实测资料缺乏的情况下,那就只能依靠理论分析来获得河口泥沙的运动规律性知识。本文从两相流体流动的观点出发来讨论河口泥沙的运动和淤积等问题。文中对两个特殊的情形进行了讨论和计算。一个是对一维矩形断面河道进行了简化理论分析。另一个是对某河流某一实际河段进行了计算,并和某测站实测的流量和泥沙浓度的过程线进行了比较,结果是令人满意的。更多还原

【Abstract】 The rules of sand motion at estuary may be known qualitatively through analysis of measured materials or theoretical study. The latter is essential when the measured data are deficient. The problem of motion and silt of sand in estuary was discussed from the view of two-phase flow in this paper. Two special cases were investigated and calculated. One was simplified theoretical analysis of the flow in a river with one-dimensional rectangular section, another was the calculation of the flow in a part of a real river. The comparison was made with measured flux and procedure line of sand density at a station. The result was satisfied.更多还原