摘要
研究天然河流，特别是感潮河口段河流的泥沙冲淤问题时，由于其复杂性和多变性，使得数学模型成为一种重要研究手段。本文采用天然冲积河道中缓变非恒定一维水流泥沙方程组建立了研究徒骇河感潮河段泥沙冲淤变化的数学模型。数值模拟时对河道进行了梯形断面概化。通过过河道子测站的实测资料对数值计算结果进行验证，二者吻合较好，在此基础上对徒骇河上游坝上处建闸后该河段在各级径流量影响下的冲淤变化趋势作出了模拟。
For an estuary, the tidal characteristics and consequential changes in mix and sedimentation processes are complicated and affected by variotis factors. Hence numerical simulation of tidal-generated currents and sedimentation processes is an important means. In this paper, a mathematical model is developed to solve the problem of one dimensional tide and sediment processes computation. A transverse trapezoidal schematization of estuary- cross sections is used in this model. The computation results show that good agreement is obtained when we compare the model data with the field test at Guohedaozi cross section. And the sedimentation processes are simulated after building a gate tidal-proof for 4 cases of runoff discharge in the Tuhaihe Estuary.
出处
《海洋湖沼通报》
CSCD
北大核心
1999年第4期14-20,共7页
Transactions of Oceanology and Limnology
关键词
感潮河段
泥沙冲淤
断面概化
数值模拟
泥沙
Estuary, Erosion and accretion, Transverse trapezoidal schematization, Numerical Simulation
