【摘要】 本文对闽江有潮河段近二十多年来最大的三次洪水的过程水位进行了数值模拟。由于合理地确定了数学模式、差分格式、稳定性条件、边界条件、Dechezy系数及分叉河道叉口的处理方法,因而使模拟获得较高的精度。将由此而确定的数值计算软件用于试报1984年6月2日闽江特大洪水也获得很好的结果。过程水位预报值与实测值之差都在20cm之内。本文所做的动力数值模拟和现场试报,在我国是一种新的尝试。这一方法已初次在防讯中发挥作用。更多还原

【Abstract】 We have simulated the three of the most disastrous floods which took place in the tidal region of the Min River in the last more than twenty years The high precision in the simulations has been got through the proper defining of the mathematical model, the difference scheme, the boundary conditions, the topographical parameters, Dechezy coefficient and the way to deal with the river forks. The computation programme developed during the simulations was used to predict the disastrous flood taking place in the Min River on June 2, 1984, and a good result was obtained. The differences in the flooding process heights between the observed and the computed are within 20 cm. The dynamic numerical simulations and the practical predction in this paper are domestically new attempts and for the first time the method played part in flood contol.更多还原