摘要
本文首先介绍了所用数学模型的特点.针对孟加拉国布拉马普特拉河(Brahmaputra R.,简称布河)游荡性河道的特性,根据原型和概化的河道的输水和输沙相等的概念,将布河宽浅多汉的河道断面拼为当量的单一河道.在分析比较的基础上,确定了部分年份的泥沙资料.由数模对1965年—1989年的实测资料进行了验证计算,结果表明:计算值与实测值相符较好.对束窄后的布河河道整治方案进行了计算预报,指出了布河的发展趋势.文中还对一些影响计算结果的因素进行了敏感性分析,指出了其中一些较为敏感的影响因素.
In this paper,the characteristics of mathematical model simulating the channel deformation of Brahmaputra River in Bangladesh are described.Under the assumption that the water conveying and sediment carrying capacities in prototype and normalized channels are equal,a single equ-vialent channel is adopted as a calculating section.Based on analysis and comparison of measured data,some sediment data,which failed to measure,are determined.The calculation results of the model agree well with the deformation of the river observed during 1965-1989.Then,the forecast of river deformation under different methods of regulations is presented.Finally,the sensitivity analysis is carried out,and some sensitive factors are pointed out.
出处
《水利学报》
EI
CSCD
北大核心
1992年第10期61-67,共7页
Journal of Hydraulic Engineering
