摘要
利用所建立的断面资料数据库及分析系统软件,采用体积法对黄河下游冲淤数量进行了计算,并利用与本系统软件直接接口的通用软件,研究了黄河下游冲淤量的时空分布特点。计算分析表明,近半个世纪黄河下游河道淤积量达64.4亿m3。进入下游的水沙条件既受自然气候条件变化的影响又受水库运用所制约。不同时期河道冲淤量及其分布的差异是黄河下游冲积性河道对不同水沙条件所作出的反应。
Database of range survey is established and used to study the deposition or erosion in the Lower Yellow River.A software program(RGTOOLS)is developed for management of the data obtained through range surveys in nearly50years.It is also used to evaluate the amount and distribution of deposition or erosion in the Lower Yellow River.Volumetric method is used for computation of the amount of deposition.Spatial and temporal variations of the deposition are studied and illustrated with drawings created by EXCEL program that is directly interfaced with RGTOOLS.It is found that a total of6.44billion m 3 were deposited in the Lower Yellow River in nearly half a century.The pattern of deposition varies in response to the variation of the oncoming flow that is influenced by natural climatic variations and also by reservoir operation.
出处
《水文》
CSCD
北大核心
2002年第4期28-31,52,共5页
Journal of China Hydrology
关键词
黄河下游
断面资料
分析系统
冲淤量
体积法
河道
水沙条件
Lower Yellow River
range survey data
database
software of analysis
erosion and deposition
volumetric method
