摘要
重庆主城区河段处于三峡水库变动回水区,又是嘉陵江汇入长江的河段,水流条件和泥沙运动十分复杂。采用重庆主城区河段在三峡水库影响前的1980、1996、2002～2005年观测资料,分析了岸线、洲滩、深槽、冲淤量等变化。结果表明,三峡水库影响前,重庆主城区河段年内有冲有淤,其中汛期主要为淤、汛前与汛后主要为冲,年际间略呈冲刷状态。
The reach of Chongqing City is in the variable backwater region of Three Gorges Reservoir, and it is also the reach as the Jialingjiang River flowing into the Yangtse River. So the water condition and sediment movement here is very complicated. Based on the data of this reach in 1980, 1996 and 2002-2005 before the influence of Three Gorges Reservoir, the variety process of bank line, bottom land, deep trough, as well as erosion and deposition were analyzed, and it is easily to obtain the conclusions as following： Before the influence of Three Gorges Reservoir, both erosion and deposition happened in this reach around the year, in which flood period is the main deposition period while the periods before and after flood are the main erosion periods, so resulting in slightly erosion annually.
出处
《水文》
CSCD
北大核心
2009年第3期72-76,共5页
Journal of China Hydrology
基金
国家重大基础研究计划973项目资助(2003CB415203)
关键词
重庆主城区河段
冲淤变化
变动回水区
三峡水库
reach of Chongqing City
erosion and deposition
variable backwater region
Three Gorges Reservoir
