三峡水库影响前重庆主城区河段河床演变分析  

Analysis of River Evolvement of Chongqing City before the Influence of Three Gorges Reservoir

作　　者：刘德春 樊琪虹 李俊 

机构地区：[1]长江上游水文水资源勘测局,重庆400014

出　　处：《水文》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)

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.

关 键 词：重庆主城区河段 冲淤变化 变动回水区 三峡水库 

分 类 号：P332.3[天文地球—水文科学]