三峡水库蓄水175m后重庆九龙坡河段冲淤变化  

Analysis of scouring and deposition process at Jiulongpo Reach in Chongqing City after 175 m impoundment of Three Gorges Reservoir

作　　者：付旭辉[1,2] 杨胜发[1] 伍文俊 

机构地区：[1]重庆交通大学国家内河航道整治工程技术研究中心,重庆400074 [2]重庆交通大学水利水运工程教育部重点实验室,重庆400074 [3]长江航道局,湖北武汉430010

出　　处：《人民长江》2012年第20期21-24,共4页Yangtze River

基　　金：国家“十二五”科技支撑计划项目(2012BAB05B03);重庆市科委科技攻关(CSTC 2011AC6103,CSTC 2011GC036);重庆市科委自然科学基金(CSTC 2011JJA30002)

摘　　要：为了研究三峡水库变动回水区——重庆九龙坡河段冲淤变化,整理了该河段2009～2011年的多次河床实测地形图,分析河床演变规律。结果表明,该河段蓄水期淤积的泥沙大部分都会在次年消落期冲刷,难以形成累积性淤积。航道碍航情况多是由于卵砾石推移质淤积和卵砾石沙波造成的。研究成果为该河段的泥沙输移计算、航道整治设计等研究提供了依据。In order to study the scouring and deposition of Jiulongpo Reach of Chongqing City in the backwater region of Three Gorges Reservoir,we analyzed the measured terrain of this river reach from 2009 to 2010.The analysis of the river bed evolution laws shows that the most of silted sediment during impoundment period would be scoured in water level dropping period in the next year,so it is difficult to form cumulative deposition.The impediment navigation is caused by bed load of pebble and gravel,sand wave of pebble and gravel.The results will benefit the channel navigation maintenance and regulation.

关 键 词：推移质输移 悬移质淤积 九龙坡河段 三峡工程 

分 类 号：TV148[水利工程—水力学及河流动力学]