三峡水库135～139m蓄水阶段万州—李渡河段床沙粒径变化特性  

Variety Characteristics of Sediment Size in Wanzhou-Lidu Reach during 135-139m Water Phase of the Three Gorges Reservoir

作　　者：杨胜发[1] 王筱[1] 胡江[1] 

机构地区：[1]重庆交通大学河海学院,重庆400074

出　　处：《重庆交通大学学报（自然科学版）》2011年第6期1384-1387,共4页Journal of Chongqing Jiaotong University(Natural Science)

摘　　要：从2003年6月—2006年9月三峡水库库水位按135～139 m方式运行(枯水期坝前水位139 m,汛期坝前水位135 m),其回水末端位于涪陵李渡附近,常年库区在丰都以下。分析了该阶段蓄水期三峡库区原型观测资料,研究了万州—涪陵李渡河段床沙沿程变化特性及淤积物的级配组成,由该河段的床沙粒径变化分析其泥沙基本运动规律,从而对该河段以至于三峡库区的泥沙运动规律有一个初步的认识。From Jun.2003 to Sep.2006,the Three Ggorges Reservoir is running with the 135-139 m dispatching operation scheme.The scheme means the water level is 139m during low water season and 135m during flood season.The backwater end is located at Lidu in Fuling district,and the reach ever in back water is below Fengdu.Through analyzing the prototype observation data of the Three Gorges Reservoir,the variety characteristics and the gradation of sediment in this reach has been studied.The rule of sediment motion is obtained based on the analysis of sediment size in this reach,which could be a preliminary understanding of sediment motion rule in the Three Gorges Reservoir district.

关 键 词：三峡水库 床沙 淤积物 泥沙运动 

分 类 号：TV145[水利工程—水力学及河流动力学]