乌龙江北岸岸滩演变过程与稳定性分析  

Analysis of Evolution Process and Bank Stability of the Northern Bank of the Wulongjiang River

作　　者：胡朝阳[1] 王新强[1] 董旭龙 王二朋[3] HU Zhao-yang;WANG Xin-qiang;DONG Xu-long;WANG Er-peng(Fujian Provincial Investigation,Design&Research Institute of Water Conservancy&Hydropower,Fuzhou 350001,China;Hebei Zhanghewan Pumped Storage Co.,LTD.,State Grid Xinyuan Company Ltd.,Shijiazhuang 050021,China;Three Gorges Cascade Dispatching&Communication Center,Yichang 443133,China)

机构地区：[1]福建省水利水电勘测设计研究院,福建福州350001 [2]国网新源河北张河湾蓄能发电有限责任公司,河北石家庄050021 [3]三峡水利枢纽梯级调度通信中心,湖北宜昌443133

出　　处：《水电能源科学》2020年第3期129-133,共5页Water Resources and Power

基　　金：福建省水利科技项目。

摘　　要：为研究近期乌龙江北岸岸滩演变过程及稳定性,利用2003~2016年实测水下地形资料,分析了北岸岸滩平面及剖面的变化过程,探讨了岸滩稳定性影响因素。平面变化分析表明,2003~2016年乌龙江北岸岸滩面积总体呈不断减小状态,其中2003~2008年间减小显著;相较于2003年,2016年乌龙江北岸岸滩+1、+3、+5m等高线以上面积分别减少48.53%、39.41%、29.86%。剖面形态演变过程表明,2003~2016年乌龙江北岸岸滩滩面高程基本呈逐年、全线降低态势,岸滩侧蚀后退显著,岸滩宽度减小,岸滩临水侧坡度变陡,断面形态发生显著变化,由上凸型逐渐转变为下凹型。乌龙江北岸岸滩稳定性受水沙动力条件、河床边界条件及人为因素等共同影响,在稳定程度上可初步划分为基本稳定段、相对稳定段、不稳定段三类。In order to study the evolution process and stability of the northern bank of the Wulongjiang River,the adjustments in planform and cross-sectional geometries were investigated,and the factors affecting the bank stability was discussed.The variation in planform geometries indicates that the area of the northern bank has been decreasing continuously from 2003 to 2016,with a significant decrease between 2003 and 2008.Compared with 2003,the area of the northern bank of Wulongjiang River in 2016 was reduced by 48.53%,39.41%and 29.86%respectively above the+1 m,+3 m and+5 mcontour lines.The variation in cross sectional profiles indicates that the elevation of the northern bank in2003-2016 is basically decreasing year by year and decreasing across the board.The side erosion of the bank is remarkably regressed,the width of the bank is reduced,the slope of the shore is steeper,and the shape of the section changes significantly.The bank has gradually changed from the upper convex type to the lower concave type.The stability of the northern bank is affected by the dynamic conditions of water and sediment,riverbed boundary conditions and human factors.In terms of stability,it can be divided into three categories:basic stable section,relatively stable section,and unstable section.

关 键 词：闽江 乌龙江 岸滩稳定性 岸滩侧蚀 河床演变 

分 类 号：TV147[水利工程—水力学及河流动力学]