东溪口新开卵石航槽的稳定性分析  

Stability Analysis of Dongxikou Newly Opened Gravel Channel

作　　者：廖江花[1,2] 陈玉丹[1,2] 陈杏文[1,2] 李沛霖[1,2] 

机构地区：[1]重庆交通大学水利水运工程教育部重点实验室,重庆400074 [2]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

出　　处：《水利科技与经济》2017年第3期1-5,共5页Water Conservancy Science and Technology and Economy

摘　　要：东溪口新开航槽即弯又长,且整治河段上下游卵石运动剧烈,将对新开航槽的稳定产生影响。以动床模型试验为手段,结合理论分析,就东溪口整治河段的卵石推移质输移运动规律、推移质输沙带的底流特性、以及挖槽区的输沙能力进行研究,通过河床的自动塑造来预测挖槽区的冲淤演变趋势。研究结果表明,上游来沙基本淤积在航槽进口段,航槽中、下部无明显淤积现象,航槽中、下段基本稳定。建议在航槽进口段预留足够的备淤深度。Dongxikou newly opened gravel channel is bending and long, upstream and downstream gravel movement of the regulation river reach is violently, which will have an impact on the stability of new sail channel. This paper adopt the movable bed model and theoretical analysis to research the transport （behavior） of gravel bedload in regulation river reach of Dong Xikou to study the bot- tom flow characteristics in the sediment deposition area, and to calculate the sediment transporting capacity of left channel. By using automatic shaping method for predicting the riverbed dredged channel erosion and deposition evolution trend. The research indicates that upstream sediments mainly deposit in the import area of the channel, there are no obvious siltation in the middle and ex- port of the channel, and these parts of channel basic remain stable.. So the sufficient deposition depth is recommended in the inlet section of the channel.

关 键 词：动床模型试验 底流特性 卵石输移特性 航槽稳定性 

分 类 号：TV212[水利工程—水文学及水资源]