三峡常年库区黄花城航道治理  

Regulation of Huanghuacheng reach in permanent backwater region of Three Gorges reservoir

作　　者：李文杰[1] 宋禹辰 杨胜发[1] 王涛 

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]长江重庆航运工程勘察设计院,重庆401147

出　　处：《水运工程》2016年第4期141-147,共7页Port & Waterway Engineering

基　　金：国家科技支撑计划课题(2011BAB09B01);交通运输部应用基础研究项目(2014329814310)

摘　　要：三峡水库蓄水后,常年回水区黄花城水道左汊泥沙淤积严重,淤积物多为中值粒径在0.01 mm左右的细颗粒泥沙,只有其处于输沙流速带时才能够不发生淤积,单一依靠传统疏浚方法难以持久维护左汊航道条件。本文提出在黄花城江心洲洲头处修建一条导流坝以改善航道分流比从而增大左汊流量的整治思路。数值模拟和模型试验结果表明,采用导流坝分流措施后,黄花城河段左汊流速达到输沙流速带,从而保证该区域保持不冲不淤的状态。得出该河段将航道疏浚工程与修建导流坝改善分流比相结合的治理方法。After the impoundment of the Three Gorges reservoir （TGR）, the velocity of the left channel of Huanghuacheng reach in the permanent backwater region of TGR deposited badly. The depositions are fine sediments with median diameters of about 0. 01 mm, thus it is controversial to apply the traditional waterway dredging theory. A diversion dam-based regulation scheme is proposed to improve the diversion ratio and enlarge the velocity of the left channel. Numerical simulation and model experiment of renovation plan show that the velocity of the left channel reaches the sediment transportation-velocity, indicating that the deposition area keeps no more scour or deposition. The regulation method which combines waterway dredging with diversion dam is proposed.

关 键 词：黄花城航道 分流比 导流坝 数值模拟 模型试验 

分 类 号：U617[交通运输工程—船舶及航道工程]