摘要
对于有通航要求的感潮河段,闸泵联用将使内江排涝时间延长,排涝流量增大,导致排入外江的水流横向流速增大,影响通航。以中顺大围白花头水利枢纽为例,采用物理模型试验的手段模拟闸泵联调的情况下内江排涝对外江通航的影响,并提出了适用于涨潮、落潮及转潮不同工况下的整治措施。根据试验结果提出:在内外江交汇口设置两排导流墩,靠内江的一排导流墩作用是将内江出来的水流均匀分成若干股,第2排导流墩与第1排交错布置,并呈45°交角,作用是将分散的水流打散,利用多股水流碰撞的原理将能量消散掉,从而达到降速的目的。该整治技术具有普适性,可应用于类似工程河段,对促进珠江三角洲航运事业发展具有重要意义。
For the tidal river with navigation requirements,the combined use of sluice and pump will extend the drainage time of inner river and increase the drainage flow,which will lead to the increasing velocity of horizontal flow discharged from inner river into the outer river and affect the navigation.Taking the Baihuatou water conservancy project in Zhongshun polder as an example,the influence of inner river drainage on the navigation was analyzed by physical model test,and the flow adjustment measures suitable for different working conditions of rising tide,falling tide and turning tide were put forward.According to the experimental results,two rows of diversion piers at the intersection of the inner river and outer river were set.The first row of diversion pier near the inner river is to divide the water flow from the inner river into several strands.The second row intersects with the first row with 45 degrees,which can disperse the scattered water flow and achieve the purpose of deceleration by multiple flow collision.The flow adjustment technology is universal and can be applied to similar engineering river reaches,which is of great significance to promoting the development of navigation industry in the Pearl River Delta.
作者
张艳艳
张康
王建平
胡晓张
张金明
ZHANG Yanyan;ZHANG Kang;WANG Jianping;HU Xiaozhang;ZHANG Jinming(Key Laboratory of the Pearl River Estuarine Dynamics and Associated Process Regulation of Ministry of Water Resources,Pearl River Hydraulic Research Institute of Pearl River Water Resources Commission,Guangzhou 510611,China)
出处
《人民长江》
北大核心
2022年第1期13-17,24,共6页
Yangtze River
关键词
内江排涝
整流措施
物理模型试验
导流墩
外江通航:中顺大围白花头水利枢纽
inner river drainage
flow adjustment measures
physical model test
diversion pier
outer river navigation
Baihuatou water conservancy project in Zhongshun polder
