基于取淡与流量控制的压咸调度方案研究

珠江三角洲素有"三江汇流、八门出海"之称,河网、河口系统之复杂在世界上首屈一指,咸潮活动也因复杂的水动力系统表现出异于世界其他河口的特点。同时,珠江三角洲人口众多、经济活动活跃,受咸潮影响人口超过1 000万人、取水规模超过1 000×104m³/d。为此,珠江防总从2005年起已连续8次实施了水量调度,提出了梧州压咸流量不低于1 800 m³/s的单一控制指标,保障了供水安全。在8次水量调度的基础上,根据咸潮与径流、潮汐的响应关系,分3个流量级提出了基于平岗泵站和联石湾水闸取淡目标的西江北江压咸补淡调度方案。

Pearl River Water Diversion Research Based on Drinking Water Supply Target and Flow Control

Pearl River Delta is characterized by the staggered distribution of rivers network and estuarine system, which is different from the other estuaries of the world. The salty water intrusion in this area is also different as the complex hydrodynamic system. At the same time, Pearl River Delta has a large population and active economic activities, the population affected by salty water intrusion is over 10 million, and the affected daily water supply is over 10million m3 . Thus, Pearl River Water Resources Commission of MWR has implemented water diversion for 8 years since 2005, the flow for repelling salty water intrusion can not be less than 1 800m3 /s at the Wuzhou station. Based on the relationship between the salty tide and runoff, this paper made an analysis and put forward a new water diversion scheme based on the drinking water supply target and flow controlling.