基于水动力河网模型的引江泵站规模论证研究  

Study on scale of pumping station in plain area based on hydrodynamic river network model

作　　者：杨万红[1] 曹命凯[1] 程建华[1] 

机构地区：[1]江苏省水利勘测设计研究院有限公司,江苏扬州225127

出　　处：《人民长江》2018年第3期67-71,106,共6页Yangtze River

基　　金："十二五"国家科技支撑计划项目(2015BAB07B01)

摘　　要：以江苏省南通市引江供水区为例,建立了水动力河网模型,论证了新建泵站的必要性和泵站规模。研究结果表明:仅靠目前五大引水闸自流引江不能满足规划用水的要求;泵站规模越大,抽水量越大,但泵站规模大于180 m^3/s时,内河最低水位的抬高会导致水闸自流引江时间、引水量相应减小,而自引、抽引总水量增加并不明显。从增加供水量、抬高河网水位和影响水闸自流引江量多个方面进行综合考虑和分析,认为新建规模为150 m^3/s的九圩港泵站经济、合理且可行,满足规划用水要求。计算结果较好地反映了滨海感潮河网地区长江潮位、水闸自引、泵站抽引以及河网输水能力与内河水位之间的复杂关系,可为类似区域供水工程的设计提供技术参考。Taking the water diversion region from the Yangtze River in Nantong,Jiangsu as a subject,a hydrodynamic river network model is established,and the necessity of constructing a new pumping station and its scale are discussed. The results show that the five built sluices do not satisfy the planned water demand,thus building a new pumping station is necessary. The larger the scale of a pumping station is,the higher the pumping load is,however,when the scale is larger than 180 m^3/s,the minimum inner river water level increases,which would lead to decrease in gravity diversion duration and flow,and both the gravity flow and the pumping flow increase less. Establishing a pumping station with scale of 150 m^3/s is economical,reasonable and compatible with planned water demand in terms of increasing water supply and water level as well as gravity diversion. The results reflect complex relationship between diversion volume of river network and inner river water level,the Yangtze River tidal level,gravity flow and pumping diversion flow.

关 键 词：水动力模型 供水工程 泵站规模 感潮地区 引江泵站 

分 类 号：TV67[水利工程—水利水电工程]