兴隆水利枢纽运行后汉江下游枯水位变化及长江顶托关系调整  

Changes in low water level of lower reaches of Han River and adjustments of the Yangtze River water level uplift relationship after operation of Xinglong hydraulic complex

作　　者：温国楠 WEN Guonan(Hubei Provincial Communications Planning and Design Institute Co.,Ltd.,Wuhan 430051,China)

机构地区：[1]湖北省交通规划设计院股份有限公司,湖北武汉430051

出　　处：《水运工程》2024年第7期117-123,共7页Port & Waterway Engineering

摘　　要：兴隆水利枢纽蓄水运行后,对坝下游枯水位、水位顶托关系等影响已初步显现。系统分析1970—2022年汉江下游水文站、水位站的流量与水位特征等变化。结果表明,汉江兴隆水利枢纽运行后,坝下游各站同流量的枯水位均表现为累积性下降态势,越向下游减幅越小。当汉川—汉口段和仙桃—汉口段水面比降分别低于0.020‰和0.025‰时,长江水位顶托作用显著影响汉川站及仙桃水文站的水位;当水面比降高于0.060‰和0.065‰时,长江水位顶托作用未影响汉川站水位和仙桃水文站。2013—2022年与2003—2012年相比,汉川—汉口段和仙桃—汉口段比降高于0.060‰和0.065‰的时间为增大态势,即2013—2022期间汉江和长江水情组合有利于汉江下游航道水深条件的稳定与发展。After the impoundment and operation of Xinglong hydraulic complex,the impact on the low water level and water level uplift relationship downstream of the dam is preliminarily manifested.We systematically analyze the changes of discharge and water level characteristics of hydrological stations and water level stations in the lower reaches of the Han River from 1970 to 2022.The results show that after the operation of the Xinglong hydraulic complex in the Han River,the downstream of the dam shows a cumulative decline trend of the low water level for the same discharge with a smaller decrease towards the downstream.When the water surface gradient of the Hanchuan to Hankou section and Xiantao to Hankou section is lower than 0.020‰and 0.025‰respectively,the water level uplift effect of the Yangtze River significantly affects the water levels of the Hanchuan and Xiantao hydrological station;when the water surface gradient is higher than 0.060‰and 0.065‰respectively,the water level uplift effect of the Yangtze River water level does not affect the water level at Hanchuan and Xiantao hydrological stations.Comparing with the period from 2003 to 2012,the number of days with a gradient higher than 0.060‰and 0.065‰in the Hanchuan to Hankou section and Xiantao to Hankou section during the period from 2013 to 2022 shows an increasing trend.The combination of the water regime of the Han River and the Yangtze River during the period from 2013 to 2022 is conducive to the stability and development of the water depth conditions in downstream channels of the Han River.

关 键 词：兴隆水利枢纽 汉江下游 同流量的枯水位 水位顶托关系 

分 类 号：U612.23[交通运输工程—船舶及航道工程]