艳洲枢纽下游设计最低通航水位论证  

Demonstration of design lowest navigable water level downstream from Yanzhou Hydro-junction

作　　者：唐蔚 周千凯 周乐序 吴娴 唐洁 TANG Wei;ZHOU Qian-kai;ZHOU Le-xu;WU Xian;TANG Jie(Hunan Provincial Communications Planning Survey&Design Institute Co.,Ltd.,Changsha 410203,China;Hunan Provincial Water Transportation Construction&Investment Group Co.,Ltd.,Changsha 410011,China)

机构地区：[1]湖南省交通规划勘察设计院有限公司,湖南长沙410203 [2]湖南省水运建设投资集团有限公司,湖南长沙410011

出　　处：《水运工程》2022年第11期128-132,共5页Port & Waterway Engineering

摘　　要：随着澧水尾闾航道项目的逐步实施,澧水下游河道水位及流量有较大变化。其枯水流量因三峡枢纽及上游两大水库的调蓄济枯作用呈增加趋势,但枯水水位呈略微下降趋势,津市水文站水位流量关系也出现了下降。为确定澧水末端梯级艳洲枢纽船闸下游最低通航水位,采用计算枯水期水面比降等方法,结合航道整治及采砂活动等情况分析上述现象产生的原因及主要变化趋势。提出一种确定艳洲枢纽下游近期及远期最低通航水位的方法,论证其预留远期水位下降值的合理性。With the gradual implementation of the Lishui tail channel project, the water level and flow in the lower reaches of the Lishui River have changed greatly. The low flow of the lower reaches increased due to the regulation and storage of the Three Gorges Hydro-junction and two upstream reservoirs, while the low water level showed a slight downward trend. Moreover, the relationship between the water level and flow at the Jinshi Hydrological Station also decreased. To determine the lowest navigable water level downstream from the ship lock of the Yanzhou Hydro-junction at the end cascade of the Lishui River, this paper employs methods such as calculating the water surface slope in the dry season to analyze the causes and main trends of the above phenomena in consideration of channel regulation and sand mining activities. It then proposes a method of determining the short-term and long-term lowest navigable water levels downstream from the Yanzhou Hydro-junction and demonstrates the rationality of the reserved long-term water level drop.

关 键 词：澧水 枢纽下游最低通航水位 河床下切 水位下降 

分 类 号：U617[交通运输工程—船舶及航道工程]