水利学报2025，Vol.56Issue(4)：511-518,8.DOI:10.13243/j.cnki.slxb.20240531
南水北调中线工程典型建筑物冬季失温精细观测
High-resolution water temperature observation of typical structures in the Middle Route of South-to-North Water Diversion Project
摘要
Abstract
The Middle Route of South-to-North Water Diversion Project spans eight latitudes and transports water from south to north.The significant differences of the latitude,the meteorological conditions of freezing and thawing,and the complex composition of canal structures leads to complex water diversion processes,such as open flow,ice flow and ice covered flow in winter.In order to ensure the safe operation,the flow discharge of the Middle Route Proj-ect is only 31％-47％of the design flow in winter,which seriously limits the benefit of the project.The water tempera-ture controls ice processes.Therefore,clarifying the temperature loss characteristics of the Middle Route of South-to-North Water Diversion Project is important to improve the water delivery capacity in winter.The Middle Route of South-to-North Water Diversion Project is composed of inverted siphon,aqueduct,open channel,tunnel and other canal structures.Due to the influence of boundary conditions,the temperature loss characteristics are significantly different.Especially,some canal structures are notably short in length,and the high precision measurement of water temperature is required.So the water temperature loss characteristics of each canal structure are unclear.The proto-type measurement was carried out from Beijing to Shijiazhuang Section with high risk of ice jam.The temperature loss of four types of canal structures,including inverted siphon,aqueduct,open channel and tunnel,was measured.The temperature loss rate of different canal structures was compared and analyzed.The research results can improve the accuracy of water temperature prediction models for the South to North Water Diversion Project or similar water trans-fer projects.关键词
南水北调中线工程/水温/明渠/倒虹吸/渡槽/隧洞Key words
the Middle Route of the South-to-North Water Diversion Project/water temperature/open channel/inverted siphon/aqueduct/tunnel分类
水利科学引用本文复制引用
付辉,郭新蕾,潘佳佳,脱有才,徐恒晖..南水北调中线工程典型建筑物冬季失温精细观测[J].水利学报,2025,56(4):511-518,8.基金项目
国家重点研发计划项目(2022YFC3202500) （2022YFC3202500）
流域水循环模拟与调控国家重点实验室自由探索课题(SKL2024YJTS09) （SKL2024YJTS09）
中国水科院科研专项(HY0145B032021) （HY0145B032021）
