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peratures above the upstream sediment elevation,downstream,and in the areas affected by the flood-discharge holes
of the dam body change periodically with seasons. The measured indicators such as the highest temperature,lowest
temperature,foundation temperature difference,and maximum temperature difference all show good regularity. Due
to the significant differences between the measured sediment temperature and reservoir water temperature and the pre‐
dicted values at the design stage,the measured steady temperature of the dam body is higher than the original design
prediction. The steady temperature distribution is close to a uniform isothermal field,which makes the actual founda‐
tion temperature difference and the upstream-downstream temperature difference of the dam body smaller than the
design predictions. This reduces the tensile stress of the dam body caused by the temperature difference,which is
beneficial for preventing cracks in concrete.
Keywords:the Three Gorges Gravity Dam;safety monitoring;reservoir temperature;temperature field;tempera‐
ture difference
(责任编辑:王 婧)
(上接第 990 页)
Study on water transfer mechanisms of the Yangtze River and Yellow River inter-basin
multi-route networking mutualism I:mechanisms and model
1 1 2 1 3 2
FU Xiang ,ZHAO Xiaodan ,PENG Shaoming ,FAN Zhipeng ,WANG Yu ,LI Yunling
(1. State Key Laboratory of Water Resources Engineering and Management,Wuhan University,Wuhan 430072,China;
2. MWR General Institute of Water Resources and Hydropower Planning and Design,Beijing 100120,China;
3. Yellow River Conservancy Commission,Ministry of Water Resources,Zhengzhou 450003,China)
Abstract:Study on the inter-basin and multi-line network water transfer mechanism of the Yangtze River and the
Yellow River in the context of changing environments is of great significance for enhancing the capacity of water
resources security of the Yellow River Basin. This paper focuses on the Yangtze River and the Yellow River inter-
basin multi-line water transfer,integrates the characteristics and advantages of each of the three routes of the South-
to-North Water Diversion,and proposes the definition,the overall structure,and the interaction relationship
between components of the Yangtze River and Yellow River inter-basin network of mutual water transfer mechanisms.
A multi-scale,multi-process,multi-factor,and multi-constraint source-flow-network-allocation synergistic optimi‐
zation model was constructed around the multi-basin water network features of multi-source supply,multi-route
mutual aid,multi-engineering regulation,multi-target conflict,and multi-subject game. In consideration of the inter‐
active characteristics of the source-flow network and distribution system,the following synergistic development objec‐
tives were established:guaranteeing the efficient operation of the water network,maintaining the spatial equilibrium
of water resources,facilitating socio-economic development,and ensuring ecological health. To achieve these objec‐
tives,a synergistic optimization algorithm based on NSGA-II and cooperative game theory was proposed to allocate
water network resources in a flexible and mutually beneficial manner.
Keywords:Yangtze River;Yellow River;inter-basin water transfer;water network mutual assistance;water trans‐
fer mechanism;coordinated optimization of water source-flow-network-allocation
(责任编辑:耿庆斋)
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