| 摘要: |
| 【目的】基于“引汉济渭工程”三河口水利枢纽的水工模型试验，研究不同抽水、供水、发电工况下连接洞、秦岭隧洞等流道系统的水流流态，并确定合理的运行条件。【方法】对连接洞进出口及黄三隧洞、秦岭隧洞和连接洞的控制闸处水流流态进行分析，对建筑物体型进行优化，确定控制闸运行条件；验证各个工况下控制闸、连接洞、竖井尾水洞的最终运行水位，从而确定抽水、供水、发电设计水位；研究在抽水和发电试验工况下突然甩负荷和增负荷时竖井尾水洞的水位变化，保证特殊运行工况时建筑物的安全。【结果】抽水试验中，当黄三隧洞来流量较大 (第1、2、5工况)时，运行情况良好，流态稳定，当黄三隧洞来流量较小 (第3、4、6工况) 时，秦岭隧洞进口闸室需下闸抬高水位以满足设计的抽水流量；在供水和发电试验工况中，大部分工况下流态平稳，尾水洞中水位正常，当按最大流量（70 m3/s）运行时，竖井尾水洞水位（548.10 m）则高于连接洞设计的最高水位(547.96 m)。【结论】运行抽水试验工况时，尾水池水位宜保持在545.15 m以上；为了保证发电工况的正常运行，应适当增加尾水池的高度，以满足流道的明流流态。 |
| 关键词: 引汉济渭工程 三河口水利枢纽 水工模型试验 调水工程 水流流态 设计水位 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金项目（51279170） |
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| Water pumping,water supply and power generation system of Sanhekou water conservancy of Water Transmission from Han River to Wei River |
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SUN Jia-qian,ZHANG Gen-guang,CHEN Long,et al
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| Abstract: |
| 【Objective】Based on the hydraulic model of Sanhekou water conservancy of Water Transmission from Han River to Wei River (WTHW),the research investigated the flow pattern at different water pumping, water supply and power generation conditions to obtain optimal operation conditions.【Method】This paper determined the optimal building shape and operating conditions for control gates by analyzing the flow patterns in the inlet and outlet of the connection tunnel and control gates between Huangsan tunnel,Qinling tunnel and the connection tunnel.Then the final running water levels of the control gate,connection tunnel and shaft tailrace tunnel at all conditions were verified through experiments and the design water levels of water supply,water pumping and power generation were determined.In addition,the changes of water level of the shaft tailrace tunnel under the conditions of sudden load rejection and increase were studied to ensure safety of the hydraulic constructions at special operating conditions.【Result】For water pumping,when the discharge from Huangsan tunnel was large（conditions 1,2 and 5）,the whole system worked well and the flow pattern was stable.When the discharge from Huangsan tunnel was small（conditions 3,4 and 6）,the water level should be increased by controlling the gate in the inlet chamber of Qinling tunnel to meet the designed pumping discharge.For water supply and power generation,the flow pattern was stable and the water level in the shaft tailrace tunnel was normal at most conditions.When the flow rate increased to the highest level (70 m3/s),the water level (548.10 m) in the shaft tailrace tunnel was higher than the highest designed water level (547.96 m) of the connecting tunnel.【Conclusion】The water level of the tail water pond should be kept at a level higher than 545.15 m in water pumping conditions.To insure the normal operation of power generation,the height of the tail water pond should be increased appropriately to maintain an open-channel flow. |
| Key words: Water Transmission from Han River to Wei River Sanhekou water conservancy hydraulic model test water transfer project flow pattern design water level |
