南水北调中线干渠闸前变水位运行方式探讨  

Operation of allowing fluctuating of water level in the Middle Route of the South-to-North Water Transfer Channel

作　　者：方神光[1] 吴保生[1] 

机构地区：[1]清华大学水沙科学与水利水电工程国家重点实验室,北京100084

出　　处：《水动力学研究与进展（A辑）》2007年第5期633-639,共7页Chinese Journal of Hydrodynamics

基　　金：中国博士后科学基金资助项目(20060390078);国家自然科学创新研究群体科学基金资助项目(50221903)

摘　　要：针对天津分水口流量变化,应用两种闸门调度方式且将闸前水位控制在不同变化幅度内时,采用建立的南水北调中线电子渠道模型模拟计算了干渠中的水流过渡过程。结果显示,闸前水位自由波动时,由于动用了较多的调蓄库容,会导致水位波动幅度过大而影响干渠的安全平稳运行。对闸前水位变幅限制太小或阻止闸前水位变化时,会导致干渠水位长时间波动并影响到进入惠南庄前池的流量。考虑到渠道安全、缩减渠道水力过渡时间和尽量减小对末端前池水位的影响,初步推荐闸前水位变化幅度在±0.15 m范围内波动较为适宜。Hydraulic transitional processes in the Channel when using two gate operation modes and different variation ranges of water levels at the upstream of control gates to answer flux variation of Tianjin Diversion were simulated on the South-to-North Electronic Channel. Results show that secure and steady operation of the Channel will be affected under free fluctuation of the water levels at the upstream of control gates because of using too much deposited volume. Too little ranges of the water levels or stopping fluctuation completely will lead to long time transitional processes and variation of flux entering into Huinanzhuang pool. Considering security transitional time and affection of flux entering into the pool are taken into account and the fluctuation range, ±0.15 m of the water levels is recommended primarily.

关 键 词：南水北调中线工程 非恒定流 数学模型 闸门调度 水位变幅 

分 类 号：TV133.2[水利工程—水力学及河流动力学]