中文摘要：

对穿黄工程的运行控制问题进行了分析,提出了穿黄工程的控制蓄量运行方案,研究了其具体实现方法。提出采用变闸前目标水位的方式实现控制蓄量运行,比较研究了三种确定流量-闸前目标水位关系的方法,推荐采用＂流量-渠池蓄量＂线性关系反推各流量下的闸前目标水位的方法。研究了控制蓄量-闸前常水位联合运行控制问题,提出了包含前馈、反馈和解耦环节的分布式集中控制方案。在包含穿黄工程在内的中线干渠约120公里渠道上运行了数值仿真,测试了计划分水、非计划分水和大幅度流量变化工况。结果表明,渠道成功实现了控制蓄量-闸前常水位联合运行,所设计的闸门控制算法能够有效消除计划分水、非计划分水及大幅度流量变化带来的扰动,且穿黄隧洞入口维持了较大的淹没水深,整个控制过程水位流量变化平稳,水位波动符合安全限幅规定。

英文摘要：

By analyzing the operation problems of the canal crossing Yellow River,methods of controlled-storage scheme of the canal and their implementation are studied.A method of variable set-point gate control is put forward for the implementation,and through a comparison of three methods for set-point calculation an inverse method based on a linear relationship between the flow rate and the canal pool storage is recommended.A joint operation mode of the controlled-storage scheme combined with a scheme of constant downstream depth is studied,and a centralized-distributed scheme of gate control by three algorithms of feedback control,feed forward control and decoupling is proposed.Three cases of scheduled withdraw,unscheduled withdraw and large amount of discharge decline are tested with numerical simulations of the 120km long main canal of the south-to-north water transfer project including the crossing canal.The results show that the joint operation mode can be successfully implemented,that the adopted gate control schemes greatly reduce the impact of discharge disturbances in all the three cases,and that enough submergence is maintained at the entrance of the crossing canal.During the controlled operation,the changes in water level and flow rate are quite mild and stable and the water level fluctuations are within the range of safety requirement.