Multi-stage diversion modes for large flow dividing gates in water transportation channel

作者：Wang Kai^*; Zhang Cheng; Wang Guangqian; Fu Xudong

来源：Journal of Basic Science and Engineering, 2009, 17(2): 161-171.

• Flow dividing gates
• Hydraulic response
• Multi-stage operations
• One dimensions
• Operation modes
• Research objects
• South-North Water Transfer Project
• Water diversion under multi-stage mode
• Water surface profiles
• Water transfers
• Water transportations

Taking the typical dividing gates of South-North Water Transfer Midline Project as a research object, this paper calculates and analyzes the operation modes of different flow dividing gates with one dimension unsteady flow model. The corresponding hydraulic response, including the changing magnitude, velocity, and the influencing range of water level is studied, the correlation of the water diversion rate and the water surface profile is established, and the multi-stage operation mode of water diversion is proposed. Take the Gate Xiheishan, whose designed water diversion discharge is half of the designed discharge of the channel, as an example, it is recommended that, in 1 hour, the increment of dividing flow should be less than 16 m3/s by once and 20 m3/s by twice. Nevertheless, the decreasing velocity of water level would be better controlled and the influence to channel would be less if the water diversion operation by second time is accomplished in 2 hours.

• 出版日期2009
• 单位清华大学