By summarizing model test achievements of the intake and drainage project for powerplants along the Yangtze river, we presented the main sediment issues which should be considered for the intake and drainage project the river regime of intake and discharge segment, the variation of riverbed elevation at the head of intake, sediment concentration at the intake, non-depositing critical flow velocity, and incipient velocity. To ensure the safe and economical operation of powerplant, we proposed corresponding engineering measures to provide reference for the design of similar projects. These measures include selecting a proper location for drainage project according to the river regime, adjusting the elevation of drainage outlet based on model test results, adopting proper measures of water diversion, optimizing operation mode, and proposing critical non-silting flow velocity and incipient velocity of sediment in the pipe.
Key words
hydraulic engineering /
powerplant /
water intake and drainage project /
sediment problems /
non-silting critical flow velocity /
incipient velocity of sediment
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References
[1] 张瑞瑾. 河流泥沙动力学(第2版)[M]. 北京:中国水利水电出版社,1998. (ZHANG Rui-jin. River Sediment Dynamics(2nd Edition)[M]. Beijing: China Water Power Press, 1998. (in Chinese))
[2] 侯佩瑾,赵克梅. 高压输水管道泥沙淤积的试验研究[J]. 山西水利科技,2002,8(3):35-38. (HOU Pei-jin, ZHAO Ke-mei. An Experimental Study on Sediment Deposit in High Pressure Water Conveyance Pipe[J]. Shanxi Hydrotechnics, 2002,8(3):35-38.(in Chinese))
[3] 张英普,何武全,蔡明科,等. 关于浑水管道输水系统临界不淤流速的试验研究[J]. 灌溉排水学报,2004,23(6):34-36. (ZHANG Ying-pu,HE Wu-quan,CAI Ming-ke,et al. Experimental Study on Non-depositing Critical Velocity of Muddy Water Delivery in Pipe line System[J]. Journal of Irrigation and Drainage,2004,23(6):34-36.(in Chinese))
[4] 段志科,李慧梅. 火电厂取水工程中泥沙问题及试验研究[J]. 水利水电技术,1997,28(7):29-32. (DUAN Zhi-ke, LI Hui-mei. Experimenta1 Research on Sediment Problems in Intake Work in Thermal Power Plant[J]. Science and Technology of Water Resources,1997,28(7):29-32.(in Chinese))
[5] 中国水利学会泥沙专业委员会.泥沙手册[M].北京:中国环境科学出版社,1992.(Sediment Professional Committee of Chinese Hydraulic Engineering Society. Handbook of Sedimentation Engineering[M]. Beijing:China Environmental Science Press, 1992.(in Chinese))
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