| 2 | A STUDY ON SEDIMENT PROBLEMS INTHE GONGZUI RESERVOIR显示文摘The Gongzui reservoir on the Daduhe Rivet, controlling 98% of the entire river basin. is a major power project in Sichuan Province. Since 1971, the reservoir has been seriously silted up and lost more than 60% of its total storage capacity and 14% of its regulation storage. The sedimentation in the reservoir has seriously influenced the power output and generators in recent years, and may cause some flood disasters in the upstream of the reservoir Especially, the deposition of coarse particles will endanger the security of Shaping section of Cheng-Kun railway, located at the upstream of this reservoir. The sediment problem is a key challenge for the reservoir management A systematic research is needed to solve the problems. This paper presents recent observation data details of sediment problems and possible sediment disasters in the future. Variation process of the typical cross section from 1977 to 1997, average particle distribution of bed material along the reservoir, the ratio between input and output sediment load, bed load sediment deposition, fluvial process of the delta, and their effects on the regulated storage and the floods in the upstream are discussed in this paper. Three possible programs and their functions for reducing and controlling sedimentation are also proposed. | LIU Xingnian HE Yueping ZHANG Xiangjing QIN Youzhong CAO Shuyou (State Key Hydraulics Laboratory of High Speed Flows,Sichun Union University,Chengdu 610065,P.R.China) (Gongzui Water Power Station,Sichuan,P.R China (Chengdu Staff College of Water Power) | 1999 | International Journal of Sediment Research1999，14，2： | 0 |
| 3 | EXPERIMENTAL INVESTIGATION ON STEADY THREE DIMENSIONAL VORTEX FLOW FIELD THROUGH HORIZONTAL ORIFICES显示文摘A steady,axisymmetric vortex at an entrance of horizontal orifice,with an air-core,was formed within a special apparatus.The tangential,radial and axial velocities and theirfluctuation strengths were measured in detail.The results were given in terms of formulas orcurves.It shows a clear picture of vortex flow-field. | Ru Shu-xun He Xue-min Dai Guang-qing State Key Hydraulics Laboratory of High Speed Flow,Chengdu Univ,of Science and Technology,Chengdu 610065,P.R.China | 1993 | Journal of Hydrodynamics1993，5，4： | 0 |
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