Study On Arrange And Energy Dissipation Problem Of Narrow Gap Bucket-stilling Box In Mid-low Head Sluice-dam Project

Sluice-Dam in the low-head project is a broader scope, there are many factors affecting the complexity of systems engineering, project to project involving regional rivers planning, economic indicators river topography, the areas of traffic information, the general also a medium-sized hub hydraulic model should be adopted by the demonstration test, and optimize hub of the building layout and various sports hydraulic characteristics. Therefore the optimal layout project appears to be particularly important. This paper summarized the general layout of the general principles, and expounding on the riverbed of power plants, runoff-power station, a hub on the river bend layout; hub cited three examples to illustrate layout works. Finally made several prevent the return of the general layout elements.Consumers can scour prevention is the key water conservancy and hydropower project one of the technical problems, the energy dissipation is the main aspects of the problem. Gate Dam in the low head hub, the discharged water still has high velocity, in particular the front sluiceway narrow width than the original riverbed larger, making the relative concentration of water, single-wide flow especially in the case of large, high water discharged kinetic energy. Such tremendous energy to disperse if not resolved, will be scouring the riverbed downstream, the river banks, and discharged the water flow downstream and the convergence process, the flow will have a bad state, such as the return of waves and currents negotiations, so as to seriously affect gate Dam discharge the normal operation of the building. This paper Guangxi Red Water River Bridge Gong Power Station energy dissipation problems starting point, the contraction of the study of energy dissipation bucket and the flow of the form of joint energy dissipation. Red Water River Bridge Low Dam Hydropower Station Gong made the contraction of the energy dissipation in the use of the Low Dam stilling pond bucket mixed energy dissipation attempt by hydraulic model test results show that the test also made significant energy dissipation effect. Test found that the size of Narrow and geometric parameters on the energy dissipation of the effect of a greater impact, particularly slot width ratio and Narrow shrinkage ratio, through various programmes comparison test, the test that the optimal conditions Narrow slot width ratio and the ratio of contraction, believe that the results of similar projects can provide valuable reference design significance.