Da Xingchuan Hydropower Computation Hydraulic Model Test Research

Da Xingchuan hydropower station is located in the second songhua river middle reaches, is located in the town of antu county, jilin province liangjiang daxing sichuan village, a group of about 2 km upstream, is a predominantly hydroelectric project, is now the second songhua river the most has the development potential of the hub project.Spillway as a subsystem in the hydropower station construction engineering, play a key role. Spillway design is reasonable, is one of the main factors for the normal operation of hydropower station, it directly influence the operation of hydropower station, safety, economy and risks and other key issues. So in engineering practice, an urgent need to optimize the flood discharge building design. The subject is of important engineering value, at the same time, for the design of similar engineering also has certain reference value.This paper based on does indeed, sichuan hydropower station hydraulic model test, according to the theoretical calculation method preliminarily determines the computation of cross section structure, to test and verify the rationality of the theoretical calculation and to further optimize its through testing computation under all levels of the flood frequency flow discharge capacity, test computation flow downstream river bed and velocity distribution, the computation of the energy dissipation type test and optimization.Test results show that:various kinds of flood frequency flow, model test of discharge quantity are calculated is greater than the discharge of, meet the requirements; Weir flow on smooth, weir surface curve design is reasonable. But under the condition of different discharge quantity, drift phenomena of the downstream all appear to the right. Through to modify the original plan and test verification, no reflow and drift downstream.First chapter expounds the hydraulic physical model research progress at home and abroad, the significance of this paper is to through the basic theoretical calculation results and the daxing sichuan hydropower station does the comparison of results of hydraulic model test, the original scheme is optimized design.The second chapter expatiates on the study of hydraulic model test method.The third chapter introduces the general situation of the engineering daxing sichuan hydropower station, the project drainage layout, shape of the building and the way of energy dissipation, etc.The fourth chapter mainly discusses the through the hydraulic model test, measurement and analysis of the discharge capacity of all kinds of working conditions, stilling basin energy dissipation, the downstream river flow, flow, etc., according to data comparison, find problems or to deal with the phenomenon of the actual, put forward revision plans and carries on the optimization design of hydraulic physical model, finally it is concluded that the recommended scheme. Daxing sichuan hydropower station are verified through the hydraulic model test research, the design of the computation, guarantees safe operation of hydropower station in the future.Fifth chapter hope daxing sichuan hydropower computation hydraulic model test can provide help for similar projects.