| It wants to not only ensure the safety of the project but also obtain the greatest comprehensive benefit in Hydropower projects,and the strategic point is the layout of the discharge structure.The high-speed flow problem will serious by the flow rate increasing, which directly affect the safety of discharge energy dissipation. It is a research on the trajectory energy dissipation risk and the scheme comparison in this paper. The main contents and results are drawn as follows:(1)First,the paper described the status of risk analysis and the trajectory energy dissipation,and then introduced the basic theory of risk,emphatically analyzed the characteristics and the inadequacies of several calculation methods for risk;Then presented several kinds of probability distribution of random sampling language instruction in Matlab.(2)It gives a method to calculate the risk of the trajectory energy dissipation that combined the Monte Carlo method and the Matlab software. The result of the risk calculation and the scheme comparison shows that it overcomes the disadvantage of large calculation workload by using the Monte Carlo method and the restriction of the computer development, and it greatly improves the computation efficiency and reduces the workload; And the results also verified the precision and efficiency of the proposed method.(3) After comprehensive consideration,the scheme comparison of trajectory energy dissipation is selected by the multiple-objective decision that combined the IAHP and the Matlab software which could reduce the workload of decisions,and the process is easy to master.The feasibility of it is verified by the calculation.(4) Analyzing and calculating the trajectory energy dissipation risk and the scheme comparison on the spillway of Xinjiang Daxigou reservoir,the results combined with the sensitivity analysis presented that the discharge,the scour coefficient and the flood process significantly influenced on the risk of the trajectory energy dissipation. |
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