Numerical simulation method for dredging dredged sediment filling in open water area

Abstract

The invention relates to a numerical simulation method for dredging dredged sediment filling in open water area, which adopts numerical simulation method and uses mike21 software to carry out simulation analysis and calculation, and adopts finite volume method based on element center to carry out discrete solution for two-dimensional shallow water control equation in numerical simulation. The spatial discretization of the numerical simulation model is based on the finite volume method, dividing the computing region into grids, the overlapping entities are generated into discrete grids by solving the governing equations, using the triangular meshes provided by Mike 21 is used for computing, in mike21 water conservancy analysis software, a two-dimensional hydrodynamic model is established, and then the sediment transport module is used to establish the model of the entire external environment. The parameters of external environment factors are inputted for simulation analysis, and the target output is obtained. By comparing the simulation results with examples, the accuracy of numerical simulation calculation in dredging and hydraulic fill engineering is verified.

Description

technical field [0001] The invention relates to the technical field of engineering construction, in particular to a numerical simulation method for dredging dredging and filling sediment in open waters. Background technique [0002] With the continuous development and progress of society, environmental issues are more and more concerned by the world. As one of the important components in the field of engineering construction in my country, coastal dredging and reclamation construction has an impact on the environment that cannot be underestimated. Therefore, strengthening the dredging Construction process control and reduction of impact on the environment are particularly important for the current dredging and reclamation industry. How to use effective means and tools to reduce or avoid the environmental impact of dredging and reclamation land is the goal of the industry's joint efforts. [0003] The construction process of dredging and filling is relatively simple. During t...

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Problems solved by technology

[0003] The construction process of dredging and filling is relatively simple. During the process of excavation, transportation and blowing, the excavation and transportation can be effectively controlled by construction equipment. However, during the construction of dredging and filling, it is impossible to understand the influence of the flow field formed by dredging and filling on the cofferdam, and it is also difficult to It is impossible to determine the final flow direction and accumulation shape of the dredged fill sediment. The existing methods can only change the general direction of the sediment by changing the position of the pipeline, which is largely a blank in management. Can be adjusted afterwards

[0004] The dredging construction industry has always lagged behind other industries in the application and control of new technologies. In China, only large-scale research institutions or school research teams have professional strength in the analysis of hydrodynamics and sediment movement. In the actual undertaking of projects, regardless of time or In terms of economic costs, it is impossible to entrust relevant institutions to conduct special research and analysis in a timely manner

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