Three-dimensional numerical simulation method for hydraulic characteristics of uranium tailing pond flood drainage system

Abstract

The invention discloses a three-dimensional numerical simulation method for hydraulic characteristics of a uranium tailing pond flood drainage system. The method comprises the following steps: collecting, analyzing and checking basic data of the uranium tailing pond flood drainage system; selecting suitable numerical simulation software; establishing a three-dimensional numerical model of the tailings pond flood drainage system and dividing grids according to regions; boundary conditions of an inlet and an outlet of the uranium tailing pond flood drainage system are determined; carrying out numerical simulation by adopting a model subjected to experimental research, comparing with a model test result, and verifying, calibrating and optimizing a numerical model according to a comparison result; performing three-dimensional numerical simulation on the uranium tailing pond flood drainage system; and related data of the drainage capacity, the wall surface pressure, the water flow velocity,the water depth and the flow state of the uranium tailing pond flood drainage system are given. By establishing the three-dimensional numerical model of the uranium tailing pond flood drainage system, the scale effect of a model test does not need to be considered, the limitation of a theoretical formula method in the aspects of arrangement mode and structural size of the flood drainage system issolved, and the method is low in cost, short in period and high in simulation precision.

Description

technical field [0001] The invention relates to the technical field of uranium tailings pond safety, in particular to a three-dimensional numerical simulation method for the hydraulic characteristics of the flood discharge system of the uranium tailings pond. Background technique [0002] The flood discharge system is an important part of the uranium tailings pond. Generally, it has the characteristics of single project, inconvenient comprehensive utilization, small catchment area, small discharge probability, and short flood discharge time, but the flood discharge flow rate is relatively high, the flood discharge standard is high, and it is not easy draw attention to other features. Once the flood drainage system fails and the flood discharge is not smooth, the threat to the tailings pond is very great, and it may even have catastrophic consequences. According to statistics, among the major accidents of tailings ponds at home and abroad, the accidents caused by overflow to...

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Problems solved by technology

[0004] The invention proposes a three-dimensional numerical simulation method for the hydraulic characteristics of the flood discharge system of the uranium tailings pond, which solves the problem that the theoretical formula method in the prior art is simple, but there are certain limitations in determining the layout and structural size of the structure only by using the theoretical analysis method; The model test has been tested in practice and has a high degree of accuracy, but the cost of the model test is high, the test period is long, and due to the scale effect, many problems that are concerned in engineering cannot be accurately studied by using the model test

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