Block stone shape and broken accumulation body discrete element three-dimensional modeling method

Abstract

The invention provides a block stone shape and broken accumulation body discrete element three-dimensional modeling method. The method comprises the following steps: feature points are set on the surface of a block stone; the dimension stone is photographed, and geometric information of the dimension stone is extracted; a non-block stone part in the picture is subjected to mask processing and then imported into three-dimensional live-action modeling software, spatial position information matching of all surfaces of the block stone is obtained, noise point clouds are removed, a block stone three-dimensional initial model is generated, and a block stone grid model database is established; redundant block stone grids in the block stone three-dimensional initial model are removed, and mesoscopic parameter calibration is performed to obtain soil particle parameters and block stone parameters; block stone putting is performed on the block stone grid models in the block stone grid model database by using a stone content control program based on particle flow analysis software to generate a block stone numerical model; an accumulation body numerical model is generated in particle flow analysis software; and accumulation body parameter calibration is performed on the accumulation body numerical model to obtain an accumulation body discrete element three-dimensional model.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, in particular to a discrete element three-dimensional modeling method based on the shape of a block and a broken accumulation body. Background technique [0002] As a high-quality filler, accumulation is widely used in engineering fields such as roads, airports, and water conservancy. However, the origin and structure of accumulations are complex, and their mechanical properties need to be studied when they are applied in engineering. Compared with the laboratory test and field test methods, the numerical simulation method based on computer-aided modeling is used to study the mechanical properties of the accumulation body, which has the advantages of low cost and high efficiency. Among various numerical simulation methods, the discrete element numerical simulation method can be studied from the mesoscopic scale, and has become one of the preferred methods for studying the mechan...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the existing technology, the present invention proposes a three-dimensional modeling method based on the shape of the rock and the broken accumulation body discrete element to solve the problem that there is a certain error between the three-dimensional model of the accumulation body established in the prior art and the actual situation of the accumulation body , cannot reflect the crushing of the accumulation body, and will affect the analysis of the mechanical properties of the accumulation body.

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