3DEC discrete element numerical model modeling method based on Fortran language

Abstract

The invention discloses a Fortran language-based 3DEC discrete element numerical model modeling method. The method comprises steps of firstly obtaining a three-dimensional contour topographic map of a3DEC discrete element numerical model region, then performing interpolation and rasterization processing on the topographic map to obtain discrete point coordinate data arranged at regular intervals,and then writing and compiling a modeling code based on a Fortran language to obtain a three-dimensional contour map of the 3DEC discrete element numerical model region; rasterizing the discrete point coordinate data to generate a 3DEC discrete element numerical model command stream, and finally reading the model command stream by adopting a 3DEC program to run to generate a 3DEC discrete elementnumerical model. The method is efficient in calculation, simple in operation, high in flexibility, good in convenience and capable of conducting high-precision, multi-rock-stratum and variable-block-unit-size three-dimensional discrete element model construction on a research area with the complex terrain and the large range.

Description

technical field [0001] The invention relates to the research field of numerical simulation of geotechnical engineering, in particular to a 3DEC discrete element numerical model modeling method based on Fortran language. Background technique [0002] 3DEC is the world's first advanced three-dimensional analysis program developed and commercialized using the discrete element method as the basic theory. It is especially suitable for the study of mechanical properties and failure characteristics of discontinuous media such as jointed rock mass. be widely used. The rock mass is composed of rock blocks and structural planes. In the numerical simulation of 3DEC program, the rock mass is regarded as a discrete aggregate of media, and the rock mass and structural planes are defined as two basic units. On the basis of the continuum mechanics method, the introduction The concept of contact (such as structural surface), regards contact as the boundary between blocks (such as complete r...

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Problems solved by technology

Patent No. CN107562833B interpolates surface surface data based on MATLAB software, and establishes a three-dimensional numerical model through triangular prism block units, which only considers surface modeling and cannot realize the construction of multi-rock layer models

The paper "3DEC Rapid Modeling of Complex Geological Bodies" uses Surfer software and Fish language to realize 3DEC rapid modeling of geological bodies. It is difficult to popularize and use

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