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A Substitutive Step-by-step Refining Slope Block Discrete Element Numerical Model Construction Method

A numerical model and construction method technology, applied in design optimization/simulation, special data processing application, soil material testing, etc.

Active Publication Date: 2021-09-14
HOHAI UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

The grids divided in the block still obey the continuous numerical simulation method, and if the failure process of the rock and soil mass is to be simulated by the discrete element method, it is necessary to divide the block into small blocks. Block cutting, which is easy to cause deformation and is significantly affected by joint cutting

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  • A Substitutive Step-by-step Refining Slope Block Discrete Element Numerical Model Construction Method
  • A Substitutive Step-by-step Refining Slope Block Discrete Element Numerical Model Construction Method
  • A Substitutive Step-by-step Refining Slope Block Discrete Element Numerical Model Construction Method

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Embodiment Construction

[0025] The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.

[0026] Such as Figure 1 to Figure 7 As shown, an alternative progressive refinement method for discrete element numerical model of slope block, including the following steps:

[0027] (1) Establish the initial landslide model, determine the landslide surface and landslide bottom boundary of the landslide initial model according to the experimental objects, determine the surface range and elevation before the landslide, judge the landslide bottom boundary and obtain its range and elevation. According to the points where the elevation changes after the landslide are all points inside the landslide body, the boundary of the landslide body is the junction of the points where the elevation changes and the points where the elevation does not chan...

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Abstract

The invention discloses a method for constructing a discrete element numerical model of a substitutive progressively refined slope block, comprising the following steps: (1) establishing an initial model of a landslide, determining the boundary between the upper surface and the bottom surface of the initial model of the landslide according to the experimental object, and targeting the experimental The object is to determine the boundary of the landslide body and calculate the parameters; (2) divide the initial model of the landslide into area 1, area 3, area 2 and area 4; (3) form area 1, area 2, area 3 and area 4 into a triangular prism block; (4) carry out tetrahedral Delaunay division to each block generated in area 4 in step (3); (5) for the landslide body, i.e. area 4, according to the divided tetrahedral mesh, each original triangular prism The blocks are sequentially transformed into tetrahedral blocks to reflect the failure process. The invention can more realistically and reliably simulate the landslide process.

Description

technical field [0001] The invention belongs to the technical field of numerical analysis of geotechnical engineering, and in particular relates to a method for constructing a discrete element numerical model of a substitutive stepwise thinning slope block. Background technique [0002] In the block discrete element method, the regular polyhedral block is the most basic unit of modeling, and these blocks can be divided into discrete grids, in which only the contact surfaces between the blocks can be separated and separated. However, in practice, it is usually desirable to use a denser grid for the area of ​​interest, and use a larger block or grid for the grid far away from the area of ​​interest. The grids divided in the block still obey the continuous numerical simulation method, and if the failure process of the rock and soil mass is to be simulated by the discrete element method, it is necessary to divide the block into small blocks. Block cutting, which is easy to caus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G01N33/24
CPCG01N33/24G06F30/20
Inventor 石崇杨俊雄张成辉刘军陈晓张一平戴薇杨文坤金成刘苏乐
Owner HOHAI UNIV