Box covering method-based slope assembly type discrete element model generating method

Abstract

The present invention discloses a box covering method-based slope assembly type discrete element model generating method. According to the method, an assembly range is designed into a regular area and is adopted as an assembly component; small cuboid units are generated based on an outer slope range according to a certain size; blocks are merged through using a box covering method, so that the number of the total blocks of a model can be minimum; and therefore, the established model can not only maintain the accuracy of surface terrain, but also can minimize the internal blocks, the construction accuracy of follow-up internal structures can be ensured, and the construction of the discrete element model can be greatly facilitated; and when the block discrete element model is constructed, a topological method is utilized to cut a tunnel, since few blocks are involved in topological analysis, virtual joints tend to generate, and therefore, the success rate of the shape cutting of the tunnel is very high. The modeling method is applicable not only to the construction of a geotechnical model, but also applicable to the construction of models in other fields such as the geological field. The method has the advantages of wide application range and high controllability. The model constructed by the method is more accurate.

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 generating an assembled discrete element model of a slope based on a box covering method. Background technique [0002] The block discrete element numerical model is constructed from blocks. In the process of building the slope model, the terrain of the slope needs to be considered, so the surface needs to be divided into a certain number of small areas. The more small areas, the more accurate the terrain. At the same time, if it is necessary to construct underground caverns, engineering structures, etc. in the slope rock mass, it is required to use as few blocks as possible, and the two are precisely contradictory. Therefore, it is necessary for those skilled in the art to provide a slope assembly discrete element model generation method based on the box covering method that can control the terrain accuracy and fac...

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Problems solved by technology

[0003] In the process of building discrete element numerical models for blocks, on the one hand, it is necessary to pay attention to local control of terrain accuracy; on the other hand, there are a large number of small blocks, which makes it difficult to construct underground caverns and engineering structures in slope rock mass. , the accuracy is also very imprecise, the present invention provides a slope assembly discrete element model based on the box covering method that can not only maintain the accuracy of the surface terrain, but also minimize the internal blocks and ensure the subsequent internal structure construction accuracy generation method

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