Spatial Variability of Elastic Modulus of Rock Mass and Response Analysis of Roadway Deformation

Xi Han; Xianjun Han

doi:10.54691/fse.v3i3.4501

Authors

Xi Han
Xianjun Han

DOI:

https://doi.org/10.54691/fse.v3i3.4501

Keywords:

Roadway Surrounding Rock; Spatial Variability; Random Field; Abaqus; Secondary Development.

Abstract

Based on the viewpoint that the rock and soil are not homogeneous materials, the spatial variability of its mechanical parameters should be considered, and the influence of the spatial variability of the elastic modulus of the rock mass on the roadway deformation should be considered. Taking a coal mine roadway as the background, the spatial variability of elastic modulus of rock mass is characterized by means of random field theory. The random field data is simulated by Matlab software and the random field is discretized. The random field data is imported into each grid in the Abaqus model through Python language, and then the numerical model is operated in batches to obtain the displacement data of key points of the roadway and surrounding rock, which is consistent with the actual engineering. The displacement data is analyzed and processed based on the reliability method, and the contour map of the roadway surrounding rock reliability index is calculated. Through the analysis, it can be concluded that the simulation accuracy of this method meets the engineering requirements, and the isoline distribution of the reliability index conforms to the engineering practice, which is a good way to analyze the reliability of the roadway structure.

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