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Geotechnical and Geological Engineering

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09-01-2019 | Original Paper

Numerical Study of Damage Evolution Law of Coal Mine Roadway by Particle Flow Code (PFC) Model

Authors: Wan-rong Liu, Xiao Wang, Chuan-ming Li

Published in: Geotechnical and Geological Engineering | Issue 4/2019

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Abstract

Deformation and destruction of roadway surrounding rock is one of the main causes of coal mine accidents. In this paper, the horseshoe-shaped roadway model was established by particle flow code firstly and then analyzed the roadway damage process through the contact force chain, deformation displacement and distribution of micro-cracks. The research result show that the parallel bond model can well simulate the damage process of the coal mine roadway. The surrounding rock can be divided into four zones from the roadway side to the deep rock mass. The micro-contact force chain is the force transmission path and the principal stress is the macroscopic reflection of the micro-contact force chain.

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Title: Numerical Study of Damage Evolution Law of Coal Mine Roadway by Particle Flow Code (PFC) Model
Authors: Wan-rong Liu
Xiao Wang
Chuan-ming Li
Publication date: 09-01-2019
Publisher: Springer International Publishing
Published in: Geotechnical and Geological Engineering / Issue 4/2019
Print ISSN: 0960-3182
Electronic ISSN: 1573-1529
DOI: https://doi.org/10.1007/s10706-019-00803-6

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