Article Details

Abstract

This paper takes the working face in a certain coal mine as the research background, reveals the energy dissipation mechanism in the fragmentation process of coal and rock masses through theoretical analysis, and systematically explores the influencing factors of rock bursts and the evaluation method of rock burst tendency. Based on this, it proposes impact prevention measures for narrow coal pillars, designs the coal pillar retention scheme by establishing the elastic-plastic model of coal pillars, optimizes the scheme subsequently and determines the reasonable width of the coal pillars simultaneously. By using FLAC 3D numerical simulation, it analyzes the stress distribution characteristics of coal pillars with different widths and conducts an in-depth discussion on the stability of the roadway.

Keywords

energy mechanism; impact prevention measure; narrow coal pillar

References

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Funding

Shandong Huayu Institute of Technology Science and Technology Project (2022KJ12)

About the authors

Liu Guofang (1993-), male, Han ethnicity, from Cangzhou, Hebei, is an engineer with a master's degree. His research interests include intelligent information and processing, deep learning, and intelligent mining.