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March 7, 2026Scientific ReportsOpen Access

Study on the mining stress field distribution law beneath isolated coal pillar in close coal seam and reasonable location of the roadway

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Authors

SSShihai ShuWWWeijun WangCLChang Liu

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Overview

Demonstrates optimal roadway positioning to manage stress distribution in coal mining, highlighting safety improvements.

Key Points

  • Investigate the stress evolution in the floor of coal seams influenced by upper coal seam mining and isolated coal pillars.
  • Theoretical analysis of stress distribution
  • Numerical simulation using FLAC3D
  • Field observations to validate findings
  • Analysis of deviatoric stress tensor
  • Identification of roadway layout zones based on stress characteristics
  • Stress propagation beneath the isolated coal pillar shows gradual attenuation
  • Stress distribution transitions from bimodal to unimodal pattern
  • Optimal roadway location identified beneath the isolated coal pillar
  • Field tests confirm that this placement maintains acceptable rock deformation
  • Proposed zoning method enhances safety and economic benefits in roadway layout

Cite This Study

Shu et al. (2026) studied this question.

synapsesocial.com/papers/69abc1d75af8044f7a4ead28https://doi.org/10.1038/s41598-026-40452-3
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