Surrounding rock stability and engineering practice of the 52607 working face approaching a fault-protected coal pillar
Zenghui Liu, Minjun Chen, Feiyue Liu · 2026
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Description
Zenghui Liu, Minjun Chen, and Feiyue Liu study in 2026 how rock around a coal mine roadway behaves as digging nears a fault-protected coal pillar. The pillar is a block of coal left unmined to guard against the fault, and its width decides how much stress and fracture reach the roadway. Horizontal ground stress dominates the study area.
Combining stress measurement, theory, 3D simulation, and field monitoring, the team tested pillar widths of 10, 20, 30, and 40 meters. Narrow pillars of 10 to 20 meters let fault disturbance swell roof sag, wall squeeze, and broken zones. Wider pillars calmed the response. Existing bolt-and-cable supports controlled deformation well in monitoring.
Catalog record
| CREATOR | Zenghui Liu, Minjun Chen, Feiyue Liu |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 79683 |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |