Damage characteristics and constitutive modeling of coal under real-time temperatures
Yongjiang Yu, Ning Liu, Guoning Zhang, Jiaming Liu, Jijie Wei · 2026
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Description
Yongjiang Yu and four colleagues study how heat damages coal in this 2026 engineering paper. The work matters for coalbed methane extraction. Pumping heat into a coal seam can free trapped gas, but it may also weaken the seam. The team squeezed coal samples while they were hot, using a high-temperature testing machine. Computer simulations tracked cracks forming inside the rock.
As temperature rose, the coal strained further before failing. Its strength and stiffness both fell. Cracks caused by heat itself were mostly tensile, pulling the rock apart. The failure style also shifted with heat. Cool samples split straight down, while hot samples failed in a mixed tearing pattern. The authors built a staged damage model from these results, giving engineers a tool to predict when heated seams might collapse.
Catalog record
| CREATOR | Yongjiang Yu, Ning Liu, Guoning Zhang, Jiaming Liu, Jijie Wei |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 54554 |
| LICENSE | CC_BY |
| RIGHTS | CC BY |
| SOURCE | PLOS |