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Coal 722 1 by Abdela Seifu is a document available to read on EtoBox.
The paper reviews the mechanics of coal pillar behavior, focusing on the two independent components of coal strength: cohesive strength and frictional strength. It highlights the importance of understanding these components for effective pillar design, particularly in relation to reducing surface subsidence impacts. Laboratory testing demonstrates the variability of cohesive strength and the significant influence of frictional strength under confining pressures, which are crucial for assessing long-term sta
- Author
- Abdela Seifu
- Language
- EN