Engineering
3 years ago

New Study Reveals Impact of Mining on Roof Stability in Coal Seams

Advances in Materials Science and Engineering
Study on Evolution Characteristics of Regenerated Roof Structure in Downward Mining of Bifurcated Coal Seam
Hu Ru, Jiwen Wu, Wenbao Shi, Zhai Xiaorong, Kai Huang

Paper Summary

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The study looked at how the roof structure changes when mining a bifurcated coal seam downwards. They studied a coal mine in China and found that mining in the upper seam causes the roof to cave and form fracture zones. The depth of these zones varies based on the spacing between coal seams. They identified three types of roof structures and evaluated their stability. The research helps determine how to control roof collapses in bifurcated coal seam mining.