Control effect of thickness ratio of soft and hard composite coal seam on unloading failure

In the engineering practices of coal seam mining and gas drainage, the unloading damage of soft and hard composite coal seam is a common problem faced by surrounding rock support and coal seam enhancement. In order to explore the mechanical properties of the composite coal seam during the unloading...

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Bibliographic Details

Published in:	Meikuang Anquan
Main Author:	LIU Hongyong, LI Zhen, YANG Jianmin, LI Longfei, ZHENG Chunshan
Format:	Article
Language:	Chinese
Published:	Editorial Office of Safety in Coal Mines 2023-06-01
Subjects:	soft-hard composite coal seam pfc numerical simulation coal seam unloading acoustic emission thickness ratio
Online Access:	https://www.mkaqzz.com/cn/article/id/8434