Research on bending-slip rib spalling and rib stability of extra-thick hard coal wall
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DOI: 10.1038/s41598-025-09180-y
Abstract: In response to the frequent occurrence of coal face spalling affecting the working face production during the mining of extra-thick hard coal seams, this study investigates the characteristics of typical hard coal face damage. Coal… read more here.
Keywords: coal face; extra thick; coal; thick hard ... See more keywords
Mechanism of Support Optimization and Confined Blasting of Thick and Hard Rock with a Wedge-Structure Immediate Roof: A Case Study
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DOI: 10.1155/2021/5586310
Abstract: Based on the occurrence conditions of a thick and hard main roof and wedge-structure immediate roof in the Zhuxianzhuang Coal Mine, the fracture characteristics and instability migration law of a thick and hard roof (THR)… read more here.
Keywords: structure immediate; thick hard; confined blasting; immediate roof ... See more keywords
Evolution of roof treatment processes from blasting to hydraulic fracturing to prevent rockburst in thick-hard roof coal mines in Xinjiang, China
Sign Up to like & getrecommendations! Published in 2025 at "Frontiers in Earth Science"
DOI: 10.3389/feart.2025.1714727
Abstract: Rockburst prevention poses a major challenge in coal mining, with thick and hard roof strata being the primary cause of rockbursts. To analyze the feasibility and effectiveness of using hydraulic fracturing as an alternative to… read more here.
Keywords: roof; coal; thick hard; roof strata ... See more keywords