Study on vibration characteristics of roadheader cutting pre-cracked hard rock

Abstract To address severe equipment vibration and large load fluctuations during hard-rock excavation, this study proposes mechanical pre-cracking as a preparatory treatment. A hard-rock model containing pre-cracked holes is developed using the discrete element method; the crack initiation and prop...

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Auteurs principaux:	Hongmei Liu, Faxu Li, Jingqiang He, Wenlong Wang, Haijian Zhang
Format:	Artigo
Langue:	Inglês
Publié:	Nature Portfolio 2026-01-01
Collection:	Scientific Reports
Sujets:	Hard rock boring Roadheader Mechanical pre-cracking DEM–MFBD two-way coupling Vibration characteristics
Accès en ligne:	https://doi.org/10.1038/s41598-026-37089-7
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