Quantitative mechanism of roadway rockbursts in deep extra-thick coal seams: Theory and case histories

• Published in: Tunnelling and underground space technology Vol. 111; p. 103861
• Main Authors: Dai, Lianpeng, Pan, Yishan, Li, Zhonghua, Wang, Aiwen, Xiao, Yonghui, Liu, Feiyu, Shi, Tianwei, Zheng, Wenhong
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.05.2021; Elsevier BV
• Subjects: Case histories; Coal; Coal mines; Crack initiation; Critical index; Extra-thick coal seam; Mechanical properties; Mining; Quantitative mechanism; Roads; Roadway rockburst; Rock masses; Rockbursts; Rocks; Seismic disturbance; Seismic engineering; Seismic stability; Softening; Stability criteria; Traffic accidents & safety; China; Quantitative mechanism; Roadway rockburst; Case histories; Critical index; Seismic disturbance; Extra-thick coal seam

•Critical indexes of roadway rockburst initiation and their formulas were proposed.•Controlling factors of roadway fracture occurrence and rockburst were clarified.•Quantitative description of rockburst induced by mine seismicity was achieved. Rockbursts are globally recognized as one of most severe...