Study on dynamic disaster mechanisms of thick hard roof induced by hydraulic fracturing in surface vertical wellShang, X; Zhu, Sitao; Jiang, Fuxing; Liu, Jinhai; Li, Jiajie; Hitch, Michael William; Liu, Hongliang; Tang, Shibin; Zhu, ChunMinerals2022 / art. 1537, 22 p. : ill https://doi.org/10.3390/min12121537