Investigation on breakage and collapse characteristics of hard and thick roof during coal excavation subject to hydraulic fracturing

• Published in: Engineering failure analysis Vol. 181; p. 109935
• Main Authors: Wang, Xiaohua, Feng, Yanjun, Zhang, Fengshou, Zhao, Kaikai, Yin, Zirui
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.11.2025
• Subjects: Engineering disaster; Geological engineering; Ground fracturing; Numerical simulation; Rock mechanics; Ground fracturing; Numerical simulation; Engineering disaster; Geological engineering; Rock mechanics

•A numerical model of HTR instability during coal mining is developed.•A study on the response characteristics of HTR before and after hydraulic fracturing is conducted.•Impact of fracture spacing, fracture height, and fracturing horizon on roof collapse is revealed. During the excavation of thick t...