Hydraulic fracture propagation in soft coal composite reservoirs: Mechanical responses and energy dissipation mechanisms

• Published in: International journal of mining science and technology Vol. 35; no. 4; pp. 573 - 588
• Main Authors: Zhou, Aitao, He, Yizheng, Wang, Kai, Li, Bo, Wang, Yida, Yang, Yuexin
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.04.2025; Elsevier
• Subjects: Coal-rock complex; Eliminating gas outburst; Energy evolution; Hydraulic fracturing; Soft coal seams; Energy evolution; Eliminating gas outburst; Soft coal seams; Hydraulic fracturing; Coal-rock complex

The hydraulic fractures induced in soft coal composite reservoirs have complex extension and energy evolution characteristics. In this study, the mechanism whereby gas outbursts can be eliminated by hydraulic fracturing was revealed. The combined fracturing process of a coal seam and its roof under...