TY - JOUR TI - Technology and practice of the roof-caving of hydraulic fracturing in a fully mechanized caving face AU - Deng Qigen AU - Zhao Fajun AU - Li Hong AU - Yin Jingping AU - Zhang Tao AU - Wei Junjie JN - Thermal Science PY - 2021 VL - 25 IS - 3 SP - 2117 EP - 2126 PT - Article AB - A fracture expansion criterion of hydraulic fracturing was suggested to deal with the hard and stable roof control in coal mines. An experiment was designed for the roof control, and the reliability of model was verified. Four different types of fracturing holes and fracturing technology were designed in the setup room, and the hydraulic fracturing in the roof of a fully mechanized caving face was implemented.