富水层下开采导水裂隙带发育及覆岩周期破断规律研究

Research on the law of fissure zone of conducting-water development and overlying strata cycle breakage mining under water-rich rock layer

采用相似模拟实验与离散元数值模拟相结合的方法研究了某矿采动裂隙带的影响范围,并获得了导水裂隙带发育规律及覆岩周期破断规律,为煤矿开采防水煤柱留设提供了直接依据,可防止采空区裂隙导通而产生的突水事故,确保煤矿安全生产。

In the case of water-rich rock layer covered the top of coal, the study of the development scope and the height of overbueden mined rock fissures is a major initiatives of prevented of water inrush incidents？ in the lower part of work surface. This article used Similar simulation？ experiment to study the affected area？ of mined fracture zone？ in a mine. and get the development law of water-guide fracture zone and the law？ of cycle breaking of overburden rock. It＇ s provided a direct evidence？ to reserved waterproof pillar, to prevent the water inrush incidents？ which caused by fracture, and to ensure the production of coal mining safety.