Abstract： High confined water outburst disaster of thick aquiclude floor in deep mining is a major problem restricting the safe and efficient mining of deep coal seam. In this paper, Xingdong Mine was taken as the research object. According to the change of water outburst and the failure characteristics of thick aquiclude floor in deep mining, the stress disturbance mode acting on the floor was divided into two types : the dynamic load of far-field main roof instability and the static load disturbance mode of near-field abutment pressure. The failure mode of thick aquiclude floor in deep mining was divided into two modes : mining-induced fracture and deep concealed structure of floor and the failure mode of directly connecting Ordovician limestone aquifer through fault. Based on this, the prevention and control technology of water outburst from thick aquiclude floor in deep mining based on ' regional grouting reinforcement + roof cutting and pressure relief ' was constructed. It effectively prevented the occurrence of water outburst from thick aquifuge floor in deep area of Xingdong Mine.
孙 建. 深部开采厚隔水层底板破坏模式及突水防控技术[J]. 煤炭与化工, 2023, 46(5): 53-57，65..
Sun Jian. Failure mode and water outburst prevention and control technology of thick aquiclude floor in deep mining. CCI, 2023, 46(5): 53-57，65..
