覆岩破坏规律的研究对水体下安全采煤至关重要。为获得采动覆岩破坏规律,以某矿22111工作面综采为例,应用FLAC3D数值模拟软件,建立了其三维数值模型,对工作面开采引起的覆岩破坏规律进行了分析研究,确定了导水裂缝带和垮落带的分布形态及发育高度,利用实测结果和经验公式计算结果进行了对比验证,数值模拟计算的结果表明:用数值模拟的方法预测采动覆岩破坏规律具有较大的优越性。 Research on the rule of overburden failure is crucial for safe coal mining under water. In order to obtain the law of mining overburden failure, taking the fully mechanized mining of No. 22111 working face of a mine as an example, the three-dimensional numerical model was set up by using FLAC3D numerical simulation software to analyze and study the rule of overburden failure caused by mining face, The distribution pattern and development height of water-conducting fracture zone and caving zone were verified by the comparison between the measured results and the empirical formula. The results of numerical simulation show that the law of failure of mining overburden rock is predicted by numerical simulation The superiority.