【摘要】 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。更多还原

【Abstract】 It is very important to study overburden failure law for safety mining under water bodies. In order to get overburden failure law,it takes 22111 working face fully-mechanized mining of a certain coal mine for example,uses FLAC3D numerical simulation software,and it establishes three dimensional numerical model,analyzes and studies overburden failure law induced by the working face mining,then determines the distribution forms and development heights of caving zone and water flowing fractured zone. Compared field measured results with empirical formula calculation results,numerical simulation results show that the use of numerical simulation for predicting the mining overburden failure law has bigger superiority to other methods.更多还原