摘要
将软岩采场老顶岩层视为支承于粘弹性基础上的薄板，设计了研究老顶破断的ＦＥＡＥＢＰ有限元模拟方法。该法能有效的模拟各种岩性参数、开采边界条件和各种几何尺寸的老顶岩层在开采过程中破坏的过程和结果，最终提供老顶的破坏形式、断裂步距、顶板下沉状态等分析数据，并对老顶来压的预测预报、选择合理的控顶措施提供依据。
A computer simulation methld: FEAEBP has been developed for simulating the breakage of the main roof, considering it as a thin plate Supported on viscoelastic foundation. By the method peresented in the paper, various parameters of the rock properties, different boundary conditions of the working face and the initiation, development and the resules of the breaking process of the main roof with different geometric dimensions all can be effectively simulated. The results can provide data for analysing the breaking forms, breaking distance and the state of roof deflection. Moreover, the simulation results also can provide a theoretic basic for forecasting, and predicting of the main roof pressure, and for selecting of suibable roofcontroling measures.
