As the working face advances, the overlying aquiclude is subjected to periodic dynamic loads, causing pore water pressure distortion, which provides important forewarning for a water inrush disaster in shallow coal seams. In order to analyze the pore water pressure in an aquiclude and determine the spatial-temporal characteristics of the water inrush, the aquiclude is simplified into a saturated, porous, liquid-solid medium and a viscoelastic dynamic model is created to obtain the analytical solution of the pressure distribution. FLAC3D is used to develop a fluid-solid coupling model and to analyze the characteristics of the pressure change and overburden under different mining intensities. This study on pore water pressure in an aquiclude and the determination of the spatial-temporal characteristics of the water inrush provides a foundation for developing early-warning systems for roof water inrush.

中文翻译：

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含水层孔隙水压力和顶棚突水时空特征的模拟研究

随着工作面的推进，上覆的含水层会受到周期性的动态载荷，从而导致孔隙水压力畸变，从而为浅层煤层的突水灾害提供重要的预警。为了分析含水层中的孔隙水压力并确定突水的时空特征，将该含水层简化为饱和的多孔液固介质，并建立了粘弹性动力学模型，以求得解析解。压力分布。FLAC3D用于建立流固耦合模型，并分析不同开采强度下的压力变化和覆盖层特征。