The rock plate (RP) method can be used to identify the size and location of potentially dangerous bed separation space (BSS) in coal mines. The RP method is performed in three steps: (1) The rock strata above the coal seam is simplified as a composite plate calculation model; (2) The deflection of rock strata is expressed as a double trigonometric series and obtained using the energy method; (3) The internal-forces and deformation of the RP are solved to determine the size and location of the BSS based on elasticity and a BSS identification process. This requires that the BSS be unbroken, and the BSS upper rock stratum be an aquifer. In this study, the Yuanzigou coal mine was taken as a study case and the RP method was used to determine the size and location of BSS water (BSS-W) above the coal goaf of working face 1,012,001. BSS usually occurs at the contact surface between hard and soft rock strata; at this mine, BSS-W exists between the Yijun conglomerate and the Anding mudstone formations. The results predicted that when the working face advanced 350 m, the third BSS will break, allowing BSS-W to flood into the goaf. These results were verified by borehole video observation. Therefore, two control methods were used: inclined drainage holes drilled from the roadway and spaced holes drilled from the surface in areas with abundant water. This paper thus provides a way to locate the BSS-W and prevent an inrush hazard.

中文翻译：

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床层分离空间突水危害的预测与防治

岩石板（RP）法可用于识别煤矿潜在危险床层分离空间（BSS）的大小和位置。RP方法分三步进行：（1）将煤层上方的岩层简化为复合板计算模型；(2) 岩层挠度用双三角级数表示，用能量法求得；(3)求解RP的内力和变形，基于弹性和BSS识别过程确定BSS的大小和位置。这要求BSS 是不间断的，并且BSS 上层岩层是含水层。本研究以元子沟煤矿为研究案例，采用RP方法确定1,012,001工作面采空区上方BSS水（BSS-W）的大小和位置。BSS通常发生在软硬岩层的接触面；在该矿，BSS-W 存在于宜君砾岩和安定泥岩地层之间。结果预测，当工作面前进350 m时，第三个BSS将破裂，使BSS-W涌入采空区。这些结果通过钻孔视频观测得到了验证。因此，采用了两种控制方法：从巷道钻斜排水孔和在水丰富的地区从地表钻间隔孔。因此，本文提供了一种定位 BSS-W 并防止浪涌危险的方法。允许 BSS-W 涌入采空区。这些结果通过钻孔视频观测得到了验证。因此，采用了两种控制方法：从巷道钻斜排水孔和在水丰富的地区从地表钻间隔孔。因此，本文提供了一种定位 BSS-W 并防止浪涌危险的方法。允许 BSS-W 涌入采空区。这些结果通过钻孔视频观测得到了验证。因此，采用了两种控制方法：从巷道钻斜排水孔和在水丰富的地区从地表钻间隔孔。因此，本文提供了一种定位 BSS-W 并防止浪涌危险的方法。