A collapse column is a geological structure formed by the dissolution of a soluble rock layer under certain hydrogeological conditions. This forms a cavity, which is filled by the overburden. Collapse columns have a great impact on coal mining safety. In this work, a model of a concealed collapse column is constructed according to its diameter, and the finite difference method is used to simulate it using an acoustic equation. The seismic record characteristics of the collapse column are analyzed. In the seismic section, the attributes of the reflected wave of the concealed collapse column in the coal seam are small and undetectable, and the reflected wave of the auxiliary horizon (the upper interface of Ordovician limestone) is in-phase axis. It is difficult to artificially identify concealed collapse columns with small diameters when twisting or dislocation occurs. However, the reflected wave properties clearly indicate an annular anomaly on the horizon property plane, which helps to identify the concealed collapse column. Finally, the seismic attributes of reflected waves at the interface between the 10# coal seam and Ordovician limestone roof in the BY mining area of TY mine are identified using high-density three-dimensional seismic data to verify the effectiveness of the proposed method in identifying concealed collapse columns.

中文翻译：

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煤田隐性塌陷柱识别的地震属性方法

塌陷柱是通过在某些水文地质条件下溶解可溶岩层而形成的地质结构。这形成了一个空腔，该空腔被覆盖层填充。塌陷柱对煤矿安全有很大影响。在这项工作中，根据其直径构造了一个隐藏的塌陷柱模型，并使用有限差分法通过声学方程对其进行了模拟。分析了塌陷柱的地震记录特征。在地震剖面上，煤层中隐伏塌陷柱的反射波属性很小且无法检测到，辅助层位（奥陶纪石灰岩上界面）的反射波为同相轴。当发生扭曲或错位时，很难人为地识别直径较小的隐藏式塌陷柱。但是，反射波的特性清楚地表明了地平线特性平面上的环形异常，这有助于识别隐藏的塌陷柱。最后，利用高密度三维地震资料，确定了TY矿BY矿区10＃煤层与奥陶系灰岩顶板交界处反射波的地震属性，验证了该方法的有效性。隐藏的折叠柱。