三维地震勘探资料解释技术在识别陷落柱中的应用
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摘要
陷落柱是煤层下伏灰岩地层内岩溶发育到一定程度,上覆地层在重力作用下自然塌落而形成的一种地质现象。以山西潞安某采区三维地震勘探数据体为基础,应用全三维地震解释技术,根据时间剖面、方差体切片、水平切片等对区内陷落柱进行综合评定,并结合该区勘探成果,介绍了陷落柱的形成原因和地质特征,分析了陷落柱在时间剖面上的几种特征。
When the karst of limestone underlying the coal seam develop to a certain degree,the overlying layers will fall down spontaneously,and the collapse columns,a normal geologic phenomenon,are formed.Based on the 3D seismic data that provided by some area in Lu′an Group of Shanxi Province,the full three-dimensional seismic interpretation was used to evaluate the collapse columns in the regions by using the geological data of time section,variance body slice,level slice and so on.The forming causes and geological characteristics of the collapse columns were introduced according to the exploring results,several features of the collapse columns in time profile were also analysed.
引文
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