三维地震勘探在康平煤田“无煤带”研究中的应用
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摘要
"无煤带"是康平煤田特有的一种构造现象;"无煤带"是指煤层缺失变薄至不可采的地带或条带;"无煤带"多分布于构造复杂地区,并且与该地区断层走向一致,而且均伴有一条或几条断层。通过对该区三维地震资料及正演地震模型的研究,发现煤层反射波振幅异常(振幅变弱)带恰恰对应着各种原因造成无煤区和煤层变薄区域。在1煤层底板等高线图上圈定出了1煤层反射波振幅异常带,这些成果为测区内采面划分、巷道布局和煤矿安全生产提供了有力的地质保证。
"Non-coal zone" , a zone or strip with coal seam getting thinner and unminable ,is a structure peculiarly in Kangping Coal Mine. It is mainly distributed in the area with complex structure, with distribution direction identical to the strike of faults in the area ,and is accompanied with one or several faults. Based on the study of 3D seismic data and forward seismic model in the area., it was discovered that a zone with anomalous amplitude for reflected wave in a coal seam(amplitude getting thinner) is just corresponding to non-coal area and area with coal seam getting thinner caused by various factors. A zone with anomalous amplitude for reflected wave in No.1 coal seam was delineated on bottom contour map of No.1 coal seam. The results provide reliable geological evidences for classification of working areas in the mining areas, layout of the tunnel and safe production in the coal mine.
引文

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