三维地震勘探在康平煤田“无煤带”研究中的应用

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英文篇名：Application of3D Seismic Exploration To Study of″No-coal Zone″in Kangping Coal Mine 中文刊名：中国煤田地质 英文刊名：Coal Geology of China 作者：赵士华 ; 吴奕峰 英文作者：Zhao Shihua 1 ; Wu Yifeng 2 (1.North East University ; Shenyang Liaoning110101 ; 2.Research Ins titute of Coal Geophysical Exploration ; Zhuozhou Hebei072752) 中文关键词：三维地震 ; 无煤带 ; 康平煤田 英文关键词：D seismic ; no-coal zone ; Kangping coal mine 出版日期：2003-12-30 机构：东北大学,中国煤田物探研究院 辽宁沈阳110101 ,河北涿州072752 年：2003 期：06 出版单位：中国煤田地质

摘要

“无煤带”是康平煤田特有的一种地质现象。“无煤带”是指煤层缺失变薄至不可采的地带或条带,多分布于构造复杂地区,且与该地区断层走向一致,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。据此在1煤层底板等高线图上圈出了1煤层反射波振幅异常带,确定了无煤区域。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。
No-coal zone”,i.e.zone or strip with coal seam getting thinner and unminabl e,is a structure peculiarly in Kangping Coal Mine.It is mainly distributed in the area with complex structure,with distribution direction identical to the st rike of faults in the area,and is accompanied with one or several faults.Based on the study of3D seismic data and forward seismic model in the area,it was d iscovered that zone with anomalous amplitude for reflected wave in coal seam(am plitude getting thinner)is just corresponding to no-coal area and area with co al seam getting thinner caused by various reasons.Zone with anomalous amplitude for reflected wave in No.1coal seam was delineated on bottom contour map of N o.1coal seam.The results provide reliable geological guarantee for division o f working area in the mining area,layout of the tunnel and safe production of t he coalmine.

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