两淮地球物理界面及含煤区地球物理特征 .pdfVIP

学兔兔 第22卷7期 中 国 煤 炭 地 质 V01．22 No．7 2010年7月 C0AL GE0L0GY OF CH A Ju1． 2010 doi：10．3969~．issn．1674—1803．2010．07．14 文章编号：1674—1803(2010)07—0066—04 两淮地球物理界面及含煤区地球物理特征 蘑称兴 (安徽省煤田地质局物探测量队，安徽 合肥 230088) 摘 要：安徽省两淮地区属全掩盖式煤田，在煤田的发现及开发阶段物探资料(重、磁、电、地震)具有不可替代的作 用。两淮地区地层存在着明显的密度界面、磁性界面、电性层界面及波阻抗界面，与其相对应的重力场、磁场、电场、 地震等地球物理特征反映了不同时期的沉积环境及区域构造特点。根据煤系地层与其它岩层的物性差异，提出了应 用物探资料分析煤系赋存规律的方法及控煤构造综合解释方法。 关键词：密度；磁性；重力；电阻率；地震；含煤区；两淮地区 中图分类号：P63l 文献标识码：A Geophysical Interfaces and Coal-bearing Area Geophysical Characteristics jn Huainan and Huaibei Coaifields Tang Xinxing (Geophysical Prospecting and Surveying Team，Anhui Bureau of Coal Geological Exploration，Suzhou，Anhui 234000) Abstract：The Huainan and Huaibei coalfields in the Anhui Province are all totally Cenozoic covered coalfields．The geophysical prospecting information (gravitational，magnetic，electric and seismic)acquired during the coalfield discovery and development stages will play an irreplaceable role．Density，magnetic，electrie and wave impedance interfaces can obviously reflect strata in both coalfields．Geophysical characteristics of corresponding gravitational，magnetic and electric fields and seismic information have reflected depositional environments and tectonic features during different periods．According to physical property differences between coal measures and other strata，an integrated interpretation method to analyze coal measures hosting pattern and coal controlling structures put forward．