CSAMT和IP法在凤县老厂铅锌矿区的应用效果
Application of CSAMT and IP Methods in Laochang Lead-zinc Ore Mining Area of Fengxian-County
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摘要: 通过在已知矿体上的物探方法试验,论述了CSAMT、SIP、TDIP3种方法的物探异常特征和找矿效果,分析了TDIP法因地形影响因素带来的异常空间错位。SIP和TDIP法可较为准确的确定激电异常的平面位置,消除地形影响因素。结合视时间常数和视频率相关系数的异常特征反映,能有效地区分矿异常与非矿异常。CSAMT法能清晰地反映出激电异常和其围岩的电阻率特性。研究成果表明,本区矿致异常特征为低电阻率、高充电率、大时间常数、低频率相关系数。3种方法相结合,可准确判定异常体的位置、深度、倾向。多种参数相互佐证,可降有效降低多解性,为下一步地质工程提供可靠的资料依据。Abstract: Based on experiments on some known ore bodies,we discuss the anomalous features and ore-prospecting effect of the methods of CSAMT,SIP,and TDIP,and analyze the spatial dislocation resulted from landform factor in using the TDIP method.SIP and TDIP can accurately determine location of anomalies on surface and can eliminate the negative effect of landform.CSAMT can give a clear boundary of difference resistivity for wall rock.The result shows that the Anomalo us features in this mining area is low resistivity,high chargeability,long time constant,and low frequency correlation coefficient.We can analyze position,depth,tendency for abnormal bo dies based on these four parameters and provide reliable geologic data for the next step.
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Key words:
- Fengxian-laochang /
- lead-zinc ores /
- CSAMT /
- SIP /
- TDIP /
- topographic influence /
- anomalous features /
- V8
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