山西繁峙县山辛庄铁矿高精度磁测异常解释研究

发布时间：2018-02-04 12:25

本文关键词： 山西省繁峙县山辛庄矿区高精度磁测寻找磁铁矿磁异常解释　出处：《昆明理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：铁是我国国民经济发展中需求量最多的一种金属。五台山地区是我国主要铁矿产地和铁矿重点远景区之一,山西省繁峙县山辛庄铁矿区位于五台山地区内,且区内存在航磁异常及磁铁矿矿化,具有较好的磁铁矿找矿前景,因此,在山辛庄矿区开展高精度磁测勘查工作,寻找磁铁矿。在矿区内开展了1：5000高精度磁法测量,完成50×10(线距／米×点距／米)网度高精度磁测面积21.23平方千米,测线151条,磁测点42619个,异常及矿化地段加密至5m,每条勘探剖面上布设1：2000高精度磁测剖面,异常及含矿层地段加密至5m,总工作量40km。通过对实测磁力△T资料进行位场转换、化极、向上延拓、插值切割、小波变换、趋势分析等处理,最终提取了相应的磁力垂直分量化极局部Za⊥J异常,共63个,并提出了推断解释意见,经综合分析认为M26、M27、M31、M32、M34和M47等6个异常是由矿体引起的；M21、M22、M23等21个异常具有找矿意义；其余36个异常无找矿意义。根据磁异常平面特征选择6条典型剖面进行人机二度半正反演,推断了场源体的倾向、倾角、顶端埋深、厚度和下延深度等,为下一步找矿工作提供磁测信息。
[Abstract]:Iron is one of the most needed metals in the development of our national economy. The Wutai Mountain area is one of the main iron ore producing areas and one of the key iron ore scenic spots in China, and the Shanxinzhuang Iron Mine area in Fanshi County of Shanxi Province is located in the Wutai Mountain area. There are aeromagnetic anomalies and magnetite mineralization in the area, which has a good prospect of magnetite prospecting. Therefore, high-precision magnetic prospecting work is carried out in Shanxinzhuang mining area. To find magnetite ore. 1: 5000 high precision magnetic survey was carried out in the mining area, and the area of high precision magnetic measurement of 50 脳 10 (line distance / meter 脳 point distance / meter) mesh was 21.23 square kilometers. There are 151 lines, 42619 magnetic measuring points, and the abnormal and mineralized areas are infilled to 5 m. Each exploration section is equipped with 1: 2000 high precision magnetic section, and the abnormal and ore-bearing strata are infilled to 5m. The total amount of work is 40km. through the transformation of potential field, polarity, upward continuation, interpolation cutting, wavelet transform, trend analysis and so on, the measured magnetic T data are processed. Finally, a total of 63 local Za Karabakh J anomalies of the magnetic vertical quantization pole are extracted, and the inferential interpretation is put forward. It is concluded that M26M27M31 and M32 are considered by comprehensive analysis. Six anomalies such as M34 and M47 are caused by ore bodies. 21 anomalies such as M21M22M23 have prospecting significance. The other 36 anomalies have no prospecting significance. According to the plane characteristics of magnetic anomalies, 6 typical sections are selected for two-degree semi-forward and inverse modeling, and the inclination, dip angle, top buried depth, thickness and downward extension depth of the field source body are inferred. To provide the magnetic survey information for the next prospecting work.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.31;P631.2

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