| 双频激电法在浙江省苦麻岭地区找矿勘查中的应用 |
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| 引用本文： | 刘达龙,刘鸿福,张新军,张和生.双频激电法在浙江省苦麻岭地区找矿勘查中的应用[J].中国煤炭地质,2011(2):59-63. |
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| 作者姓名： | 刘达龙 刘鸿福 张新军 张和生 |
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| 作者单位： | 太原理工大学,山西太原030024 |
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| 摘 要： | 浙江省常山县苦麻岭地区位于钱塘台褶皱带华埠-新登陷褶带上,具备了与成矿密切相关的条件,但地形起伏大、构造复杂、植被发育茂盛等因素严重制约着探矿效果。为此采用双频激电法,通过对称四极测深对该勘查区进行勘探。针对视电阻率测深曲线出现的跳跃、波动等异常形态,结合地层岩性、构造裂隙发育情况及视幅频率反映,对干扰因素进行排除,并依据视电阻率曲线拐点异常及增大趋势确定区内花岗岩岩体埋深及边界变化规律,指出该花岗岩顶部界面较平缓或下凹处,其围岩接触带为富集、成矿的有利部位。由视电阻率ρs和视幅频率Fs断面图推断,矿化异常等值线未封闭,异常中心位于测线以东,该结论对勘查区及类似地区扩大找矿规模具有一定指导意义。
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| 关 键 词： | 双频激电法 视电阻率 视幅频率 对称四极测深 苦麻岭地区 |
Application of Dual-frequency Induced Polarization Method in Kumaling Ore Prospecting in Zhejiang Province |
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| Liu Dalong,Liu Hongfu,Zhang Xinjun and Zhang Hesheng.Application of Dual-frequency Induced Polarization Method in Kumaling Ore Prospecting in Zhejiang Province[J].Coal Geology of China,2011(2):59-63. |
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| Authors: | Liu Dalong Liu Hongfu Zhang Xinjun and Zhang Hesheng |
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| Institution: | (Taiyuan University of Technology,Taiyuan,Shanxi 030024) |
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| Abstract: | The Kumaling area in Changshan County,Zhejiang is located on the Huabu-Xindeng depressed fold belt,Qiantang platformal fold belt and has met the essential condition of ore formation.But because of topographic relief,complex structure and thick vegetation have seriously restricted prospecting effect.Thus the dual-frequency IP method has used through symmetrical four-electrode sounding in prospecting.In allusion to abnormal configurations of skipping and undulating on apparent resistivity sounding traces,combine with strata lithology,tectonic fissure development and apparent amplitude frequency reflection,carry out interference factors elimination.According to apparent resistivity trace inflection point anomalies and increasing trend to determine granite mass depth and boundary variation pattern and point out near the boundary of the granite top is rather flat or concave site,wall rock contact zone will be the favored site for mineral enrichment and ore formation.Presumption from apparent resistivity,ρs and apparent amplitude frequency Fs sectional drawing,mineralization anomalous contours are not closed,anomalous center to the east of survey line,thus the conclusion has certain guiding significance to extend ore searching scope in the prospecting area and analogous areas. |
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| Keywords: | dual-frequency IP method apparent resistivity apparent amplitude frequency symmetrical four-electrode sounding Kumaling area |
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