高原冻土覆盖区某铅锌矿的多功能电法试验研究
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摘要
青藏高原矿产资源极为丰富,但是高寒冻土覆盖层严重制约了传统电法的勘探效果。以青藏高原某铅锌矿为例,开展了高原冻土覆盖区多功能电法找矿技术的应用试验。在研究区开展了大功率TDIP,快速查明了研究区视极化率与视电阻率分布情况。利用RPIP测深测量,确定了极化体的埋深及空间分布形态。利用了CSAMT测深测量,研究了深部地质体的电阻率异常分布。试验结果表面,三种方法异常一致性较好,圈定的异常范围与已知地质、矿产吻合良好。该研究对解决高原冻土覆盖区金属矿探测具有一定的参考价值,对推进青藏高原矿产资源的勘探与开发具有一定的现实意义。
The Tibet plateau is rich in mineral resources,but the plateau frozen soil covering seriously restricted the effect of traditional electromagnetic method exploration.In the Tuotuohe lead-zinc polymetallic deposit,we made the application test of integrated electromagnetic method technology in metallic ore exploration in plateau permafrost coverage.In the study area,the application of high power IP intermediate gradient scanning measurement quickly pinpoint the plane distribution of the IP anomaly;Development of the multi frequency phase IP sounding determine depth and spatial distribution pattern of the polarization body;The application of controllable source audio frequency magnetotelluric sounding can research the resistivity anomaly distribution of deep geological body.The experimental results show that the three measuring methods have good consistency and the results in good agreement with the delineation of range and known geologic and the mineral information.This paper summarized a set of exploration methods and techniques to explore concealed ore deposits which is applicable to the condition of plateau permafrost coverage.It has important significance for metallic ore exploration in Plateau Permafrost coverage.
The Tibet plateau is rich in mineral resources,but the plateau frozen soil covering seriously restricted the effect of traditional electromagnetic method exploration.In the Tuotuohe lead-zinc polymetallic deposit,we made the application test of integrated electromagnetic method technology in metallic ore exploration in plateau permafrost coverage.In the study area,the application of high power IP intermediate gradient scanning measurement quickly pinpoint the plane distribution of the IP anomaly;Development of the multi frequency phase IP sounding determine depth and spatial distribution pattern of the polarization body;The application of controllable source audio frequency magnetotelluric sounding can research the resistivity anomaly distribution of deep geological body.The experimental results show that the three measuring methods have good consistency and the results in good agreement with the delineation of range and known geologic and the mineral information.This paper summarized a set of exploration methods and techniques to explore concealed ore deposits which is applicable to the condition of plateau permafrost coverage.It has important significance for metallic ore exploration in Plateau Permafrost coverage.
引文
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[7]姚大为,王书民,雷达,等.CSAMT在祁连山永久冻土区天然气水合物调查中的应用[J].工程地球物理学报,2013,10(2):132-137.YAO D W,WANG S M,LEI D,et al.Application of CSAMT to Qilian Mountain Permafrost Region Gas Hydrate Investigation[J].Chinese Journal of Engineering Geophysics,2013,10(2):132-137.(In Chinese)
[8]王珺璐,林品荣,李荡,等.CSAMT测量中磁场对测量结果的影响[J].煤田地质与勘探,2015,43(6):100-104+108.WANG J L,LIN P R,LI D,et al.The Influence of Magnetic Field on Measuring Result of CSAMT[J].Coal Geology&exploration,2015,43(6):100-108.(In Chinese)
[9]王珺璐,刘明文,李荡.基于cole-cole复电阻率模型的线源可控源有限元数值模拟[J].物探化探计算技术,2015,37(1):32-37.WANG J L,LIU M W,LI D.Finite element numerical simulation on line controlled source based on colecole model[J].Computing Techniques for Geophysical and Geochemical Exploration,2015,37(1):32-37.(In Chinese)
[10]林品荣,郑采君,石福升,等.电磁法综合探测系统研究[J].地质学报,2006,80(10):1539-1548.LIN P R,ZHENG C J,SHI F S,et al.The research of integrated electromagnetic method system[J].Acta Geologica Sinica,2006,80(10):1539-1548.(In Chinese)
[11]林品荣,郭鹏,石福升,等.大深度多功能电磁探测技术研究[J].地球学报,2010,31(2):149-154.LIN P R,GUO P,SHI F S,et al.A study of the techniques for large-depth and multi-functional electromagnetic survey[J].Acta Geoscientica Sinica,2010,31(2):149-154.(In Chinese)
[12]石福升.大功率多功能发射系统研究[J].地球物理学进展,2009,24(3):1109-1114.SHI F S.A study on high-power multi-function transmitting system[J].Progress in Geophysics,2009,24(3):1109-1114.(In Chinese)
[13]李建华,林品荣.野外实验场地球物理电磁数据采集与分析[J].地球物理学进展,2012,27(4):1377-1384.LI J H,LIN P R.Acquisition and analysis of geophysical electromagnetic data on the experiment field[J].Progress in Geophysics,2012,27(4):1377-1384.(In Chinese)
[14]吴广宁,张军,付龙海,等.高原多年冻土地区降低接地电阻的试验研究[J].西南交通大学学报,2005,40(2):138-141.WU G N,ZHANG J,FU L H,et al.Experimental investigation on reducing gounding-resistance in perennial frozen sediment areas[J].Journal of Southwest Jiaotong,2005,40(2):138-141.(In Chinese)
[15]郭鹏,林品荣,石福升,等.相位激电勘探中除电磁耦合的方法[P].河北:CN10447389A,2015-03-11.GUO P,LIN P R,SHI F S,et al.Method of decoupling in phase IP exploration[P].Hebei:CN10447389A,2015-03-11.(In Chinese)
[16]罗延钟,熊宗厚,崔先文.同时存在激电和电磁效应的频谱激电异常性质[J].物探与化探,1987,11(2):106-114.LUO Y Z,XIONG Z H,CUI X W.Properties of the spectral IP anomaly in coexistence of IP and electromagnetic effects[J].Geophysical and Geochemical Exploration,1987,11(2):106-114.(In Chinese)
[17]何继善,熊彬,鲍力知,等.激发极化观测中电磁耦合的时间特性[J].地球物理学报,2008,51(3):886-893.HE J S,XIONG B,BAO L Z,et al.2008.Time characteristics of EM coupling in induced polarization[J].Chinese J.GeophysK,2008,51(3):886-893.(In Chinese)
[18]黄寄洲,张国鸿.频率域激电法的电磁耦合校正应用研究[J].安徽地质,2014,24(3):205-209.HUANG J Z,ZHANG G H.Applied research of electromagnetic coupling correction in frequency domain IP[J].Geology of Anhui,2014,24(3):205-209.(In Chinese)
[19]郭鹏,林品荣,石福升.相位激电电磁耦合两频校正技术[J].物探与化探,2010,34(4):489-492.GUO P,LIN P R,SHI F S.The phase IP electromagnetic coupling correction technique of two frequencies[J].Geophysical and Geochemical Exploration,2010,34(4):489-492.(In Chinese)
[20]黄兆辉,底青云,候胜利.CSAMT的静态效应校正及应用[J].地球物理学进展,2006,21(4):1290-1295.HUANG Z H,DI Q Y,HOU S L.CSAMT static correction and its application[J].Progress in Geophysics,2006,21(4):1290-1295.(In Chinese)
[2]龙涛.青藏高原金属矿产资源开发的特征分析[J].中国矿业,2013,22(6):11-13.LONG T.Feature analysis on the development of Qinghai-Tibet plateau metal mineral resources[J].China Mining Magazine,2013,22(6):11-13.(In Chinese)
[3]陈文明,李永森,亓绍玫,等.青藏高原有色金属矿产分布特征[J].地球学报,2000,21(1):26-37.CHEN W M,LI Y S,Qi S M,et al.2000.Distribution of nonferrous metallic mineral resources in Qinghai-Tibet plateau[J].Acta Geoscientica Sinica,2000,21(1):26-37.(In Chinese)
[4]曹令敏.地球物理方法在金属矿深部找矿中的应用及展望[J].地球物理学进展,2011,26(2):701-708.CAO L M.The application and expectation of the geophysical methods to deep metal mine exploration[J].Progress in Geophysics,2011,26(2):701-708.(In Chinese)
[5]陈伟军,刘红涛.综合地球物理方法在隐伏矿床勘查中的应用——以内蒙赵家围子银铅锌多金属矿床为例[J].地球物理学进展,2009,24(1):293-302.CHEN W J,LIU H T.Integrated geophysical exploration for concealed ore beneath cover in the Zhaojiaweizi area,inner Mongolia,northern china[J].Progress in Geophysics,2009,24(1):293-302.(In Chinese)
[6]王绪本,陈进超,郭全仕,等.沁水盆地北部煤层气富集区CSAMT勘探试验研究[J].地球物理学报,2013,56(12):4310-4323.WANG X B,CHEN J C,GUO Q S,et al.Research of the CSAMT exploration mode and experiment for the coalbed methane enrichment region in the north Qinshui basin[J].Chinese J.Geophys,2013,56(12):4310-4323.(In Chinese)
[7]姚大为,王书民,雷达,等.CSAMT在祁连山永久冻土区天然气水合物调查中的应用[J].工程地球物理学报,2013,10(2):132-137.YAO D W,WANG S M,LEI D,et al.Application of CSAMT to Qilian Mountain Permafrost Region Gas Hydrate Investigation[J].Chinese Journal of Engineering Geophysics,2013,10(2):132-137.(In Chinese)
[8]王珺璐,林品荣,李荡,等.CSAMT测量中磁场对测量结果的影响[J].煤田地质与勘探,2015,43(6):100-104+108.WANG J L,LIN P R,LI D,et al.The Influence of Magnetic Field on Measuring Result of CSAMT[J].Coal Geology&exploration,2015,43(6):100-108.(In Chinese)
[9]王珺璐,刘明文,李荡.基于cole-cole复电阻率模型的线源可控源有限元数值模拟[J].物探化探计算技术,2015,37(1):32-37.WANG J L,LIU M W,LI D.Finite element numerical simulation on line controlled source based on colecole model[J].Computing Techniques for Geophysical and Geochemical Exploration,2015,37(1):32-37.(In Chinese)
[10]林品荣,郑采君,石福升,等.电磁法综合探测系统研究[J].地质学报,2006,80(10):1539-1548.LIN P R,ZHENG C J,SHI F S,et al.The research of integrated electromagnetic method system[J].Acta Geologica Sinica,2006,80(10):1539-1548.(In Chinese)
[11]林品荣,郭鹏,石福升,等.大深度多功能电磁探测技术研究[J].地球学报,2010,31(2):149-154.LIN P R,GUO P,SHI F S,et al.A study of the techniques for large-depth and multi-functional electromagnetic survey[J].Acta Geoscientica Sinica,2010,31(2):149-154.(In Chinese)
[12]石福升.大功率多功能发射系统研究[J].地球物理学进展,2009,24(3):1109-1114.SHI F S.A study on high-power multi-function transmitting system[J].Progress in Geophysics,2009,24(3):1109-1114.(In Chinese)
[13]李建华,林品荣.野外实验场地球物理电磁数据采集与分析[J].地球物理学进展,2012,27(4):1377-1384.LI J H,LIN P R.Acquisition and analysis of geophysical electromagnetic data on the experiment field[J].Progress in Geophysics,2012,27(4):1377-1384.(In Chinese)
[14]吴广宁,张军,付龙海,等.高原多年冻土地区降低接地电阻的试验研究[J].西南交通大学学报,2005,40(2):138-141.WU G N,ZHANG J,FU L H,et al.Experimental investigation on reducing gounding-resistance in perennial frozen sediment areas[J].Journal of Southwest Jiaotong,2005,40(2):138-141.(In Chinese)
[15]郭鹏,林品荣,石福升,等.相位激电勘探中除电磁耦合的方法[P].河北:CN10447389A,2015-03-11.GUO P,LIN P R,SHI F S,et al.Method of decoupling in phase IP exploration[P].Hebei:CN10447389A,2015-03-11.(In Chinese)
[16]罗延钟,熊宗厚,崔先文.同时存在激电和电磁效应的频谱激电异常性质[J].物探与化探,1987,11(2):106-114.LUO Y Z,XIONG Z H,CUI X W.Properties of the spectral IP anomaly in coexistence of IP and electromagnetic effects[J].Geophysical and Geochemical Exploration,1987,11(2):106-114.(In Chinese)
[17]何继善,熊彬,鲍力知,等.激发极化观测中电磁耦合的时间特性[J].地球物理学报,2008,51(3):886-893.HE J S,XIONG B,BAO L Z,et al.2008.Time characteristics of EM coupling in induced polarization[J].Chinese J.GeophysK,2008,51(3):886-893.(In Chinese)
[18]黄寄洲,张国鸿.频率域激电法的电磁耦合校正应用研究[J].安徽地质,2014,24(3):205-209.HUANG J Z,ZHANG G H.Applied research of electromagnetic coupling correction in frequency domain IP[J].Geology of Anhui,2014,24(3):205-209.(In Chinese)
[19]郭鹏,林品荣,石福升.相位激电电磁耦合两频校正技术[J].物探与化探,2010,34(4):489-492.GUO P,LIN P R,SHI F S.The phase IP electromagnetic coupling correction technique of two frequencies[J].Geophysical and Geochemical Exploration,2010,34(4):489-492.(In Chinese)
[20]黄兆辉,底青云,候胜利.CSAMT的静态效应校正及应用[J].地球物理学进展,2006,21(4):1290-1295.HUANG Z H,DI Q Y,HOU S L.CSAMT static correction and its application[J].Progress in Geophysics,2006,21(4):1290-1295.(In Chinese)