高精度重、磁测量在大兴安岭找矿工作中的应用
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摘要
根据以往的经验,在找矿勘查中,通常应用高精度磁法和电法,很少应用重力方法.本文通过小面积的大比例尺高精度重力工作,展示了重力工作在找矿勘查中所起的作用.尤其是在高纬度覆盖区,地表地质不甚明了、电法工作比较困难的情况下,可以发挥重力工作受环境干扰小的优势,寻找高密度地质体.在本矿区中,重力工作作为高精度磁测工作的重要补充,有利于更准确地确定矿体的位置和平面形态特征.由于高精度磁测方法寻找的是有磁性矿物,当矿体无磁性时,磁异常不能反映矿体的位置和形态.本文根据重力方法和磁测方法的原理,对矿区的地球物理场进行研究,给出本矿区识别矿体异常的原则,根据磁性矿物与铅锌矿伴生的特点,结合磁异常,如果重磁异常中心吻合较好,重磁异常幅值和梯度也较大,表明矿体异常的可靠性很大;当然,对磁异常表现为负磁异常的高频重力高异常也不能忽视,有可能是埋藏浅的无磁性金属矿的反映.所以,需要密切关注幅值大、梯度大的高频重力高异常.
Based on past experience,in the exploration of ore prospecting,normally,we used high accuracy magnetic and electrical method,gavity is rarely used.this paper shows the role of gravity metod in prospecting exploration with small area of large-scale high accuracy gravity work.Espacially in the higher latitudes coverage area,the surface geological uncertain,electrical method is relatively difficult,play the advantage of the small environmental impact to find high density geological body.In this mine,gravity is the important added of high accuracy magnetic metond to more accurately determine in underground orebody characteristics.when the ore body without magnetic,magnetic anomaly can't reflect the position of the ore bodies and form.This paper according to the principle of gravity and magnetic measurement method,studied the earth's physical field of the mining area,and gives the principle to recognize the abnormal of ore body.If the magnetic anomaly center and gravity anomaly center is consistent,amplitude and gradient of anomaly is bigger,show that may be the reflection of the ore body;Of course,the magnetic anomaly performance for negative magnetic anomaly,and high frequency gravity high abnormal also cannot ignore,may be the reflection of shallow buried without magnetic metal.So,need to pay close attention to amplitude,high frequency of gravity gradient big high abnormalities.
Based on past experience,in the exploration of ore prospecting,normally,we used high accuracy magnetic and electrical method,gavity is rarely used.this paper shows the role of gravity metod in prospecting exploration with small area of large-scale high accuracy gravity work.Espacially in the higher latitudes coverage area,the surface geological uncertain,electrical method is relatively difficult,play the advantage of the small environmental impact to find high density geological body.In this mine,gravity is the important added of high accuracy magnetic metond to more accurately determine in underground orebody characteristics.when the ore body without magnetic,magnetic anomaly can't reflect the position of the ore bodies and form.This paper according to the principle of gravity and magnetic measurement method,studied the earth's physical field of the mining area,and gives the principle to recognize the abnormal of ore body.If the magnetic anomaly center and gravity anomaly center is consistent,amplitude and gradient of anomaly is bigger,show that may be the reflection of the ore body;Of course,the magnetic anomaly performance for negative magnetic anomaly,and high frequency gravity high abnormal also cannot ignore,may be the reflection of shallow buried without magnetic metal.So,need to pay close attention to amplitude,high frequency of gravity gradient big high abnormalities.
引文
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[17]马江水,尤福珍,李仰春.大兴安岭呼中地区矿产资源开发利用潜力分析[J].地质与资源,2006,15(1):38-41.Ma J S,You F Z,Li Y C.Analysis on the developingpotential of mineral resources in Huzhong,Daxinganlingregion[J].Geology and Resources(in Chinese),2006,15(1):38-41.
[18]张元俸,褚向飞.嘎莱奥伊山一带铜多金属地质特征分析[J].黑龙江国土资源,2011,(4):61.Zhang Y F,Chu X F.Geological characteristics analysis ofmetallic menral(Copper,et al.)in Galaiauyi Mountain area[J].Heilongjiang Land and Resources(in Chinese),2011,(4):61.
[19]武广,权恒,李广远.黑龙江省西吉诺山多金属矿点地质特征[J].地质与资源,2001,10(4):226-234.Wu G,Quan H,Li G Y.Geological characteristics of theXijinuoshan polymetal ore field in Heilongjiang Province[J].Journal of Precious Metallic Geology(in Chinese),2001,10(4):226-234.
[20]中国地质科学院地球物理地球化学勘查研究所.中国重要金属矿勘查物探化探方法技术应用[M].北京:地质出版社,2011.Institute of Geophysical&Geochemical Exploration,CAGS,PRC.Technical Application of Geophysical Exploration andGeochemical Exploration Methods of China’s Major Ores(inChinese)[M].Beijing:Geological Press,2011.
[21]秦藻瑚,等.地面高精度磁测技术规程(DZ/T0071-93)[S].北京:中华人民共和国地质矿产部,1994.Qin Z H,et al.The Technical reguilation for high precisionmagnetic survey(DZ/T0071-93)(in Chinese)[S].Beijing:Geology and mineral of the People’s Republic of China,1997.
[22]孙文珂,丁鹏飞.大比例尺重力勘查规范(DZ/T0171-1997)[S].北京:中华人民共和国地质矿产部,1997.Sun W K,Ding P F.The Standard for Large Scale GravityExploration(DZ/T0171-1997)(in Chinese)[S].Beijing:Geology and Mineral of the People’s Republic of China,1997.
[23]金宜声,贺颢,涂承林,等.区域重力调查规范(DZ/T0082-2006)[S].北京:中国地质调查局,2006.Jin Y S,He H,Tu C L,et al.The Standard for RegionalGravity Survey(in Chinese)[S].Beijing:China GeologicalSurvey,2006.
[24]涂承林,韩革命,杨亚斌.区域重力野外工作细则[R].北京:中国地质调查局,2009.Tu C L,Han G M,Yang Y B.The Rules for RegionalGravity Field Work(in Chinese)[R].Beijing:ChinaGeological Survey,2009.
[25]张岭,郝天珧.基于Delaunay剖分的二维非规则重力建模及重力计算[J].地球物理学报,2006,49(3):877-884.Zhang L,Hao T Y.2-D irregular gravity modeling andcomputation of gravity based on Delaunay triangulation.Chinese J.Geophys.(in Chinese),2006,49(3):877-884.
[2]吕久俊,李秀珍,胡远满,等.呼中自然保护区多年冻土活动层厚度的影响因子分析[J].生态学杂志,2007,26(9):1369-1374.Lv J J,Li X Z,Hu Y M,et al.Factors affecting the thicknessof permafrost’s active layer in Huzhong National NatureReserve[J].Chinese Journal of Ecology(in Chinese),2007,26(9):1369-1374.
[3]金浚,杨少平.森林沼泽景观异常查证方法研究成果报告[R].北京矿产地质研究院,中国地质科学院地球物理地球化学勘查研究所,2006.Jin J,Yang S P.The study results report of the anomalyinspection method for forest and swamp landscape(in Chinese)[R].Beijing Institute of Geology for Mineral Resources,Institute of Geophysical&Geochemical Exploration,CAGS,PRC,2006.
[4]杨少平,孔牧.我国东北部森林沼泽景观区域化探工作方法技术研究[R].中国地质科学院地球物理地球化学勘查研究所,2001.Yang S P,Kong M.Work method technology study ofregional geochemical exploration in Northeast China forest andswamp landscape(in Chinese)[R].Institute of Geophysical&Geochemical Exploration,CAGS,PRC,2001.
[5]江为为,管志宁,郝天珧,黄临平.华北地台北缘地球物理场特征与金属矿床预测[J].地球物理学报,2002,45(2):233-245.JIANG W W,GUAN Z.N,HAO T.Y,HUANG L.P.Characters of Geophisical Fields and Forecasting of Metal Mineat the North Edge of Huabei Platform[J].Chinese J.Geophys.(in Chinese),2002,45(2):233-245.
[6]熊光楚.金属矿区磁法勘探的进展与展望[J].地球物理学报,1994,37(增刊),54(2):437-443.Xiong G C.Development of Magnetic Exploration Searchingfor Metallic Ore Deposits in China[J].Chinese J.Geophys.(inChinese),1994,37(Supplement):433-440.
[7]周楠楠,薛国强,陈卫营,等.铁矿采空区的地球物理探测[J].地球物理学进展,2011,26(2):669-674.Zhou N N,Xue G Q,Chen W Y,et al.Geophysicalprospecting to underground iron ore dugged-cave[J].Progressin Geophys.(in Chinese),2011,26(2):669-674.
[8]孙晓猛,刘财,朱德丰,等.大兴安岭西坡德尔布干断裂地球物理特征与构造属性[J].地球物理学报,2011,54(2):433-440.Sun X M,Liu C,Zhu D F,et al.Geophysical features andtectonic attribute of the Derbugan fault in the western slope ofDaHinggan Ling mountains.Chinese J.Geophys.(in Chinese),2011,54(2):433-440.
[9]程培生,汤正江.综合物化探技术在大兴安岭地区区域化探异常查证工作中的应用[J].物探与化探,2009,33(5):497-506.Cheng P S,Tang Z J.The application of the integratedGeophysical-Geochemical technique to the anomaly inspectionin the Da Hinggan Ling landscape region[J].Geophysical&Geochemical Exploration(in Chinese),2009,33(5):497-506.
[10]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 geophysicalmethods to deep metal mine exploration[J].Progress inGeophys.(in Chinese),2011,26(2):701-708.
[11]曾华霖.重力场与重力勘探[M].北京:地质出版社,2005.Zeng H L.Gravity field and gravity exploration(in Chinese)[M].Beijing:Geological Press,2005.
[12]陈善.重力勘探[M].北京:地质出版社,1986.Chen S.Gravity survey(in Chinese)[M].Beijing:Geological Press,1986.
[13]《重力勘探资料解释手册》编写.重力勘探资料解释手册[M].北京:地质出版社,1983.“Manual exploration of gravity data interpretation”WritingGroup.Manual exploration of gravity data interpretation(inChinese)[M].Beijing:Geological Press,1983.
[14]长春地质学院重力教研室.重力勘探[M].北京:地质出版社,1980.Changchun College of Geology Department of Gravity.Gravity Exploration(in Chinese)[M].Beijing:GeologicalPress,1980.
[15]杨春成,等.飞虎山重力方法技术工作报告[R].哈尔滨:黑龙江省地球物理勘察院,2008.Yang C C,et al.The report of gravity exploratin method inFeihu Mountain(in Chinese)[R].Harbin:GeophisycalExploration Institute of Heilongjiang Province,2008.
[16]国家地质总局.重力勘探地质手册[M].北京:地质出版社,1979.National Administration of geology(in Chinese)[M].Beijing:Geological Press,1979.(请补充本条文献信息)
[17]马江水,尤福珍,李仰春.大兴安岭呼中地区矿产资源开发利用潜力分析[J].地质与资源,2006,15(1):38-41.Ma J S,You F Z,Li Y C.Analysis on the developingpotential of mineral resources in Huzhong,Daxinganlingregion[J].Geology and Resources(in Chinese),2006,15(1):38-41.
[18]张元俸,褚向飞.嘎莱奥伊山一带铜多金属地质特征分析[J].黑龙江国土资源,2011,(4):61.Zhang Y F,Chu X F.Geological characteristics analysis ofmetallic menral(Copper,et al.)in Galaiauyi Mountain area[J].Heilongjiang Land and Resources(in Chinese),2011,(4):61.
[19]武广,权恒,李广远.黑龙江省西吉诺山多金属矿点地质特征[J].地质与资源,2001,10(4):226-234.Wu G,Quan H,Li G Y.Geological characteristics of theXijinuoshan polymetal ore field in Heilongjiang Province[J].Journal of Precious Metallic Geology(in Chinese),2001,10(4):226-234.
[20]中国地质科学院地球物理地球化学勘查研究所.中国重要金属矿勘查物探化探方法技术应用[M].北京:地质出版社,2011.Institute of Geophysical&Geochemical Exploration,CAGS,PRC.Technical Application of Geophysical Exploration andGeochemical Exploration Methods of China’s Major Ores(inChinese)[M].Beijing:Geological Press,2011.
[21]秦藻瑚,等.地面高精度磁测技术规程(DZ/T0071-93)[S].北京:中华人民共和国地质矿产部,1994.Qin Z H,et al.The Technical reguilation for high precisionmagnetic survey(DZ/T0071-93)(in Chinese)[S].Beijing:Geology and mineral of the People’s Republic of China,1997.
[22]孙文珂,丁鹏飞.大比例尺重力勘查规范(DZ/T0171-1997)[S].北京:中华人民共和国地质矿产部,1997.Sun W K,Ding P F.The Standard for Large Scale GravityExploration(DZ/T0171-1997)(in Chinese)[S].Beijing:Geology and Mineral of the People’s Republic of China,1997.
[23]金宜声,贺颢,涂承林,等.区域重力调查规范(DZ/T0082-2006)[S].北京:中国地质调查局,2006.Jin Y S,He H,Tu C L,et al.The Standard for RegionalGravity Survey(in Chinese)[S].Beijing:China GeologicalSurvey,2006.
[24]涂承林,韩革命,杨亚斌.区域重力野外工作细则[R].北京:中国地质调查局,2009.Tu C L,Han G M,Yang Y B.The Rules for RegionalGravity Field Work(in Chinese)[R].Beijing:ChinaGeological Survey,2009.
[25]张岭,郝天珧.基于Delaunay剖分的二维非规则重力建模及重力计算[J].地球物理学报,2006,49(3):877-884.Zhang L,Hao T Y.2-D irregular gravity modeling andcomputation of gravity based on Delaunay triangulation.Chinese J.Geophys.(in Chinese),2006,49(3):877-884.