收稿日期: 2015-06-29
修回日期: 2015-12-17
网络出版日期: 2016-04-05
基金资助
中国地质调查局地质调查专项“甘肃省文县阳山金矿深部远景调查”(编号:12120114038301)资助
Application of CSAMT to Deep Mine Prospecting in the Gaoloushan Gold Mine
Received date: 2015-06-29
Revised date: 2015-12-17
Online published: 2016-04-05
高楼山金矿位于甘肃省文县地区,金矿脉主要赋存于下泥盆统,赋存岩石主要为黄铁矿化较强的低阻破碎蚀变千枚岩。常规直流电法在矿区施工时存在低阻屏蔽和勘探深度太浅的问题,难以满足深部找矿的需求。而可控源音频大地电磁法(CSAMT)以大地电磁(MT)法为基础,具有抗干扰能力强、勘探深度大、布设极距小以及对地形要求较低等诸多优点,因此被广泛应用于固体矿产勘探中。结合早期在矿化密集区域布设的1条CSAMT剖面,寻找地下低阻破碎蚀变带的位置,并开展异常钻孔验证结果表明,该方法在高楼山金矿深部找矿中切实有效,为在高楼山金矿大规模使用提供了依据。
关键词: 可控源音频大地电磁法; 高楼山金矿; 深部找矿; 甘肃省
喻春 , 陈永凌 , 李建忠 , 赵维新 , 谢丹 . 可控源音频大地电磁法在高楼山金矿深部找矿中的应用[J]. 黄金科学技术, 2016 , 24(1) : 59 -63 . DOI: 10.11872/j.issn.1005-2518.2016.01.059
The gold veins of Gaoloushan gold mine in Wenxian,Gansu Province primarily located at the lower Devonian strata,and the characteristic of ore rock occurrence is consisted of low resistance and broken alteration phyllite with highly pyritization.Because direct-current electricity can not penetrate carbonaceous strata and its underground transmission is not deep enough,also it is hard to meet in-depth exploration needs.However,the Controlled Source Audio-frequency Magnetotelluric Method (CSAMT) based on the Magnetotelluric (MT) Method,with a strong anti-jamming capability,greater exploration depth,small layout pole pitch,and other advantage such as lower requires terrain,was extensively applied in the solid mineral exploration.We designed a CSAMT profile in mineralized zone with the earlier geological data so as to find the location of the fracture and alteration phyllite,and then it provided some evidence to in-depth drill and decreased its costs.After comparing with the drill results,obviously,CSAMT is an effective way for in-depth exploration in the Gaoloushan gold mine.
Key words: CSAMT; Gaoloushan gold mine; deep prospecting; Gansu Province
[1] 吴春俊,王金荣,郭俊华,等.甘肃文县高楼山金矿带花岗岩岩石地球化学特征及其成矿意义[J].矿产与地质,2009,23(4):345-351.
[2] 毛世东.甘肃省阳山超大型金矿地球化学[D].北京:中国科学院大学,2011.
[3] 吴春俊,余金元,王金荣,等.甘肃阳山矿带地质特征及找 矿靶区优选[J].黄金科学技术,2014,22(6):33-38.
[4] 于昌明.CSAMT方法在寻找隐伏金矿中的应用[J].地球物理学报,1998,(1):133-138.
[5] Garcia X,Bornr D,Pedersn L B.Electric and magnetic galvanic distortion decomposition of tensor CSAMT data:Application to data from the Buchans Mine (Newfoundland,Canada)[J].Geophysical Journal International,2003,154(3):957-969.
[6] 郭宝东,蒋丽丽,袁兮尊.浅析可控源音频大地电磁(CSAMT)方法及应用[J].中国科技博览,2011,(13):92.
[7] 杨轮凯,刘宏.地热勘探新技术——大功率可控源大地电磁测深法[C]//全国油区城镇地热开发利用经验交流会论文集.大庆:中国石油学会,2003.
[8] 范德旺.可控源音频大地电磁法的应用探讨[J].福建地质,2013,(1):52-59.
[9] 许伟.CSAMT在深埋长隧道勘察中的研究与应用[D].成都:西南交通大学,2011.
[10] 石昆法.可控源音频大地电磁法理论与应用[M].北京:科学出版社,1990.
[11] 黄兆辉,底青云,侯胜利.CSAMT的静态效应校正及应用[J].地球物理学进展,2006,21(4):1290-1295.
[12] 李金都,王学潮.南水北调西线工程区活动断层CSAMT技术探测研究[J].岩石力学与工程学报,2004,23(17):2932-2936.
[13] 李建忠,余金元,胡琴霞,等.甘肃阳山金矿带地质勘查进展与找矿远景[J].黄金科学技术,2011,19(6):1-6.
[14] 喻春,熊韬,赵维新.衍生指数法在阳山金矿激电测深中的应用[J].黄金科学技术,2014,22(3):43-47.
[15] 文成敏.甘肃省阳山金矿带金矿成矿特征及矿床成因研究[J].四川地质学报,2006,(4):223-227.
[16] 袁士松,张继武,齐金忠,等.甘肃省阳山金矿构造控矿模式[J].黄金地质,2004,10(4):23-27.
[17] 刘明,王东华.CSAMT法在高密度数据采集频率的应用[J].物探与化探,2014,(6):1203-1206.
/
〈 | 〉 |