| 杨昌华,肖章程,姜永果,周家喜,陶永林,杨丰铭,李祖义,左鑫灿,杨金富,沈良.滇西南景谷地区铜矿床地质特征与有效勘查技术组合:以曾家村铜矿为例[J].矿产勘查,2025,16(8):1855-1869 |
| 滇西南景谷地区铜矿床地质特征与有效勘查技术组合:以曾家村铜矿为例 |
| Geological characteristics and effective exploration techniques combination of Cu deposits in Jinggu area, Southwestern Yunnan Province: A case study of the Zengjiacun Cu deposit |
| 投稿时间：2025-06-26 |
| DOI：10.20008/j.kckc.202508003 |
| 中文关键词: 民乐铜矿集区 有效勘查技术组合 找矿模型 滇西南景谷地区 |
| 英文关键词: Minle copper ore concentration area effective exploration technology suite prospecting model Jinggu area, southwestern Yunnan |
| 基金项目:本文受云南省重大科技专项重点研发计划项目(202402AB080006)、云南省新一轮找矿突破战略行动暨地勘基金项目(Y202403)、云南大学关键金属成矿与找矿预测创新团队(2021-3)及云南省关键金属成矿与找矿预测硕士生导师团队(2023-5)联合资助。 |
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| 中文摘要: |
| 滇西南景谷民乐铜矿矿集区位于三江造山带之兰坪—普洱陆块之内的云县—景洪火山弧铜多金属矿带中部，目前已探明铜矿床 7个，包括大型 1个、中型 1个及小型 5个，显示该区具有巨大的铜矿资源找矿潜力。然而，该区地质构造复杂、矿床类型多样，亟需建立具更强针对性的高效勘查技术体系以期取得进一步找矿突破。本研究旨在解决该区找矿勘查的关键技术瓶颈，探索并验证一套适用于沉积-改造型铜矿床的高效勘查方法组合。通过多种方法实验及应用，创新性研发集成了“研-分-缩-定-验-模-攻”(即“综研先行→分类勘查→化探缩面→物探定位→工程验证→攻深增储”)的找矿勘查技术组合，在综合分析研究该区资料基础上，首先利用化探成果缩小勘查面积，圈定重点找矿靶区，通过开展物探工作，实现矿体深部定位，进而开展钻探工程验证，最终实现矿区找矿增储。本文以曾家村沉积-改造型铜矿床为例，在系统梳理矿床地质特征、总结成矿规律、建立成矿模式与找矿模型基础上，构建并应用了“中小比例尺水系沉积物测量缩面+构造填图+构造地球化学弱异常信息提取+大比例尺高精度磁测圈定含矿背斜构造+大功率时频电磁测深定位预测隐伏含矿结构面+钻探工程验证”的有效勘查技术方法组合，显著提高了勘查效率和深部找矿预测精度，为矿集区内同类矿床找矿增储提供了可靠的技术支撑，具有重要的推广应用价值。 |
| 英文摘要: |
| The Minle copper ore concentration area in the Jinggu region of southwestern Yunnan Province is lo-cated in the middle of the Yunxian-Jinghong volcanic arc copper polymetallic ore belt in the Lanping-Pu 'er blockof the Sanjiang Orogenic Belt. Currently, seven copper deposits have been identified, including one large deposit,one medium-sized deposit and five small deposits, indicating that this area has huge potential for copper resourceexploration. However, the geological structure in this area is complex and the types of ore deposits are diverse.There is an urgent need to establish a more targeted and efficient exploration technology system in order to achievefurther breakthroughs in mineral exploration. This study aims to address the key technical bottlenecks in mineral ex-ploration in this area and explore and verify a set of efficient exploration method combinations suitable forsedimental-modified copper deposits. Through various experimental methods and applications, an innovative combi-nation of mineral exploration technologies integrating "research -division -reduction -determination -verifica-tion -model -attack" (i.e., "Comprehensive research first → classified exploration → geochemical exploration re-duction → geophysical exploration positioning → engineering verification → deep attack and reserve increase")was developed. Based on the comprehensive analysis and research of the data in this area, the exploration area wasfirst reduced by using geochemical exploration results, and key mineral exploration target areas were delineated.Through the implementation of geophysical exploration work, the deep positioning of the ore body is achieved, andthen drilling engineering verification is carried out, ultimately realizing the exploration and reserve increase in themining area. This paper takes the Zengjiacun sedimentary-reworked copper deposit as an example. Based on a sys-tematic review of the geological characteristics of the deposit, a summary of the mineralization laws, and the estab-lishment of the mineralization model and prospecting model, an effective exploration technology and method combi-nation of "small and medium-sized scale water system sediment measurement reduction + structural mapping + ex-traction of weak anomaly information in structural geochemistry + large-scale high-precision magnetic measure-ment for delineating ore-bearing anticline structures + high-power time-frequency electromagnetic sounding andpositioning for predicting concealed ore-bearing structural planes + drilling engineering verification" was con-structed and applied, significantly improving the exploration efficiency and the accuracy of deep mineral explorationprediction. It provides reliable technical support for the exploration and reserve increase of similar deposits in theore concentration area and has significant value for promotion and application. |
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