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现代海底块状硫化物矿床储量估算方法探讨
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  • 英文篇名:A Discussion on Reserve Calculation Methods of Modern Seafloor Massive Sulfide Deposits
  • 作者:张柏松 ; 李振清 ; 程杨
  • 英文作者:ZHANG Bai-song;LI Zhen-qing;CHENG Yang;China University of Geosciences;Institute of Mineral Resources,CAGS;Institute of Mineral Resources Research,China Metallurgical Geology Bureau;
  • 关键词:海底硫化物 ; 储量估算 ; 传统几何法 ; 距离反比法 ; 地质统计学
  • 英文关键词:seafloor massive sulfide;;reserve calculation;;traditional geometric method;;inverse distance weighted method;;geostatistical method
  • 中文刊名:DZKT
  • 英文刊名:Geology and Exploration
  • 机构:中国地质大学(北京);中国地质科学院矿产资源研究所;中国冶金地质总局矿产资源研究院;
  • 出版日期:2018-07-15
  • 出版单位:地质与勘探
  • 年:2018
  • 期:v.54;No.478
  • 基金:深地资源勘查项目“青藏高原大陆碰撞铅锌成矿系统深部结构与成矿过程”(编号:2016YFC0600306);; 国际海域资源调查与开发“十二五”课题“多金属硫化物资源评价方法研究”(编号:DY125-12-R-02)和“大西洋中脊多金属硫化物成矿潜力与资源环境评价”(编号:DY125-11-R-01)联合资助
  • 语种:中文;
  • 页:DZKT201804006
  • 页数:12
  • CN:04
  • ISSN:11-2043/P
  • 分类号:67-78
摘要
海底块状硫化物矿床具有巨大的经济价值和良好的开发前景。但是由于勘探难度和技术手段的限制,在全球已经发现的600多个海底热液喷口和硫化物矿床中,不到5%的矿床进行了详细的勘探,进行资源量计算的矿床更是屈指可数。选择适当的方法估算储量对于深海资源开发意义重大。本文系统总结了前人估算海底硫化物储量的方法,并以勘探程度相对较高、数据资料相对丰富的Atlantis-II-Deep矿床和Solwara 1矿床为例,评析了前人采用不同储量计算方法得到的结果和各种方法计算的准确性;针对有一定钻孔数据的TAG硫化物堆丘,采用距离反比法重新计算了储量,并和块段法估算的结果进行对比。得到以下结论:(1)海底硫化物矿体形态是制约储量估算方法适用性的一个重要因素;(2)传统几何法可以在极低勘探条件下估算海底硫化物储量量级;(3)对于海底硫化物储量估算,地质统计学的精度高于传统几何法;(4)较高勘探条件下距离反比法可以与地质统计学相互对照、验证;(5)在一定钻孔数量的条件下,可以应用距离反比法进行海底硫化物储量估算。
        Modern seafloor massive sulfide deposits contain great economic value and a good prospect of development.More than 600 seafloor massive sulfide deposits or hydrothermal areas have been discovered in the global ocean up to now.However,limited by technological difficulty,no more than 5%of these deposits have been explored in detail,and even fewer deposits have been conducted reserve calculation.It is of great significance to use appropriate methods to estimate reserves for deep sea resources development.Through systematical review of calculation methods of the modern seafloor massive sulfide,this work compared and analyzed calculation results by different methods and their accuracy,taken the Atlantis-II-Deep deposit and Solwara 1 deposit which were highly explored and includes abundant data as case studies.Inverse distance weighted method was used to recalculate the reserves of the TAG deposit which was explored by some drillholes,and then the results were compared with that of the block method.The main conclusions are as follows:(1)the shape of the sulfide deposit orebody can affect the applicability of the calculation methods;(2)traditional geometric method can provide an order-of-magnitude resource estimation in poorly explored condition;(3)the geostatistical method has a better calculation accuracy than traditional geometric method for seafloor sulfide reserve;(4)inverse distance weighted method can contrast and check the results of geostatistical methods when the deposit is highly explored;(5)the inverse distance weighted method can be applied to calculate the reserves of the seafloor sulfide deposits with a certain number of drillings.
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