Journal of Jilin University(Earth Science Edition) ›› 2017, Vol. 47 ›› Issue (1): 106-112.doi: 10.13278/j.cnki.jjuese.201701110

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Discussion on the Block Size Setting During Geostatistics Reserves Estimation

Zhang Yankai1,2, Li Keqing1,2, Yang Shihai3, Li Di4, Gong Mingshan5   

  1. 1. State Key Laboratory of High-Efficient Mining and Safety of Metal Mines/University of Science and Technology Beijing, Ministry of Education, Beijing 100083, China;
    2. School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China;
    3. Mining Funds Department of Shandong Gold(Beijing) Industrial Investment Co., Ltd, Beijing 100029, China;
    4. Changchun Gold Design Institute, Changchun 130000, China;
    5. Metal Project Department, China Railway Resources Group Co. Ltd, Beijing 100039, China
  • Received:2016-03-18 Online:2017-01-26 Published:2017-01-26
  • Supported by:
    Supported byNational High-Tech Research & Development Program(2012AA062200)

Abstract: Resources and reserves estimation play an important role in different stages such as mineral exploration, mining design, production, management and so on. Geostatistics method has many advantages over traditional method in reserves estimation and is becoming more and more widely used. Reasonable setting of block size has a great influence on reserve estimation results, however, in practice, block size is usually defined on the basis of personal experience or subjective judgment, which is a lack of scientific support. In this study, after summarizing predecessors' work and experience, block size selection for reserves estimation was studied for the stages of exploration and production respectively. According to the characteristics of different stages, the relationships between block size and grade, reserves, estimation variance, selective mining unit were discussed for each stage and advices on reasonable block size selection were provided. Moreover, a large molybdenum deposit was used as engineering background to undertake in-depth analysis and experiments. It is concluded that block size selection not only affects grade variation and ore volume calculation but also the economic and technical evaluation of mining. Block size of 15 m×15 m×15 m is recommended for the reserve estimation of this deposit.

Key words: block size, estimation variance, grade-ton curve, selective mining unit, geostatistics, reserves estimation

CLC Number: 

  • P624.7
[1] 侯景儒,黄竞先.地质统计学在固体矿产资源/储量分类中的应用[J].地质与勘探,2001,37(6):61-66. Hou Jingru,Huang Jingxian.Application of Geostatistics in Classification for Resources/Reserves of Solid Fuels and Mineral Commodities[J].Geology and Exploration,2001,37(6):61-66.
[2] 张剑波,李谢清,石阳,等.油藏数值模拟中地质模型的建模流程与方法[J].吉林大学学报(地球科学版),2015,45(3):860-868. Zhang Jianbo,Li Xieqing,Shi Yang,et al.Processes and Technology of Three-Dimensional Geological Modeling System in Numerical Reservoir Simulation[J].Journal of Jilin University(Earth Science Edition),2015,45(3):860-868.
[3] 初道忠,王青,任凤玉,等.谦比西铜矿石品位分布的地质统计学研究[J].金属矿山,2006,363(9):57-59. Chu Daozhong,Wang Qing,Ren Fengyu,et al.Study on Grade Distribution of Chambishi Copper Ore Using Geological Statistics[J].Metal Mine,2006,363(9):57-59.
[4] 郭怀成,周丰,刀谞.地统计方法学研究进展[J].地理研究,2008,27(5):1191-1202. Guo Huaicheng,Zhou Feng,Dao Xu.State-of-Art on Geostatistical Methodology[J].Geographical Research,2008,27(5):1191-1202.
[5] 高航校,任小华,郭健.资源量分类中勘查工程间距的确定方法研究[J].地质与勘探,2014,50(2):340-345. Gao Hangxiao,Ren Xiaohua,Guo Jian.A Method of Determining Grid Spacing in Surveys for Classification of Mineral Reserves[J].Geology and Exploration,2014,50(2):340-345.
[6] 杨利容.复杂矿体结构三维建模与储量计算方法研究:以某地区铀矿床为例[D].成都:成都理工大学,2013. Yang Lirong.Research on 3D Modeling of Complex Orebody Structure and Reserve Calculation with Uranium Deposits as an Example[D].Chengdu:Chengdu University of Technology,2013.
[7] 宋宇,崔志勇.袁家村铁矿矿床地质模型[J].矿业工程,2014,12(3):60-62. Song Yu,Cui Zhiyong.Geological Model for Yuanjiacun Iron Ore Deposit[J].Mining Engineering,2014,12(3):60-62.
[8] 倪平泽,刘修国,李超岭,等.3D矿床建模技术在数字矿产勘查中的应用[J].地球科学:中国地质大学学报,2010,35(3):444-452. Ni Pingze,Liu Xiuguo,Li Chaoling,et al.3D Ore Deposit Modeling and Application in Digital Mineral Survey[J].Earth Science:Journal of China University of Geosciences,2010,35(3):444-452.
[9] 李晓晖,袁峰,张明明,等.基于Surpac的垂直断面资源储量估算方法研究与实现[J].吉林大学学报(地球科学版),2015,45(1):156-165. Li Xiaohui,Yuan Feng,Zhang Mingming,et al.Research and Implementation of Section Method in Reserve Estimation Based on Surpac[J].Journal of Jilin University(Earth Science Edition),2015,45(1):156-165.
[10] 任娜.基于八叉树的复杂矿体块体模型构建方法研究[D].武汉:中国地质大学,2012. Ren Na.Research on Construction Method of Block Model for Complicated Ore Body Based on the Octree[D].Wuhan:China University of Geosciences,2012.
[11] 孙玉建.资源储量估算中确定合理的矿体离散尺寸[J].中国矿业,2011,20(7):14-15. Sun Yujian.To Define Reasonable Dispersing Size for Orebody in Estimation of Mineral Resources and Reserves[J].China Mining,2011,20(7):14-15.
[12] 赵战锋,周坤,王玲.三维地质建模中设定矿块尺寸探讨[J].有色金属(矿山部分),2012,64(4):83-86. Zhao Zhanfeng,Zhou Kun,Wang Ling.Discussion on Block Size Setting in 3D Geological Modeling[J].Non-Ferrous Metals,2012, 64(4):83-86.
[13] 程志刚.试论最低工业品位和矿块大小[J].有色金属(矿山部分),1991,6(3):32-34. Cheng Zhigang.Study on the Lowest Industrial Grade and Block Size[J].Non-Ferrous Metals,1991,6(3):32-34.
[14] 司永年.金属露天矿分采单元规格问题[J].金属矿山,1983,7(7):20-25. Si Yongnian.Research for Unit Specification Problem on Metallic Open Pit Mining[J].Metal Mine,1983,7(7):20-25.
[15] 陈希廉.矿体三维模型与计算机地质制图发展方向探讨[J].有色金属矿产与勘查,2000,9(1):19-23. Chen Xilian.Study on the Development Direction of Ore Body Three-Dimensional Geological Modeling and the Computer Graphics[J].Geology Exploration for Non-Ferrous Metals,2000,9(1):19-23.
[16] 贾明涛,潘长良,王李管.克服地质统计学矿床建模中主观因素影响技术研究[J].地质与勘探,2003,39(4):73-77. Jia Mingtao,Pan Changliang,Wang Liguan.The Technology to Overcome Effects of Subjective Factors in Deposit Modeling Using Geostatistics[J].Geology and Exploration,2003,39(4):73-77.
[17] 袁怀雨,刘保顺,李克庆.合理入选品位整体动态优化[J].北京科技大学学报,2002,24(3):239-242. Yuan Huaiyu,Liu Baoshun,Li Keqing.United Dynamic Optimization Study on the Rational Beneficiation Feed Grade[J].Journal of University of Science and Technology Beijing,2002,24(3):239-242.
[18] 李克庆,秦元萍,刘保顺,等.铁精矿品位优化通用系统[J].北京科技大学学报,2005,27(1):114-118. Li Keqing,Qin Yuanping,Liu Baoshun,et al.General Optimization System of Iron Concentrate Grade[J].Journal of University of Science and Technology Beijing,2005,27(1):114-118.
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