协同克立格法及其在矿产储量计算中的应用

协同克立格法是多元地质统计学的主要方法，该法能分利用多元信息，有效地提出块段（块体）平均品位及矿产储量估计的精度，介绍了协同区域化理论和协同克立构法及其在我国某优质锰矿床储量计算的实例。     

限制性克立格法在阿舍勒铜矿储量计算中的研究与应用

为提高矿产储量计算的精确性，本文运用了限制性克立格法。给出了限制性克立格法的计算理论，并设计出限制性克立格法在阿舍勒铜矿中的储量计算流程，实现了对阿舍勒铜矿体的限制性克立格储量计算。结果表明，限制性克立格法的储量计算结果（783654．39t）要比普通克立格法的储量计算结果（706541．53t）更接近于实际勘探值（919454t），限制性克立格储量计算方法能够取得较为理想的预测结果。     

正态化克立格法在路腊汞矿储量计算中的应用

正态化克立格法是对传统储量计算方法的改革和创新。其计算过程的科学性和计算结果的正确性在路腊汞矿作了探采对比试算，取得了良好的结果。     

对数正态克立格法及其在驾鹿金矿床储量计算中的应用

简要概述了对数正态克立格法的基本理论和方法,并将其应用于脉状矿床的储量计算,讨论了应用效果与前景.     

福建紫金山铜矿补充储量计算微机应用

介绍紫金山铜矿补充储量计算徽机应用过程，简述应用PKPM软件进行储量计算所作的一系列改进，并为PKPM系列软件的进一步升级提出建设性意见。     

永平铜矿床成矿地球化学及成因分析

通过地球化学研究认为,该区基底含矿建造是成矿的主要物质来源,混合岩化作用是促使成矿物质活化、迁移、富集的主要能量机制,花岗岩浆的侵位对矿床起叠加改造作用.永平铜矿床具明显的衍生成矿特点.     

微机矿产储量计算

用地质统计学（也称克立格法）的方法，在微机上进行矿产储量计算，依据矿床或矿体的地质条件，研究块段矿化空间结构的变化规律，选择代表矿体的矿化规律的参数作为区域化变量进行变异函数的计算和结构分析，建立理论模型进行矿产储量估算。应用克立格法对广东白石嶂细脉型钼矿床各块段进行了储量评估，取得了满意的效果。     

相空间重构克里格法的矿藏储量预测研究

为了提高矿产储量估算的精确性,减小普通克里格法的平滑效应对储量计算的影响,建立了基于相空间重构的克里格法。结合限制性克里格法的计算过程,修订了限制参数及条件并结合实例给出了对原始数据预处理的矿藏储量估计方法和结果。比较普通克里格法的相应结果后,在数值上得到该方法在抑制平滑效应方面较为理想的结论。     

Simple and Ordinary Multigaussian Kriging for Estimating Recoverable Reserves

Multigaussian kriging is used in geostatistical applications to assess the recoverable reserves in ore deposits, or the probability for a contaminant to exceed a critical threshold. However, in general, the estimates have to be calculated by a numerical integration (Monte Carlo approach). In this paper, we propose analytical expressions to compute the multigaussian kriging estimator and its estimation variance, thanks to polynomial expansions. Three extensions are then considered, which are essential for mining and environmental applications: accounting for an unknown and locally varying mean (local stationarity), accounting for a block-support correction, and estimating spatial averages. All these extensions can be combined; they generalize several known techniques like ordinary lognormal kriging and uniform conditioning by a Gaussian value. An application of the concepts to a porphyry copper deposit shows that the proposed “ordinary multigaussian kriging” approach leads to more realistic estimates of the recoverable reserves than the conventional methods (disjunctive and simple multigaussian krigings), in particular in the nonmineralized undersampled areas.     

西藏多不杂斑岩铜矿资源储量数据集

西藏多不杂铜矿是班公湖-怒江成矿带近年来发现的第一个大型斑岩铜矿床。该矿床位于班公湖-怒江缝合带北缘多不杂构造岩浆弧中,形成于早白垩世班公湖-怒江多岛弧-盆系演化时期,成矿年龄为120 Ma,成矿与侵位于早白垩统美日切错组地层中的石英闪长玢岩、花岗闪长斑岩有关。目前已探明铜、金资源量分别为230万吨,92吨,平均品位分别为0.51%、0.2 g/t,已达超大型矿床规模,是国家矿产资源战略储备基地。本数据集是在2005—2010年对该矿区矿产勘查所取得的宝贵数据基础上,开展的数据库建设的成果,采用10个数据表,重点汇集了多不杂铜矿单工程工业矿体和低品位矿体的品位数据及其计算结果,并对与储量计算有关的所有细节性数据做了系统性的归并整理。     

江西永平铜多金属矿床岩相学、矿相学特征及其意义

永平矿床位于江西省铅山县境内,为江西省规模第二大的富铜多金属矿床。在永平铜矿火烧岗采场进行野外地质调查、样品采集、室内岩相学与矿相学和电镜能谱研究的基础上,确定矿区内主要的容矿围岩为互层状安山-玄武岩和钙铁榴石矽卡岩,其中,夹有灰质硅质岩和片岩,以及层状与透镜状矿体,为典型的海底火山喷发环境。大量胶状黄铁矿的存在表明曾经发生过大规模的热水沉积作用;胶状黄铁矿普遍重结晶和钙铁榴石矽卡岩本身就代表着变质作用（或矽卡岩化作用）,在成矿过程中发挥了重要作用;后期强烈的热液蚀变对成矿物质进一步富集成矿起到促进作用。有用元素除铜与钨外,铋与铟的含量也达到最低工业品位的要求,新发现含铼白钨矿、含稀土沥青铀矿与一系列金属铋和碲的矿物：自然铋、辉铋矿、硫铜铋矿、含银辉铜铋矿、硫银铋矿、沃仑斯基矿、碲铋矿、叶碲铋矿、铁铜碲硫铋矿、含锝碲银矿、辉铋碲银矿(?)、叶碲铋-碲银矿(?)等。     

地质统计学储量计算方法在紫金山铜矿床中的应用

介绍了地质统计学储量计算方法的基本原理及主要技术关键,简述地质统计学储量计算方法在紫金山铜矿床储量计算过程的成功应用,并对地质统计学储量计算流程加以说明。     

Conditioning Simulations of Gaussian Random Fields by Ordinary Kriging

Conditioning realizations of stationary Gaussian random fields to a set of data is traditionally based on simple kriging. In practice, this approach may be demanding as it does not account for the uncertainty in the spatial average of the random field. In this paper, an alternative model is presented, in which the Gaussian field is decomposed into a random mean, constant over space but variable over the realizations, and an independent residual. It is shown that, when the prior variance of the random mean is infinitely large (reflecting prior ignorance on the actual spatial average), the realizations of the Gaussian random field are made conditional by substituting ordinary kriging for simple kriging. The proposed approach can be extended to models with random drifts that are polynomials in the spatial coordinates, by using universal or intrinsic kriging for conditioning the realizations, and also to multivariate situations by using cokriging instead of kriging.     

Mineral Reserves of Gold and Copper in China Maintain Growth Momentum During 2013

正On 27th February 2014,China’s Ministry of Land and Resources announced the latest fruits of exploration in China for2013.Principally distributed in Inner Mongolia,Henan,Shanxi,Shandong,Xinjiang and Yunnan,there are 165 newly discovered mineral producing areas,including 58 large-and 107 medium-sized.Mineral species with more than 10     

矿产资源储量计算小助手程序简介

根据几何法储量计算过程,编制了若干实用小程序,组装成储量计算小助手.程序包括矿石平均品位、矿体厚度计算,小体重线性回归分析、共伴生元素(矿石品位与厚度)相关分析,矿体品位(厚度)变化系数计算,样品内(外)检合格率统计,经纬度与直角坐标转换,以及单工程矿体圈定、综合指标矿体圈定和矿体体积、矿石量、金属量计算等问题,极大地...     

江西永平铜矿区古构造应力场与构造演化

利用多重反演方法(Multiple Inverse Method,MIM)恢复永平铜矿多期古构造应力场,该方法可以划分形成断层擦痕的多个古构造应力期次.研究表明,永平矿区印支期以来至少受到3期古构造应力场作用,进而探讨了永平铜矿构造演化历史.第一期构造应力场为EW方向的近水平挤压,形成轴向近SN的褶皱,以及走向近南北的逆断层;第二期构造应力场为NW-SE方向近水平挤压,伴随着岩体的侵入,导致层间破碎带的矽卡岩化和矿体形成;第三期构造应力场为EW方向的再次挤压作用,造成控矿断层推覆距离加大,混合岩和矽卡岩破碎带向西逆冲推覆到晚古生代地层之上.     

Conditioning of coefficient matrices of Ordinary Kriging

The solution of a set of linear equations is central to Ordinary Kriging. Computers are commonly applied because of the amount of data and work involved. There has, until recently, been little attention devoted toward the conditioning of kriging matrices. This article considers implications of conditioning upon numerical stability, instead of on robustness which has been the main focus of past work. The effect of properties of the stationary covariance matrix on the conditioning of the kriging matrix is discussed. The relationship between the covariance and autocorrelation functions allows some conclusions about the conditioning of covariance matrices, based on past work in deconvolution. The conditioning of some coefficient matrices of stationary kriging, defined in terms of either the semivariogram or the covariance, is examined.