金属矿山
金屬礦山
금속광산
METAL MINE
2015年
7期
80-85
,共6页
储量估算%协同克里格法%条带状效应%拟牛顿法%权值校正
儲量估算%協同剋裏格法%條帶狀效應%擬牛頓法%權值校正
저량고산%협동극리격법%조대상효응%의우돈법%권치교정
Reserves estimation%Co-Kriging method%Banded effect%Quasi-Newton method%Weight calibration
目前铜多金属矿的钻孔分析数据多呈条带状分布,并且多金属之间相互影响,采用传统的协同克里格法对该类条带状分布的数据进行插值分析时,易出现端点数据权值偏大的现象,即条带状效应。对此,以协同克里格法为基础,提出了一种铜多金属矿储量估算插值方法,即权值校正的协同克里格插值方法。首先对原始钻孔数据进行统计分析、特异值处理以及样品组合处理,并对产生条带状效应的权值系数进行分析；然后采用拟牛顿法对协同克里格法插值得到的权值进行校正。以2012年西藏甲玛矿区勘探工程的铜多金属矿床钻孔品位数据为例进行储量估算,即以Cu品位为主区域化变量,Ag品位为协同区域化变量,计算了各自的试验变差函数和交差试验变差函数,并对协同克里格法以及权值校正的协同克里格法的插值效果进行了分析。结果表明,权值校正的协同克里格法插值效果较优,对于铜多金属矿的地质属性分析、储量估算具有一定的参考价值。
目前銅多金屬礦的鑽孔分析數據多呈條帶狀分佈,併且多金屬之間相互影響,採用傳統的協同剋裏格法對該類條帶狀分佈的數據進行插值分析時,易齣現耑點數據權值偏大的現象,即條帶狀效應。對此,以協同剋裏格法為基礎,提齣瞭一種銅多金屬礦儲量估算插值方法,即權值校正的協同剋裏格插值方法。首先對原始鑽孔數據進行統計分析、特異值處理以及樣品組閤處理,併對產生條帶狀效應的權值繫數進行分析；然後採用擬牛頓法對協同剋裏格法插值得到的權值進行校正。以2012年西藏甲瑪礦區勘探工程的銅多金屬礦床鑽孔品位數據為例進行儲量估算,即以Cu品位為主區域化變量,Ag品位為協同區域化變量,計算瞭各自的試驗變差函數和交差試驗變差函數,併對協同剋裏格法以及權值校正的協同剋裏格法的插值效果進行瞭分析。結果錶明,權值校正的協同剋裏格法插值效果較優,對于銅多金屬礦的地質屬性分析、儲量估算具有一定的參攷價值。
목전동다금속광적찬공분석수거다정조대상분포,병차다금속지간상호영향,채용전통적협동극리격법대해류조대상분포적수거진행삽치분석시,역출현단점수거권치편대적현상,즉조대상효응。대차,이협동극리격법위기출,제출료일충동다금속광저량고산삽치방법,즉권치교정적협동극리격삽치방법。수선대원시찬공수거진행통계분석、특이치처리이급양품조합처리,병대산생조대상효응적권치계수진행분석；연후채용의우돈법대협동극리격법삽치득도적권치진행교정。이2012년서장갑마광구감탐공정적동다금속광상찬공품위수거위례진행저량고산,즉이Cu품위위주구역화변량,Ag품위위협동구역화변량,계산료각자적시험변차함수화교차시험변차함수,병대협동극리격법이급권치교정적협동극리격법적삽치효과진행료분석。결과표명,권치교정적협동극리격법삽치효과교우,대우동다금속광적지질속성분석、저량고산구유일정적삼고개치。
At present,the drilling analysis data of Cu-polymetallic ore present as a ribbon,with the interaction of multi-metal. When using the classical Co-Kriging method to conduct interpolation analysis of the data distribute as a ribbon,it is apt to occur that the weight of endpoint data become too large,called as banded effect. In order to reduce the effect of banded effect in the process of data interpolation, based on the Co-Kriging method, a interpolation method for reserves estimation of the banned Cu-polymetallic deposit is proposed,that is the Co-Kriging method with calibration weights. Firstly,the original drilling data is processed by statistical analysis,specific values and composite samples,the weight coefficients with banned effect are analyzed in detail;then,the Quasi-Newton method is adopted to calibrate the weight values obtained by the Co-Kriging meth-od. Taking the drilling grade data of 2012 Tibet Jiama copper polymetallic exploration engineering as an example,the reserves of the copper polymetallic deposit is estimated,in particular,Cu grade is regarded as the main regionalized variable and Ag grade is regarded as the synergy regionalized variable to calculate the experimental variation function and cross experimental variation function of Cu and Ag respectively. Besides that,the interpolation results of the Co-Kriging method and Co-Kriging method with calibration weights are analyzed. The research results show that the performance of the Co-Kriging method with calibration weights is superior to the classical Co-Kriging method,and it has some reference for geological attribute analysis and reserve estimation of Cu-polymetallic deposit.
