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Risk reduction in Sechahun iron ore deposit by geological boundary modification using multiple indicator Kriging

Journal of Central South University 2014年第5期21卷 2011-2017页

作者： S.Kasmaee F.M.Torab Department of Mining and Metallurgical Engineering Iranian Iron Ore Research Center(IORC)Yazd University Department of Mining and Metallurgical Engineering Yazd University

uncertainty on the geological contacts and the block volumes of the models along boundaries is often a major part of the global uncertainty of reserve *** work introduces a geostatistical technique that has been developed and tested in an iron ore deposit at Bafq mining district,in central Iran,and that,based on a probability criterion,helps to objectively model the geometry of this iron ore *** main problem in reserve estimation of this ore body is its geometrical modeling and uncertainty in geological *** work deals with the geostatistical method of multiple indicator kriging,which is used to determine the real boundaries of ore body in different *** approach has potential to improve project performance and decrease operational *** this purpose,the ore body is separated into two categories including rich iron zone(w(Fe)>45%)and poor iron zone(20%model could separate the whole ore body(poor plus rich)from the waste zone by probability of more than 0.35,which concludes the total reserve of 53 million *** second indicator model applied to separate the rich and poor domains and the results show that the blocks with the estimated probability of equal to or more than 0.4 lay within the rich ore zone consisting of 15.8 million tons reserve.

关键词： geological boundaries multiple indicator kriging risk assessment block model uncertainty Sechahun deposit

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