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Exploration and Mining Geology; January 2004; v. 13; no. 1-4; p. 139-146; DOI: 10.2113/gsemg.13.1-4.139
© 2004 Canadian Institute of Mining, Metallurgy & Petroleum
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GET: A Function for Preferential Site Selection of Additional Borehole Drilling

A.A. HASSANIPAK

Department of Mining Engineering, University of Tehran Tehran, Iran

M. SHARAFODIN

Research Institute of Petroleum Industry of Iran Tehran, Iran

The essential aims of additional borehole drilling are to improve the reliability of grade and tonnage estimates in each reserve class and to increase ore tonnages. The "GET" function presented in this paper considers strategies for achieving both of these goals simultaneously, and therefore is advantageous for selecting sites for additional boreholes. The "GET" function is either a linear or a non-linear product of three variables G, E, and T: f(G,E,T,) = G{alpha}EßT{gamma} where the values of any or all of the exponents {alpha}, ß, and {gamma} may differ from unity at the discretion of the user. G and E are the average estimated block grade and the average estimation error for ore blocks in one vertical column, and T is the compounded ore thickness within the column. To illustrate its utility, the GET function has been used for determination of the most advantageous sites for additional drilling in the Shah-Kuh Pb-Zn deposit in west central Iran.






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