Dynamic optimization for open pit mining limit
YANG Biao
LUO Zhou-quan
LIAO Jiang-nan
WU Xiu-qiong
LIU Xiao-ming
Abstract：Calculated the attribute valuation of the deposit model according to different cut-off grade,and formed 3D value model.By using the moving cone and L-G method,got a series preliminary optimization results.The time value implanted was into deposit mass model by arranging schedule,and calculated the annual cash flow of every scheme.then got NPV through discount,finally determined the best optimization scheme through comparing NPV.Taking a complex open pit mine as example,by using Surpac and Minesched,realized the dynamic optimization definition of final mining limit.The results show that static optimization scheme is unfeasible,and dynamic optimization scheme is in the ascendant in economic benefit aspect.
Keywords：open pit minemining limitdynamic optimizationcut-off gradescheduleNPV
Publication Date：2010-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 368-372 )