您目前所在的位置:首页 - 期刊简介 - 详细页面

铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 8    No. 2    June 1998

[PDF Download]    [Flash Online]

    

OPTIMIZATION OF CUT-OFF GRADE IN OPEN-PIT BASED ON CONTROL THEORY
Xie Yingliang

Department of Management, South Institute of Metallurgy, Ganzhou 341000, P. R. China

Abstract:A new method for the optimization of cut-off grade in open-pit was put forward, which was based on control theory. After a brief introduction to the analytical framework of calculus of variations with an overall equality constraint, a mathematical model for selecting an optimum cut-off grade function was constructed, which aimed at the maximization of total present value of an open-pit. Then a comparison was made, and it was shown that the new method yielded the same solution results as the traditional ones, and in some cases it avoided the iteration process which was needed by those traditional methods due to the mutural determination of cut-off grade and the maximum total present value of a mine. At last a calculation example was given.

 

Key words: cut-off grade open-pit control theory

ISSN 1672-7029
CN 43-1423/U

主管:中华人民共和国教育部 主办:中南大学 中国铁道学会 承办:中南大学
湘ICP备09001153号 版权所有:《铁道科学与工程学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市韶山南路22号 邮编:410075
电 话:0731-82655133,82656174   传真:0731-82655133   电子邮箱:jrse@mail.csu.edu.cn