Where to make the transition from open-pit to underground? Using integer programming

J. Chung, E. Topal, A. K. Ghosh

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The transition from open pit (OP) to underground (UG) operation is one of the challenging mining engineering issues. Mines that have the potential to transition from OP mining to UG mining will eventually come to a 'transition point' where the decision needs to be taken whether to extend the pit or switch to UG mining. In this paper we present a new integer programming (IP) formulation to obtain the optimal transition point from OP to UG mining. The proposed model is implemented on a threedimensional (3D) gold deposit and a two-dimensional (2D) case study is used to demonstrate the validity of the model. Due to the large number of variables, strategies are proposed to shorten the solution time. The proposed model has successfully determined the optimal transition point and generated a significantly better undiscounted profit than that of the traditional approach.

Original languageEnglish
Pages (from-to)801-808
Number of pages8
JournalJournal of the Southern African Institute of Mining and Metallurgy
Volume116
Issue number8
DOIs
Publication statusPublished - Aug 1 2016
Externally publishedYes

Fingerprint

Integer programming
Mining engineering
Gold deposits
Open pit mining
Profitability
Switches
gold

Keywords

  • Integer Programming
  • Mine Optimization
  • Open Pit
  • Transition Point
  • Underground

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Metals and Alloys
  • Materials Chemistry

Cite this

Where to make the transition from open-pit to underground? Using integer programming. / Chung, J.; Topal, E.; Ghosh, A. K.

In: Journal of the Southern African Institute of Mining and Metallurgy, Vol. 116, No. 8, 01.08.2016, p. 801-808.

Research output: Contribution to journalArticle

@article{9301165b9acf4b488f9b8e86bc9bd0a0,
title = "Where to make the transition from open-pit to underground? Using integer programming",
abstract = "The transition from open pit (OP) to underground (UG) operation is one of the challenging mining engineering issues. Mines that have the potential to transition from OP mining to UG mining will eventually come to a 'transition point' where the decision needs to be taken whether to extend the pit or switch to UG mining. In this paper we present a new integer programming (IP) formulation to obtain the optimal transition point from OP to UG mining. The proposed model is implemented on a threedimensional (3D) gold deposit and a two-dimensional (2D) case study is used to demonstrate the validity of the model. Due to the large number of variables, strategies are proposed to shorten the solution time. The proposed model has successfully determined the optimal transition point and generated a significantly better undiscounted profit than that of the traditional approach.",
keywords = "Integer Programming, Mine Optimization, Open Pit, Transition Point, Underground",
author = "J. Chung and E. Topal and Ghosh, {A. K.}",
year = "2016",
month = "8",
day = "1",
doi = "10.17159/2411-9717/2016/v116n8a13",
language = "English",
volume = "116",
pages = "801--808",
journal = "Journal of the Southern African Institute of Mining and Metallurgy",
issn = "2225-6253",
publisher = "South African Institute of Mining and Metallurgy",
number = "8",

}

TY - JOUR

T1 - Where to make the transition from open-pit to underground? Using integer programming

AU - Chung, J.

AU - Topal, E.

AU - Ghosh, A. K.

PY - 2016/8/1

Y1 - 2016/8/1

N2 - The transition from open pit (OP) to underground (UG) operation is one of the challenging mining engineering issues. Mines that have the potential to transition from OP mining to UG mining will eventually come to a 'transition point' where the decision needs to be taken whether to extend the pit or switch to UG mining. In this paper we present a new integer programming (IP) formulation to obtain the optimal transition point from OP to UG mining. The proposed model is implemented on a threedimensional (3D) gold deposit and a two-dimensional (2D) case study is used to demonstrate the validity of the model. Due to the large number of variables, strategies are proposed to shorten the solution time. The proposed model has successfully determined the optimal transition point and generated a significantly better undiscounted profit than that of the traditional approach.

AB - The transition from open pit (OP) to underground (UG) operation is one of the challenging mining engineering issues. Mines that have the potential to transition from OP mining to UG mining will eventually come to a 'transition point' where the decision needs to be taken whether to extend the pit or switch to UG mining. In this paper we present a new integer programming (IP) formulation to obtain the optimal transition point from OP to UG mining. The proposed model is implemented on a threedimensional (3D) gold deposit and a two-dimensional (2D) case study is used to demonstrate the validity of the model. Due to the large number of variables, strategies are proposed to shorten the solution time. The proposed model has successfully determined the optimal transition point and generated a significantly better undiscounted profit than that of the traditional approach.

KW - Integer Programming

KW - Mine Optimization

KW - Open Pit

KW - Transition Point

KW - Underground

UR - http://www.scopus.com/inward/record.url?scp=84989863454&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84989863454&partnerID=8YFLogxK

U2 - 10.17159/2411-9717/2016/v116n8a13

DO - 10.17159/2411-9717/2016/v116n8a13

M3 - Article

VL - 116

SP - 801

EP - 808

JO - Journal of the Southern African Institute of Mining and Metallurgy

JF - Journal of the Southern African Institute of Mining and Metallurgy

SN - 2225-6253

IS - 8

ER -