Selecting the optimal drilling and blasting design for underground excavations in underground copper mine 'Jama' Bor

Dejan Bogdanović,Goran Stojanović

doi:10.5937/podrad1833053b

Abstract

Drilling and blasting operations are very important part of underground excavation design. They should be performed in accordance with some criteria, such as fragmentation, excavation stability and cost. In the paper are considered three drilling and blasting designs in order to reach the optimal one. To do so, all the criteria should be simultaneously considered in the analysis. For analysis is used Analytic Hierarchy Process – AHP method. Using AHP method, drilling and blasting patterns in underground copper mine “Jama” Bor are investigated and analysed. According to the obtained results, alternative 2 with contour drilling and blasting pattern was selected to be the best decision. Application of this alternative comparatively satisfies both fragmentation and excavation stability.

Highlights

Drilling and blasting operations in underground copper mine “Jama” Bor are performed for all types of underground excavations design
Since the selection of the optimal drilling and blasting design is very crucial to satisfying the aforesaid criteria, many parameters need to be considered such as hole diameter, delay time, specific charge, stemming, physic-mechanical properties and discontinuities (Monjezi et al, 2012)
Variation in each one of these parameters could affect the efficiency of the whole drilling and blasting process (Zhu et al 2007, 2008; Thornton et al 2002)

Summary

Introduction

Drilling and blasting operations in underground copper mine “Jama” Bor are performed for all types of underground excavations design. In those operations, producing a desired fragment size distribution (Michaux and Djordjevic, 2005) as well as the stability of underground excavations (Bogdanović, 1995) are considered to be the main objectives satisfying the overall mine economics. Since the selection of the optimal drilling and blasting design is very crucial to satisfying the aforesaid criteria, many parameters need to be considered such as hole diameter, delay time, specific charge, stemming, physic-mechanical properties and discontinuities (Monjezi et al, 2012). AHP method, a branch of multi-criteria decision making (MCDM) methods, is utilized to select the optimal operated drilling and blasting design.

Methods

Results

Conclusion