A mathematical model is also described which will make it possible to optimize the blast design for a specified damage zone in the rock mass.
To read more >>>>>
dimanche 30 juillet 2017
Case Examples of Blasting Damage and Its Influence on Slope Stability
This paper describes open pit studies where blasting damage introduced in the remaining rock has been investigated. Results from two open pit mines are described and discussed. Parallel performed laboratory experiments, where simulated blasting damage has been introduced into samples before shear strength testing took place, are also reviewed. These studies are tied together in order to throw some light upon how the blasting damage influences the slope stability.
A mathematical model is also described which will make it possible to optimize the blast design for a specified damage zone in the rock mass.
A mathematical model is also described which will make it possible to optimize the blast design for a specified damage zone in the rock mass.
SLOPE STABILITY IN OPEN PIT MINING (Review in PDF)
Design of open pit slope angles is becoming more and more important as the mining depths of
open pits continuously increase. Small changes in the overall pit slope angle have large
consequences on the overall economy of the mining operation. A case in particular is the Aitik
open pit mine in northern Sweden, which currently faces the design of the overall slope angles
for continued mining toward a depth of around 500 meters. This report constitutes the first
phase in a research project aimed at developing design methods for large scale pit slopes. In
this report, the stability and design of large scale pit slopes in open pit mining is reviewed, with
special reference to slopes in hard, jointed, rocks, similar to the rock types found at the Aitik
mine. The review covers the mechanics of pit slopes, existing design methods for large scale
slopes, remedial measures and mining strategy to cope with slope failures, and a compilation
of case studies from open pits worldwide. Finally, suggestions for future research in this area
are presented.
open pits continuously increase. Small changes in the overall pit slope angle have large
consequences on the overall economy of the mining operation. A case in particular is the Aitik
open pit mine in northern Sweden, which currently faces the design of the overall slope angles
for continued mining toward a depth of around 500 meters. This report constitutes the first
phase in a research project aimed at developing design methods for large scale pit slopes. In
this report, the stability and design of large scale pit slopes in open pit mining is reviewed, with
special reference to slopes in hard, jointed, rocks, similar to the rock types found at the Aitik
mine. The review covers the mechanics of pit slopes, existing design methods for large scale
slopes, remedial measures and mining strategy to cope with slope failures, and a compilation
of case studies from open pits worldwide. Finally, suggestions for future research in this area
are presented.
To read more >>>>>
samedi 31 décembre 2016
lundi 19 décembre 2016
dimanche 18 décembre 2016
Case study on rock excavation project in Turkey With Delpat Blasting Software
jeudi 15 décembre 2016
Varianza de Estimación y Varianza de Dispersión PDF
Varianza de Estimación y Varianza de Dispersión
Many thanks to: Jose M Valeriano
dimanche 11 décembre 2016
AN APPLICATION OF BRANCH AND CUT TO OPEN PIT MINE SCHEDULING
The economic viability of the modern day mine is highly dependent upon careful planning and management. Declining trends in average ore grades, increasing mining costs and environmental considerations will ensure that this situation will remain in the foreseeable future.
KEYWORDS: Branch and Cut, Mixed Integer Linear Programming, Mine Scheduling, Optimization.
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