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  • Optimization of Blasting Parameters Using Regression ...

    the optimum blasting result using the regression model generated using indices such as oversize generation and geometric volume of blast fit on blast design parameters. Description of the Study Areas . The study areas are located at Ibadan, Oyo state. Two quarries namely NSCE quarry and Ratcon quarry were used for this research.

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    This research examines optimization of blasting parameters for economic production of granite aggregates in Ratcon and NSCE quarries located atIbadan,OyoState. Samples were collected from the study areas for the determination of rock density and porosity. Schmidt hammer was used for in situ determination of rock hardness. Uniaxial compressive strength of in situ rock was estimated from the ...

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    Table of ContentsModelling Blast FragmentationOptimization of Unit OperationsOptimization of Fragmentation in an Underground MineComparison of Costs of Mechanical and Explosive Comminution Blasting plays a key role in all facets of operations. Obviously, drilling and blasting costs are determined by blast design, but the downstream costs that are closely related to blasting results are often ...

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    includ~d steps in planning a blast design and generalized blast patterns should be of help to the quarry operator. Design changes are recommended for those q~arries where problems are occurring. INTRODUCTION The Bureau of Mines has been conducting field studies of explosive blast­ ing in rock for a number of years.

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    optimization of blasting design at granite quarry blast design parameters, especially the burden, on Limited (SCCL) and LT (the Naokari limestone quarry) to establish the effect of the burden on ground vibrations and air stone Benches 3 and 4 are, however, of composite nature, with blocky to bedded sandstones and pit blast design, Read More

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    less wastage of explosive energy in blasting, less throw of materials, and reduction of blast vibration resulting in greater degrees of safety and stability to the nearby structures. Development of a Blast Optimization Model Selection of proper explosive in any blasting round is an important aspect of optimum blast design.

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    Optimization of Blasting Parameters Using Regression Models in Ratcon and NSCE Granite Quarries, Ibadan, Oyo State, Nigeria Jide Muili Akande, Abiodun Ismail Lawal Department of Mining Engineering, The Federal University of Technology, Akure, Nigeria Email: [email protected], [email protected] Received September 28, 2012; revised November 13 ...

  • Blast Optimization and Ore Fragmentation Modeling

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    includ~d steps in planning a blast design and generalized blast patterns should be of help to the quarry operator. Design changes are recommended for those q~arries where problems are occurring. INTRODUCTION The Bureau of Mines has been conducting field studies of explosive blast­ ing in rock for a number of years.

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    Jan 01, 2013  This research examines optimization of blasting parameters for economic production of granite aggregates in Ratcon and NSCE quarries located atIbadan,OyoState. Samples were collected from the study areas for the determination of rock density and porosity. Schmidt hammer was used for in situ determination of rock hardness. Uniaxial compressive strength of in situ rock was estimated from

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  • (PDF) Quarry Evaluation and Control of Bench Blasting

    Fig. 7: The trial plots for the optimization of drilling and blasting costs of a large limestone quarry 25 Sanga Tangchawal Quarry evaluation and control of bench blasting

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    Jan 01, 2013  This research examines optimization of blasting parameters for economic production of granite aggregates in Ratcon and NSCE quarries located atIbadan,OyoState. Samples were collected from the study areas for the determination of rock density and porosity. Schmidt hammer was used for in situ determination of rock hardness. Uniaxial compressive strength of in situ rock was estimated from

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    Optimization of blasting at these benches was possible by opening the pattern, ensuring its consistency and by using laser 2D profiling before drilling. This reduction of explosives consumption was done without increase in oversize. This blast design included: - Burden:3,75 m (12.5´) - Spacing 4,5 m (15´) - Stemming 2 m (crushed rock)

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  • Chapter 8 BLAST DESIGN

    BLAST DESIGN (Figure 8-2) Staggered pattern (Figure 8-3) Sing (Figure 8-1) Square or rectangular pattern. 114 DELAY PATTERNS Delay patterns, and varying the hole array to fit natural excavation topography, allow for more efficient use of the explosive energy in the blast. Benches may be designed and carried forth with more

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