open pit blast pattern

Lec6 Open pit blast pattern.pdf - Rock Breakage 3069

9/10/2019 1 Rock Breakage 3069 Open Pit Blast Patterns and Explosive Distribution S. M. Farouq Hossaini 1 Terminology and geometry of open pit blasts Stemming Sub-drill Burden Hole Length Bench Height Cross Section through a single hole in a bench blast The burden for an explosive charge is the shortest distance to a free face or plane of relief.

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(PDF) A Practical Approach to Open Pit Blast Design: A ...

Field tests under prevailing conditions at the GNMC manganese open-pit at Nsuta, Ghana, established that a 2.0 m × 2.8 m drilling pattern with the design parameters listed in Table 3 gives better ...

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7 Rules of Thumb for Open Bit Blast Pattern ...

2018-4-8  Mineral/Ore Mined using the Hardrock Blast hole Drill, which are Heavy duty Rotary and or Down-The-Hole rigs for Blast hole drilling. It can help client to achieve the best economic and social benefit. Below is 7 rules of thumb for open bit blast pattern.

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Open Pit Mining - The Super Pit

2021-10-28  Charging the Blast Hole with AmPho. Wiring the Blast Holes. Loading a Blast Hole with a Charge. Wiring up the Blast Holes. A Blast in the Fimiston Open Pit. Watering for Dust Control. Loading a Haul Truck. A Loaded Haul Truck. Trucks Driving Past a Blast Pattern on Golden Pike.

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Blasting near open pit walls - Conference Papers

Blasting near open pit walls CK McKenzie 84 APSSIM 2016, Brisbane, Australia Open pit blasting must be considered as a mining process with well-defined customers, those being the excavator/truck fleet (pit productivity), the processing plant (plant productivity), and the geotechnical department (pit safety).

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BlastHole Drilling Introduction - Hardrockdrills

2019-6-4  Open Pit Blast Pattern. Rules of thumb. Burden. 25 to 35 hole diameters; Spacing. Hole size greater than 140 mm (5½”) 1.2 to 1.5 burden; Hole size smaller than 140 mm (5½”) 1.5 to 1.8 burden; Stemming. 0.7 to 1.3 burden. Powder factor.

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Open Pit Drill Blast Software - DataBlast - Datamine

Open Pit Drill Blast Solution. DataBlast is a multi-user system covering the entire open pit drill and blast process from design to in-field operations. Electronically transfer data, respond to changes in real-time, and generate reconciliation reports. Identify trends

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Blasting Principles for Open Pit Mining, Set of 2 Volumes ...

1999-1-15  Divided into two volumes, this accessible work describes the principles involved in hard rock blasting as applied to open pit mines. A large number of examples illustrate the application of the principles. The first volume introduces basic

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Chapter 8 BLAST DESIGN - NPS

2014-6-11  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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DRILLING AND BLASTING DESIGN BASED ON

2019-7-19  blast hole pattern value, m; q i is new specific energy cost, kgm/m3. The analysis of bulk blasts using (3) showed that even drastic change of energy costs (up to two times) and hole pattern (up to 1.5 times) kept good convergence of measured and expected blast results. The important point of the analysis is the flexibility

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(PDF) ROCK BLASTING FOR MINING - ResearchGate

Bench blasting is a common blast technique m ost often used for open pit mines. By definition, bench blasting is blasting in a vertical or sub-vertical hole or a row of holes towar ds a free ...

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Mine Designer - MICROMINE

Specialised tools for open pit blast pattern design include creating blast patterns, blast rows or single blastholes; clipping blastholes to a wireframe; defining the firing sequence and delays; and restricting blastholes to specified boundaries.

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Lec6 Open pit blast pattern.pdf - Rock Breakage 3069

9/10/2019 1 Rock Breakage 3069 Open Pit Blast Patterns and Explosive Distribution S. M. Farouq Hossaini 1 Terminology and geometry of open pit blasts Stemming Sub-drill Burden Hole Length Bench Height Cross Section through a single hole in a bench blast The burden for an explosive charge is the shortest distance to a free face or plane of relief.

More

Open Pit Drill Blast Software - DataBlast - Datamine

Open Pit Drill Blast Solution. DataBlast is a multi-user system covering the entire open pit drill and blast process from design to in-field operations. Electronically transfer data, respond to changes in real-time, and generate reconciliation reports. Identify trends

More

Prediction of Backbreak in Open-Pit Blasting Operations ...

2012-6-12  Monjezi M, Dehghani H (2008) Evaluation of effect of blasting pattern parameters on back break using neural networks. Int J Rock Mech Min Sci 45:1446–1453. Article Google Scholar Monjezi M, Rezaei M, Yazdian A (2010a) Prediction of backbreak in open-pit blasting using fuzzy set theory. Expert Syst Appl 37(3):2637–2643

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Optimisation of the drill and blast work in the open pit ...

2018-2-13  Optimisation of the drill and blast work in the open pit Rabenwald mine of Rio Tinto Minerals Author: Florian Bauer Leoben, February 2007

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BLAST MASTER PLAN: DESIGN AND REFINEMENT

2016-2-17  A blast master plan is the tool that harmonizes all the aspects that need to be considered in a pit regarding blasting, and involves ... blast performance - the pattern orientation should be based on the most beneficial direction to ... the largest open pit operation in Bulgaria. Initially, basic blast design guidelines involving the ...

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Chapter 8 BLAST DESIGN - NPS

2014-6-11  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

More

Designing Blast Patterns Using Empirical Formulas

2014-4-2  Designing blast patterns using empirical formulas: a com­ ... clay and/or mud accumulate in an open joint, it will be considered as a filled joint. The filled joint may have a few discontinuous open channels. Folded bedding is marked by a bend in the strata. In this report, bed­

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DRILLING AND BLASTING DESIGN BASED ON

2019-7-19  blast hole pattern value, m; q i is new specific energy cost, kgm/m3. The analysis of bulk blasts using (3) showed that even drastic change of energy costs (up to two times) and hole pattern (up to 1.5 times) kept good convergence of measured and expected blast results. The important point of the analysis is the flexibility

More

Страницы из Blasthole_Drilling_in_Open_Pit_Mining-5.pdf

BLASTHOLE DRILLING IN OPEN PIT MINING 21 TALKING TECHNICALLY The key component of a rotary blast- hole drill is the tower, which is some-times referred to as the derrick or mast. Atlas Copco towers are four main mem- ber, open front structures in which the rotary head slides up and down via a

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Blast Hole Drilling: The Basic Process RPM Drilling

2017-8-24  Blast hole Drilling is a technique used in mining whereby a hole is drilled into the surface of the rock, packed with explosive material, and detonated. The aim of this technique is to induce cracks in the inner geology of the surrounding rock, in order to

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Improved Blast Pattern Design on Mt Whaleback Based on ...

This paper details a proposal for integrating the use of the Pilbara Iron Ore Classification (PIOC) and stratigraphic data for fine tuning blast. pattern design on Mt Whaleback. The main thrust of the proposal is based on the assertion from Haqan and Harries (1979) that rock properties influence blasting results more than explosive properties.

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An Open Pit Bench Blasting Application - Mining Consultant

2016-12-9  This application was made in an open pit chromite mine. Our parameters are as follows; Pattern Design: Once you design your pattern you can always use that in your pit. Drilling: Drill the holes according to the pattern design. Fill the holes: Fill the holes with explosive material and then stemming with raw material (you can fill with material ...

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Improved Blast Pattern Design on Mt Whaleback Based on ...

This paper details a proposal for integrating the use of the Pilbara Iron Ore Classification (PIOC) and stratigraphic data for fine tuning blast. pattern design on Mt Whaleback. The main thrust of the proposal is based on the assertion from Haqan and Harries (1979) that rock properties influence blasting results more than explosive properties.

More

Open Pit Drill Blast Software - DataBlast - Datamine

Open Pit Drill Blast Solution. DataBlast is a multi-user system covering the entire open pit drill and blast process from design to in-field operations. Electronically transfer data, respond to changes in real-time, and generate reconciliation reports. Identify trends

More

Prediction of Backbreak in Open-Pit Blasting Operations ...

2012-6-12  Monjezi M, Dehghani H (2008) Evaluation of effect of blasting pattern parameters on back break using neural networks. Int J Rock Mech Min Sci 45:1446–1453. Article Google Scholar Monjezi M, Rezaei M, Yazdian A (2010a) Prediction of backbreak in open-pit blasting using fuzzy set theory. Expert Syst Appl 37(3):2637–2643

More

Optimisation of the drill and blast work in the open pit ...

2018-2-13  Optimisation of the drill and blast work in the open pit Rabenwald mine of Rio Tinto Minerals Author: Florian Bauer Leoben, February 2007

More

OPEN PIT MINING - MTi Group

oPEN PIT MINING. MISFIRES. FUME. POOR FRAGMENTATION / OVERSIZE. HIGH BLASTING COST / OPTIMISING POWDER FACTOR. BLAST PATTERN SAFETY. FALLBACK AND SHORT HOLES RESULTING IN TOE. ACCURATE HOLE MEASUREMENT. VIBRATION / AIRBLAST.

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Страницы из Blasthole_Drilling_in_Open_Pit_Mining-5.pdf

BLASTHOLE DRILLING IN OPEN PIT MINING 21 TALKING TECHNICALLY The key component of a rotary blast- hole drill is the tower, which is some-times referred to as the derrick or mast. Atlas Copco towers are four main mem- ber, open front structures in which the rotary head slides up and down via a

More

Blast Design Software Blasting Pattern Software Blast ...

Blast Design. Generates blast plan and according to the delay pattern structure, simulation. BLAst DESigner Software (BLADES) calculates blast plan parameters, explosives charge distribution, initiation timing and sequence, results in terms of rock breakage and fragment size distribution.

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Blast Hole Drilling: The Basic Process RPM Drilling

2017-8-24  Blast hole Drilling is a technique used in mining whereby a hole is drilled into the surface of the rock, packed with explosive material, and detonated. The aim of this technique is to induce cracks in the inner geology of the surrounding rock, in order to facilitate further drilling

More

Blast Design Software Blasting Pattern Software for Mining

BLADES for blast design by MineExcellence, provides accurate measurement which is imperative for a successful blast design. BLADES provide quarry operators with an uncomplicated, first-approximation method for designing blast patterns, considering geologic structure, and to show the valid use of the technique by comparing drill and blast pattern dimensions used in the quarry.

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OPEN PIT DRILL AND BLAST ENGINEER Job in Kalgoorlie ...

Currently Norton Gold Fields is progressing its expansion of two underground mine sites namely Tuart and Enterprise and various open pit projects such as Federal, Jakarta, Golden Funnel, Rose Dam South and Rose Dam North this year. Duties . Generate effective drill pattern, tie-in and charge designs.

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