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Optimization of Blasting Parameters in opencast Mines

2012-7-5  Drilling and blasting are the major unit operations in opencast mining. Inspite of the best efforts to introduce mechanization in the opencast mines, blasting continue to dominate the production. Therefore to cut down the cost of production optimal fragmentation from properly designed blasting pattern has to be achieved.

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Blasting Techniques Used in Underground and Opencast

2021-9-15  Blasting Techniques Adopted in Opencast Mines: Efficient blasting should give such rock fragmentation as to eliminate the need for secondary blasting. The fragmented rock should be easily handled by the bucket of the shovel. For mineral which has to go to crushers, the size should not be more than the input size for primary crusher.

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Optimization of Blasting Operation in Opencast Mine

2020-5-22  In opencast mining both vertical and inclined holes practiced with the bench face. The holes drilled in a row may be single or multiple. So those two patterns are used, mainly in the opencast mines. They are: a) Single row blasting pattern b) Multi row blasting pattern Single row blasting pattern:

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BLAST VIBRATION MONITORING IN OPENCAST MINES

2017-2-2  3.5 Blasting Pattern Followed in Opencast Mines 16 3.5.1 Single row firing pattern 16 3.5.2 Multi Row firing pattern 17 3.5.3 Beside cut pattern other pattern of blasting in multiple row of firing are as given below 18-19 CHAPTER 02: GROUND VIBRATION 4.1 Blast Vibration 21 4.2 Ground Vibration 21 ...

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[PDF] Optimization of blasting parameters in opencast ...

Drilling and blasting are the major unit operations in opencast mining. Inspite of the best efforts to introduce mechanization in the opencast mines, blasting continue to dominate the production. Therefore to cut down the cost of production optimal fragmentation from properly designed blasting pattern has to be achieved. Proper adoption of drilling and blasting can contribute significantly ...

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(PDF) ROCK BLASTING FOR MINING - ResearchGate

In opencast mines, ... The design of blasting patterns is specif ic to not only the explosives that are being used, but also to . the rock or ore type that is being fragm ented.

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Blast vibration monitoring in opencast mines - ethesis

In this report the blast vibration monitoring techniques is studied. Ground vibration induced by blasting practices in mines has become a serious environmental issue in today’s scenario. Various factors influence the blast vibration being produced from the blasting practices such as the pattern of blasting, drilling pattern, quality and quantity of explosives being used, delay pattern etc.

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Rock fragmentation control in opencast blasting ...

2016-4-1  1. Introduction. Rock fragmentation distribution influences a range of mining and milling processes including load and haul rates, crushing and grinding performance and ore recovery in beneficiation processes (Michaud et al., 1997).In opencast mining, where blasting is employed for excavation, the overall cost effectiveness of the production operations is compatible with optimization

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Chapter 8 BLAST DESIGN - NPS

2014-6-11  than one face so that simple blasting patterns can be used to remove the rock. In the illustration that follows (Figure 8-4) shows a typical bench cut with two free faces and fired with one delay per row. Figure 8-5 indicates that the direction of throw of the blasted rock can be controlled by varying the delay pattern.

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BLAST VIBRATION MONITORING IN OPENCAST MINES

2017-2-2  3.5 Blasting Pattern Followed in Opencast Mines 16 3.5.1 Single row firing pattern 16 3.5.2 Multi Row firing pattern 17 3.5.3 Beside cut pattern other pattern of blasting in multiple row of firing are as given below 18-19 CHAPTER 02: GROUND VIBRATION 4.1 Blast Vibration 21 4.2 Ground Vibration 21 ...

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(PDF) ROCK BLASTING FOR MINING - ResearchGate

In opencast mines, ... The design of blasting patterns is specif ic to not only the explosives that are being used, but also to . the rock or ore type that is being fragm ented.

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Blasting Pattern In Opencast Mining - krasnaprace

Blasting Pattern In Opencast Mining. enhance the safe, effective, and efficient use of blasting technology by the mining industry. Recent research results of the surface mine blast ing program were presented at a seminar on April 15, 1987, in Chicago, IL. Many of the topics discussed at the seminar are presented in this.

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Blasting Pattern In Opencast Mining

blasting pattern in opencast mining - rock crusher india. better fragmentation in opencast iron ore. blasting pattern in opencast iron mines - Quarrying Crusher Plant. Read more. blasting in open cast iron mines.

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Blast vibration monitoring in opencast mines - ethesis

In this report the blast vibration monitoring techniques is studied. Ground vibration induced by blasting practices in mines has become a serious environmental issue in today’s scenario. Various factors influence the blast vibration being produced from the blasting practices such as the pattern of blasting, drilling pattern, quality and quantity of explosives being used, delay pattern etc.

Get Price

Rock fragmentation control in opencast blasting ...

2016-4-1  1. Introduction. Rock fragmentation distribution influences a range of mining and milling processes including load and haul rates, crushing and grinding performance and ore recovery in beneficiation processes (Michaud et al., 1997).In opencast mining, where blasting is employed for excavation, the overall cost effectiveness of the production operations is compatible with optimization of ...

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IRJET- Optimization of Blasting Operation in Opencast Mine

The present operation is a step in the direction of developing a suitable Key Words: Optimization, Drilling, Blasting, Opencast blast model, with simple methodologies which can be mine, Blast model, Explosives, Machinery. adapted by the mining industry to achieve better blasting results. 1.

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Designing Blast Patterns Using Empirical Formulas

2014-4-2  Twin Cities Mining Research Center, Minneapolis, Minn . . US Department of Interior Office of Surface Mining Reclamation and Enforcement Kenneth K. Eltschlager Mining/Explosives Engineer ... Blasting pattern dimensions for Ohio, Adams County, Quarry No. 1... 11 3.

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Drilling patterns - QueensMineDesignWiki

2019-6-28  Drilling Patterns. Various drilling patterns have been developed for approaching the blasting of drifts which are described in the following sub-sections. These patterns refer to the pattern of the initial cuts which are then blasted into from surrounding holes. This is

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Blast Design Software Blasting Pattern Software Blast ...

Based on desired blasting inputs such as face co-ordinates, hole diameter, pattern layout, face rock characteristics and location, face profile, hole diameter, pattern layout, desired fragmentation size, explosives and initiating devices, environmental constraints, BLAST DESIGNER SOFTWARE (BLADES) calculates blast plan parameters, explosives charge distribution, initiation timing and sequence ...

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(PDF) Blast Design in Opencast Mines - ResearchGate

The available techniques for drill and blast design in underground mining were analyzed. The advantages and disadvantages of the widely used blast-hole patterns, types of cuts, and explosives are ...

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Rock fragmentation control in opencast blasting ...

2016-4-1  1. Introduction. Rock fragmentation distribution influences a range of mining and milling processes including load and haul rates, crushing and grinding performance and ore recovery in beneficiation processes (Michaud et al., 1997).In opencast mining, where blasting is employed for excavation, the overall cost effectiveness of the production operations is compatible with optimization of ...

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IRJET- Optimization of Blasting Operation in Opencast Mine

The present operation is a step in the direction of developing a suitable Key Words: Optimization, Drilling, Blasting, Opencast blast model, with simple methodologies which can be mine, Blast model, Explosives, Machinery. adapted by the mining industry to achieve better blasting results. 1.

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Blast optimization at Kriel Colliery J r n a

2015-4-16  sections. The opencast was commissioned in 1978 and consists of two dragline pits and a mini-pit. Project background General information on blasting operations This study was conducted in both Pit 5 and Pit 6. The overburden in Pit 5 is drilled on a 10 m x10 m blast hole pattern and a bench height in excess of 30 metres. The blast holes

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1. Introduction - dspace.nitrkl.ac

2018-11-28  As we know blasting and drilling are the most important unit operations in opencast mining,blasting still holds to rule the productionof a mine . Consequently to cut down the cost of production and get ... blasting pattern, sub- drill, collar and bottom elevation g. After creation of pattern upload this into the blast database 3.4. Charging ...

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Optimized design of drilling and blasting operations in ...

2018-11-1  Drilling and blasting are the two most significant operations in open pit mines that play a crucial role in downstream stages. While previous research has focused on optimizing these operations as two separate parts or merely in a specific parameter, this paper proposes a system dynamic model (SDM) for drilling and blasting operations as an interactive system.

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Blast Design Software Blasting Pattern Software Blast ...

Based on desired blasting inputs such as face co-ordinates, hole diameter, pattern layout, face rock characteristics and location, face profile, hole diameter, pattern layout, desired fragmentation size, explosives and initiating devices, environmental constraints, BLAST DESIGNER SOFTWARE (BLADES) calculates blast plan parameters, explosives charge distribution, initiation timing and sequence ...

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Designing Blast Patterns Using Empirical Formulas

2014-4-2  Twin Cities Mining Research Center, Minneapolis, Minn . . US Department of Interior Office of Surface Mining Reclamation and Enforcement Kenneth K. Eltschlager Mining/Explosives Engineer ... Blasting pattern dimensions for Ohio, Adams County, Quarry No. 1... 11 3.

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Surface Mine Blasting - OSMRE

2014-4-2  SURFACE MINE BLASTING Proceedings: Bureau of Mines Technology Transfer Seminar, Chicago, IL, April 15, 1987 Compiled by Staff, Bureau of Mines ABSTRACT The Bureau of Mines has sponsored a comprehensive research program to enhance the safe, effective, and efficient use

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Drilling Pattern, Blasting Design Types used In U/G mines ...

2020-6-16  drilling pattern in underground coal mines and all 7 types of blasting design patterns like wedge cut drilling pattern, pyramid cut drilling pattern. pyramid cut में drilling hole, Face के मध्य भाग से 0.7 - 1 मीटर की दूरी पर round shape में ...

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