coal mine blasting design

PDF Elements of drill
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State-of-the-art mine planning software systems provide the engineer with a three-dimensional, environment in which to design and visualize drill-and-blast plans This paper discusses producing ....

H BLASTING IN SURFACE EXCAVATION
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However, secondary blasting is the most expensive type of blasting Appropriate blast design is important in order to lessen the production of over size Secondary blasting can be done by pop shooting blockholing and plaster shooting mudcapping Shaped charges are sometime used in secondary blasting, but this is much more expensive Cast ....

Underground Mining
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Coal mines are susceptible to fume when sleeping large blasts in soft, weathered and wet sedimentary rock In response to industry demand, Orica has developed a complete Fume Risk Reduction protocol that takes a holistic view on the blasting operation to seek and control the many possible causes of fume without affecting productivity, and in many cases without ,...

Cast Blast Design
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Cast blasting is a type of blast design which utilizes the surplus explosive energy to move overburden material across the pit It is most frequently employed in coal mines to remove overburden from above the coal seam This is achieved by arranging pits in long and narrow configurations that facilitate the movement of the blasted rock into the ....

PDF ROCK BLASTING FOR MINING
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Mine Blast looks like a very , open-pit and coal strip mines using larg e drills will drill presplit , Thus, proper blast design with a computational approach is a vital factor that ....

A new mining method
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separate coal blasts are performed to excavate the coal from one throw blast block Overall, it is thus not unusual to have four separate blast events to mine the coal from a single throw blast block Drawbacks of conventional mining practice While throw blasting has undoubtedly increased coal mine productivity by moving much of the overburden...

Directional Controlled Blasting for Extraction of ,
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prediction was done using the established blast vibration predictor for the mine The flow chart of the methodology used for deciding the blast design parameters for this blast is shown in Figure 3 Since, the initiation of the blast holes was in bottom, the lesser throw of the material was planned for VIII Coal and VIII Shale Accordingly....

PDF Elements of drill
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State-of-the-art mine planning software systems provide the engineer with a three-dimensional, environment in which to design and visualize drill-and ,...

coal mine blasting design
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coal mine blasting design eduselfpl A novel powder factor based bench blast design method for has yet to create a blast design method specifically tailored for large surface coal mine bench blasting This research examines the typical scale of bench blasting at large surface coal mines, develops a new method of design tailored for these operations, and tests the new ,...

Open Pit Drill Blast Software
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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 and improve blasting performance over time...

A novel powder factor based bench blast design method for ,
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has yet to create a blast design method specifically tailored for large surface coal mine bench blasting This research examines the typical scale of bench blasting at large surface coal mines, develops a new method of design tailored for these operations, and tests the new method against two widely accepted traditional blast design methods Novel...

coal mine blasting design
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Underground mining sections include design of coal and hard rock pillars, mine layout design for tabular and massive ore bodies, assessment of caving characteristics or ore bodies, performance and application of backfill, and phenomenon of rock burst and its alleviation Application of theory to drilling and blasting practice at mines, pits...

A novel powder factor based bench blast design method for ,
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This research examines the typical scale of bench blasting at large surface coal mines, develops a new method of design tailored for these operations, and tests the new method against two widely accepted traditional blast design methods Novel contributions of the research include a new universal scale of energy distribution known...

Blast round design and casting in surface coal mining ,
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11-01-2022 0183 32 Casting design for bench blasting in surface coal mines is a new focus and a fairly recent success This study aims at the development of a model to predict the throw of overburden material based on geological conditions of a bench and charges in blast hol The model, derived on the basis of ....

GUIDELINES FOR THE INTEGRATED PLANNING AND DESIGN OF ,
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DESIGN OF UNDERGROUND COAL MINES Prof G A Fourie Mr D J van Niekerk Project No COL 814 Date November 2001 i i Foreword Mine planning and design involves the compilation and integration of all relevant geological, geotechnical, mining, engineering and economic data into a single document to define and...

Enabling better blasting
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Carefully planning blasting activiti In open-pit mining, the use of blast-masters, by designing the shape and size of the blasting polygons for the whole bench in the initial planning stages, is essential to increase eciency Blast design optimisation by adapting the drill and blast...

Blasting Techniques Used in Underground and Opencast Mines ,
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In underground coal mine the yield of coal on an undercut face is nearly 5-8 te per kg of explosive and 1-25 te per detonator but with solid blasting the figures are 18 to 27 te per kg of explosive and 08 to 135 te per detonator...

Surface mining planning and design of open pit mining
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09-01-2016 0183 32 Surface mining planning and design of open pit mining 1 This material is intended for use in lectures, presentations and as handouts to students, and is provided in Power point format so as to allow customization for the individual needs of course instructors Permission of the author and publisher is required for any other usage...

Optimized design of drilling and blasting operations in ,
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01-11-2018 0183 32 1 Introduction Mining activity is mostly represented by these four main operations drilling, blasting, loading and hauling For a proper mine planning and design, all of these operations need to be carefully planned in such a manner that can prevent extra loads such as operating costs, environmental footprints, etc Amongst these operations, drilling and blasting ,...

Final Report Role of blast design parameters on ground ,
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Role of blast design parameters on ground vibration and correlation of vibration level to blasting damage to surface structures S T Project MT/134/02 Project Leader Dr GR Adhikari Co , conditions being similar, non-coal mines are in a better position because frequencies are...

Blasting Techniques Used in Underground and Opencast Mines ,
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The pattern of shot-holes drilled for solid blasting in coal in galleries of bord and pillar working is 1 Wedge cut, or 2 Fan cut Drivage of a narrow gallery in coal without an undercut can be compared with drivage of a drift in stone Blasting out coal in the centre of the face in the wedge cut pattern gives free face for the remaining coal...

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