open cast coal mining blasting pattern

[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 ,Optmization of blasting parameters in open cast mines, Aug 20, 2016· Optmization of blasting parameters in open cast mines 1 OPTMIZATION OF BLASTING PARAMETERS IN OPEN CAST MINES A Project Report Submitted in partial fulfilment of requirements for award of dual degree of Bachelor of Technology and Master of Technology in Mining Engineering By Anurag Kumar Jha Exam Roll no-511214025 SESSION 2015-2016 DEPARTMENT OF MINING ,Office of Surface Mining Reclamation and Enforcement (OSMRE), Office of Surface Mining Reclamation and Enforcement (OSMRE)A system, Dec 12, 2018· The production cycle of open-cast coal mines generally includes drilling, blasting, loading, hauling and coal preparation activiti Individual optimization of these activities does not mean that the whole system is optimized This paper proposes a cost model considering all activities in mining cycle and system-wide approach to minimize the total mining cost of bench productionDrilling patterns, Blast patterns with square patterns are simple and provide good results where spacing equals the burden Although, in hard rock mining triangular formations where the burden is 115 times greater than the spacing are more effective as it induces further twisting and shearing of the rock and avoids splitting between blast holes on planes before ,.

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Blasting Techniques Used in Underground and Opencast Mines ,, Sep 16, 2018· 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 ,Economic Evaluation of Drilling and Blasting on the ,, an open cast coal mine, where 1 seam and 2 seam separated by a parting which is ± 600mm thick are mined 1 seam was mined using the underground methods from 1926-1966 The inaccuracy of the old underground plans has a major effect on the drilling and blasting performance due to the fact that the pillars were never off-setExcavation, Drilling & Blasting Solutions, Excavation, Drilling and Blasting Solutions At Divestic Mining Services we provide three key engineered and innovative steps of mining solutions for all opencast mining operations Our personnel is efficiently trained and competent to ensure maximum production, safety and efficiencyBlasting side effects, (1996) Blasting side effects - Investigations in an opencast coal mine in India International Journal of Surface Mining, Reclamation and Environment: Vol 10, No 4, pp 155-159JAn 203 1 of 21 Surface Blasting Safety Procedures, oitted to Ecellence in Mining Safety Last Modified: Page: JAN 2013 2 of 21 coresafetyorg MODULE 12 (C ONT)Surface Blasting Safety Procedures Blasting Materials Surface delays, detonators or blasting caps, boosters, safety fuse, down-line and other explosives used for blasting.

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Coal Mine Blasting, Blasting routine in Open Cast Min don't miss @ 120mins and @ 5 mins This kind of blasts happen almost every dayNine Years of Blasting Experience ,, Years Of Blasting Experience with Electronic Delay Detonators May 2003 4 4 The First ED Production Shot at Kleinkopje Coal Mine The very first blast was taken at the Kleinkopje opencast coal mine on 10 June 1993 There were 80 holes of 311mm diameter and 25m deep, on an 11m x 11m pattern, and loaded with ANFOCoal Mining, Coal mining today is highly mechanised and the production miner is responsible for the efficient operation of sophisticated mining machinery Minimum Requirements Students must be at least 17½ years of age, have a minimum qualification of grade 10 (ABET 3), and must be medically fitCoal Mine Blasting, Jan 30, 2009· Blasting routine in Open Cast Min don't miss @ 120mins and @ 5 mins This kind of blasts happen almost every dayCase Study Cast Blasting, Wilkie Creek mine is located in the Surat Basin of south-east Queensland Mining commenced in 1994, with Peabody acquiring the operation in 2005 Current production rate is 23 million tonnes of thermal coal The open-cut operation utilises excavators, loaders, dozers and trucks to mine the coal Product coal is.

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OPEN CAST MINE PLANNING, OPENCAST MINE PLANNING, DEPLOYMENT OF HEMM FOR OPTIMUM UTILISATION, TOTAL TECHNICAL PARAMETERS OF HEMM INCLUDING LIMITATIONS, & HAUL ROAD & ITS MAINTENANCE PD RATHI Sr Mining Engineer OPEN CAST MINE PLANNING Factors that influence planning: 1) Demand of coal a Countrywide demand b Regional demand 2) Distribution of coal ,A Dynamics Model of Surface Coal Blasting Design Pattern, The application of dynamic modelling for designing surface coal blasting patterns is presented By combining the terms of open cast blasting design pattern, production planning, noise, vibration ,Blast Training Course Guide, explosives/blasting industry of over 100 years of practical blasting experience in most blasting environments If required, the course can be run for a small group from one organisation at a mine site or at a training venue convenient to the workplace Training MethodsASK MINING: Blasting Practices at Open Cast Mines, Mar 02, 2012· Following are some important facts related to blasting practices in open cast mines:-1 Drilling: There are two major types of drilling techniques being used Down the Hole (DTH): It is used when the blast hole diameter varies from 100mm to 380mm and the depth of blast hole is 12-15mBlast, During the research on bench deep-hole blast casting, the blast-casting parameters are directly related to the blast-casting results, so it could reveal the mechanism for improving the effect thereof Based on the principle of the plane charge method, both the stress wave and detonation gas were considered to affect rock fragmentation and casting, a model of overburden fragmentation and ,.

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Development and Application of Blast Casting Technique in ,, Blast casting is a high-efficiency technique applied in surface mines for overburden removal and results in stripping cost savings According to ballistic theory and center-of-mass frame basic movement principles, key factors influencing blast casting effect were analyzed, which include bench height and mining panel width, inclined angle of blast holes, explosive unit consumption (EUC), delay ,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 ,Brauteseth Blasting, Mining We have long term drilling, blasting and ROG contracts with open cast and coal mines in the KZN and Gauteng regions We have the capabilities and resources to expand our drilling and blasting services within the open cast mining industryOpencast coalminingatKrielColliery, In the opencast operation, full seam extraction was planned, which would mean adecrease inthe calorific value ofthe coal delivered to the power station (see Fig 2)Mter discussions with Escom, it was agreed that three generating sets ofthe station would burn coalfrom the underground mine, while the last three setswould befiredwith coalfrom the ,Citizen's Guide to Coal Mine Blasting in Indiana, The blasting agent commonly used in coal mines is called ANFO, which is a mixture of Ammonium Nitrate (a common fertilizer), and fuel oil (Dynamite is not typically used in surface coal mining to fracture the rock) After blasting, a dragline, shovels, trucks, or other heavy equipment remove the rocky overburden to expose the coal seam.

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Drilling And Blasting In Open Cast Iron Ore Mines, 201232blasting pattern in opencast iron minesblasting pattern in opencast iron mineslast vibration monitoring in opencast mines email protected beside cut pattern other pattern of blasting in multiple row of firing are as given below blast vibration study at open cast iron mine a case studyet price blasting pattern in opencast ironBlaster's Training Modules, Surface Mining, US Department of the Interior, located in Denver, Colorado The module is an example of the technical assistance the Federal government furnishes States to assist them in meeting the requirements of the Surface Mining Control and Reclamation Act of 1977, upon which their State surface coal-mine regulating programs are basedRock fragmentation control in opencast blasting ,, Apr 01, 2016· Presently, seams R-V and R-VI are being extracted by opencast method of mining The mine is producing about 45 Mt of coal and removal of overburden is about 12 Mm 3 The stripping ratio of the mine is 1:472, ie 472 m 3 of overburden is to be removed for mining of 1 t of coal The total coal reserve of the mine is 18826 Mtopen pit mine blasting, Nov 29, 2010· blasting in northern bcOptimization of Blasting Parameters in opencast Mines, 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 ,.

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