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  • BLAST VIBRATION MONITORING IN OPENCAST MINES

    3 4 Drilling pattern 15 16 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

  • Iron Iron Ore Mining Explosives Pattern

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  • Blasting Pattern In Opencast Iron Mines

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  • UG Explosives and Blasting LinkedIn SlideShare

    Jul 14 2016 · UG Explosives and Blasting 1 K D PRASAD GM Min Vig 2 Definition of Explosives Explosives is a chemical compound or mixture when exploded by action of heat impact gives large volume of gases in a very short time at high temperature pressure Classification All commercial Explosives are broadly divided in two categories Low Explosives High Explosives

  • blast pattern – Mining and Blasting

    Oct 12 2012 · Understanding theory of detonation of explosives– The self sustained shock wave produced by a chemical reaction was described by Chapman and Jouquet as a space This space of negligible thickness is bounded by two infinite planes – on one side of the wave is the unreacted explosive and on the other the exploded gases as shown in the Fig 1 There are three distinct

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    blasting pattern in opencast iron mines blast 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 study get price blasting pattern in opencast iron mines crusherasia

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    Oct 12 2017· Blast design in opencast mining 1 BLAST DESIGN IN OPENCAST MINES Presented by Gopal Karmakar Id 511214015 and Jagat kumar Id 511214014 Mining Engineering IIEST Shibpur 2 Outline Introduction Drilling Explosive used in opencast mine Types of variables in blast design Blasting patterns used in Indian

  • PDF Selection of Most Proper Blasting Pattern in Mines

    Finally blasting pattern with burden of 3 5 m spacing of 4 5 m stemming of 3 8 m and hole length of 12 1 m has been presented as the most suitable pattern obtained from linear assignment model

  • New burn cut blast design in drives enhances drilling

    Aug 14 2015 · NEW BURN CUT BLAST DESIGN IN DRIVES ENHANCES DRILLING BLASTING EFFICIENCY WITH ECONOMY A CASE STUDY Fig â x20AC x201C 1 Original pattern With above pattern shown in Fig 1 for 4 5m

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    latest technology in opencast iron ore mine Iron Ore Processing Crushing Screening Grinding Beneficiation Drilling As an universal practice iron ore is As an universal practice iron ore is chat now More Info Compagnie miniére IOC ironoreca With a high quality iron ore reserve and a long mine life IOC is a global leader in the iron ore

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    safety rules opencast iron mines pujcovnapsu cz Jul 14 2016· UG Explosives and Blasting 1 K D PRASAD GM Min Vig 2 Definition of Explosives Explosives is a chemical compound or mixture when exploded by action of heat impact gives large volume of gases in a

  • ASK 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 15m

  • Mine wastes management Mining and Blasting

    Mine wastes management Mining wastes is generated during the process of extraction beneficiation and processing of minerals Extraction is the first phase that consists of the initial removal of ore from the earth This is normally done by the process of blasting which results in generation of large volume of waste soil debris and other

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    blasting pattern in opencast mining The pattern of shotholes 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 buy direct from

  • open cast mining explosive and blasting objective

    Mining objective SlideShare Apr 8 2012 Mining Objective Questions Useful for Competitive Examination Which of the following explosive have maximum strength a ANFO b TNT c RDX d NitroglycerineQ5 70 c d 80 cQ9 Fly rocks during opencast blasting is controlled by a Pop

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    drilling for iron ore newsecurityconcept be drilling blasting in iron ore mine bhongirmunicipalityin Iron Ore Drilling Iron Ore Blasting Drilling Iron Ore Drilling Many drillers adopt their chosen method of both hole making and Inquiry Drilling for iron ore Crusher Unit N cape iron ore drilling campaign at advanced stage mittal it is the most plentiful iron ore

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    Blasting Pattern In Opencast Iron Mines drilling blasting in opencast iron ore mine Diesel Power is a mining services business with 42 34 black ownership and provides opencast mining and rehabilitation services

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    iron ore mineral processing explosives pattern iron ore mining explosives pattern ducted in the iron ore mining industry in North America 1 is the pattern produced at the bottom of a drill pattern of the indentation where the tungsten carbide Feb 8 2014 foot holes in a drill pattern and filling the holes with explosiv Once the ore is Iron Ore Mineral Fact Sheets Australian Mines

  • Prediction of Rock Fragmentation in Open Pit Mines

    Prediction of Rock Fragmentation in Open Pit Mines using Neural Network Analysis Kazem Oraee1 Bahareh Asi2 Loading and transport costs constitute up to 50 of the total operational costs in open pit mines Fragmentation of the rock after blasting is an important determinant of the cost associated with these two components of mine development

  • Drilling Blasting In Opencast Iron Ore Mine

    Method Identify Drilling Mining Iron Ore Drilling and blasting practices in iron ore mine in indiahole body vibration exposure of drill operators in iron ore mines jul 10 2015 keywords drill operators iron ore mine multivariate analysis rock characteristics y the drill machine operators in the opencast iron ore mines

  • H BLASTING IN SURFACE EXCAVATION Mining and

    Figure 5 Chevron blast pattern Firing Patterns In normal blasting all holes do not blast at the same time Bench blasting is normally carried out as short delay blasting The firing pattern has to be designed so that each blasthole has free breakage The firing sequence of a chevron pattern can radically alter the

  • Drilling and blasting Wikipedia

    Drilling and blasting is the controlled use of explosives and other methods such as gas pressure blasting pyrotechnics to break rock for excavation It is practiced most often in mining quarrying and civil engineering such as dam tunnel or road construction The result of rock blasting is often known as a rock cut Drilling and blasting currently utilizes many different varieties of

  • opencast iron ore mine planning

    blasting pattern in opencast iron mines blasting pattern in opencast iron minesYouTube May 6 2016 Ekou Iron Ore Mine of Taiyuan Iron Steel Groups Corporation planning and designing blast Get Price Blast schedule planning and shiftwise production

  • Optimization 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 has to be achieved

  • Chapter 8 BLAST DESIGN National Park Service

    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

  • Drilling and blasting powerpoint 2003 LinkedIn SlideShare

    Apr 21 2012 · DRILLING PATTERNS Selection of drilling pattern varies with the type and size of the drill s used depth of hole kind of rock quantity rapidity of the explosive amount of steaming 13 BLASTING DEFINITION The process of breaking rocks into smaller pieces by use of explosives TYPES OF EXPLOSIVES Explosives based on chemical nature