• Working a blast Free opencast coal mine: Is it .

    Download Citation | Working a blast Free opencast coal mine: Is it a possibility? | The interest to develop a benign mining under least environmental impact in the coal mining sector with due

    Get Price
  • (PDF) ROCK BLASTING FOR MINING ResearchGate

    Mine Blast looks like a very openpit and coal strip mines using larg e drills will drill presplit holes that rang e from 9 to 12¼ . inches in diameter. Quarry and construction presplits are

    Get Price
  • Design of openpit mining SlideShare

    13/03/· 3) Should be near the External dump / Coal yard / Mine service facilities etc. 4) Main haul road upto the pit limit should be planned in the beginning only. 5) Since haul costs constitute about more than 40% and tyre costs about 10% of the total mining costs,priority for design,construction and maintenance should be given. 6) Gradient,width,drainage,curves,super elevation,base,sub base,type

    Get Price
  • PPT – ADVANCED SURFACE COAL MINING .

    Surface miner ; Some of the opencast coal mines of MCL, SECL CCL are using surface miners for extraction of coal. Presently surface miner is used as cutting machine only and pay loader has been added for loading the coal into the tipping trucks. Contd. 9. Advantages of Surface Miner technology Elimination of drilling blasting

    Get Price
  • Opencast – The free and open source solution for .

    29/04/· OpenSource Video Management Opencast is a flexible, reliable, and scalable opensource videocapture, management, and distribution system for academic institutions, built by a community of developers from leading universities and organizations worldwide. demo Get Started Documentation

    Get Price
  • blast pattern – Mining and Blasting

    12/10/· 2. Contemplation of Blast Design: Blast designing is not a science, but knowledge, experience, studying and analyzing past practices in relation to rock strata & geology etc., makes blaster to achieve perfection. Thus, for a blaster, valuable tool is the file of blast reports that he builds as he gains experience. Not only do these provide evidence of the quality of his work, but they also

    Get Price
  • 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.

    Get Price
  • (PDF) Planning and deployment of Continuous .

    PDF | On Jan 26,, Mutyal Rao and others published Planning and deployment of Continuous Surface Miner at moderate depth opencast mines A blast free excavation technique | .

    Get Price
  • Chapter 8 BLAST DESIGN NPS

    BLAST DESIGN (Figure 82) Staggered pattern (Figure 83) Sing (Figure 81) 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 than one face so that simple blasting patterns can be used to remove

    Get Price
  • Blast Design Software | Blasting Pattern .

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

    Get Price
  • Blast design in opencast mining SlideShare

    12/10/· 1. BLAST DESIGN IN OPENCAST MINES Presented by Gopal Karmakar (Id ) and Jagat kumar (Id ) Mining Engineering IIEST Shibpur 2. Outline • Introduction • Drilling • Explosive used in opencast mine • Types of variables in blast design • Blasting patterns used in Indian opencast mines • Concept of optimum blasting

    Get Price
  • Blast Free Mining in Indian Surface Coal Mines – .

    Unpublished M. Tech Dissertation submitted to Indian School of Mines, Dhanbad, pp. 1–40 () Google Scholar. 9. Dikshit, M.P., Singh, O.P.: Surface Miner operation – a cost effective, ecofriendly coal mining for mass production in opencast coal mines in India.

    Get Price
  • (PDF) Prediction of blast induced ground .

    Prediction of blast induced ground vibrations and frequency in opencast mine: A neural network approach Manoj Khandelwal IntroductionThe increasing development of opencast mines due to the enhanced demand for coal, and other minerals has lead to usage of huge amounts of explosives for blasting particularly in India.

    Get Price
  • (PDF) Blast Design in Opencast Mines .

    The available techniques for drill and blast design in underground mining were analyzed. The advantages and disadvantages of the widely used blasthole patterns, types of .

    Get Price
  • blast pattern – Mining and Blasting

    12/10/· Blast Design: This is meant to be a toolbox for blast design in conventional rock quarrying and open pit mines. This writeup is not meant to give straight answers to the blast design parameters, as every single quarry is unique. However, the general relations between the main blasting parameters; geology, blastability and explosives, will be applicable, and the estimation model is a very good

    Get Price
  • Optimization of Blasting Parameters in opencast Mines

    IN OPENCAST MINES A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF 4.2 Optimization of Mine Production System through Operation Research Techniques CHAPTER 5: DEVELOPMENT OF BLAST OPTIMIZATION MODEL 5.1 Parameters affecting explosive performance 5.2 Selection of Parameters for Blast Optimization 5.3 .

    Get Price
  • Explosives and blasting in underground coal .

    16/03/· EXPLOSIVES AND BLASTING IN UNDERGROUND COAL MINING M.S.S.S.SASHANK 113MN. 2. INTRODUCTION All seams in underground coal mines are considered gassy, the degree of gassiness may vary from I to III. Methane gas that is released from during excavation when mixed in the proportions between 514% forms an explosive mixture.

    Get Price
  • DESIGN OF STABLE SLOPE FOR OPENCAST MINES

    I am thankful to mine officials of Jindal Opencast Mine at Raigarh who have extended all sorts of help for accomplishing this undertaking. I am also thankful to all staff members of Department of Mining Engineering, NIT Rourkela An assemblage of this nature could never have been attempted without reference to and inspiration from the works of others whose details are mentioned in reference

    Get Price
  • Chapter 8 BLAST DESIGN NPS

    BLAST DESIGN (Figure 82) Staggered pattern (Figure 83) Sing shows a typical bench cut with two free faces and fired with one delay per row. Figure 85 indicates that the direction of throw of the blasted rock can be controlled by varying the delay The economic analysis of the use of explosives is an important part of blasting

    Get Price
  • Applicability of Controlled Blasting in Large .

    The Jayant Opencast Project is a coal mine producing 15.5 mtpa of coal and 51.5 Mm 3 of overburden is being removed through drilling and blasting. The mine is currently operating with dragline as

    Get Price
  • Surface mineral workings: control of blasting .

    01/02/· The need to blast overburden at opencast coal sites commonly increases with the depth of the mineral working, since the deeper layers of overburden contain fewer weaknesses in the form of joints, particularly in the case of sandstone layers. If there is uncertainty over whether blasting is required at an opencast coal site then a precautionary approach should be taken. It is better for mineral

    Get Price
  • List of Technical Papers – Mining and Blasting

    Blast design for Drifting and Tunneling with Wedge and Burn Cut; Over Burden Side Casting Advances in Drilling and Blasting Controlled Blasting Explosives, Ground Vibration and Air Blast Explosives and Blasting Blasting of Hot Holes in Opencast Coal Mines Blast Design in Opencast Mines and Concept of Optimum Blasting

    Get Price
  • (PDF) ROCK BLASTING FOR MINING ResearchGate

    Mine Blast looks like a very openpit and coal strip mines using larg e drills will drill presplit holes that rang e from 9 to 12¼ . inches in diameter. Quarry and construction presplits are

    Get Price
  • (PDF) Advance detection of Slope Failures in .

    The Opencast Coal Mine has the annual production target of one million tons. The block is extensively soil covered and the exposures are scanty. The geology of the block has been studied based on the subsurface data obtained from drilling. The exploration in opencast block has established the occurrence of two coal seams viz., Top and Bottom Seam. The thickness of the top seam varies from 1

    Get Price
  • Chapter 8 BLAST DESIGN NPS

    BLAST DESIGN (Figure 82) Staggered pattern (Figure 83) Sing (Figure 81) 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 than one face so that simple blasting patterns can be used to remove

    Get Price
  • OpenPit Mine Planning and Design University of Pretoria

    of open pit mine design and the application thereof, whilst having the chance to interact with experts in the field. The course is comprehensive and is based on both the undergraduate and postgraduate Surface Mine Design Engineering courses presented in the Mining Engineering degree programmes at the University of Pretoria. OpenPit Mine Planning and Design Presented by the Department of

    Get Price
  • (PDF) Prediction of blast induced ground .

    Prediction of blast induced ground vibrations and frequency in opencast mine: A neural network approach Manoj Khandelwal IntroductionThe increasing development of opencast mines due to the enhanced demand for coal, and other minerals has lead to usage of huge amounts of explosives for blasting particularly in India.

    Get Price
  • Applicability of Controlled Blasting in Large .

    The Jayant Opencast Project is a coal mine producing 15.5 mtpa of coal and 51.5 Mm 3 of overburden is being removed through drilling and blasting. The mine is currently operating with dragline as

    Get Price
  • Blasting Pattern In Opencast Mining

    MINING Engineering Interview Questions with Answers pdf Free Download 1. Which cut is used for solid blasting in Indian coal Mines Wedge cut. 2. Permitted explosives are safe to use because Special chemical are used to extinguish the spark produced during blasting. 3. Burden is the distance between Distance between first row of blast holes .

    Get Price
  • Blast optimization at Kriel Colliery J r n a

    blast, contamination of coal or loss of coal. A simulation was developed in Microsoft Excel to model blasting results while changing various parameters. From the simulation results, it could be seen that a change of blast design could be beneficial. As an example, smaller drilling patterns were simulated (10 m x 10 m to 8 m x 8 m, and 8 m x 8 m to 7 m x 7 m in Pit 5 and Pit 6 respectively) in

    Get Price
  • Software for Mining – Mining and Blasting

    The BLASPA blast design simulators uses explosive and rock properties to predict blasting results, at your mine or construction site. Rock excavation is the first process in the cycle of operation of a mine, and efficient blasting is key to the profitability of the mine. DataVis DataVis has created Drill and Blast Software (DBS) a complete system to achieve efficiency of drill and blast

    Get Price
  • (PDF) COURSE BOOK : B.Tech(Mining Engg) (for .

    Sub codeMNL267 (300) SubUNDERGROUND COAL MINING ContentsIntroduction ; status of coal reserves, grade and rank of coals available in India, status of coal mining in India, mining conditions in Indian coalfields; choice of mining methods Development: Bord and Pillar, and Room and Pillar Mining; design of bord & pillar workings, the panel system, panels and interpanel barriers, size of

    Get Price