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how to improve explosive efficiency in opencast mines

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  • Draft Technology Roadmap for Coal Sector

    Draft Technology Roadmap for Coal Sector

    opencast mines with flatter gradients. In pit crushing of coal is generally found to be economical in high-capacity opencast mines where reasonable lead distance and lifts are involved.

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  • Blasting Misfire: A Review of Causes, Economic Effect, Control and

    Blasting Misfire: A Review of Causes, Economic Effect, Control and

    11;Inadequate study of pre-mining conditions of structures within surrounding environments of mining activities that utilize blasting for fragmenting rocks have led to a series

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  • Rock Fragmentation Control In Open Cast Mining

    Rock Fragmentation Control In Open Cast Mining

    the mine. Presently, seams R-V and R-VI are being extracted by opencast method of mining. The mine is producing about 4.5 Mt of coal and removal of overburden is about 12 Mm. 3. The

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  • Optimization of Blasting Operation | PDF | Mining | Drilling

    Optimization of Blasting Operation | PDF | Mining | Drilling

    Optimization of Blasting Operation - Free download as PDF File (.pdf), Text File (.txt) or read online for free. This document summarizes a thesis submitted by 6 students for their Diploma

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  • Rock fragmentation control in opencast mines | PPT

    Rock fragmentation control in opencast mines | PPT

    2020523;2. Precise long hole drilling allows for larger sublevel spacing and vertical crater retreat (VCR) mining which improves efficiency and productivity. 3. In VCR mining, parallel

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  • Controlled blasting in a line mine using electronic detonators…

    Controlled blasting in a line mine using electronic detonators…

    201711;Explosives and blasting techniques play a significant role in efficient opencast mining operations. There have been constant technological developments towards safer,

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  • Evaluation of Blasting Efficiency in Surface Mines

    Evaluation of Blasting Efficiency in Surface Mines

    Drilling and blasting are the major unit operations in opencast mining. In spite of the best efforts to introduce mechanization in the opencast mines, blasting continue to dominate the production.

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  • %HVW3 UDFWLFH* XLGHOLQHVIRU WKH0 DQDJHPHQWR

    %HVW3 UDFWLFH* XLGHOLQHVIRU WKH0 DQDJHPHQWR

    holes in opencast coal mines. The main objectives of this BPG are: • To provide some guidance on some of the best practices that can be utilised by opencast coal mines to identify hot holes.

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  • (PDF) Applicability of Controlled Blasting in Large Opencast Mine

    (PDF) Applicability of Controlled Blasting in Large Opencast Mine

    Ever growing demand in minerals and coal has compelled the mine operators to increase the size of mine, which has resulted in an increasing trend towards large capacity open cast projects.

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  • (PDF) Applicability of Controlled Blasting in Large Opencast Mine

    (PDF) Applicability of Controlled Blasting in Large Opencast Mine

    Ever growing demand in minerals and coal has compelled the mine operators to increase the size of mine, which has resulted in an increasing trend towards large capacity open cast projects.

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  • Explosives and Blasting Practices in Mines | PDF

    Explosives and Blasting Practices in Mines | PDF

    Last two decades have witnessed remarkable increase in the use of high explosives, improvement in rock blasting environment and changing state-of-the-art technology in blasting

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  • CORE – Aggregating the world’s open access research papers

    CORE – Aggregating the world’s open access research papers

    CORE – Aggregating the world’s open access research papers

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  • Controlled blasting in a line mine using electronic

    Controlled blasting in a line mine using electronic

    2017125;Except for very deep-seated deposits, open cast mining method has been recognized as the safest and most productive mode for mining minerals. Ever growing

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  • Evaluation of Blasting Efficiency in Surface Mines

    Evaluation of Blasting Efficiency in Surface Mines

    Drilling and blasting are the major unit operations in opencast mining. In spite of the best efforts to introduce mechanization in the opencast mines, blasting continue to dominate the production.

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  • (PDF) ROCK BLASTING FOR MINING

    (PDF) ROCK BLASTING FOR MINING

    2017415;efficient use of the explosive energy in the blast. Abstract- The blasting operation plays an important task in the overall economics of opencast mines. The degree of

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  • (PDF) METHOD FOR CALCULATION OF DRILLING-AND

    (PDF) METHOD FOR CALCULATION OF DRILLING-AND

    2019930;The relative force coefficient was determined for the emulsion explosive of "Ukrainit" type taking into account the extent of detonation velocity realization, which allowed to calculate the

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  • Research on blasting mechanism and blasting effect of

    Research on blasting mechanism and blasting effect of

    In order to achieve energy conservation and eficiency and to promote the country’s energy transition, there is a need to develop and research on opencast step blasting and apply

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  • Optimization of blasting parameters in opencast mine with the

    Optimization of blasting parameters in opencast mine with the

    823;In order to optimize the blasting parameters, a good predictor of such vibration is to be created. Hence, the paper compares a lot of predictors including empirical formulas and

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  • Controlled Blasting in a Line Mine using Electronic

    Controlled Blasting in a Line Mine using Electronic

    mining minerals. Ever growing demand in minerals and coal has compelled the mine operators to increase the size of mine, which has resulted in an increasing trend towards large capacity

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  • (PDF) Optimization of Blasting Parameters

    (PDF) Optimization of Blasting Parameters

    2015920;In hard rock mining, blasting is the most productive excavation technique applied to fragment in-situ rock to the required size for efficient loading and crushing.

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  • Ministry of Coal, GOI

    Ministry of Coal, GOI

    Ministry of Coal, GOI

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  • Stemming and best practice in the mining industry: A

    Stemming and best practice in the mining industry: A

    112;Snelling and Hall (1912) found that the use of even the least efficient stemming materials may increase the useful energy of a shot by 60%, and by up to 93% for the most

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  • Controlled Blasting in a Line Mine using

    Controlled Blasting in a Line Mine using

    201711;Ever growing demand in minerals and coal has compelled the mine operators to increase the size of mine, which has resulted in an increasing trend towards large capacity

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  • Controlled Blasting in a Line Mine using Electronic

    Controlled Blasting in a Line Mine using Electronic

    mining minerals. Ever growing demand in minerals and coal has compelled the mine operators to increase the size of mine, which has resulted in an increasing trend towards large capacity

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  • (PDF) Controlled blasting in a line mine using electronic

    (PDF) Controlled blasting in a line mine using electronic

    Ever growing demand in minerals and coal has compelled the mine operators to increase the size of mine, which has resulted in an increasing trend towards large capacity open cast projects.

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  • A Case Study on Optimization of Blasting Operationin

    A Case Study on Optimization of Blasting Operationin

    In the present study we tried to identify the optimization of blast design by by means of blasting parameters. This is simple to use because it can compare explosive performance by changing

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  • Arvind MISHRA | Professor | PhD (Mining Engineering)

    Arvind MISHRA | Professor | PhD (Mining Engineering)

    Blasting is a cost-efficient and effective technique that utilizes explosive chemical energy to generate the necessary pressure for rock fragmentation in surface mines.

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  • Controlling fragmentation

    Controlling fragmentation

    of mining. An increasing proportion of minerals are being produced from bigger, deeper, higher strip ratio, lower grade deposits. This in turn increases the need for productivity from the

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  • Charging and blasting in hot strata condition in opencast coal mines

    Charging and blasting in hot strata condition in opencast coal mines

    201011;The general growth of mining activities in India, the presence of underground mines beneath the populated areas and the greater awareness have all necessitated an in

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  • Blast‐Casting Mechanism and Parameter

    Blast‐Casting Mechanism and Parameter

    Blast-casting practice in opencast coal mines is characterised by large blast hole diameter and large charges. The powerful energy produced by the explosive would break the rock mass into

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