Copper Rock Blasting Pattern Method - search results

Copper Rock Blasting Pattern Method - search results

Copper Rock Blasting Pattern Method - search results
Application

(PDF) Selection of Most Proper Blasting Pattern in Mines Finally, blasting pattern with burden of 35 m, spacing of 45 m, stemming of 38 m and hole length of 12

Copper Rock Blasting Pattern Method - search results

  • (PDF) Selection of Most Proper Blasting Pattern in Mines

    Finally, blasting pattern with burden of 35 m, spacing of 45 m, stemming of 38 m and hole length of 121 m has been presented as the most suitable pattern obtained from15/01/2015· Model of rock blasting patterns evaluation for Sungun Copper Mine using DEALA method The Sungun Copper Mine, the largest open pit copper mine in Iran, is located in the East Azarbaijan province, Iran, 125 km North West of Tabriz This mine is part of the global copper belt (AlpHimalaya) that is situated in the middle of Qarabagh mountains In order to select the mostDevelopment of an evaluation system for Springer24/08/2014· In the second step numerical Taxonomy method was used for ranking the remaining efficient patterns and recognizing the most suitable pattern in the Sungun copper mine, Iran According to the obtained results, blasting pattern with burden of 3 m, spacing of 4 m and stemming of 32 m was selected as the best pattern and suggested to be considered for the future operationBlasting Operation Management Using Mathematical Methods

  • Numerical simulations of rock blasting OUP Academic

    01/12/2018· The ALE/JH2 method demonstrates a similar crack pattern to the DEMSPH hybrid method according to tests in intact rock disk blasting and jointed rock disk blasting, respectively The presence of discrete joints around the blast hole significantly alters the crack propagation around the blast hole Due to the reflection of stress waves from the joint surface both pressure and PPV decreasepattern The rock will move forward normally to the rows of holes If the holes are fired in oblique rows as in Figure 85, the rock mass would be thrown to the right during blasting (Figure 84) Typical bench cut with two free faces and fired with one delay per row (Figure 85) Direction of throw of blasted rock 115 Calculating Powder Factors The POWDER FACTOR is a relationship between howChapter 8 BLAST DESIGN NPS07/05/2014· In this paper, blasting patterns of the Sungun copper mine are ranked using AHPTOPSIS to find out the most suitable pattern covering the required level of the concerned attributes As a result, the blasting pattern with burden of 3 m, spacing of 4 m and stemming of 32 m was determined as the most suitable blasting patternSelecting the most suitable blasting pattern using AHPTOPSIS method: Sungun copper

  • Developing a mathematical assessment model for blasting patterns management: Sungun copper

    blasting patterns management: Sungun copper mine Unsuitable blasting pattern may lead to unwanted events such as poor fragmentation, back break and fly rock Multi attribute decision making (MADM) can be useful method for selecting the most appropriate blasting pattern among previously performed patterns In this work, initially, from various already performed patterns, efficient andpattern The rock will move forward normally to the rows of holes If the holes are fired in oblique rows as in Figure 85, the rock mass would be thrown to the right during blasting (Figure 84) Typical bench cut with two free faces and fired with one delay per row (Figure 85) Direction of throw of blasted rock 115 Calculating Powder Factors The POWDER FACTOR is a relationship between howChapter 8 BLAST DESIGN NPSwith an uncomplicated, firstapproximation method for designing blast patterns, considering geologic structure, and to show the valid use of the technique by comparing drill and blast pattern dimensions used in the quarry with those determined by the presented method The author visited 12 lime­ stone and dolomite,quarries in Ohio (Adams, Crawford, and Highland Counties), Wisconsin (MilwaukeeDesigning Blast Patterns Using Empirical Formulas OSMRE

  • Gypsum Blasting Pattern Method ricalewispl

    13/12/2018· Rock blasting for mining LinkedIn SlideShare 28072017· 6 The aspects concentrated in this report are: a) Purpose and scope of blasting b) Steps involved in blasting c) Blast design and patterns d) Methods of blasting e) Controlling factors of Blasting 7 7 10 Introduction: Most of the economic mineral deposits occur in association withhaving many methods of designing and calculating the layout of a blast pattern, the author follows a particular method according to Sharma,PA,2008 and small Blasting Swedish method developed by Langerfors and Kihlstrom (1976) are used (Jimeno et at ,1995) Different explosiveOptimization of blasting design parameters on open pit bench BLASTING PRACTICES AT A WESTERN US OPEN PIT COPPER MINE Joel Gadikor Montana Tech Follow this and additional works at:https://digitalcommonsmtechedu/gradrsch Part of theMining Engineering Commons This Thesis is brought to you for free and open access by the Student Scholarship at Digital Commons @ Montana Tech It has been accepted for inclusion in Graduate Theses & NonOPTIMIZATION OF DRILLING AND BLASTING PRACTICES AT A WESTERN US OPEN PIT COPPER

  • PROCEDURES FOR BLASTING New York State Department of Transportation

    explosives per delay, the loading density, and the delay pattern A preblast condition survey of a structure may be required prior to blasting 3 Displacement of Bedrock Blasting, primarily trench and ditch blasting, can displace rock and damage adjacentIn this study, rock mass properties, blasthole parameters, powder factor (q), and fragment size distribution of blasted rock using image analysis technique were determined for several blasting(PDF) Rock Fragmentation by Blasting – a review ResearchGate17/12/2009· Presplitting: Presplitting is the smooth blasting method in which cracks for the final contour are created by blasting prior to the drilling of the rest of the holes for the blast pattern This is an effective way of restricting backbreak and ground vibration in large open pit, quarry blasting Presplitting helps in isolating blasting area from remaining rock mass by creating an artificialTechniques of Controlled Blasting SlideShare

  • Investigating and Ranking Blasting Patterns to Reduce

    blasting method In this work, 45 blasting patterns used for the Sungun copper mine are studied and evaluated to help determine the most suitable and optimum blasting pattern for reducing the ground vibration Additionally, due to the lack of certainty in the nature of ground and the analyses relating to this drilling system, in the first step, a combination of the imperialist(DEA); Blasting Pattern; Sungun Copper Mine Summary Blasting is one of the most important operations in the mining projects Inappropriate blasting pattern may lead to unwanted events such as poor fragmentation, back break, fly rock etc and affect the whole operation physically and economically In fact selecting of the most suitable pattern among previously performedA NOVEL INVESTIGATION IN BLASTING OPERATIONblasting patterns management: Sungun copper mine Unsuitable blasting pattern may lead to unwanted events such as poor fragmentation, back break and fly rock Multi attribute decision making (MADM) can be useful method for selecting the most appropriate blasting pattern among previously performed patterns In this work, initially, from various already performedDeveloping a mathematical assessment model for blasting

  • Designing Blast Patterns Using Empirical Formulas

    2 Generalized blasting patterns showing B, S, b, and s5 TABLES 1 Calculation sheetdrill pattern dimensions for average and alternative blasting conditions9 2 Blasting pattern dimensions for Ohio, Adams County, Quarry No 111 3 Blasting pattern dimensions for Ohio, Highland County,13/12/2018· 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 Designing Blast Patterns Using Empirical Formulas Designing BlastGypsum Blasting Pattern Method ricalewisplSarcheshmeh copper mine abstract Ground vibrations arising from rock blasting is one of the fundamental problems in the mining industry, and predicting it plays an important role in the minimization of environmental complaints To evaluate and calculate the blastinduced ground vibration by incorporating blast design and rock strength, artificial neural networks (ANN) andDevelopment of a model to predict peak particle velocity

  • OPTIMIZATION OF DRILLING AND BLASTING PRACTICES AT A

    BLASTING PRACTICES AT A WESTERN US OPEN PIT COPPER MINE Joel Gadikor Montana Tech Follow this and additional works at:https://digitalcommonsmtechedu/gradrsch Part of theMining Engineering Commons This Thesis is brought to you for free and open access by the Student Scholarship at Digital Commons @ Montana Tech It has been accepted for inclusionA strategy for this is a staggered pattern so that blasted rock in one area has time to clear while another spot is blasted Blasting holes with slight delays between them provides the better results than an instantaneous blast due to the reverberation of stress waves and the use of newly developed free faces The optimum delay increases with burden where approximately 5ms/mDrilling patterns QueensMineDesignWiki01/06/2013· Highlights An RES (rock engineering systems) based model was used to assess risk and predict rock fragmentation by blasting The level of fragmentation risk obtained shows a good consistency with the fragmentation measured A predictive equation with R 2 =055 was obtained for rock fragmentation The results obtained were compared with regression andA rock engineering systems based model to predict rock

  • InSitu Leaching & Borehole Mining

    14/01/2019· Blasting of the second area should shake up the first area and restimulate copper production One of the important obstacles to wider application of the in situ leaching method in copper mining is the uncertainty in predicting final recovery To help resolve some of this uncertainty, the Bureau used data from the Sierrita and Emerald Isle