caving blasting parameters

  • ,Blasting parameters,

    11.Application of multipurpose gray decision in theoptimization of blasting parameters 12.The Research of Stope Blasting Parameter in Sublevel Caving Method with Large Space between;

  • (PDF) Design methodology for underground ring …

    and Chitombo Design methodology for underground ring blasting 14 Design parameters of base case SLC design ... E. T. Brown: ''Block caving geomechanics'', ICS study 1997–2000, University 22 Weighing function of 4D analysis (After Riihioja ...

  • SUBLEVEL CAVING TECHNIQUE by Partha D Sharma

     · In most of the sublevel caving system blasting parameters dominate in association with recovery when compared to drawpoint and geological parameters. Generally, sublevel caving …

  • Design and application of blasting parameters in forced …

    By analyzing the successful cases of forced caving with deep hole blasting on hard roof in fully mechanized working face,the irrationality of taking the radius of blasting fracture zone as the blasting parameters design in forced caving was presented,and it was put ...

  • Optimization of Blasting Parameters in opencast Mines

    National Institute of Technology Rourkela This is to certify that the thesis entitled " Optimization of Blasting Parameters in Opencast Mines " submitted by Sri Manmit Rout (Roll. No.: 10305019) and Sri Chinmay Kumar Parida (Roll. No ...

  • An Investigation into the Blast Design Parameters for …

    The ANN results showed that among the blast design parameters for induced blasting, front burden, front spacing, charge factor and total explosive quantity fired in a round were having the most significant influence on caving of roof rock.

  • The Block Cave Mining Method

     · The Block Cave Mining Method. Block caving is a large-scale underground mining method applicable to the extraction of low-grade, massive ore bodies. With the amount of literature available on block caving this report identifies the need to provide a simple understanding of the process. Understanding a production process of a block cave mine is ...

  • Table II from An Optimized Model for Blasting …

    DOI: 10.1109/ISCID.2009.122 Corpus ID: 16903923 An Optimized Model for Blasting Parameters in Underground Mines'' Deep-Hole Caving Based on Rough Set and Artificial Neural Network @article{Jiang2009AnOM, title={An Optimized Model for Blasting ...

  • Improved blasting results with precise initiation – Numerical simulation of sublevel caving blasting

    Report 2013:3 ISSN 1653-5006 Swedish Blasting Research Centre Luleå tekniska universitet, SE-971 87 Luleå Luleå University of Technology SE-971 87 Luleå Improved blasting results with precise initiation – Numerical simulation of sublevel caving

  • Sublevel caving

    Sublevel Caving is one of the most advanced mining methods. This method is usually undertaken when mining the orebody through an open pit is no longer economically viable. In Sublevel Caving, mining starts at the top of the orebody and develops downwards. Ore is mined from sublevels spaced at regular intervals throughout the deposit.

  • Study on Optimization of Blasting Parameters and its …

    The optimum model for blasting parameters of anchoring rock beam is established and its blasting parameters are optimized by making use of a strong mapped function of the neural networks technology with the typical samples of other practical smooth blasting ...

  • Blast-Induced Caving from Surface over Continuous Miner …

     · Since all the attempts to induce caving by underground blasting failed, an attempt was made from surface to induce the caving by destress blasting. This paper deals with the design of blasting parameters and execution of destress blasting keeping …

  • ENGINEERING GEOLOGY ROCK PARAMETERS FOR CONTROLLED ROCK BLASTING …

    Parameters for Blasting on the Highway Split-Dubrovnik. Rock Engineering in Difficult Ground Conditions - Soft Rocks and Karst - Vrkljan (ed), Balkema, Leiden, ISBN 978-0-415-80481-3, p.611-615, 2010., [3] Berta: Explsoives An Engineering Tool ...

  • Optimization of blasting design parameters on open pit bench

    bench blasting parameters was conducted for Nchanga caused by poor ro Where M C =charge per meter, D=charge hole diameter, (mm) U =explosive density, g/ cm2 Stemming, T acts as a seal, holds in the detonation gasses until the explosive has thumb of ...

  • A Back Analysis of Dilution and Recovery in Longitudinal Sublevel Caving

    Caving J. Player WA School of Mines, Australia V. Perera BHPBilliton Nickel West, Australia Abstract ... determined blasting parameters and draw geometry were the most significant influences on the longitudinal sublevel cave draw. Blasting parameters include ...

  • An overview of block caving operation and available methods for …

    methods where conventional drilling and blasting are employed as part of the production of the mine. This is due to reliance of block caving on natural processes for its success. The main geotechnical parameters affecting the planning of the block cave are

  • Blast design for improved performance and reduced surface …

    Mining is carried out with level caving, room-and-pillar mining and sublevel caving. Where exploitation is undertaken using caving methods, production blocks have the following parameters: length 37–65 m; width 27 m; height 50–74 m. A slot raise is 5 m

  • A Back Analysis of Dilution and Recovery in Longitudinal Sublevel …

    determined blasting parameters and draw geometry were the most significant influences on the longitudinal sublevel cave draw. Blasting parameters include tonnes per drill metre, powder factor, burden to spacing ratio and number of rings fired. Draw geometry

  • Designing Blast Patterns Using Empirical Formulas

    Calculation of Burden, B, From Equation 1 To use a certain explosive type with diameter, D. 8, the burden, B, can be calculated from equation 1. The following values for Ka are for rock with a solid density of around 2.7 gm/cc, a common value for limestone and dolomite.

  • Grit Blasting Parameters

     · Grit Blasting Parameters Hi forum, Since surface preparation is critical for adhesion mechanism between TS coating and ‎its substrate and most grit blasting operations are carried out with little parameters ‎controlling, I decide to ask the question about grit blasting recommended parameters.

  • An Optimized Model for Blasting Parameters in …

    Home Browse by Title Proceedings ISCID ''09 An Optimized Model for Blasting Parameters in Underground Mines'' Deep-Hole Caving Based on Rough Set and Artificial Neural Network Article An Optimized Model for Blasting Parameters in Underground Mines, ...

  • DRILLING AND BLASTING DESIGN BASED ON INVARIABLE MINING PARAMETERS

    blasting parameters for expected fragmentation results. Experimental blasts results are described and analysed to study the influence of charge parameters on particle size distribution. Obtained results could be used to design blasts on open pits to get pre Jr. of ...

  • Optmization of blasting parameters in open cast mines

     · The optimization of blast depends on the factor like the rock, explosives, initiation and drill hole parameters and there layout. This project highlights in developing a suitable blast model using simple methodologies which might be incorporated by mining industry to gain better blasting results.

  • Parameters influencing full scale sublevel caving material …

    Blasting parameters dominated correlations with recovery when compared to drawpoint and geological parameters. Introduction Sublevel caving (SLC) is a mass mining method based upon the utilisation of gravity flow of blasted ore and caved waste rock [1].

  • An Optimized Model for Blasting Parameters in …

    For better predicting and optimizing the blasting parameters in underground deep-hole mining, 16 groups of deep-hole blasting parameters are collected and collated, combining rough set and artificial neuron network theory, an optimized model for basting parameters in underground mines'' long-hole caving based on rough set and artificial neural network is set up. Adopting the rough set ...

  • Optimization and application of blasting parameters …

     · St. Belenyesi, Drilling and blasting technology for the sublevel caving mining method, Mine Pet. Gaze, 40(1989), No.9, p.433. Google Scholar [5] H. Wagner and P. Moser, Rock and rock mass properties prediction based on drilling parameters for underground ...

  • Effects of blast ring burden and explosive density on …

    458 Caving 2018, Vancouver, Canada recovery in controlled, production-scale experiments. The aim of this research is to improve recovery in SLC mines by testing the effect of blast design parameters hypothesised to increase recovery in previous studies.

  • The Impact of Blasting on Sublevel Caving Material Flow …

    Blasting parameters appear to dominate correlations with recovery when compared to geological and drawpoint related parameters. Although the neural network methodology provides a rigorous means to identify possible correlations between parameters, further data analysis was required to understand the nature and characteristics of these relationships.

  • Blasting and preconditioning modelling in underground cave …

    Keywords fragmentation, preconditioning, caving, blasting, structures, stresses, explosives. Introduction. Caving operations undermine a massive orebody to initiate the collapse, comminution, and flow of the ore to multiple drawpoints. Cave mining operations are facing greater challenges due to greater depths.

  • Drilling and blasting parameters in sublevel caving in …

    Drilling and blasting parameters in sublevel caving in Sheregesh mine AA Eremenko 1, VN Filippov 1, AI Konurin 1, AP Khmelinin 1, DV Baryshnikov 1 and EA Khristolyubov 2 Published 1 March 2018 • Published under licence by IOP Publishing Ltd

  • Underground Products, Services and Reference Guide 2010

    This permits blasting parameters to be optimised. The loading methodology, together with the emulsion characteristics enable excellent uphole retention. Complete coupling in the blast hole results in improved blast performance over packaged products and

  • Optimization of Blasting Parameters Using Regression Models …

    trollable blasting parameters of (hardness, uniaxial com- pressive strength, and density) and controllable blasting parameters (burden, spacing, bench height, borehole di- ameter, average charge per hole etc). In these models both geometric volume (V B) of blastN ...

  • Sub Level Caving

     · In most of the sublevel caving system blasting parameters dominate in association with recovery when compared to drawpoint and geological parameters. Generally, sublevel caving method employs use of fan drilling using long and smalldiameter holes, between sublevels or drill drifts to undercut and blast the ore-zone.

  • Blasting and preconditioning modelling in underground cave …

    parameters, case studies, and sensitivity analyses using numerical models. Keywords fragmentation, preconditioning, caving, blasting, structures, stresses, explosives. Introduction Caving operations undermine a massive orebody to initiate the collapsethe ore to

  • Influence of Blasting Parameters and Density of Rocks on Blast …

    The blasting parameters at the mine are such that a third of the hole is stemmed. This then means one point eight thirds of the hole is what is reserved M. I. Kulula et al. DOI: 10.4236/jmmce.2017.56028 344 J. Minerals and Materials Characterization and The ...

  • ANALYSIS OF BLOCK STABILITY FOR SEMI – LEVEL CAVING …

    to a group of methods with caving of ore and hanging wall rock. Methods with full caving of entire block are called the block methods. Block methods may include na-tural caving (block caving methods) or induced caving (single or double step cav-ing). Since

  • SUBLEVEL CAVING TECHNIQUE by Partha D Sharma

    In most of the sublevel caving system blasting parameters dominate in association with recovery when compared to drawpoint and geological parameters. Generally, sublevel caving method employs use ...

  • Parameters influencing full scale sublevel caving material …

     · Blasting parameters (charge length, powder factor, PPV breakage criteria, explosive sleep time, detonation issues, and nominal delay time) were found to be strongly related to primary recovery in marker Ring 3, and to a lesser extent tertiary recoveries in marker

  • Design & Operating Principles in Caving Methods

    Block Caving Design parameters (Laubscher, 2001) 41 Production Requirmnts Cavability Primary Fragment. Drift spacing Drawpoint interaction Draw zone spacing/pillar Drilling & blasting Hauling Crushing Layout Logistics Excavation

  • Design of a new layout for sublevel caving at depth

    Design of a new layout for sublevel caving at depth C Quinteiro 434 Caving 2018, Vancouver, Canada Seismic activity around the mining areas has caused falls of ground in some drifts and orepass instabilities resulting in undesirable production disturbances.

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