blAst dEsigN opTImiZAtIoN surFAce aND UNdeRGroUnd

  • blast design optimization surface and underground

    Blast Design and Assessment for Surface Mines and Quarries consists of 36 viewing sessions of 30 - 60 minutes each with supporting figures, tables and examples, a glossary of blasting and excavation terminology, and interactive course reviews. More. Optimization of Blasting Parameters in opencast Mines.

  • Blast optimization at Kriel Colliery J r n a

    2015-4-16 · surface and underground mining methods. The ... Blast optimization at Kriel Colliery ... 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

  • Optimization of blasting parameters for an underground ...

    2021-7-8 · Optimization of blasting parameters for an underground mine through prediction of blasting vibration ... Criteria for safety and design of structures subjected to underground blast. ISI Bulletin IS-6922. Google Scholar. Donald, GA, Shahram, T, Keith, A(2013) Ground vibrations produced by surface and near-surface explosions. Applied Acoustics 74 ...

  • (PDF) Blast design for underground long hole stope to ...

    2021-12-29 · Blast design for underground long hole stope to safeguard surface industrial structures from blast induced vibration June 2018 Conference: Fragblast 12- 12th International Symposium on Rock ...

  • Optimization of Blasting Parameters in opencast Mines

    2021-8-20 · less wastage of explosive energy in blasting, less throw of materials, and reduction of blast vibration resulting in greater degrees of safety and stability to the nearby structures. Development of a Blast Optimization Model Selection of proper explosive in any blasting round is an important aspect of optimum blast design.

  • An analysis of burn cut pull optimization through varying ...

    2020-10-28 · – A vertical rock surface in an underground mining operation. Burn Cut – A type of opening cut blast design that utilizes one or more empty relief holes to give relief to the round’s charged holes. Pull – The depth to which an underground round breaks; measured in comparison to the length of the loaded boreholes in the round. Bootleg

  • TUNNELS, SHAFT AND DEVELOPMENT HEADINGS

    2018-4-25 · _____Tunnels, Shaft, and Development Headings Blast Design REVEY Associates, Inc. 2005 Page 9 Heading Round Design Approach: When the objectives of heading round design are reviewed, it becomes apparent that different parts of the round are expected to perform different functions.

  • [PDF] Optimization of blasting parameters in opencast ...

    Development of a Blast Optimization Model Selection of proper explosive in any blasting round is an important aspect of optimum blast design. Basic parameters include VOD of explosive (m/s), Density (g/cc), Characteristic impedance, Energy output (cal/gm), and Explosive type (ANFO, Slurry, Emulsion etc.).

  • Surface Mine Blasting - OSMRE

    2014-4-2 · tation with new blast design technology and recent developments in both methods and equipment, for potential improvements in blasting practices. This paper out­ lines surface mine blasting research com­ pleted since the Bureau's last Technology Transfer seminar on blasting in December 1980. Three programmatic areas--produc­

  • BEST PRACTICES IN DRILL AND BLAST - IQPC Corporate

    2017-5-9 · rock properties and surface blast design – to devise effi cient and cost effective blasting that achieves desired degrees of fragmentation. Developing a practical approach to selecting explosives includes: • Evaluating the rock characteristics as best as the available data allows; • Identifying explosive characteristics required to

  • Blast optimization at Kriel Colliery J r n a

    2015-4-16 · surface and underground mining methods. The ... Blast optimization at Kriel Colliery ... 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

  • blast design optimization surface and underground

    Both for underground and opencast mining , Optimization of blast design in many cases has , surface blasting vis-a-vis establishment of blast vibration threshold [Live Chat] shallow hole blasting ore mining - sgatin

  • Charge design scheme optimization for ring blasting

    2018-10-1 · Moreover, in the design of the underground mine blast, it is common to use twice powder factor than that of open pit blasting to ensure fine breakage in the limited space available. 1 Thus, it is important to prevent adverse phenomena caused by the concentration of energy, especially in the lower part of the ring, by improving the quality of ...

  • Designing Blast Patterns Using Empirical Formulas

    2014-4-2 · the blast patterns calculated by empirical formulas to quarry blasting - patterns producing satisfactory results, with geology considered in the blast designs. Design changes were recommenced for those quarries where problems were occurring and where the 'calculations suggested a change.

  • 33 New Blast designer for | All Picture Design Ideas

    2021-12-25 · Classic Blast Bundle 1996. Ventus Royal Duo Blast Cans 1198. Design and plan drill and blast patterns for surface and underground mining. ARA is dedicated to helping our customers design safe structures and offers software products that assist engineers in the analysis and design of building structures subject to dynamic loads including blast.

  • BEST PRACTICES IN DRILL AND BLAST - IQPC Corporate

    2017-5-9 · rock properties and surface blast design – to devise effi cient and cost effective blasting that achieves desired degrees of fragmentation. Developing a practical approach to selecting explosives includes: • Evaluating the rock characteristics as best as the available data allows; • Identifying explosive characteristics required to

  • An analysis of burn cut pull optimization through varying ...

    2020-10-28 · – A vertical rock surface in an underground mining operation. Burn Cut – A type of opening cut blast design that utilizes one or more empty relief holes to give relief to the round’s charged holes. Pull – The depth to which an underground round breaks; measured in comparison to the length of the loaded boreholes in the round. Bootleg

  • (PDF) ROCK BLASTING FOR MINING - ResearchGate

    2021-12-28 · A typical surface blast design will have a set of blast holes charged with explosives. In this illustration, we can see the lay out. The rows are designated with sequential num bers.

  • PROCEDURES FOR BLASTING

    2015-9-17 · include topography, blast design, and atmospheric conditions. Blasts may have to be redesigned or rescheduled for more favorable atmospheric conditions to minimize air waves. 6. Misfires Misfires happen when a loaded hole, portion of a loaded hole, or several loaded holes fail to detonate during a blast.

  • Understanding the connection between blasting and

    2019-1-1 · Surface mines continue to implement highwalls for several reasons, such as increasing recovery, improving margins, and justifying higher stripping ratios. Highwall stability is a complex issue that is dependent upon a variety of mining and geologic factors, and a safe design is necessary for a successful surface operation.

  • 33 New Blast designer for | All Picture Design Ideas

    2021-12-25 · Classic Blast Bundle 1996. Ventus Royal Duo Blast Cans 1198. Design and plan drill and blast patterns for surface and underground mining. ARA is dedicated to helping our customers design safe structures and offers software products that assist engineers in the analysis and design of building structures subject to dynamic loads including blast.

  • A New Perimeter Control Blast Design Concept for ...

    2013-3-7 · A NEW PERIMETER CONTROL BLAST DESIGN CONCEPT FOR UNDERGROUND METAL/NONMETAL DRIFTING APPLICATIONS Stephen R. Iverson, William A. Hustrulid, and Jeffrey C. Johnson Office of Mine Safety and Health Research National Institute for Occupational Safety and Health Abstract This report presents a new concept in perimeter control blasting for ...

  • Designing Blast Patterns Using Empirical Formulas

    2014-4-2 · the blast patterns calculated by empirical formulas to quarry blasting - patterns producing satisfactory results, with geology considered in the blast designs. Design changes were recommenced for those quarries where problems were occurring and where the 'calculations suggested a change.

  • Chapter 8 BLAST DESIGN - NPS

    2014-6-11 · BLAST DESIGN (Figure 8-2) Staggered pattern (Figure 8-3) Sing (Figure 8-1) 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

  • An analysis of burn cut pull optimization through varying ...

    2020-10-28 · – A vertical rock surface in an underground mining operation. Burn Cut – A type of opening cut blast design that utilizes one or more empty relief holes to give relief to the round’s charged holes. Pull – The depth to which an underground round breaks; measured in comparison to the length of the loaded boreholes in the round. Bootleg

  • BEST PRACTICES IN DRILL AND BLAST - IQPC Corporate

    2017-5-9 · rock properties and surface blast design – to devise effi cient and cost effective blasting that achieves desired degrees of fragmentation. Developing a practical approach to selecting explosives includes: • Evaluating the rock characteristics as best as the available data allows; • Identifying explosive characteristics required to

  • DESIGN OF SURFACE BLASTS- A COMPUTATIONAL

    2009-4-30 · Chapter: 04 SURFACE BLAST DESIGN 39 4.1 Introduction 4.2 Small Diameter Bench Blast design 4.3 Large Diameter Bench Blast design 4.4 Computational Approach 4.4.1 flow sheet 4.4.2 The software (OCBLASTS 1.0) 4.4.2.1 Designed model in C++ 4.4.2.2 Design model In Net Beans 4.4.3 field trials 40 41 45 49 49 52 52 54 59 Chapter: 05 CONCLUSIONS 60

  • Blaster’s Training Module

    2019-8-11 · Module 3. Surface-Blast Design 1-36 Overview 1-5 Objectives 6 Highwall Stability 7-9 Control Blasting 10-12 Hole Diameter and Depth 13 Blast Theory 14-16 Review Questions / Answers and Discussion 17-18 Blast Design 19-33 Review Questions / Answers and Discussion 34-36 Module 4. Blasthole Drilling 1-27 Overview 1-3 Drilling Methods 4

  • PROCEDURES FOR BLASTING

    2015-9-17 · include topography, blast design, and atmospheric conditions. Blasts may have to be redesigned or rescheduled for more favorable atmospheric conditions to minimize air waves. 6. Misfires Misfires happen when a loaded hole, portion of a loaded hole, or several loaded holes fail to detonate during a blast.

  • Calculation of Blast Loads for Application to Structural ...

    design structural members, sections and connections that will ensure sufficient robustness of the building to survive the effects of the computed actions. In the current technical guide, an overview of a design procedure for structures under blast loading is provided. The material presented has been collected from various sources and