blast design optimization surface and underground

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Optimization of Blasting Parameters Using Regression ...

Efficiency of blasting operation in underground and sur- face mines determine to a large extent utilization of ... and are dependent on rockmass and blast design parame- ters such as hole diameter, burden, spacing among others. ... Regression models for the optimization of blasting pa- rameters of granite quarry were generated from the data

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A review of image analysis techniques for measuring blast ...

This paper discusses the growing interest in developing more reliable quantitative methods to characterize the size distribution of blasted rock in both surface and underground mines. The results of such work can form important input for blast design optimization and mine production control.

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Office of Surface Mining Reclamation and Enforcement (OSMRE)

Office of Surface Mining Reclamation and Enforcement (OSMRE)

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Blast Hole Drilling: The Basic Process | RPM Drilling

Aug 24, 2017· Therefore, effective blast design is paramount. The correct, or most effective blast design will always maximise fragmentation control; and will be developed based on the available data and research. Technique #2 – Underground blasting. In underground mining, blasting becomes one of the primary methods of rock excavation.

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BEST PRACTICES IN DRILL AND BLAST - IQPC

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

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BLAST FRAGMENTATION OPTIMIZATION AT TARKWA GOLD …

The Southern African Institute of Mining and Metallurgy Surface Mining 2008 Alexandra Amiel Page 113 BLAST FRAGMENTATION OPTIMIZATION AT TARKWA GOLD MINE USING 6 SIGMA METHODOLOGIES Miss Alexandra Amiel Goldfields Ghana Ltd Tarkwa Gold Mine Abstract: Tarkwa Gold Mine is owned by Gold Fields Ghana, IAMGOLD and the Government of

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TUNNELS, SHAFT AND DEVELOPMENT HEADINGS BLAST …

When underground blasting operations are close to occupied or otherwise sensitive structures, the level of ground vibration and noise (concussion) that the blast produces must be controlled. Special guidelines for controlling vibration and airblast are given in section 12—Blasting Vibration and Concussion. Determining Hole Size:

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A Comparative Study of Ground and Underground Vibrations ...

Oct 26, 2016· Ground vibrations originating from bench blasting may cause damage to slopes, structures, and underground workings in close proximity to an operating open-pit mine. It is important to monitor and predict ground vibration levels induced by blasting and to take measures to reduce their hazardous effects. The aims of this paper are to determine the weaker protection objects by …

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Blast Design | Itasca International

Design of monitoring systems for performance assessment and optimization. In addition to conventional analytical and empirical methods, Itasca has developed Blo-Up, a proprietary tool for blast analysis as part of the HSBM consortium. Blo-Up can be used to understand blasthole-to-blasthole interaction, optimize fragmentation and throw, and ...

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Underground Blast Design Seminar - Academy Blasting

The Underground Blast Design seminar offered by the Academy of Blasting and Explosive Technology is the world's only course the design and application of underground blasting. This seminar will not only teach you these principals from a technical aspect, but discuss the tricks of the trade that can help take someone who has never worked in a ...

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Rock Excavation Engineering Material Download

Blasting: mechanics of rock fragmentation by explosives, advances in explosives and their selection criteria for rock excavation, blast design for surface excavations and optimization. Advanced blast initiation systems, blast performance evaluation, cast blasting, technoeconomic and safety aspects of surface and underground blasting.

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Underground Blasting Optimization by Artificial ...

Blasting hazards such as ground vibration, flyrock, air blast and toxic fumes should be considered before blasting design stage. Especially blasting in tunnelling and underground mine, uneven break of perimeter area is an essential issue not only for ensuring the safe working environment but also for the profitability of the project.

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A Comprehensive Review of Applications of Drone Technology ...

on the design optimization of drones that has resulted in the development and fabrication of various ... including surface, underground, and abandoned mines, as demonstrated in Table1[18]. Table 1. ... Drones could measure blasting plumes with a concentration of 1 mg/m3

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Designing Blast Patterns Using Empirical Formulas

includ~d steps in planning a blast design and generalized blast patterns should be of help to the quarry operator. Design changes are recommended for those q~arries where problems are occurring. INTRODUCTION The Bureau of Mines has been conducting field studies of explosive blast­ ing in rock for a number of years.

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A New Perimeter Control Blast Design Concept for ...

This report presents a new concept in perimeter control blasting for underground metal/nonmetal mine drifting applications focusing on the importance of the buffer holes in a blast design. The new blast design concept applies the understanding of radial damage that is …

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Explosives Engineering - RESPEC

RESPEC's drill-and-blast experts have specialized experience in all aspects of blast design and optimization for metal/nonmetal surface and underground blasting, including specialty projects such as equipment rescue, collapse-blasting of voids and underground workings, explosive-storage design, blast …

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SHOTPlus™ - Blast design and modelling software for ...

Our SHOTPlus™ range of blast design and modelling software enable users to design, visualise and analyse blast initiation sequences across surface and underground mining, quarry and construction applications. SHOTPlus™ provides you the support and tools that you need to improve your productivity, safety and environmental performance.

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Drilling patterns - QueensMineDesignWiki

Blasting tunnels (or drifts) is a necessity in all underground mining operations. Drill and blast techniques are the most conventional and common method and is most useful in high UCS and homogeneous rock types albeit slower than other methods. These tunnels are created for many reasons including: Using the excavated space for transport

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[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 …

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Andries Sello Ramolotja - Director - Rams explosives ...

Blast Design surface and Underground Explosive Tender Adjudications Explosive application Underground and surface Blasters Provision Our Commodities of Speciality-Gold ... Blast investigation Mining Optimization Site Manager AELMS ( Goldfields ) Feb 2014 - Nov 2016 2 years 10 months. Westonaria Safety compliance ...

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BLAST MANAGEMENT PLAN 2012 2015

Surface Blasting operations at the Complex must be conducted in accordance with the provisions of: - NSW Department of Planning & Infrastructure - Project Approval, Integra Mining Complex - Coal Mine Health and Safety Act 2002 – (CMHSA 2002)

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Optimization of Blasting Operation in Opencast Mine

results because some parameters effects the blasting results i.e., improper design of blast pattern, poor implementation of blast design in field work and poor use of explosives. So, these operations are eliminated with making of better blast design from old ones means optimize the blast designs for better results and improve productivity. 2.

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Analysis of damage mechanisms and optimization of cut ...

Jun 01, 2017· Optimization of cut blasting design for a horizontal stress of 30 MPa and vertical stress of 70 MPa: (a) reducing the spacing of cut holes; (b) reducing the spacing of auxiliary holes. As seen from the simulation results, varying blasthole spacing can overcome excavation problems caused by the in-situ stress resistance.

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Explosives Engineering - RESPEC

Explosives Engineering. RESPEC's drill-and-blast experts have specialized experience in all aspects of blast design and optimization for metal/nonmetal surface and underground blasting, including specialty projects such as equipment rescue, collapse blasting of voids and underground workings, explosive-storage design, blast vibration and proximity concerns, mine-to-mill studies, and forensic ...

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Ring Blasting Design Modeling and Optimization

the maximum hydraulic radius, a criteria of blast design is defined (hole length, explosive, diameters, etc.) and optimization can be developed, as shown in the Case Study. Blasting modeling and optimization has no meaning without field monitoring and supervision, as both are complementary parts of the same thing.

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Engineering Geology Field Manual - Volume II - 2nd Ed ...

Chapter 19 BLAST DESIGN Introduction This chapter is an introduction to blasting techniques based primarily on the Explosives and Blasting Procedures Manual (Dick et al., 1987) and the Blaster's Handbook (E.I. du Pont de Nemours & Co., Inc., 1978). Blast design is not a precise science.

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Blaster's Training Module - miningquiz.com

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

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MDG3 Fans in underground coal mines

To change the design of, add to or take away from the plant where the change could affect health or safety. It does not include routine maintenance, repair or replacement. 1.6.2 Auxiliary fan A fan (other than a cooling fan for equipment or a scrubber fan) used underground to direct ventilation in part of an underground mine. 1.6.3 Booster fan

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