Pattern Design Drilling Blasting

blast pattern Mining and Blasting

2012-10-12· In these cases, the firing pattern can be used to control the blast direction in a more favourable direction and improve the blasting result. Before drilling, the blast direction should be set according to the orientation of the main jointing systems. Fragmentation, backbreak and toe problems are all dependent upon the blasting direction.

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Designing Blast Patterns Using Empirical Formulas

DESIGNING BLAST PATTERNS USING EMPIRICAL FORMULAS A Comparison of Calculated Patterns With Plans Used in Quarrying Limestone and Dolomite, With Geologic Considerations by Joseph M. Pugliese 1 ABSTRACT This work was done by the Bureau of

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Tunnel Blast Design hkieged

Geological Effects On Tunnel Blast Design The Importance of Accurate Drilling • Modern Jumbo’s are computer controlled and generally place blastholes close to their design position in the face, however • The ‘ power ‘ of modern drifters is high and if the Jumbo operator elects to drill at the highest penetration rate, blastholes can deviate within the face • This is

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Blasting pattern design 1 Underground Mining -Theory

2019-08-11· It is desirable that blasting pattern is simple in order to be easily drilled at site. Therefore, it is best practice to align boreholes in rows or to follow alignment as much as possible. After design it is necessary to determine basic blasting parameters as follows.

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Blast Design Software Blasting Pattern Software Blast

Blast Design. Generates blast plan and according to the delay pattern structure, simulation. BLAst DESigner Software (BLADES) calculates blast plan parameters, explosives charge distribution, initiation timing and sequence, results in terms of rock breakage and fragment size distribution.

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Blasting

Drilling Large Deposits Blast Pattern Design . 5-hole Burn-Cut . Various Burn-Cuts . V-Cut . Firing Sequence. Firing sequence for a large tunnel round. Smooth wall Blasting. Applied Explosives Technology For Construction and Mining, Stig Olofsson, 1997 . Ground Support for Drifts and Tunnels. Objective to mobilize and enhance the inherent strength of the rock mass so that it becomes self

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Chapter 8 BLAST DESIGN National Park Service

Chapter 8 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 than one face so that simple blasting patterns can be used to

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tunnelcanada.ca

tunnelcanada.ca

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Blasting

Drilling Large Deposits Blast Pattern Design . 5-hole Burn-Cut . Various Burn-Cuts . V-Cut . Firing Sequence. Firing sequence for a large tunnel round. Smooth wall Blasting. Applied Explosives Technology For Construction and Mining, Stig Olofsson, 1997 . Ground Support for Drifts and Tunnels. Objective to mobilize and enhance the inherent strength of the rock mass so that it becomes self

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osmre.gov

osmre.gov

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6.1. GENERAL

6.2.1 Drilling and blasting DRILLING PATTERN DESIGN The drilling pattern ensures the distribution of the explosive in the rock and desired blasting result. Several factors must be taken into account when designing the drilling pattern: rock drillability and blastability, the type of explosives, blast vibration restrictions and accuracy

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Drilling and blasting powerpoint 2003 SlideShare

2012-04-21· DRILLING PATTERNS Selection of drilling pattern varies with the type and size of the drill’s used, depth of hole, kind of rock, quantity, rapidity of the explosive & amount of steaming. 13. BLASTING DEFINITION- The process of breaking rocks into smaller pieces by use of explosives. TYPES OF EXPLOSIVES- Explosives based on chemical nature Explosives based on availability

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Blast Design Software Blasting Pattern Software for Mining

Empirical formulas have been applied to the drilling and blasting pattern design. BLADES provide the following features:- Generates optimized charging sheet for the blast. Generates blast plan and according to the delay pattern structure, a simulation of the blasting model can be watched.

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The basic patterns of drill holes employed in opencast

• The basic patterns of drill holes employed in opencast mines are • Square Pattern • Staggered (or) Triangular pattern • Single row blasting pattern • Multi blasting pattern • Wedge cut pattern • Diagonal blasting pattern • Square Pattern: • This pattern can also be called as multi row pattern.

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Improved technologies in longhole blast hole drilling

led to changes in drilling patterns and the method of charging holes. Considerable success has recently been achieved in this field. Improved technologies in longhole blast hole drilling, applied to dropraising and longhole stoping as well as the application of a small twin

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Rock Engineering Practice & Design

Drill & Blast Drill & Blast –– Blast Pattern DesignBlast Pattern Design One of the basic principles of designing the configuration and sequential detonation of blastholes in a one blast, is the presence of a free face parallel or sub-parallel to the blast holes, as detonation occurs. In some

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Appendix E6 Canada.ca

controlled drilling and blasting must be needed to allow safe operation of the pit. 2. Drilling Production drilling will be done with electric drills with a 15m bench height. Similar sites and a study done by Orica (refer to Appendix A KSM-SABREX Study) show that a drill hole diameter of

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iseegoldenwest

iseegoldenwest

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Open Pit Blasting Pattern Design with Cognito V.2 Mining

2016-10-07· Open Pit Blasting Pattern Design Here is a new style of form that has calculation of Open Pit Blasting Pattern Design. With this form you can register your email and then calculated fields will be sent to you via e-mail with pdf format. I think this form is more useful and easier way to share

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(PDF) ROCK BLASTING FOR MINING ResearchGate

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

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Underground Drilling and Blasting Training DVD ACG YouTube

2012-10-23· All underground mine workers will be exposed to drilling and blasting processes. The aim of this new DVD is to provide workers with the critical knowledge on drilling and blasting to aid

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A New Perimeter Control Blast Design Concept for

range of blast patterns, cut designs, hole spacings for the perimeters, the number of empty holes and spacing for line drilling, perimeter burdens, explosive types used, use of perimeter hole decoupling to prevent damage, blast round length, and variability in cross-sectional arch design

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Blasting pattern design 1 YouTube

2019-08-16· Underground blast design using spiral cut. This video is unavailable. Watch Queue Queue

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Optimized design of drilling and blasting operations in

Most previous works have focused on drilling and blasting just in terms of costs reduction by different means. Afeni and Afum et al. tried to investigate the cost effects of different drilling equipment and blasting patterns respectively in two open pit mines through experimental and onsite observations,.

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I-Blast Software

Create and manage your blast design. The quick and affordable way to create blast design, I-Blast Standard is the ideal solution for blaster or mining engineers. Create your own blast design using versatile tools. Easily import surveyed drilling pattern from from standard survey programs or just use the included pre-built content to get started

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(PDF) Blasting Design for Tunnels ResearchGate

A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text.

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Blast Maker Mining Technology Mining News and Views

Drilling and blasting design software. Blast Maker PTC is a comprehensive solution for creating optimal designs for drilling and blasting in rocks of various strengths in open pits while keeping the main and auxiliary equipment in operation. Blast Maker PTC consists of information-analytical software and technical facilities for the collection

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Deswik.OPDB (Open Pit Drill and Blast Design)

Construct hole templates with design parameters such as fixed or variable collar or toe spacing, angle changes and variable toe horizons. Audit drill patterns against blast

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