We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byAshlynn Bartell
Modified about 1 year ago
better together... we deliver SASOL CHEMICALS BASE CHEMICALS (EXPLOSIVES) MOSH - "Day of Learning" 2014
better together... we deliver Copyright ©, 2014, Sasol Confidential 2 Topic: Energy partitioning / sequential firing and the use thereof – ‘back to basics’
better together... we deliver Copyright ©, 2014, Sasol Confidential Eliminating falls of ground 3 Define the requirements Define the problem and determine what is to be achieved? Identify how it is to be achieved and keep it simple Improve blasting results, safely
better together... we deliver Copyright ©, 2014, Sasol Confidential Eliminating falls of ground 4 Define the hazard – common reasons for ‘falls of ground’ Natural Geological discontinuities Rock bursts Planning Mining method Mine discipline Support or roof bolting not effective Training Knowledge of workers Barring or scaling Blasting Incorrect use of equipment
better together... we deliver Copyright ©, 2014, Sasol Confidential Plant Loading & hauling Priming, Charging & Blasting Eliminating falls of ground 5 Define the hazard – interaction of everybody to address ‘falls of ground’ Plan for improvements in ‘falls of ground’ & accurately execute blast design Drilling Excavation preparation SurveyPlanningGeology Plan: blast design Do: departmental performance Measure: each department in value chain Review & Improve Are you prepared to change?
better together... we deliver Copyright ©, 2014, Sasol Confidential Eliminating falls of ground 6 Define the requirements – ‘falls of ground’ are influenced by Energy / Energy / Energy Energy Distribution Location of hole - marking Hole diameter Burden and spacing Careful implementation of drill pattern Directionality of drilling Available Energy Correct amount and type of explosives for required for specific conditions Manage site sensitivity - geology Evaluate energy for special conditions – poor floor, large toe burdens, geology Release of Energy Control & ensure the ‘path of least resistance’ Correct use stemming – containment of energy Blast holes loaded according to geology Match timing to existing field conditions – wet, fractured Accurate delays
better together... we deliver Copyright ©, 2014, Sasol Confidential Product selection 7 Plan – Do – Measure - Review Initiation control Explosive energy Output of rockPhysical effort Detonation and Energy Release starter initiation devices explosives wasted energy cast damage fragmentation BLASTING PROCESS RESULTPREPARATION loading / cleaning / hauling Charging-up and Stemming Geology, Standards and Support preparation marking drilling
better together... we deliver Copyright ©, 2014, Sasol Confidential Blast optimisation 8 Quality ultimately equals quantity The objectives of any blast is: Maximum advance per blast Minimise surrounding rock damage Minimise the effort Reduce overall costs (explosives & accessories, time, drilling) Maximise the yield Effective relief = maximum advance with minimal perimeter damage (‘falls of ground’ reduction) 36.0cm (advance) = 1.0cm (relief required) ADVANCE IS NOT DETERMINED BY THE SIZE OF THE EXCAVATION!
better together... we deliver Copyright ©, 2014, Sasol Confidential Blast optimisation 9 Relief + accuracy + correct level of energy = competent perimeter results 1.2m x 1.2m tunnel 5.2m advance 4.2m x 4.2m tunnel 8.54m advance
better together... we deliver Copyright ©, 2014, Sasol Confidential Blast optimisation 10 Reliability + Accuracy = Safety a = 171 / 190 38 x 6 = 228
better together... we deliver Copyright ©, 2014, Sasol Confidential 11 Hole distribution & charge efficiency ensures success The cut & easers are marked as an equilateralCharge mass = 0.25 to 0.65kg / m triangle (base / 1.155) = height charge mass for 3.2m (@ 0.45) = 1.17kg (@ 0.65) = 1.70kg 342/ 1.155 = 296 Blast optimisation
better together... we deliver Copyright ©, 2014, Sasol Confidential 12 Sequential firing / powder factor & creating the relief Blast optimisation GRADE LINE 7 8 5 6 9 9 9 9 10 11 10 11 10 16 10 11 10 11 16 11 12 11 12 13 11 14 15 17 6 1 2 3 4 11 12 16 General guide Cut = 0.4 to 0.6 kg/m Easers = 0.6 to 0.8 kg/m Production = 1.40 kg/m Lifter = 1.40 kg/m Perimeter = 0.2 to 0.4 kg/m General guide Cut = ANFO, emulsion, watergel Easers = ANFO, emulsion, watergel Production = ANFO, emulsion, watergel Lifter = ANFO, emulsion, watergel Perimeter = ANFO, emulsion, watergel
better together... we deliver Copyright ©, 2014, Sasol Confidential 13 Blast optimisation Sequential firing / powder factor & creating the relief General guide Cut = 0.6 to 0.8 kg/m Easers = 0.6 to 0.8 kg/m Production = 0.6 to 0.8 kg/m General guide Cut = ANFO, emulsion, watergel Easers = ANFO, emulsion, watergel Production = ANFO, emulsion, watergel
better together... we deliver Copyright ©, 2014, Sasol Confidential 14 Standard deviation & safety Accuracy the key to success & sequential firing Cushion disc Shock tube Bushing Isolation cup Pyrotechnic delay train Lead azide primary charge PETN Base charge Flatland crimp Seal crimp Ø 7.5mm Aluminum cap shell Cushion Disc DIB Lead Wire Earth Spike Micro Chip Moulded grommet Capacitor Fuse head Lead azide primary charge PETN Base charge Cushion Disc PC board
better together... we deliver Copyright ©, 2014, Sasol Confidential Strategic Partner Value-Added Supplier Product Vendor 15 Mine need a “One Solution” Value – Added supplier and strategic partner Risk/Reward Supplier’s value-add Relationships Information Sharing Increase Number of Suppliers Features Price “Total cost” of selling/buying Decrease Current Supply Position Current relationships are transactional – benefits will only be realised at strategic partner stage. Mitigation of diamond damage
Slide 16 Questions?
Using Konya’s Method to Identify Blast Design Problems An overview of the Havablast 4 Spreadsheet.
FLYROCK Flyrock is the propelling rock from the blast area. Leading cause of fatalities and equipment damage.
DASARI SURESH ASST. MANAGER (MINING) What is fragmentation ? Fragmentation is the process of breaking the solid in-situ rock mass into several smaller.
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Chapter 13 Blasting Rock.
BLASTING FOR REDUCED ROCK DAMAGE AND CONTROLLING STABILITY.
Southern Coal Fields Outburst Seminar Shotfiring Training Alan Phillips.
Core Tasks Examine the blast area to ensure safety, and determine where the explosives need to be placed in order to get the job done Position the explosives.
Blasting Fundamentals ©Dr. B. C. Paul 2000 Note – The slides that follow present the author’s summary of knowledge commonly held by people well studied.
WEL COME. DRILLING AND BLASTING Index Introduction of Drilling and its Necessity Terminology use for drilling Selection of drilling method Selection.
Electronic Detonators. Shock Tube Electric Igniter Delay Module Base Charge Electronic Delay Capacitor (Stored Energy) Shock TubeElectric Igniter Delay.
VARIOUS WAYS OF TIMING NORMAL TIMING - BLOCK. NORMAL TIMING - STAGGERED. DAISY CHAIN - STAGGERED. REVERSE TIMING - BLOCK. REVERSE TIMING - STAGGERED.
Open Pit Mining ORE / WASTE TRACKING SAMPLE TRACKING BLAST BLOCK MONITORING GRADE CONTROL SAMPLE TRACKING DMS PROCESS ASSET TRACKING SCREEN PANEL MANAGEMENT.
Chapter 3 PHYSICAL INJURY AND CONTROLS 3.2Electrical Safety Presented by Dr. Mohd Nasrull Abdol Rahman BWU Occupational Safety & Health.
Blasting safely with proper techniques Module one The most important responsibility of the blaster in charge is to prepare and fire safely. They are.
Designing Basic Blasting Shots Part II ©Dr. B. C. Paul 2000 Note – The topics covered in these slides represent the author’s summary of information familiar.
Controlled Blasting In Cutting Integrated Course Presentation by: * V. P. Tembhurkar. AXEN/C/AMI/CR * B. Verma. ADEN/PRNA/NFR * S. K. Singh. AXEN/C/CKP/SER.
Specific inspection issues in the non-coal mining sector Peter Roedel WORKSHOP ON WORK SAFETY RESPONSIBILITY SYSTEMS WITHIN OSH INSPECTION SYSTEMS 15 –
ADVANCED ELECTRICAL SAFETY AWARENESS February 9, 2008 Guest Palace Hotel Doha, Qatar Engr. Amado B. Taduran Philippine Association of Safety Engineers.
Partnering and Collaborative Working An Introduction Dr Neil Jarrett.
6/4/ MODERNIZED DEMOLITION INITIATORS (MDI) ( ) ( )
ASPEC Damaging Energies New Staff Induction What is this course about? This course is designed to talk through the major damaging energies on site. It.
Boddington Gold Blasthole Sampling at Newmont Boddington Gold Sampling 2013 – Brisbane May 2013.
Rock Excavation. Rock Characteristics Igneous Rock – granite, basalt Sedimentary Rock – sandstone, shale, limestone Metamorphic Rock – originated as igneous.
DEVELOPMENT OF THE ABM25 POST CRINUM March 2007 Doing the basics better - West Wallsend, Crinum and Ulan.
Dick McDonald Tunneling Safety & April 20, LCLS Conventional Facilities Dick McDonald Deputy Systems Manager.
Case Study – St Clair Park Village, Auckland, NZ St Clair Park Village: 10 individual 3 storey units generally in blocks of four and five Timeline for.
The global energy landscape and its impact on Bangladesh Dr. Boris Gehring TÜV SÜD Slide 1 13/10/15‘Safe Future Now’ Summit on Power and Energy in Bangladesh.
Introduction Operations Management Intermediate Business Management.
John Jossifakis Director of Events Innovations Unlimited ME.
Designing Basic Blasting Shots Part I ©Dr. B. C. Paul 2000 Note – The topics covered in these slides represent the author’s summary of information familiar.
Hazard Recognition and Risk Analysis Why follow safe work practices?
Pre- Conditioning course Prepared by DP Venter from pre-conditioning booklet as well as AEL presentation slides.
The History of Explosives N. C. Dept. of Transportation Safety & Loss Control.
Vibrations from blasting Where is blasting used? Mining Construction – Demolition – New constructions – Densification Kim André Larsen Ph.D.Student Department.
Excavation. What is Excavation Work Excavation work generally means work involving the removal of soil or rock from a site to form an open face, hole.
Common Blast Design Pitfalls Trouble Shooting The 19th Annual Surface Mined Land Reclamation Technology Transfer Seminar Jasper, Indiana December 5 th.
ISMR Technology Transfer Seminar ANFO & Emulsion Characteristics Heavy Blends as a Tool for Blasters!
26 February 2008, Bilbao – Belgium Presented by: Mr. Serge Azaïs, President Manual Handling of Gypsum Products Gypsum Products Ergonomics based on Risk.
Safe Introduction of Electronic Detonators Your host... John Watson The Ensign-Bickford Company.
WAREHOUSING MANAGEMENT. Part of firms logistics system that stores products at and between point of origin and point of consumption. Term Warehousing.
Of an Explosion CHARACTERISTICS. Not like a fire – does not need oxygen Energy and gases released as products of rxn Expanding gases produce a pressure.
MABS21 Israel 2010 Julius Mezaros Lecture 53 Years of Blast Wave Research A Personal History by John M. Dewey Dewey McMillin & Associates Professor Emeritus,
Electrical Safety and Grounding Essentials Copyright © Texas Education Agency, All rights reserved.
Shot Design Example ©Dr. B. C. Paul 2000 Note – The example portrayed in these slides is an illustration prepared by the author using knowledge that the.
Stiffness Ratio Stiffness Ratio = B H / B where B H is Bench Height B is the Burden Target Stiffness Ratios 3 to 4 is normal range > 4 does not improve.
Chapter 12 Transformers © Goodheart-Willcox Co., Inc.Permission granted to reproduce for educational use only. Objectives Explain the operation of a.
First Step is Selection of Burden B = 0.67 * D e * (E/S gr ) 0.33 –D e is hole diameter in inches –S gr is the specific gravity of rock where water =
Construction Category Management Planning Version 1.1 (May 2015)
MNM Fatal Explosives Explosives December 4, 2013 (Kansas) December 4, 2013 (Kansas) Crushed Stone Mine Crushed Stone Mine Lead Man Lead Man 63.
All civil engineering projects like dams, reservoirs etc. constructed on earth crust and constructed by material obtained from the crust. So it is.
© 2017 SlidePlayer.com Inc. All rights reserved.