Drilling and blasting - SlideShare
25/04/2017· Controlled Blasting – Cushion Blasting • Requires a single row of holes ( 2 to 3.5 in) in dia. • Permits a reduction in the No. of holes required by line-drilling • Unlike line-drilling holes, the cushion holes are loaded with light charges. • Holes are fullyDrilling and blasting - SlideShare,30/04/2019· DRILLING AND ITS NECESSITY Drilling is the process of making hole in solid materials like rocks, timber, metal, etc. For blasting rocks, drilling is necessary to make hole in the rock to place explosive in the drill hole. Different tools and methods are used for drillingDrilling and blasting powerpoint 2003 - SlideShare,21/04/2012· 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 intoDrilling And Blasting PowerPoint PPT Presentations,Drilling, blasting and loading: Blasthole drilling linked in to the computer aided mine planning system and the loading shovel., | PowerPoint PPT presentation | free to view Tunnelling Methods - DrillDrilling & Blasting | Explosive Material | Drill,Drilling & Blasting - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. Drilling And Blasting in surface Drilling And Blasting in surfaceBlasting - SlideShare,19/11/2013· blasting 1. blasting most basic unit operation of any mining activity 2. objective • rock is blasted either to break in to smaller pieces such as in most mining and quarrying operations or large blocks for dimensional stone mining and some civil engineering application, or to create space. • in mining and quarrying operation, the main objective is to extract the largest possible quantity at minimum cost.
Rock blasting for mining - SlideShare
28/07/2017· Ring drilling and blasting is done from a series of sub level drill drifts developed in the ore body. The drill pattern is designed to cover off the extent of the ore in the stope. This type of blasting will cause the ore to swell by 30%, and this must be allowed for when blastingDrilling Ppt | Drill | Drilling,3.1.1 Drilling principles 1. Introduction In virtually all forms of mining, rock is broken through drilling and blasting. Except in dimension stone quarrying, drilling and blasting are required in most surface mining. Only the weakest rock, if loosely consolidated or weathered, can be broken without explosives, using mechanical excavators (ripper, wheel excavators, shovels etc.) or occasionally a more novel device,PPT – Drilling. PowerPoint presentation | free to download,,Horizontal Directional Drilling : What is it & How is it performed - With development in the drilling and construction industry, major changes have been observed in the drilling techniques used world wide. Horizontal Directional Drilling (HDD) is popular among the contractors because it is time saving, requires less resources and feasible in areas where other techniques possess a risk or threat to theBlasting - Safety Training PowerPoint Presentations,All results in blasting performance are due to the degree of confinement, based on the columns of the blasting product being utilized for a given overburden material. 5 slides: 2013 Fatal Accident Investigation The victim was killed after a blast was initiated. He was in a front-end loader about 30 feet from the base of a highwall. After the blast, broken rock struck the front-end loader and covered it.Drilling Blasting PPT | Xpowerpoint,View and Download PowerPoint Presentations on Drilling Blasting PPT. Find PowerPoint Presentations and Slides using the power of XPowerPoint, find free presentations research about Drilling Blasting PPTDrilling & Blasting Pattern.pptx | Nature | Free 30-day,,Drilling & Blasting Pattern.pptx - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online.
Drilling and blasting powerpoint 2003 - SlideShare
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 availabilityMCM 214 Session 7 Drilling and Blasting.ppt - Drilling,,View MCM 214 Session 7 Drilling and Blasting.ppt from PRINXE FEBRUARY at Kingston College of Sciences & Commerce, Faisalabad. Drilling equipments Drilling Equipments Percussion Drills Rotary(PPT) Study and Quantification of Tunnel Works by drilling,,Excavation Of Tail Tunnel • Including time for Survey, Drilling, Blowing, Loading, Blasting, De fuming and Scaling, lowering and lifting of Equipment, Mucking, Shot Crete, Rock Bolt and wire mesh, the total cycle time for Tail Tunnel Heading Pilot (6.0m x 6.0m) in all classes will be 20 Hrs. Activity Unit Duration Surveying min. 20 Equipment Placing min. 30 Drilling min. 360 Loading min. 120,PPT – Drilling. PowerPoint presentation | free to download,,Title: Drilling. Author: Martin Killeen Last modified by: Adrian Created Date: 10/10/2008 5:56:46 PM Document presentation format: On-screen Show Company – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow - id: 598f85-NWJlMDrilling and Blasting - an overview | ScienceDirect Topics,01/01/2012· Zong-Xian Zhang, in Rock Fracture and Blasting, 2016. 21.5.2 To Increase Explosive Energy in Blasting. The preceding analysis indicates that an increase in drilling and blasting energy can increase the efficiency of total energy in the whole size reduction system. Moreover, a total of 210 blast tests show that the specific surface created by blasting in the unit of cm 2 /g linearly increases,(PPT) MINIMIZATION OF BOULDERS DURING,This are mostly used for military purposes.FACTORS AFFECTING BLASTING PERFORMANCE Geology of an area -Physical rock properties, rock hardness and rock structure . Controllable and uncontrollable factor Drilling pattern Physical selection parameter Explosive Powder factor Delay time *Bench height *Blast hole diameter *Sub-drill *Stemming(h o =1*B) *Spacing(S=1.25*B) GEOLOGY
Thedevelopment ofdrilling andblasting practice atPalabora,
the Drilling and Blasting Foreman. It isnow afunction ofthe Survey Section, whoaccurately plot allthe drill holes. From bench plans, the Mining Department Technical Section decideontheblastpattern to beemployed (usually standard pat-tern), the number ofrows, and the depth of sub-grade drilling. The actual positions of the holes are surveyed, using theback rowofthe previous shot asareference,NPTEL :: Mining Engineering - NOC:Drilling and Blasting,,NOC:Drilling and Blasting Technology (Video) Syllabus; Co-ordinated by : IIT Kharagpur; Available from : 2018-04-26; Lec : 1; Modules / Lectures. MODULE 1 . Lecture 01: Introduction to Drilling Technology; Lecture 02: Introduction to Blasting Technology; Lecture 03: Rock Formation; Lecture 04: Rock Formation (Contd.) Lecture 05: Rock Formation (Contd.) MODULE 2. Lecture 6 : Rock Properties,Blasting And Drilling PowerPoint PPT Presentations,Blasting And Drilling PowerPoint PPT Presentations. All Time. Show: Recommended. Sort by: BLAST HOLE ROTARY DRILLING IN PERTH - We are the best quantities a variety of rotary drill parts whatever are created to maximize specific performance for a specific application. Our commitment to continuous development is meant on the strength we must upon customize a drill bit to suit your appropriate,Drilling Blasting PPT | Xpowerpoint,View and Download PowerPoint Presentations on Drilling Blasting PPT. Find PowerPoint Presentations and Slides using the power of XPowerPoint, find free presentations research about Drilling Blasting PPTMCM 214 Session 7 Drilling and Blasting.ppt - Drilling,,View MCM 214 Session 7 Drilling and Blasting.ppt from PRINXE FEBRUARY at Kingston College of Sciences & Commerce, Faisalabad. Drilling equipments Drilling Equipments Percussion Drills RotaryDrilling and blasting powerpoint 2003 - SlideShare,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
Computer applications in drilling and blasting
27/08/2018· 3.0 Drilling pattern and blast design • The blasting engineer faced with the challenge of identifying the rock mass properties governing the blasting performance in each situation and to incorporate them in the blast design process. • Computer aided blast design techniques, numerical blasting models and expert systems considerably reduce both the cost and time involved in blastBasic Blasting Patterns.ppt | Plough | Drilling,Basic Blasting Patterns. Dr. B. C. Paul 2000 Note The concepts contained in these slides represent the authors view of information commonly held among those well studied in the field. Some of the figures contained in these slides were taken from or prepared with inspiration from the Blasters Handbook published by DuPont. Blasting Nomenclature Free Face - open area at the rock air interface,PPT – Drill Bits and Drilling PowerPoint presentation,,Drill Bits and Drilling Drilling is the process of cutting holes in metals by using a drilling machine The twist drill is made from High Speed Steel, tempered to give, – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow - id: 4e9e75-MDk5MThedevelopment ofdrilling andblasting practice atPalabora,,the Drilling and Blasting Foreman. It isnow afunction ofthe Survey Section, whoaccurately plot allthe drill holes. From bench plans, the Mining Department Technical Section decideontheblastpattern to beemployed (usually standard pat-tern), the number ofrows, and the depth of sub-grade drilling. The actual positions of the holes are surveyed, using theback rowofthe previous shot asareference,P&Q University Lesson 4- Drilling & Blasting : Pit & Quarry,28/08/2019· Consider that drilling and blasting are the first operations performed in any hard rock quarry operation. Therefore, the results of these operations will affect more down-line activities, such as loading, hauling and crushing, than any other processing operation. Photo by Tom Hingst . Blasting should always be viewed in the global sense. One should examine not only the effect of changes ondrilling and blasting lecturer notes ppt,drilling and blasting lecturer notes ppt. south african regulation for sand blasting Know More. Jan 15 2013 0183 32 South African drilling and blasting leaders Written by Ben rock quarry development and practice free lecture notes iron ore beneficiation plant ppt... Petroleum Engineering Notes Alex Zheng Know More. Alex Zheng s petroleum engineering notes from the University of Tulsa PDF,
