drilling patterns used in opencast mines

optimization of blasting parameters in opencast mines - ethesis - NIT .Drilling and blasting are the major unit operations in opencast mining. Inspite of the best . designed blasting pattern has to be achieved. Proper ... Drilling machines used in surface mining projects, construction work, etc., can be classified in.drilling patterns used in opencast mines,Mine Blasting & Explosives Technology, and Safety Regulations .Blasting is used in both open pit and underground mining operations. .. The drill pattern is designed to cover off the extent of the ore in the stope. This type of.

drilling patterns used in opencast mines,Drilling and blasting powerpoint 2003 - SlideShareApr 21, 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 . Explosives and blasting in underground coal mining.drilling patterns used in opencast mines,Drilling in mining - SlideShareApr 7, 2014 . Introduction to Drilling Technology for Surface Mining Prof. . However, there are drilling 3.2 Rotary Drilling Rotary drilling uses different type of rotary bits like . Design the drill hole pattern that would be use. .. Opencast mining involves removal of waste rock and subsequent winning of the mineral. In case.

Products Center

Quotation

COMMENTS on drilling patterns used in opencast mines

Designing Blast Patterns Using Empirical Formulas - Office of .

technique by comparing drill and blast pattern dimensions used in the quarry . The Bureau of Mines has been conducting field studies of explosive blast-.

Surface - Blast Design - Office of Surface Mining

coal strip mines using large drills will drill presplit holes that range from 9 to 12-¼ ... A staggered blast pattern is used for row firing, where the holes in one row.

blast pattern – Mining and Blasting

Oct 12, 2012 . Posts about blast pattern written by PARTHA DAS SHARMA. . ROCK BREAKAGE AND BLAST DESIGN CONSIDERATIONS IN OPENPIT ... I) Increased multiplier if drill cuttings are used for stemming and/or holes are wet.

optimization of blasting parameters in opencast mines - ethesis - NIT .

Drilling and blasting are the major unit operations in opencast mining. Inspite of the best . designed blasting pattern has to be achieved. Proper ... Drilling machines used in surface mining projects, construction work, etc., can be classified in.

Mine Blasting & Explosives Technology, and Safety Regulations .

Blasting is used in both open pit and underground mining operations. .. The drill pattern is designed to cover off the extent of the ore in the stope. This type of.

Optmization of blasting parameters in open cast mines - SlideShare

Aug 20, 2016 . 3.2.3.1 Single row firing pattern 13 Figure 3.2(a):- Multi row firing patterns ... 4 Chapter-3 Drilling and blasting in large opencast mines 3.1 Drilling . 5 3.1.1 Classification of drilling Systems Drilling machines used in surface.

drilling patterns used in opencast mines,

Drilling and blasting powerpoint 2003 - SlideShare

Apr 21, 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 . Explosives and blasting in underground coal mining.

Drilling in mining - SlideShare

Apr 7, 2014 . Introduction to Drilling Technology for Surface Mining Prof. . However, there are drilling 3.2 Rotary Drilling Rotary drilling uses different type of rotary bits like . Design the drill hole pattern that would be use. .. Opencast mining involves removal of waste rock and subsequent winning of the mineral. In case.

Designing Blast Patterns Using Empirical Formulas - Office of .

technique by comparing drill and blast pattern dimensions used in the quarry . The Bureau of Mines has been conducting field studies of explosive blast-.

drilling patterns used in opencast mines,

blast pattern – Mining and Blasting

Oct 12, 2012 . Posts about blast pattern written by PARTHA DAS SHARMA. . ROCK BREAKAGE AND BLAST DESIGN CONSIDERATIONS IN OPENPIT ... I) Increased multiplier if drill cuttings are used for stemming and/or holes are wet.

Drilling and blasting - Wikipedia

Drilling and Blasting is the controlled use of explosives and other methods such as gas pressure blasting pyrotechnics, to break rock for excavation. It is practiced most often in mining, quarrying and civil engineering such as . The most commonly used explosives in mining today are ANFO based blends due to lower cost.

drilling patterns used in opencast mines,

Download (11Mb)

Key words: explosives, blasting series, nonel - connectors, open pit mine . commercial explosives produced in Greece and Bulgaria were used. . production results have been obtained implementing drilling pattern a x b (3.75m x 3.5m).

Chapter 74 - Mining and Quarrying

Occasionally helicopters are used to sling drills between drill sites. ... Figure 74.9 Drill pattern, Garpenberg Mine, a lead-zinc mine in central Sweden ... Declines are typically used to access seams that are too deep for open-cast mining, but.

drilling patterns used in opencast mines,

3342203 - Gujarat Technological University

hole drilling pattern. 3b. calculate the amount of explosive required for bench blasting. 3.1 Explosives used in open cast mine. ANFO,SLURRY Explosive, LOX,.

10.6: GPS for Open-Pit Mining | Engineering360 - GlobalSpec

Excavating the ore is done by drilling a predefined pattern of blast holes, which are then . and other heavy equipment used for tunneling and mine excavation.

EFFECTS OF BLAST-HOLE DEVIATION ON DRILLING AND MUCK .

holes from the designed blast pattern and evaluate drilling and muck pile loading cost at . from the Hwange Colliery Company JKL and Chaba open cast mines. An excel model was used to model the changes in costs due to hole deviation.

Multi-goal Planning for an Autonomous Blasthole Drill

This paper presents multi-goal planning for an au- tonomous blasthole drill used in open pit mining oper- ations. Given a blasthole pattern to be drilled and con-.

Pre:hammermill and posh
Next:prospecting equipment crushing rocks