Techniques of Controlled Blasting - SlideShare
Following are the techniques of controlled blasting: Line drilling, Trim (Cushion) blasting, Smooth (contour or perimeter) blasting, Pre-splitting, Selecting and employing various parameters of blast design, using modern technology, Precise and accurate timing delays, Muffle blasting at critical and congested areas. 4 5.
Controlled Blasting Inc.
Controlled Blasting has a strong commitment to client services and safety. All of our blasters are professionally trained in the latest drilling and blasting techniques and our …
controlled blasting techniques – Mining and Blasting
21-12-2010 · Posts about controlled blasting techniques written by PARTHA DAS SHARMA
Controlled Blasting - 911metallurgist.com
Controlled Blasting Techniques. The five main controlled blasting or perimeter control techniques are line drilling, pre-splitting, cushion blasting, fracture control blasting and smooth blasting. These holes usually have a tighter spacing than production holes, are lightly loaded and are fired simultaneously before the production holes.
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 dam, tunnel or road construction. The result of rock blasting is …
Techniques of Controlled Blasting by Partha D …
Techniques of Controlled Blasting gm/m core wt.) for contour blasting can give effective result in tunneling. This results in an air cushion effect, which prevents over-break and reduces in-situ ...
CONTROLLED BLASTING TECHNIQUES - …
CONTROLLED BLASTING TECHNIQUES Broadly controlled blasting is done for controlling overbreak (in opencast and tunnel) and ground vibration. It can be catagorised into four types: pre-splitting, trim blasting, line drilling, and smoothing blasting.
(PDF) Design of controlled blasting (pre-splitting) …
Design of controlled blasting (pre-splitting) in Golegohar iron ore mine, ... Design of controlled blasting ... Controlled blasting techniques were used to control over-breaks and to aid in the ...
controlled Blasting for civil construction in an urban ...
packaged explosives, as well as innovative timing techniques only made possible by using electronic initiating systems. 1. Senior Blasting Technician, Orica Quarry and Construction, PO Box 391, Beenleigh Qld 4207. Email: [email protected] controlled Blasting for civil construction in an urban Environment R Domotor1 ABstrAct
Drilling and blasting powerpoint 2003 - SlideShare
drilling and blasting powerpoint 2003 1. seminar ondrilling & blasting equipments (2008-09) by yogesh s. ghule veermata jijabai technological institute civil and environmental engineering department 2.
Chapter 11 SPECIALIZED BLASTING TECHNIQUES
blasting of cornices increases efficiency, boring holes along the presumed tension line exposes the ava-lanche blaster to considerable danger. Safety in borehole blasting depends critically on: 1. The blasting crews ability to judge correctly the safe working line. techniques for working with this high explosive (See Chapter 5 - Detonating Cord)..
Avalanche control - Wikipedia
Avalanche control or avalanche defense activities reduce the hazard avalanches pose to human life, activity, and property. Avalanche control begins with a risk assessment conducted by surveying for potential avalanche terrain by identifying geographic features such as vegetation patterns, drainages, and seasonal snow distribution that are indicative of avalanches.
Controlled Blasting Techniques In Stone Quarry
Quarry blasting techniques YouTube. Aug 10, 2016· As a quarry blasting technique the Royex rock breaking Blasting Techniques In Dolomite Quarry blasting. Controlled Blasting Explosive Material . controlled blasting techniques *** means to mitigate adverse impact of blasting in open pits, quarry, tunnel, ug metal mines andconstruction w.
Blasting Technic and process - YouTube
8-10-2015 · process of blasting in coal mines and use of shock tube
Controlled Blasting Techniques | Applied And ...
Controlled blasting techniques : Line. drilling, Trim (Cushion) blasting, Smooth (contour or perimeter) blasting, Pre-splitting Precise and accurate timing delays, Muffle blasting at critical and congested areas. Line drilling : This system involves a single row of …
Techniques of Controlled Blasting – Mining and …
2-9-2009 · This entry was posted in blasting, explosives, mining and tagged blast design, blasting, construction blasting, control of ground vibration, controlled blasting techniques, mines, tunnel blasting. Bookmark the permalink. Post navigation ←
Controlled blasting for enhanced safety J in the ...
Controlled blasting for enhanced safety in the underground environment loading of the product with pneumatic Lategan loaders there is a temptation to overfill the blastholes as it seems obvious to miners that more explosives will provide better breaking. A study was undertaken to …
Blast Hole Drilling: The Basic Process | RPM Drilling
Controlled blasting techniques include: Pre-splitting (in which the purpose is to form a fracture plane beyond which the radial cracks from the blast cannot travel), Trim or Cushion blasting, Smooth, Perimeter or Contour blasting in underground mines, and muffle blasting (which addresses the need to prevent fly-rock from injuring individuals or ...