Rock fragmentation control in opencast blasting. ... fragmentation control, blast design in mines and tunnels, pre-split blast design, cast blast designs in coal mining operations besides correlating structural damage due to blast vibrations. He has authored a blast damage index for underground openings in close vicinity of opencast blasting ...
Blasting is one of the most feared and least understood aspects of mining operations in Ohio and elsewhere. But on a typical day under good economic conditions, nearly half a million pounds of explosives are safely detonated in Ohio's quarries and surface coal mines.
Coal Mining Makomo operates an opencast mine, and supplies coal by road to Hwange Power Station. ... The blast pattern drill hole location and spacing depend on the type of mined rock and overall mine plan. The depth of the hole will determine the height of the bench in the pit. Blasting. ... A Lookhere Design ...
A NOVEL POWDER FACTOR BASED BENCH BLAST DESIGN METHOD FOR LARGE SURFACE COAL MINES by ANDREW CLIFFORD BLAIR A DISSERTATION Presented to the Graduate Faculty of the MISSOURI UNIVERSITY OF SCIENCE AND TECHNOLOGY In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY in MINING ENGINEERING 2015 Approved by:
DESIGN OF SURFACE BLASTS- A COMPUTATIONAL APPROACH ... date, the blast design for a particular mine is established through trial blasts. The blast designer ... Developed computer model is tested in an iron ore & a coal mine and the result are analyzed. - 3 - CHAPTER: 02 BLAST DESIGN …
ROCK BREAKAGE AND BLAST DESIGN CONSIDERATIONS IN OPENPIT. PARTHA DAS SHARMA. 1. ... – In Surface Coal Mine, the mineral over-crushing is greatly reduced. ROCK MASS FRACTURING: The discontinuities or weakness planes of the rock mass influence the blastability. The weakness planes are recognised by little or no shear strength along the planes.
It is as much a method of pit design and equipment utilization as it is a method of blasting. Cast blasting is a type of blast design which utilizes the surplus explosive energy to move overburden material across the pit. It is most frequently employed in coal mines to remove overburden from above the coal …
This module presents recommended blast-design practices for surface mine and quarry blasting. 1.3 : Blaster Training Module 4 This module presents aspects of surface drilling that are important to blasting operations. The purpose of drilling into rock is to provide a …
This tuition-free seminar is for mining company managers, blasting engineers, blasters, and others involved with the planning, design, and use of explosives in the mining industry. It will be held at the National Mine Health and Safety Academy February 20-21, 2019.
Supervising Explosives Inventory Blast Design List below the total number of days you have active blasting experience working on a blasting crew, or supervising a blast crew during the last three (3) years at surface coal mines or surface areas of underground coal mines.
5 SURFACE STRIP COAL MINE BLAST DESIGN 5.1 INTRODUCTION TO EXPLOSIVES AND BLASTING 3 5.1.1 Blasting Theory 4 5.1.2 Explosives Properties and Types 6 EMULSIONS 7 ANFO 7 HEAVY ANFO 7 INITIATION SYSTEMS 8 DETONATORS 10 SHOCK TUBE SYSTEMS 11 DETONATING CORD 11 5.1.3 Explosive Strength and Performance 12
Optimisation of Overburden Blasts at Glencore Ulan Surface Coal Operations Daniel Thorn Glencore Ulan Surface Operations, Australia ... Ulan Coal Mines Limited (UCML) is one of the most established coal mining operations in the Western ... A review of the drill and blast design was implemented after the firing of Strip 5 with final aim to reduce
BLASTING IN SURFACE COAL MINES Blasting overburden and coal in open pit mines is still considered to be an art. Even though much research has been done in areas related to surface mine blast design and anal- ysis, very little of this research seems to have been applied in blasting practice.
Surface-Blast Design 1-36 Overview 1-5 Objectives 6 Highwall Stability 7-9 ... Rosebud Mine Background The Blaster's Training Modules is accessible by means of a main menu, which a ... initiation systems currently in use in blasting operations at surface coal mines.
SHOTPlus-i® software- blast design software Uni tronic™ electronic blasting system A few design alternatives were evaluated using DMC® model and the optimum design was implemented using SHOTPlus-i ® design software. Pre-blast survey (face points, crest, toe), top of coal and drill surface points were imported to the software. The design
Twentymile Coal Mine is one of the most successful coal production mines in the world. The coal mine is located 30km south west of Steamboat Springs in north-western Colorado, USA. ... 2 thoughts on " Mines Visit " KUMNAR SNS | February 23, ... Safety in Commercial Mining; NEW BURN CUT BLAST DESIGN IN DRIVES ENHANCES DRILLING & BLASTING ...
Coal Mine Construction electric detonators are designed to provide the precise control necessary to produce accurate and consistent blasting results in a variety of blasting applications in underground coal mine applications and other industries that require the use of a copper shell electric detonator. • 750 mg PETN base charge far
Apr 04, 2017· Mine workers may be killed or injured by rock thrown by a blast. The blaster who designs a blast determines how far rock from the blast is expected to go. Based on this determination the blaster will designate the blast area, which is the area that must be evacuated before a blast.
History of Explosives and Blasting In the US and Canada alone, blasters use more than 6 billion pounds of explosives and 75 million detonators per year. Coal mining accounts for two-thirds of consumed explosives of which more than 80% of it is ANFO.
BLASTING IN SURFACE EXCAVATION Any blast optimisation programme calls for a clear ... Blast Design The best use of explosives is made when a blast produces a clean break, giving good fragmentation, while avoiding ... H_BLASTING IN SURFACE EXCAVATION Author:
optimization of blasting parameters in opencast mines a thesis submitted in partial fulfillment of the requirements for the degree of bachelor of technology in mining engineering by manmit rout & chinmay kumar parida under the guidance of dr. h. b. sahu department of mining engineering national institute of technology rourkela-769008
Increases in production and scale of equipment in the past thirty-five years have created a paradigm shift for drill and blast personnel at these large surface mines, and the explosives industry has yet to create a blast design method specifically tailored for large surface coal mine bench blasting.