how to improve e plosive efficiency in opencast mines

Publications on Opencast blast | Geoengineer

Abstract The blasting operation plays a pivotal role in the overall economics of opencast mines. The blasting sub-system affects all the other associated sub-systems, i.e. loading, transport, crushing and milling operations. Fragmentation control through effective ...

Rock fragmentation control in opencast blasting

The blasting operation plays a pivotal role in the overall economics of opencast mines. The blasting sub-system affects all the other associated sub-systems, i.e. loading, transport, crushing and milling operations. Fragmentation control through effective blast design ...

Coal Gas | Coal Mine Methane | Coal Seam Methane

Coal mine degasification was originally developed to improve worker safety in mines. If not captured the methane-laden mine air is vented to atmosphere by exhaust fans. In recent years, international studies have determined that 30-40% of all coal mines produce gas that can be effectively used for power generation with gas engines.

Reclamation of Degraded Landscapes due to Opencast …

 · 3. Reclamation of opencast mine sites It''s crucial to make a mine disturbed land environmentally stable in order to transfer an unpolluted environment and natural resources to the next generations. However, when a demolished land is left with its own, it may take ...

DESIGN OF STABLE SLOPE FOR OPENCAST MINES

b) Designing of stable slopes for opencast mines using numerical models. 1.3 Research Strategies Extensive literature review has been carried out for understanding the different types and modes of slope failures. Numerical model FLAC/Slope was critically

explosives used in opencast metal mining in india

An explosive carrier can carry only 1 case containing 5 kg of explosive but Director of Mines Safety may give relaxation. Explosive case should be numbered. Jeep or trailer is allowed to carry more explosives for opencast mines for deep holes.

Explosives and Blasting in Open Cast | Explosion | Nature

Explosives and Blasting in Open Cast - Free download as PDF File (.pdf) or read online for free. Explosives is a chemical compound or mixture, when exploded by action of heat, impact, gives large volume of gases in a very short time at high temperature & pressure.

Surface Mining Methods and Equipment

Larger mines offer higher productivity and lower operating costs than smaller mines. Furthermore, open pit mines, typical of larger operations, have much higher normal productivity and lower unit operating costs than for comparable underground mines.

Modernisation to address safety, efficiency of deep …

 · These programmes include developing advanced orebody knowledge, ensuring the longevity of current mines, mechanised drill and blast, non-explosive rock …

Application of Solar Energy for Lighting in Opencast Mines

Application of Solar Energy for Lighting in Opencast Mines A Thesis Submitted in Partial Fulfillment of the Requirements for the Degree of Master of Technology In Mining Engineering By Abhishek Kumar Tripathi (Roll No. 212MN1424) Under the guidance of Dr

Optimization of Blasting Parameters in opencast Mines

National Institute of Technology Rourkela This is to certify that the thesis entitled " Optimization of Blasting Parameters in Opencast Mines " submitted by Sri Manmit Rout (Roll. No.: 10305019) and Sri Chinmay Kumar Parida (Roll. No ...

Chapter 8 BLAST DESIGN

117 explosive energy applied to the surrounding rock. Analysis of the cost of explosives requires that the effects of explosive energy be placed into proper perspective within the entire drilling, blasting, handling and process-ing operation. This relationship is illustrated

Blaster''s Training Modules

efficiency. If a quarry plans to use 30-foot bench heights with 7 feet of sub-drill, a drill rig with 25-foot-long steels may not be a good choice, because two steels will be required to complete one hole. Metal mines generally use 50-foot bench heights, for which

IRJET

 · https://irjet /archives/V7/i4/IRJET-V7I4210.pdf

booster – Mining and Blasting

 · Every explosive has a certain critical diameter below which detonation will not propagate beyond the primer point. Confined, ANFO''s critical diameter is approximately 1 1/4 inches. That is, a borehole or column of ANFO less than two inches in diameter will detonate in the immediate area of the primer, but cannot reliably carry the detonation process much beyond that point.

Study of efficiency and productivity growth in opencast and …

behind productivity growth in opencast mining, while efficiency growth has been the most important factor in growth of underground mine productivity. Underground mines seem to have adopted a more efficient practice of operation to compensate for the lag in

(PDF) IRJET

Productivity improvement is a difficult task. For this both managers and work force must be persuaded somehow that they have a common interest in increasing output per head. The consistent necessity to improve the utilization of costly HEMM and the

Rock fragmentation control in opencast blasting

 · The blasting operation plays a pivotal role in the overall economics of opencast mines. The blasting sub-system affects all the other associated sub-systems, i.e. loading, transport, crushing and milling operations. Fragmentation control through effective blast design ...

Impacts of Mining on Our Environment (with Remedial …

Impacts of Mining on Our Environment (with Remedial Measures) Mining of minerals, being an environmentally unfriendly activity, has attracted attention from the stand point of environmental impacts and their mitigation. Another fact about mining is that it is a site specific activity and is only an intermediate use of the land because mining is ...

Blast-Casting Mechanism and Parameter Optimization of …

In bench deep-hole blasting in opencast mines, several columnar blast holes are usually laid out in a line, which is approximately equivalent to the plane charge method. Each hole on the charge distribution plane produces a spherical or cylindrical gas cavity after detonation, which expands rapidly in all directions at the same speed [ 22, 23 ].

Optmization of blasting parameters in open cast mines

Rock fragmentation control in opencast blasting ...

USE OF INFORMATION AND COMMUNICATION TECHNOLOGY IN UNDERGROUND MINES …

Efficiency and productivity monitoring system for opencast mines • A application that allows for the identification of location and the tracking of movement of a mines fleet. • By using this automatic (and accurate) means of collecting data over a period of time, it is

Evaluation of Blasting Efficiency in Surface Mines

Drilling and blasting are the major unit operations in opencast mining. In spite of the best efforts to introduce mechanization in the opencast mines, blasting continue to dominate the production. Beside the production in open cast mining blasting and vibration also ...

Optimization of drilling and blasting operations in an …

Busuyi (2009) studied Uranium opencast mines of Somair in the Niger Republic. The objective was to find out the efficacies of two types of drilling equipment and two types of blasting explosives ...

Optimization of Blasting Operation in Opencast Mine

efficiency is improved through the reducing of wastage of explosive energy in blasting, less throw of blasted material and reducing of blast vibration resulting in greater degrees of safety and stability to the nearby structures. Optimization means action of making

Optimization of drilling and blasting operations in an …

 · Received 23 February 2009; accepted 15 May 2009 Corresponding author. Tel: +27-798127137; E-mail address: [email protected] Optimization of drilling and blasting operations in an open pit mine—the SOMAIR experience AFENI Thomas Busuyi School of Mining Engineering, Faculty of Engineering and Built Environment, University of the Witwatersrand, Johannesburg, South Africa …

Method for tamping of blast down holes in single blasts in …

to methods for tamping of blast down holes in single blasts in opencast mines. Method includes installation of additional tamping from loose finely dispersed material in upper non-charged part of shot holes directly above explosive charge (EC) for the ...

Evaluation of Blasting Efficiency in Surface Mines

''''Evaluation of Blasting Efficiency in Surface Mines" represent my original work carried out as a postgraduate student of NIT Rourkela and, to the best of my knowledge, it contains no material previously published or written by another person, nor any material presented for the

Application of plastic funnel in blast hole to improve blasting …

maximizing the utilization of explosive energy in the blast hole. Use of ''reverse plastic funnel'' into the blast hole is one of the techniques for more utilization of explosives energy to improve blasting efficiency. The reverse plastic funnel is placed between explosive

Gas Monitoring and Testing in Underground Mines using Wireless Technology

Name Primary sources in mines Hazards Flammability limits in air (%) Methane (CH4) Strata Explosive, Breathing problem 5 to 15 Carbon dioxide (CO2) Oxidation of carbon, fires, explosions Increased heart rate and breathing N/A Carbon monoxide (CO)

v118n5a1 Optimization of the load-and-haul operation at an opencast …

increase of 2% over the national consumer inflation. In order for coal mines to survive and mine profitably, they need to capitalize on the opportunity to improve their productivity and focus on one factor they can control: operational efficiency. Increasing productivity

8 strategies for reclaiming efficiency and lowering …

 · Optimize mine sites through enhanced sequencing. Ramp up production from lower cost mines and prioritize lower cost projects. Attract and retain experienced mine planners capable of improving operational performance and tracking daily adherence to production volumes, mining locations and mineral content. 2. Improve budget and risk management.

Enhancement of Drilling & Blasting efficiency in Opencast and …

that can improve explosives use and produce better fragmentation. Thereby, the rig utilization overall efficiency can be increased nearly by 10 to 15 percent by implementing these automated functions. 2) Precise Delay Detonation system: Just as accurate hole

Documents and E-books

As far as possible, new techniques with improved systems are to be adopted in order to enhance over all efficiency of the mine workings. References 1. Atlas Powder Company, Dallas, Texas, USA - "Explosive and Rock Blasting" 1987. 2. Blasters'' Handbook – E