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how to improve explosive efficiency in opencast mines

The big bang: coordinating the world's biggest mine blast

May 31, 2016· It is an essential part of the mining business, for both underground and open pit mining operations. Blasting is typically done by a number of holes being drilled into the rock, which are then filled with explosives. Detonating the explosive causes the rock to collapse. Rubble is then removed and the new tunnel surface is reinforced.

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The Design and Implementation of Coal Mine Monitoring ...

technology in the mine explosive carrier vehicle and underground explosion. (5)Decrease the number of workers and increase efficiency is an important goal and means of coal enterprise to improve safety production management level. It put forward higher request for coal mine

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Controlled blasting in a limestone mine using electronic ...

Controlled blasting in a limestone mine using electronic detonators: A case study. Ever growing demand in minerals and coal has compelled the mine operators to increase the size of mine, which has resulted in an increasing trend towards large capacity open cast projects. Explosives and blasting techniques play a significant role in efficient opencast...

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Opencast Mining Unit Operations By V. V. Rzhevsky

Opencast Mining Unit Operations by Rzhevsky,, Mir Publishers Opencast Mining Technology and Integrated Mechanisations by Rshensky, Mir Publishers. With the appearance of online sites offering you all types of media files, including movies, music, and books, it has become significantly easier to get hold of everything you may need.

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Cast Boosters

It is designed to easily slip onto the end of a Primadet® or any other standard detonator ™ cast boosters deliver the driving force required for generating maximum initiating energy and blasting effi ciency. They provide reliability, safety and durability for all underground mining, opencast mining and quarry applications.

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3rd International Symposium on Mine Safety Science and ...

Also, the QRA method was applied to assess the risk of a selected largescale oil depot in a large opencast coal mine in China based on the QRA software CASSTQRA. For the gasoline tank of 1´104 m3, the death, serious injury and light injury affected radius of a pool fire were, and and the individual risk was acceptable.

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BME was the first explosives company to introduce cold emulsions into South African opencast mines, and is today the market leader in emulsions and explosives in Africa. BME SUPPLIES AND MANUFACTURES A FULL RANGE OF PRODUCTS, INCLUDING: 1. Bulk emulsions 2. Packaged explosives 3. Initiating systems 4. Electronic detonators (AXXISTM) 5.

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Influence of density of emulsion explosives on its ...

principles, namely proper explosive energy input at strategic locations within the rock mass and its proper time of release for optimum interaction31. To obtain a lowdensity explosive (LDEX) product, emulsion matrix was prepared from the site mixed emulsion .

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Impacts of Mining on Our Environment (with Remedial Measures)

Impacts of opencast mining: Fires in opencast mines contribute heat, SPM, SO2, CO2 and CO. i. Use of petrol vehicles in the mines contributes hydrocarbons and lead. j. The equipment used in the opencast mines for various purposes including the transport of the overburden and mineral generate continuous noise, while blasting produces impulsive noise.

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v119n2a11 Development of a blastinduced vibration ...

In an opencast coal mine explosives are used for fragmentation of coal and overburden. If the explosive energy is not fully utilized it causes blastinduced ground vibration, which may damage nearby structures. Ground vibration is expressed as peak particle velocity (PPV). During different stages of mine planning and operation, it is necessary ...

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Explosives and Blasting in (Open Cast Mines) Mining ...

Blast Hole Open Stopes Blasting to Improve Fragmentation in Mines Coal Mining Vs. Metalliferous Mining CUT AND FILL MINING Development of an underground metal mine Inspection Mine Plan and Section Lead and Zinc Under Ground Mining Methods Mine Planning Engineer Malanjkhand Copper Mines Raising methods in metal Mines Typical Sub Level Stopes (54mm dia holes) UNDERGROUND MINING .

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explosives – Mining and Blasting

Jun 14, 2018· ANFO has found wide use in coal mining, quarrying, metal mining, and civil construction in undemanding applications where the advantages of ANFO's low cost and ease of use matter more than the benefits offered by conventional industrial explosives, such as water resistance, high detonation velocity, and performance in small diameters.

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Itc availability on explosives used in coal mining Henan ...

increase availability of coal crusher shivampropertycoin increase availability of coal crusher Home Products Solution Material Final Size Capacity News Application Case About us InquiryHome Application increase live chat itc availability on explosives used in coal mining. Email:query Get a Quote Send Inquiry

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Optimization of blasting parameters in opencast mines ...

Abstract. Drilling and blasting are the major unit operations in opencast mining. Inspite of the best efforts to introduce mechanization in the opencast mines, blasting continue to dominate the production. Therefore to cut down the cost of production optimal fragmentation from properly designed blasting pattern has to be achieved.

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India: CIL to develop 55 new coal mines in next 5 yrs ...

Besides, CIL has introduced technology "to improve its work efficiency with high capacity Heavy Earth Moving Machinery, like 42 cum Shovel and 240 T Rear Dumpers in Gevra Expansion, Dipka Kusmunda opencast mines (and) introduction of surface miners in opencast mines to improve operational efficiency and to cater to environmental needs."

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Productivity in mining operations: Reversing the downward ...

A new metric shows just how far mining productivity has declined. It also points to ways to improve productivity more effectively. Worldwide mining operations are as much as 28 percent less productive today than a decade ago, according to new McKinsey research. The results from McKinsey's new ...

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A new approach in blast vibration analysis and prediction ...

AbstractUncertainties in vibration analysis from blasts can be attributed to the problem of determining the actual amount of explosive detonating within a specific time interval, and the number of holes effectively contributing to the resulting particle velocity. This paper describes the results of a systematic study carried out to investigate these effects at iron ore mines in India.

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Optimization of Blast Fragmentation and Muck Profile

various geomining conditions. Consistently effective blasts, involving as high a quantity as 100 tonne of explosives, can be routinely executed by opencast mines with ground vibration remaining within permissible levels. Optimization of blast design in many cases has yielded 15 to 25% saving in explosive consumption. Controlled Blasting

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